diff --git a/.travis.yml b/.travis.yml
index b8c5b385c..a4a4ed8b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,31 +1,31 @@
 language: python
 cache: pip
-
-python:
-    - "2.7"
-    - "3.4"
-    - "3.5"
-
-sudo: false
-
-env:
-    - DJANGO=1.11
-    - DJANGO=2.0
-    - DJANGO=2.1
-    - DJANGO=master
-
+dist: xenial
 matrix:
     fast_finish: true
     include:
-      - { python: "3.6", env: DJANGO=master }
+
+      - { python: "3.5", env: DJANGO=1.11 }
+      - { python: "3.5", env: DJANGO=2.0 }
+      - { python: "3.5", env: DJANGO=2.1 }
+      - { python: "3.5", env: DJANGO=2.2 }
+
       - { python: "3.6", env: DJANGO=1.11 }
       - { python: "3.6", env: DJANGO=2.0 }
       - { python: "3.6", env: DJANGO=2.1 }
-      - { python: "3.6", env: TOXENV=base }
-      - { python: "2.7", env: TOXENV=lint }
-      - { python: "2.7", env: TOXENV=docs }
+      - { python: "3.6", env: DJANGO=2.2 }
+      - { python: "3.6", env: DJANGO=master }
 
-      - python: "3.6"
+      - { python: "3.7", env: DJANGO=2.0 }
+      - { python: "3.7", env: DJANGO=2.1 }
+      - { python: "3.7", env: DJANGO=2.2 }
+      - { python: "3.7", env: DJANGO=master }
+
+      - { python: "3.7", env: TOXENV=base }
+      - { python: "3.7", env: TOXENV=lint }
+      - { python: "3.7", env: TOXENV=docs }
+
+      - python: "3.7"
         env: TOXENV=dist
         script:
           - python setup.py bdist_wheel
@@ -33,16 +33,8 @@ matrix:
           - tox --installpkg ./dist/djangorestframework-*.whl
           - tox  # test sdist
 
-    exclude:
-      - { python: "2.7", env: DJANGO=master }
-      - { python: "2.7", env: DJANGO=2.0 }
-      - { python: "2.7", env: DJANGO=2.1 }
-      - { python: "3.4", env: DJANGO=master }
-      - { python: "3.4", env: DJANGO=2.1 }
-
     allow_failures:
       - env: DJANGO=master
-      - env: DJANGO=2.1
 
 install:
     - pip install tox tox-venv tox-travis
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 120000
index 000000000..025215c5e
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1 @@
+docs/community/release-notes.md
\ No newline at end of file
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 29ba53955..2f1aad08f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,7 +20,7 @@ When answering questions make sure to help future contributors find their way ar
 
 Please keep the tone polite & professional.  For some users a discussion on the REST framework mailing list or ticket tracker may be their first engagement with the open source community.  First impressions count, so let's try to make everyone feel welcome.
 
-Be mindful in the language you choose.  As an example, in an environment that is heavily male-dominated, posts that start 'Hey guys,' can come across as unintentionally exclusive.  It's just as easy, and more inclusive to use gender neutral language in those situations.
+Be mindful in the language you choose.  As an example, in an environment that is heavily male-dominated, posts that start 'Hey guys,' can come across as unintentionally exclusive.  It's just as easy, and more inclusive to use gender neutral language in those situations. (e.g. 'Hey folks,')
 
 The [Django code of conduct][code-of-conduct] gives a fuller set of guidelines for participating in community forums.
 
@@ -50,7 +50,7 @@ Getting involved in triaging incoming issues is a good way to start contributing
 
 To start developing on Django REST framework, clone the repo:
 
-    git clone git@github.com:encode/django-rest-framework.git
+    git clone https://github.com/encode/django-rest-framework
 
 Changes should broadly follow the [PEP 8][pep-8] style conventions, and we recommend you set up your editor to automatically indicate non-conforming styles.
 
@@ -59,7 +59,7 @@ Changes should broadly follow the [PEP 8][pep-8] style conventions, and we recom
 To run the tests, clone the repository, and then:
 
     # Setup the virtual environment
-    virtualenv env
+    python3 -m venv env
     source env/bin/activate
     pip install django
     pip install -r requirements.txt
@@ -115,7 +115,7 @@ It's also useful to remember that if you have an outstanding pull request then p
 
 GitHub's documentation for working on pull requests is [available here][pull-requests].
 
-Always run the tests before submitting pull requests, and ideally run `tox` in order to check that your modifications are compatible with both Python 2 and Python 3, and that they run properly on all supported versions of Django.
+Always run the tests before submitting pull requests, and ideally run `tox` in order to check that your modifications are compatible on all supported versions of Python and Django.
 
 Once you've made a pull request take a look at the Travis build status in the GitHub interface and make sure the tests are running as you'd expect.
 
diff --git a/ISSUE_TEMPLATE.md b/ISSUE_TEMPLATE.md
index 55b3e531b..566bf9543 100644
--- a/ISSUE_TEMPLATE.md
+++ b/ISSUE_TEMPLATE.md
@@ -3,7 +3,7 @@
 - [ ] I have verified that that issue exists against the `master` branch of Django REST framework.
 - [ ] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
 - [ ] This is not a usage question. (Those should be directed to the [discussion group](https://groups.google.com/forum/#!forum/django-rest-framework) instead.)
-- [ ] This cannot be dealt with as a third party library. (We prefer new functionality to be [in the form of third party libraries](http://www.django-rest-framework.org/topics/third-party-resources/#about-third-party-packages) where possible.)
+- [ ] This cannot be dealt with as a third party library. (We prefer new functionality to be [in the form of third party libraries](https://www.django-rest-framework.org/community/third-party-packages/#about-third-party-packages) where possible.)
 - [ ] I have reduced the issue to the simplest possible case.
 - [ ] I have included a failing test as a pull request. (If you are unable to do so we can still accept the issue.)
 
diff --git a/LICENSE.md b/LICENSE.md
index 03213cbd6..3dea39c36 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 # License
 
-Copyright © 2011-present, [Encode OSS Ltd](http://www.encode.io/).
+Copyright © 2011-present, [Encode OSS Ltd](https://www.encode.io/).
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/README.md b/README.md
index b9c5d449d..b80b7fe01 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 **Awesome web-browsable Web APIs.**
 
-Full documentation for the project is available at [http://www.django-rest-framework.org][docs].
+Full documentation for the project is available at [https://www.django-rest-framework.org/][docs].
 
 ---
 
@@ -19,14 +19,15 @@ continued development by [signing up for a paid plan][funding].
 The initial aim is to provide a single full-time position on REST framework.
 *Every single sign-up makes a significant impact towards making that possible.*
 
-[![][rover-img]][rover-url]
 [![][sentry-img]][sentry-url]
 [![][stream-img]][stream-url]
-[![][machinalis-img]][machinalis-url]
 [![][rollbar-img]][rollbar-url]
 [![][cadre-img]][cadre-url]
+[![][kloudless-img]][kloudless-url]
+[![][release-history-img]][release-history-url]
+[![][lightson-img]][lightson-url]
 
-Many thanks to all our [wonderful sponsors][sponsors], and in particular to our premium backers, [Rover][rover-url], [Sentry][sentry-url], [Stream][stream-url], [Machinalis][machinalis-url], [Rollbar][rollbar-url], and [Cadre][cadre-url].
+Many thanks to all our [wonderful sponsors][sponsors], and in particular to our premium backers, [Sentry][sentry-url], [Stream][stream-url], [Rollbar][rollbar-url], [Cadre][cadre-url], [Kloudless][kloudless-url], [Release History][release-history-url], and [Lights On Software][lightson-url].
 
 ---
 
@@ -52,8 +53,11 @@ There is a live example API for testing purposes, [available here][sandbox].
 
 # Requirements
 
-* Python (2.7, 3.4, 3.5, 3.6)
-* Django (1.11, 2.0, 2.1)
+* Python (3.5, 3.6, 3.7)
+* Django (1.11, 2.0, 2.1, 2.2)
+
+We **highly recommend** and only officially support the latest patch release of
+each Python and Django series.
 
 # Installation
 
@@ -76,7 +80,7 @@ Startup up a new project like so...
 
     pip install django
     pip install djangorestframework
-    django-admin.py startproject example .
+    django-admin startproject example .
     ./manage.py migrate
     ./manage.py createsuperuser
 
@@ -142,14 +146,14 @@ You can now open the API in your browser at `http://127.0.0.1:8000/`, and view y
 You can also interact with the API using command line tools such as [`curl`](https://curl.haxx.se/). For example, to list the users endpoint:
 
     $ curl -H 'Accept: application/json; indent=4' -u admin:password http://127.0.0.1:8000/users/
-	[
-	    {
-	        "url": "http://127.0.0.1:8000/users/1/",
-	        "username": "admin",
-	        "email": "admin@example.com",
-	        "is_staff": true,
-	    }
-	]
+    [
+        {
+            "url": "http://127.0.0.1:8000/users/1/",
+            "username": "admin",
+            "email": "admin@example.com",
+            "is_staff": true,
+        }
+    ]
 
 Or to create a new user:
 
@@ -163,7 +167,7 @@ Or to create a new user:
 
 # Documentation & Support
 
-Full documentation for the project is available at [http://www.django-rest-framework.org][docs].
+Full documentation for the project is available at [https://www.django-rest-framework.org/][docs].
 
 For questions and support, use the [REST framework discussion group][group], or `#restframework` on freenode IRC.
 
@@ -191,28 +195,34 @@ Send a description of the issue via email to [rest-framework-security@googlegrou
 [rover-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/rover-readme.png
 [sentry-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/sentry-readme.png
 [stream-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/stream-readme.png
-[machinalis-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/machinalis-readme.png
 [rollbar-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/rollbar-readme.png
 [cadre-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/cadre-readme.png
+[load-impact-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/load-impact-readme.png
+[kloudless-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/kloudless-readme.png
+[release-history-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/release-history.png
+[lightson-img]: https://raw.githubusercontent.com/encode/django-rest-framework/master/docs/img/premium/lightson-readme.png
 
 [rover-url]: http://jobs.rover.com/
 [sentry-url]: https://getsentry.com/welcome/
 [stream-url]: https://getstream.io/try-the-api/?utm_source=drf&utm_medium=banner&utm_campaign=drf
-[machinalis-url]: https://hello.machinalis.co.uk/
 [rollbar-url]: https://rollbar.com/
 [cadre-url]: https://cadre.com/
+[load-impact-url]: https://loadimpact.com/?utm_campaign=Sponsorship%20links&utm_source=drf&utm_medium=drf
+[kloudless-url]: https://hubs.ly/H0f30Lf0
+[release-history-url]: https://releasehistory.io
+[lightson-url]: https://lightsonsoftware.com
 
-[oauth1-section]: http://www.django-rest-framework.org/api-guide/authentication/#django-rest-framework-oauth
-[oauth2-section]: http://www.django-rest-framework.org/api-guide/authentication/#django-oauth-toolkit
-[serializer-section]: http://www.django-rest-framework.org/api-guide/serializers/#serializers
-[modelserializer-section]: http://www.django-rest-framework.org/api-guide/serializers/#modelserializer
-[functionview-section]: http://www.django-rest-framework.org/api-guide/views/#function-based-views
-[generic-views]: http://www.django-rest-framework.org/api-guide/generic-views/
-[viewsets]: http://www.django-rest-framework.org/api-guide/viewsets/
-[routers]: http://www.django-rest-framework.org/api-guide/routers/
-[serializers]: http://www.django-rest-framework.org/api-guide/serializers/
-[authentication]: http://www.django-rest-framework.org/api-guide/authentication/
-[image]: http://www.django-rest-framework.org/img/quickstart.png
+[oauth1-section]: https://www.django-rest-framework.org/api-guide/authentication/#django-rest-framework-oauth
+[oauth2-section]: https://www.django-rest-framework.org/api-guide/authentication/#django-oauth-toolkit
+[serializer-section]: https://www.django-rest-framework.org/api-guide/serializers/#serializers
+[modelserializer-section]: https://www.django-rest-framework.org/api-guide/serializers/#modelserializer
+[functionview-section]: https://www.django-rest-framework.org/api-guide/views/#function-based-views
+[generic-views]: https://www.django-rest-framework.org/api-guide/generic-views/
+[viewsets]: https://www.django-rest-framework.org/api-guide/viewsets/
+[routers]: https://www.django-rest-framework.org/api-guide/routers/
+[serializers]: https://www.django-rest-framework.org/api-guide/serializers/
+[authentication]: https://www.django-rest-framework.org/api-guide/authentication/
+[image]: https://www.django-rest-framework.org/img/quickstart.png
 
-[docs]: http://www.django-rest-framework.org/
+[docs]: https://www.django-rest-framework.org/
 [security-mail]: mailto:rest-framework-security@googlegroups.com
diff --git a/codecov.yml b/codecov.yml
index edccd5c35..c2336342e 100644
--- a/codecov.yml
+++ b/codecov.yml
@@ -1,8 +1,11 @@
 coverage:
-  status:
-    project: false
-    patch: true
-    changes: true
+  precision: 2
+  round: down
+  range: "80...100"
 
-comment:
-  layout: "diff"
+  status:
+    project: yes
+    patch: no
+    changes: no
+
+comment: off
diff --git a/docs/api-guide/authentication.md b/docs/api-guide/authentication.md
index e10e3109a..52650299f 100644
--- a/docs/api-guide/authentication.md
+++ b/docs/api-guide/authentication.md
@@ -137,7 +137,7 @@ You'll also need to create tokens for your users.
     from rest_framework.authtoken.models import Token
 
     token = Token.objects.create(user=...)
-    print token.key
+    print(token.key)
 
 For clients to authenticate, the token key should be included in the `Authorization` HTTP header.  The key should be prefixed by the string literal "Token", with whitespace separating the two strings.  For example:
 
@@ -354,7 +354,7 @@ The following third party packages are also available.
 
 ## Django OAuth Toolkit
 
-The [Django OAuth Toolkit][django-oauth-toolkit] package provides OAuth 2.0 support, and works with Python 2.7 and Python 3.3+. The package is maintained by [Evonove][evonove] and uses the excellent [OAuthLib][oauthlib].  The package is well documented, and well supported and is currently our **recommended package for OAuth 2.0 support**.
+The [Django OAuth Toolkit][django-oauth-toolkit] package provides OAuth 2.0 support and works with Python 3.4+. The package is maintained by [Evonove][evonove] and uses the excellent [OAuthLib][oauthlib].  The package is well documented, and well supported and is currently our **recommended package for OAuth 2.0 support**.
 
 #### Installation & configuration
 
@@ -391,13 +391,9 @@ Install the package using `pip`.
 
 For details on configuration and usage see the Django REST framework OAuth documentation for [authentication][django-rest-framework-oauth-authentication] and [permissions][django-rest-framework-oauth-permissions].
 
-## Digest Authentication
-
-HTTP digest authentication is a widely implemented scheme that was intended to replace HTTP basic authentication, and which provides a simple encrypted authentication mechanism. [Juan Riaza][juanriaza] maintains the [djangorestframework-digestauth][djangorestframework-digestauth] package which provides HTTP digest authentication support for REST framework.
-
 ## JSON Web Token Authentication
 
-JSON Web Token is a fairly new standard which can be used for token-based authentication. Unlike the built-in TokenAuthentication scheme, JWT Authentication doesn't need to use a database to validate a token. [Blimp][blimp] maintains the [djangorestframework-jwt][djangorestframework-jwt] package which provides a JWT Authentication class as well as a mechanism for clients to obtain a JWT given the username and password. An alternative package for JWT authentication is [djangorestframework-simplejwt][djangorestframework-simplejwt] which provides different features as well as a pluggable token blacklist app.
+JSON Web Token is a fairly new standard which can be used for token-based authentication. Unlike the built-in TokenAuthentication scheme, JWT Authentication doesn't need to use a database to validate a token. A package for JWT authentication is [djangorestframework-simplejwt][djangorestframework-simplejwt] which provides some features as well as a pluggable token blacklist app.
 
 ## Hawk HTTP Authentication
 
@@ -445,8 +441,6 @@ HTTP Signature (currently a [IETF draft][http-signature-ietf-draft]) provides a
 [django-oauth-toolkit]: https://github.com/evonove/django-oauth-toolkit
 [evonove]: https://github.com/evonove/
 [oauthlib]: https://github.com/idan/oauthlib
-[blimp]: https://github.com/GetBlimp
-[djangorestframework-jwt]: https://github.com/GetBlimp/django-rest-framework-jwt
 [djangorestframework-simplejwt]: https://github.com/davesque/django-rest-framework-simplejwt
 [etoccalino]: https://github.com/etoccalino/
 [djangorestframework-httpsignature]: https://github.com/etoccalino/django-rest-framework-httpsignature
diff --git a/docs/api-guide/caching.md b/docs/api-guide/caching.md
index ff51aed06..5342345e4 100644
--- a/docs/api-guide/caching.md
+++ b/docs/api-guide/caching.md
@@ -13,7 +13,7 @@ provided in Django.
 
 Django provides a [`method_decorator`][decorator] to use
 decorators with class based views. This can be used with
-with other cache decorators such as [`cache_page`][page] and
+other cache decorators such as [`cache_page`][page] and
 [`vary_on_cookie`][cookie].
 
 ```python
diff --git a/docs/api-guide/fields.md b/docs/api-guide/fields.md
index 8d25d6c78..b2830d0c9 100644
--- a/docs/api-guide/fields.md
+++ b/docs/api-guide/fields.md
@@ -124,7 +124,14 @@ A boolean representation.
 
 When using HTML encoded form input be aware that omitting a value will always be treated as setting a field to `False`, even if it has a `default=True` option specified. This is because HTML checkbox inputs represent the unchecked state by omitting the value, so REST framework treats omission as if it is an empty checkbox input.
 
-Note that default `BooleanField` instances will be generated with a `required=False` option (since Django `models.BooleanField` is always `blank=True`). If you want to change this behaviour explicitly declare the `BooleanField` on the serializer class.
+Note that Django 2.1 removed the `blank` kwarg from `models.BooleanField`.
+Prior to Django 2.1 `models.BooleanField` fields were always `blank=True`. Thus
+since Django 2.1 default `serializers.BooleanField` instances will be generated
+without the `required` kwarg (i.e. equivalent to `required=True`) whereas with
+previous versions of Django, default `BooleanField` instances will be generated
+with a `required=False` option.  If you want to control this behaviour manually,
+explicitly declare the `BooleanField` on the serializer class, or use the
+`extra_kwargs` option to set the `required` flag.
 
 Corresponds to `django.db.models.fields.BooleanField`.
 
@@ -299,10 +306,11 @@ A date and time representation.
 
 Corresponds to `django.db.models.fields.DateTimeField`.
 
-**Signature:** `DateTimeField(format=api_settings.DATETIME_FORMAT, input_formats=None)`
+**Signature:** `DateTimeField(format=api_settings.DATETIME_FORMAT, input_formats=None, default_timezone=None)`
 
 * `format` - A string representing the output format. If not specified, this defaults to the same value as the `DATETIME_FORMAT` settings key, which will be `'iso-8601'` unless set. Setting to a format string indicates that `to_representation` return values should be coerced to string output. Format strings are described below. Setting this value to `None` indicates that Python `datetime` objects should be returned by `to_representation`. In this case the datetime encoding will be determined by the renderer.
 * `input_formats` - A list of strings representing the input formats which may be used to parse the date.  If not specified, the `DATETIME_INPUT_FORMATS` setting will be used, which defaults to `['iso-8601']`.
+* `default_timezone` - A `pytz.timezone` representing the timezone. If not specified and the `USE_TZ` setting is enabled, this defaults to the [current timezone][django-current-timezone]. If `USE_TZ` is disabled, then datetime objects will be naive.
 
 #### `DateTimeField` format strings.
 
@@ -440,9 +448,10 @@ Requires either the `Pillow` package or `PIL` package.  The `Pillow` package is
 
 A field class that validates a list of objects.
 
-**Signature**: `ListField(child=<A_FIELD_INSTANCE>, min_length=None, max_length=None)`
+**Signature**: `ListField(child=<A_FIELD_INSTANCE>, allow_empty=True, min_length=None, max_length=None)`
 
 - `child` - A field instance that should be used for validating the objects in the list. If this argument is not provided then objects in the list will not be validated.
+- `allow_empty` - Designates if empty lists are allowed.
 - `min_length` - Validates that the list contains no fewer than this number of elements.
 - `max_length` - Validates that the list contains no more than this number of elements.
 
@@ -463,9 +472,10 @@ We can now reuse our custom `StringListField` class throughout our application,
 
 A field class that validates a dictionary of objects. The keys in `DictField` are always assumed to be string values.
 
-**Signature**: `DictField(child=<A_FIELD_INSTANCE>)`
+**Signature**: `DictField(child=<A_FIELD_INSTANCE>, allow_empty=True)`
 
 - `child` - A field instance that should be used for validating the values in the dictionary. If this argument is not provided then values in the mapping will not be validated.
+- `allow_empty` - Designates if empty dictionaries are allowed.
 
 For example, to create a field that validates a mapping of strings to strings, you would write something like this:
 
@@ -480,9 +490,10 @@ You can also use the declarative style, as with `ListField`. For example:
 
 A preconfigured `DictField` that is compatible with Django's postgres `HStoreField`.
 
-**Signature**: `HStoreField(child=<A_FIELD_INSTANCE>)`
+**Signature**: `HStoreField(child=<A_FIELD_INSTANCE>, allow_empty=True)`
 
 - `child` - A field instance that is used for validating the values in the dictionary. The default child field accepts both empty strings and null values.
+- `allow_empty` - Designates if empty dictionaries are allowed.
 
 Note that the child field **must** be an instance of `CharField`, as the hstore extension stores values as strings.
 
@@ -621,7 +632,7 @@ Our `ColorField` class above currently does not perform any data validation.
 To indicate invalid data, we should raise a `serializers.ValidationError`, like so:
 
     def to_internal_value(self, data):
-        if not isinstance(data, six.text_type):
+        if not isinstance(data, str):
             msg = 'Incorrect type. Expected a string, but got %s'
             raise ValidationError(msg % type(data).__name__)
 
@@ -645,7 +656,7 @@ The `.fail()` method is a shortcut for raising `ValidationError` that takes a me
     }
 
     def to_internal_value(self, data):
-        if not isinstance(data, six.text_type):
+        if not isinstance(data, str):
             self.fail('incorrect_type', input_type=type(data).__name__)
 
         if not re.match(r'^rgb\([0-9]+,[0-9]+,[0-9]+\)$', data):
@@ -828,3 +839,4 @@ The [django-rest-framework-hstore][django-rest-framework-hstore] package provide
 [django-rest-framework-hstore]: https://github.com/djangonauts/django-rest-framework-hstore
 [django-hstore]: https://github.com/djangonauts/django-hstore
 [python-decimal-rounding-modes]: https://docs.python.org/3/library/decimal.html#rounding-modes
+[django-current-timezone]: https://docs.djangoproject.com/en/stable/topics/i18n/timezones/#default-time-zone-and-current-time-zone
diff --git a/docs/api-guide/filtering.md b/docs/api-guide/filtering.md
index e405535ba..8a500f386 100644
--- a/docs/api-guide/filtering.md
+++ b/docs/api-guide/filtering.md
@@ -127,7 +127,7 @@ Note that you can use both an overridden `.get_queryset()` and generic filtering
         """
         model = Product
         serializer_class = ProductSerializer
-        filter_class = ProductFilter
+        filterset_class = ProductFilter
 
         def get_queryset(self):
             user = self.request.user
@@ -160,13 +160,13 @@ Or add the filter backend to an individual View or ViewSet.
         ...
         filter_backends = (DjangoFilterBackend,)
 
-If all you need is simple equality-based filtering, you can set a `filter_fields` attribute on the view, or viewset, listing the set of fields you wish to filter against.
+If all you need is simple equality-based filtering, you can set a `filterset_fields` attribute on the view, or viewset, listing the set of fields you wish to filter against.
 
     class ProductList(generics.ListAPIView):
         queryset = Product.objects.all()
         serializer_class = ProductSerializer
         filter_backends = (DjangoFilterBackend,)
-        filter_fields = ('category', 'in_stock')
+        filterset_fields = ('category', 'in_stock')
 
 This will automatically create a `FilterSet` class for the given fields, and will allow you to make requests such as:
 
@@ -188,7 +188,7 @@ When in use, the browsable API will include a `SearchFilter` control:
 The `SearchFilter` class will only be applied if the view has a `search_fields` attribute set.  The `search_fields` attribute should be a list of names of text type fields on the model, such as `CharField` or `TextField`.
 
     from rest_framework import filters
-    
+
     class UserListView(generics.ListAPIView):
         queryset = User.objects.all()
         serializer_class = UserSerializer
@@ -218,6 +218,16 @@ For example:
 
 By default, the search parameter is named `'search`', but this may be overridden with the `SEARCH_PARAM` setting.
 
+To dynamically change search fields based on request content, it's possible to subclass the `SearchFilter` and override the `get_search_fields()` function. For example, the following subclass will only search on `title` if the query parameter `title_only` is in the request:
+
+    from rest_framework import filters
+    
+    class CustomSearchFilter(filters.SearchFilter):
+        def get_search_fields(self, view, request):
+            if request.query_params.get('title_only'):
+                return ('title',)
+            return super(CustomSearchFilter, self).get_search_fields(view, request)
+
 For more details, see the [Django documentation][search-django-admin].
 
 ---
@@ -285,6 +295,12 @@ The `ordering` attribute may be either a string or a list/tuple of strings.
 
 The `DjangoObjectPermissionsFilter` is intended to be used together with the [`django-guardian`][guardian] package, with custom `'view'` permissions added.  The filter will ensure that querysets only returns objects for which the user has the appropriate view permission.
 
+---
+
+**Note:** This filter has been deprecated as of version 3.9 and moved to the 3rd-party [`djangorestframework-guardian` package][django-rest-framework-guardian].
+
+---
+
 If you're using `DjangoObjectPermissionsFilter`, you'll probably also want to add an appropriate object permissions class, to ensure that users can only operate on instances if they have the appropriate object permissions.  The easiest way to do this is to subclass `DjangoObjectPermissions` and add `'view'` permissions to the `perms_map` attribute.
 
 A complete example using both `DjangoObjectPermissionsFilter` and `DjangoObjectPermissions` might look something like this.
@@ -292,9 +308,9 @@ A complete example using both `DjangoObjectPermissionsFilter` and `DjangoObjectP
 **permissions.py**:
 
     class CustomObjectPermissions(permissions.DjangoObjectPermissions):
-		"""
-		Similar to `DjangoObjectPermissions`, but adding 'view' permissions.
-		"""
+        """
+        Similar to `DjangoObjectPermissions`, but adding 'view' permissions.
+        """
         perms_map = {
             'GET': ['%(app_label)s.view_%(model_name)s'],
             'OPTIONS': ['%(app_label)s.view_%(model_name)s'],
@@ -308,11 +324,11 @@ A complete example using both `DjangoObjectPermissionsFilter` and `DjangoObjectP
 **views.py**:
 
     class EventViewSet(viewsets.ModelViewSet):
-    	"""
-    	Viewset that only lists events if user has 'view' permissions, and only
-    	allows operations on individual events if user has appropriate 'view', 'add',
-    	'change' or 'delete' permissions.
-		"""
+        """
+        Viewset that only lists events if user has 'view' permissions, and only
+        allows operations on individual events if user has appropriate 'view', 'add',
+        'change' or 'delete' permissions.
+        """
         queryset = Event.objects.all()
         serializer_class = EventSerializer
         filter_backends = (filters.DjangoObjectPermissionsFilter,)
@@ -388,6 +404,7 @@ The [djangorestframework-word-filter][django-rest-framework-word-search-filter]
 [view-permissions-blogpost]: https://blog.nyaruka.com/adding-a-view-permission-to-django-models
 [search-django-admin]: https://docs.djangoproject.com/en/stable/ref/contrib/admin/#django.contrib.admin.ModelAdmin.search_fields
 [django-rest-framework-filters]: https://github.com/philipn/django-rest-framework-filters
+[django-rest-framework-guardian]: https://github.com/rpkilby/django-rest-framework-guardian
 [django-rest-framework-word-search-filter]: https://github.com/trollknurr/django-rest-framework-word-search-filter
 [django-url-filter]: https://github.com/miki725/django-url-filter
 [drf-url-filter]: https://github.com/manjitkumar/drf-url-filters
diff --git a/docs/api-guide/format-suffixes.md b/docs/api-guide/format-suffixes.md
index 05dde47f2..629f003f3 100644
--- a/docs/api-guide/format-suffixes.md
+++ b/docs/api-guide/format-suffixes.md
@@ -90,4 +90,4 @@ It is actually a misconception.  For example, take the following quote from Roy
 The quote does not mention Accept headers, but it does make it clear that format suffixes should be considered an acceptable pattern.
 
 [cite]: http://tech.groups.yahoo.com/group/rest-discuss/message/5857
-[cite2]: http://tech.groups.yahoo.com/group/rest-discuss/message/14844
+[cite2]: https://groups.yahoo.com/neo/groups/rest-discuss/conversations/topics/14844
diff --git a/docs/api-guide/metadata.md b/docs/api-guide/metadata.md
index affeea61c..a3ba9ac20 100644
--- a/docs/api-guide/metadata.md
+++ b/docs/api-guide/metadata.md
@@ -117,5 +117,5 @@ If you wish to do so, it also provides an exporter that can export those schema
 
 [cite]: https://tools.ietf.org/html/rfc7231#section-4.3.7
 [no-options]: https://www.mnot.net/blog/2012/10/29/NO_OPTIONS
-[json-schema]: http://json-schema.org/
+[json-schema]: https://json-schema.org/
 [drf-schema-adapter]: https://github.com/drf-forms/drf-schema-adapter
diff --git a/docs/api-guide/pagination.md b/docs/api-guide/pagination.md
index c1e487c67..99612ef46 100644
--- a/docs/api-guide/pagination.md
+++ b/docs/api-guide/pagination.md
@@ -46,7 +46,7 @@ If you want to modify particular aspects of the pagination style, you'll want to
         page_size_query_param = 'page_size'
         max_page_size = 1000
 
-You can then apply your new style to a view using the `.pagination_class` attribute:
+You can then apply your new style to a view using the `pagination_class` attribute:
 
     class BillingRecordsView(generics.ListAPIView):
         queryset = Billing.objects.all()
@@ -311,7 +311,7 @@ The [`drf-proxy-pagination` package][drf-proxy-pagination] includes a `ProxyPagi
 
 ## link-header-pagination
 
-The [`django-rest-framework-link-header-pagination` package][drf-link-header-pagination] includes a `LinkHeaderPagination` class which provides pagination via an HTTP `Link` header as desribed in [Github's developer documentation](github-link-pagination).
+The [`django-rest-framework-link-header-pagination` package][drf-link-header-pagination] includes a `LinkHeaderPagination` class which provides pagination via an HTTP `Link` header as described in [Github's developer documentation](github-link-pagination).
 
 [cite]: https://docs.djangoproject.com/en/stable/topics/pagination/
 [link-header]: ../img/link-header-pagination.png
@@ -319,5 +319,5 @@ The [`django-rest-framework-link-header-pagination` package][drf-link-header-pag
 [paginate-by-max-mixin]: https://chibisov.github.io/drf-extensions/docs/#paginatebymaxmixin
 [drf-proxy-pagination]: https://github.com/tuffnatty/drf-proxy-pagination
 [drf-link-header-pagination]: https://github.com/tbeadle/django-rest-framework-link-header-pagination
-[disqus-cursor-api]: http://cra.mr/2011/03/08/building-cursors-for-the-disqus-api
+[disqus-cursor-api]: https://cra.mr/2011/03/08/building-cursors-for-the-disqus-api
 [float_cursor_pagination_example]: https://gist.github.com/keturn/8bc88525a183fd41c73ffb729b8865be#file-fpcursorpagination-py
diff --git a/docs/api-guide/parsers.md b/docs/api-guide/parsers.md
index 09ce4556f..be48ae7e5 100644
--- a/docs/api-guide/parsers.md
+++ b/docs/api-guide/parsers.md
@@ -102,7 +102,7 @@ If it is called without a `filename` URL keyword argument, then the client must
 
 ##### Notes:
 
-* The `FileUploadParser` is for usage with native clients that can upload the file as a raw data request.  For web-based uploads, or for native clients with multipart upload support, you should use the `MultiPartParser` parser instead.
+* The `FileUploadParser` is for usage with native clients that can upload the file as a raw data request.  For web-based uploads, or for native clients with multipart upload support, you should use the `MultiPartParser` instead.
 * Since this parser's `media_type` matches any content type, `FileUploadParser` should generally be the only parser set on an API view.
 * `FileUploadParser` respects Django's standard `FILE_UPLOAD_HANDLERS` setting, and the `request.upload_handlers` attribute.  See the [Django documentation][upload-handlers] for more details.
 
diff --git a/docs/api-guide/permissions.md b/docs/api-guide/permissions.md
index f5fc214cd..901f810c5 100644
--- a/docs/api-guide/permissions.md
+++ b/docs/api-guide/permissions.md
@@ -10,9 +10,9 @@ Together with [authentication] and [throttling], permissions determine whether a
 
 Permission checks are always run at the very start of the view, before any other code is allowed to proceed.  Permission checks will typically use the authentication information in the `request.user` and `request.auth` properties to determine if the incoming request should be permitted.
 
-Permissions are used to grant or deny access different classes of users to different parts of the API.
+Permissions are used to grant or deny access for different classes of users to different parts of the API.
 
-The simplest style of permission would be to allow access to any authenticated user, and deny access to any unauthenticated user. This corresponds the `IsAuthenticated` class in REST framework.
+The simplest style of permission would be to allow access to any authenticated user, and deny access to any unauthenticated user. This corresponds to the `IsAuthenticated` class in REST framework.
 
 A slightly less strict style of permission would be to allow full access to authenticated users, but allow read-only access to unauthenticated users. This corresponds to the `IsAuthenticatedOrReadOnly` class in REST framework.
 
@@ -48,6 +48,19 @@ For example:
         self.check_object_permissions(self.request, obj)
         return obj
 
+---
+
+**Note**: With the exception of `DjangoObjectPermissions`, the provided
+permission classes in `rest_framework.permissions` **do not** implement the
+methods necessary to check object permissions.
+
+If you wish to use the provided permission classes in order to check object
+permissions, **you must** subclass them and implement the
+`has_object_permission()` method described in the [_Custom
+permissions_](#custom-permissions) section (below).
+
+---
+
 #### Limitations of object level permissions
 
 For performance reasons the generic views will not automatically apply object level permissions to each instance in a queryset when returning a list of objects.
@@ -102,6 +115,27 @@ Or, if you're using the `@api_view` decorator with function based views.
 
 __Note:__ when you set new permission classes through class attribute or decorators you're telling the view to ignore the default list set over the __settings.py__ file.
 
+Provided they inherit from `rest_framework.permissions.BasePermission`, permissions can be composed using standard Python bitwise operators. For example, `IsAuthenticatedOrReadOnly` could be written:
+
+    from rest_framework.permissions import BasePermission, IsAuthenticated, SAFE_METHODS
+    from rest_framework.response import Response
+    from rest_framework.views import APIView
+
+    class ReadOnly(BasePermission):
+        def has_permission(self, request, view):
+            return request.method in SAFE_METHODS
+
+    class ExampleView(APIView):
+        permission_classes = (IsAuthenticated|ReadOnly,)
+
+        def get(self, request, format=None):
+            content = {
+                'status': 'request was permitted'
+            }
+            return Response(content)
+
+__Note:__ it supports & (and), | (or) and ~ (not).
+
 ---
 
 # API Reference
@@ -168,9 +202,7 @@ As with `DjangoModelPermissions` you can use custom model permissions by overrid
 
 ---
 
-**Note**: If you need object level `view` permissions for `GET`, `HEAD` and `OPTIONS` requests, you'll want to consider also adding the `DjangoObjectPermissionsFilter` class to ensure that list endpoints only return results including objects for which the user has appropriate view permissions.
-
----
+**Note**: If you need object level `view` permissions for `GET`, `HEAD` and `OPTIONS` requests and are using django-guardian for your object-level permissions backend, you'll want to consider using the `DjangoObjectPermissionsFilter` class provided by the [`djangorestframework-guardian` package][django-rest-framework-guardian]. It ensures that list endpoints only return results including objects for which the user has appropriate view permissions.
 
 ---
 
@@ -255,7 +287,7 @@ The [Composed Permissions][composed-permissions] package provides a simple way t
 
 ## REST Condition
 
-The [REST Condition][rest-condition] package is another extension for building complex permissions in a simple and convenient way.  The extension allows you to combine permissions with logical operators.
+The [REST Condition][rest-condition] package is another extension for building complex permissions in a simple and convenient way. The extension allows you to combine permissions with logical operators.
 
 ## DRY Rest Permissions
 
@@ -265,9 +297,9 @@ The [DRY Rest Permissions][dry-rest-permissions] package provides the ability to
 
 The [Django Rest Framework Roles][django-rest-framework-roles] package makes it easier to parameterize your API over multiple types of users.
 
-## Django Rest Framework API Key
+## Django REST Framework API Key
 
-The [Django Rest Framework API Key][django-rest-framework-api-key] package allows you to ensure that every request made to the server requires an API key header. You can generate one from the django admin interface.
+The [Django REST Framework API Key][djangorestframework-api-key] package provides the ability to authorize clients based on customizable API key headers. This package is targeted at situations in which regular user-based authentication (e.g. `TokenAuthentication`) is not suitable, e.g. allowing non-human clients to safely use your API. API keys are generated and validated through cryptographic methods and can be created and revoked from the Django admin interface at anytime.
 
 ## Django Rest Framework Role Filters
 
@@ -285,5 +317,6 @@ The [Django Rest Framework Role Filters][django-rest-framework-role-filters] pac
 [rest-condition]: https://github.com/caxap/rest_condition
 [dry-rest-permissions]: https://github.com/Helioscene/dry-rest-permissions
 [django-rest-framework-roles]: https://github.com/computer-lab/django-rest-framework-roles
-[django-rest-framework-api-key]: https://github.com/manosim/django-rest-framework-api-key
+[djangorestframework-api-key]: https://github.com/florimondmanca/djangorestframework-api-key
 [django-rest-framework-role-filters]: https://github.com/allisson/django-rest-framework-role-filters
+[django-rest-framework-guardian]: https://github.com/rpkilby/django-rest-framework-guardian
diff --git a/docs/api-guide/relations.md b/docs/api-guide/relations.md
index 02ecf5b12..2048cd923 100644
--- a/docs/api-guide/relations.md
+++ b/docs/api-guide/relations.md
@@ -2,11 +2,9 @@ source: relations.py
 
 # Serializer relations
 
-> Bad programmers worry about the code.
-> Good programmers worry about data structures and their relationships.
+> Data structures, not algorithms, are central to programming.
 >
-> &mdash; [Linus Torvalds][cite]
-
+> &mdash; [Rob Pike][cite]
 
 Relational fields are used to represent model relationships.  They can be applied to `ForeignKey`, `ManyToManyField` and `OneToOneField` relationships, as well as to reverse relationships, and custom relationships such as `GenericForeignKey`.
 
@@ -24,7 +22,7 @@ To do so, open the Django shell, using `python manage.py shell`, then import the
 
     >>> from myapp.serializers import AccountSerializer
     >>> serializer = AccountSerializer()
-    >>> print repr(serializer)  # Or `print(repr(serializer))` in Python 3.x.
+    >>> print(repr(serializer))
     AccountSerializer():
         id = IntegerField(label='ID', read_only=True)
         name = CharField(allow_blank=True, max_length=100, required=False)
@@ -48,12 +46,12 @@ In order to explain the various types of relational fields, we'll use a couple o
             unique_together = ('album', 'order')
             ordering = ['order']
 
-        def __unicode__(self):
+        def __str__(self):
             return '%d: %s' % (self.order, self.title)
 
 ## StringRelatedField
 
-`StringRelatedField` may be used to represent the target of the relationship using its `__unicode__` method.
+`StringRelatedField` may be used to represent the target of the relationship using its `__str__` method.
 
 For example, the following serializer.
 
@@ -512,7 +510,7 @@ For example, given the following model for a tag, which has a generic relationsh
         object_id = models.PositiveIntegerField()
         tagged_object = GenericForeignKey('content_type', 'object_id')
 
-        def __unicode__(self):
+        def __str__(self):
             return self.tag_name
 
 And the following two models, which may have associated tags:
@@ -578,6 +576,8 @@ If you explicitly specify a relational field pointing to a
 ``ManyToManyField`` with a through model, be sure to set ``read_only``
 to ``True``.
 
+If you wish to represent [extra fields on a through model][django-intermediary-manytomany] then you may serialize the through model as [a nested object][dealing-with-nested-objects].
+
 ---
 
 # Third Party Packages
@@ -592,9 +592,11 @@ The [drf-nested-routers package][drf-nested-routers] provides routers and relati
 
 The [rest-framework-generic-relations][drf-nested-relations] library provides read/write serialization for generic foreign keys.
 
-[cite]: https://lwn.net/Articles/193245/
+[cite]: http://users.ece.utexas.edu/~adnan/pike.html
 [reverse-relationships]: https://docs.djangoproject.com/en/stable/topics/db/queries/#following-relationships-backward
-[routers]: http://www.django-rest-framework.org/api-guide/routers#defaultrouter
+[routers]: https://www.django-rest-framework.org/api-guide/routers#defaultrouter
 [generic-relations]: https://docs.djangoproject.com/en/stable/ref/contrib/contenttypes/#id1
 [drf-nested-routers]: https://github.com/alanjds/drf-nested-routers
 [drf-nested-relations]: https://github.com/Ian-Foote/rest-framework-generic-relations
+[django-intermediary-manytomany]: https://docs.djangoproject.com/en/2.2/topics/db/models/#intermediary-manytomany
+[dealing-with-nested-objects]: https://www.django-rest-framework.org/api-guide/serializers/#dealing-with-nested-objects
diff --git a/docs/api-guide/renderers.md b/docs/api-guide/renderers.md
index d720dffc5..4ec409681 100644
--- a/docs/api-guide/renderers.md
+++ b/docs/api-guide/renderers.md
@@ -89,7 +89,7 @@ The default JSON encoding style can be altered using the `UNICODE_JSON` and `COM
 
 **.media_type**: `application/json`
 
-**.format**: `'.json'`
+**.format**: `'json'`
 
 **.charset**: `None`
 
@@ -127,7 +127,7 @@ See the [_HTML & Forms_ Topic Page][html-and-forms] for further examples of `Tem
 
 **.media_type**: `text/html`
 
-**.format**: `'.html'`
+**.format**: `'html'`
 
 **.charset**: `utf-8`
 
@@ -149,7 +149,7 @@ You can use `StaticHTMLRenderer` either to return regular HTML pages using REST
 
 **.media_type**: `text/html`
 
-**.format**: `'.html'`
+**.format**: `'html'`
 
 **.charset**: `utf-8`
 
@@ -165,7 +165,7 @@ This renderer will determine which other renderer would have been given highest
 
 **.media_type**: `text/html`
 
-**.format**: `'.api'`
+**.format**: `'api'`
 
 **.charset**: `utf-8`
 
@@ -200,7 +200,7 @@ Note that views that have nested or list serializers for their input won't work
 
 **.media_type**: `text/html`
 
-**.format**: `'.admin'`
+**.format**: `'admin'`
 
 **.charset**: `utf-8`
 
@@ -224,7 +224,7 @@ For more information see the [HTML & Forms][html-and-forms] documentation.
 
 **.media_type**: `text/html`
 
-**.format**: `'.form'`
+**.format**: `'form'`
 
 **.charset**: `utf-8`
 
@@ -236,7 +236,7 @@ This renderer is used for rendering HTML multipart form data.  **It is not suita
 
 **.media_type**: `multipart/form-data; boundary=BoUnDaRyStRiNg`
 
-**.format**: `'.multipart'`
+**.format**: `'multipart'`
 
 **.charset**: `utf-8`
 
@@ -521,13 +521,13 @@ Comma-separated values are a plain-text tabular data format, that can be easily
 [browser-accept-headers]: http://www.gethifi.com/blog/browser-rest-http-accept-headers
 [testing]: testing.md
 [HATEOAS]: http://timelessrepo.com/haters-gonna-hateoas
-[quote]: http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
+[quote]: https://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
 [application/vnd.github+json]: https://developer.github.com/v3/media/
 [application/vnd.collection+json]: http://www.amundsen.com/media-types/collection/
 [django-error-views]: https://docs.djangoproject.com/en/stable/topics/http/views/#customizing-error-views
 [rest-framework-jsonp]: https://jpadilla.github.io/django-rest-framework-jsonp/
 [cors]: https://www.w3.org/TR/cors/
-[cors-docs]: http://www.django-rest-framework.org/topics/ajax-csrf-cors/
+[cors-docs]: https://www.django-rest-framework.org/topics/ajax-csrf-cors/
 [jsonp-security]: https://stackoverflow.com/questions/613962/is-jsonp-safe-to-use
 [rest-framework-yaml]: https://jpadilla.github.io/django-rest-framework-yaml/
 [rest-framework-xml]: https://jpadilla.github.io/django-rest-framework-xml/
diff --git a/docs/api-guide/requests.md b/docs/api-guide/requests.md
index 83a38d1c3..28450f082 100644
--- a/docs/api-guide/requests.md
+++ b/docs/api-guide/requests.md
@@ -50,7 +50,7 @@ The request exposes some properties that allow you to determine the result of th
 
 ## .accepted_renderer
 
-The renderer instance what was selected by the content negotiation stage.
+The renderer instance that was selected by the content negotiation stage.
 
 ## .accepted_media_type
 
@@ -90,7 +90,7 @@ You won't typically need to access this property.
 
 ---
 
-**Note:** You may see a `WrappedAttributeError` raised when calling the `.user` or `.auth` properties. These errors originate from an authenticator as a standard `AttributeError`, however it's necessary that they be re-raised as a different exception type in order to prevent them from being suppressed by the outer property access. Python will not recognize that the `AttributeError` orginates from the authenticator and will instaed assume that the request object does not have a `.user` or `.auth` property. The authenticator will need to be fixed.
+**Note:** You may see a `WrappedAttributeError` raised when calling the `.user` or `.auth` properties. These errors originate from an authenticator as a standard `AttributeError`, however it's necessary that they be re-raised as a different exception type in order to prevent them from being suppressed by the outer property access. Python will not recognize that the `AttributeError` orginates from the authenticator and will instead assume that the request object does not have a `.user` or `.auth` property. The authenticator will need to be fixed.
 
 ---
 
diff --git a/docs/api-guide/routers.md b/docs/api-guide/routers.md
index d3ebd6866..09c6c39cb 100644
--- a/docs/api-guide/routers.md
+++ b/docs/api-guide/routers.md
@@ -325,7 +325,7 @@ The [wq.db package][wq.db] provides an advanced [ModelRouter][wq.db-router] clas
 
 The [`DRF-extensions` package][drf-extensions] provides [routers][drf-extensions-routers] for creating [nested viewsets][drf-extensions-nested-viewsets], [collection level controllers][drf-extensions-collection-level-controllers] with [customizable endpoint names][drf-extensions-customizable-endpoint-names].
 
-[cite]: http://guides.rubyonrails.org/routing.html
+[cite]: https://guides.rubyonrails.org/routing.html
 [route-decorators]: viewsets.md#marking-extra-actions-for-routing
 [drf-nested-routers]: https://github.com/alanjds/drf-nested-routers
 [wq.db]: https://wq.io/wq.db
diff --git a/docs/api-guide/schemas.md b/docs/api-guide/schemas.md
index 6ad259588..b09b1606e 100644
--- a/docs/api-guide/schemas.md
+++ b/docs/api-guide/schemas.md
@@ -10,12 +10,50 @@ API schemas are a useful tool that allow for a range of use cases, including
 generating reference documentation, or driving dynamic client libraries that
 can interact with your API.
 
-## Install Core API
+## Install Core API & PyYAML
 
 You'll need to install the `coreapi` package in order to add schema support
-for REST framework.
+for REST framework. You probably also want to install `pyyaml`, so that you
+can render the schema into the commonly used YAML-based OpenAPI format.
 
-    pip install coreapi
+    pip install coreapi pyyaml
+
+## Quickstart
+
+There are two different ways you can serve a schema description for your API.
+
+### Generating a schema with the `generateschema` management command
+
+To generate a static API schema, use the `generateschema` management command.
+
+```shell
+$ python manage.py generateschema > schema.yml
+```
+
+Once you've generated a schema in this way you can annotate it with any
+additional information that cannot be automatically inferred by the schema
+generator.
+
+You might want to check your API schema into version control and update it
+with each new release, or serve the API schema from your site's static media.
+
+### Adding a view with `get_schema_view`
+
+To add a dynamically generated schema view to your API, use `get_schema_view`.
+
+```python
+from rest_framework.schemas import get_schema_view
+
+schema_view = get_schema_view(title="Example API")
+
+urlpatterns = [
+    url('^schema$', schema_view),
+    ...
+]
+```
+
+See below [for more details](#the-get_schema_view-shortcut) on customizing a
+dynamically generated schema view.
 
 ## Internal schema representation
 
@@ -71,38 +109,19 @@ endpoint:
 In order to be presented in an HTTP response, the internal representation
 has to be rendered into the actual bytes that are used in the response.
 
+REST framework includes a few different renderers that you can use for
+encoding the API schema.
+
+* `renderers.OpenAPIRenderer` - Renders into YAML-based [OpenAPI][open-api], the most widely used API schema format.
+* `renderers.JSONOpenAPIRenderer` - Renders into JSON-based [OpenAPI][open-api].
+* `renderers.CoreJSONRenderer` - Renders into [Core JSON][corejson], a format designed for
+use with the `coreapi` client library.
+
+
 [Core JSON][corejson] is designed as a canonical format for use with Core API.
 REST framework includes a renderer class for handling this media type, which
 is available as `renderers.CoreJSONRenderer`.
 
-### Alternate schema formats
-
-Other schema formats such as [Open API][open-api] ("Swagger"),
-[JSON HyperSchema][json-hyperschema], or [API Blueprint][api-blueprint] can also
-be supported by implementing a custom renderer class that handles converting a
-`Document` instance into a bytestring representation.
-
-If there is a Core API codec package that supports encoding into the format you
-want to use then implementing the renderer class can be done by using the codec.
-
-#### Example
-
-For example, the `openapi_codec` package provides support for encoding or decoding
-to the Open API ("Swagger") format:
-
-    from rest_framework import renderers
-    from openapi_codec import OpenAPICodec
-
-    class SwaggerRenderer(renderers.BaseRenderer):
-        media_type = 'application/openapi+json'
-        format = 'swagger'
-
-        def render(self, data, media_type=None, renderer_context=None):
-            codec = OpenAPICodec()
-            return codec.dump(data)
-
-
-
 
 ## Schemas vs Hypermedia
 
@@ -146,7 +165,7 @@ example above.
 
 Automatic schema generation is provided by the `SchemaGenerator` class.
 
-`SchemaGenerator` processes a list of routed URL pattterns and compiles the
+`SchemaGenerator` processes a list of routed URL patterns and compiles the
 appropriately structured Core API Document.
 
 Basic usage is just to provide the title for your schema and call
@@ -325,13 +344,12 @@ ROOT_URLCONF setting.
 May be used to pass the set of renderer classes that can be used to render the API root endpoint.
 
     from rest_framework.schemas import get_schema_view
-    from rest_framework.renderers import CoreJSONRenderer
-    from my_custom_package import APIBlueprintRenderer
+    from rest_framework.renderers import JSONOpenAPIRenderer
 
     schema_view = get_schema_view(
         title='Server Monitoring API',
         url='https://www.example.org/api/',
-        renderer_classes=[CoreJSONRenderer, APIBlueprintRenderer]
+        renderer_classes=[JSONOpenAPIRenderer]
     )
 
 #### `patterns`
@@ -364,7 +382,6 @@ Defaults to `settings.DEFAULT_AUTHENTICATION_CLASSES`
 May be used to specify the list of permission classes that will apply to the schema endpoint.
 Defaults to `settings.DEFAULT_PERMISSION_CLASSES`
 
-
 ## Using an explicit schema view
 
 If you need a little more control than the `get_schema_view()` shortcut gives you,
@@ -386,7 +403,7 @@ return the schema.
     generator = schemas.SchemaGenerator(title='Bookings API')
 
     @api_view()
-    @renderer_classes([renderers.CoreJSONRenderer])
+    @renderer_classes([renderers.OpenAPIRenderer])
     def schema_view(request):
         schema = generator.get_schema(request)
         return response.Response(schema)
@@ -408,7 +425,7 @@ In order to present a schema with endpoints filtered by user permissions,
 you need to pass the `request` argument to the `get_schema()` method, like so:
 
     @api_view()
-    @renderer_classes([renderers.CoreJSONRenderer])
+    @renderer_classes([renderers.OpenAPIRenderer])
     def schema_view(request):
         generator = schemas.SchemaGenerator(title='Bookings API')
         return response.Response(generator.get_schema(request=request))
@@ -432,21 +449,10 @@ representation.
     )
 
     @api_view()
-    @renderer_classes([renderers.CoreJSONRenderer])
+    @renderer_classes([renderers.OpenAPIRenderer])
     def schema_view(request):
         return response.Response(schema)
 
-## Static schema file
-
-A final option is to write your API schema as a static file, using one
-of the available formats, such as Core JSON or Open API.
-
-You could then either:
-
-* Write a schema definition as a static file, and [serve the static file directly][static-files].
-* Write a schema definition that is loaded using `Core API`, and then
-  rendered to one of many available formats, depending on the client request.
-
 ---
 
 # Schemas as documentation
@@ -535,7 +541,7 @@ Arguments:
 Returns a `coreapi.Document` instance that represents the API schema.
 
     @api_view
-    @renderer_classes([renderers.CoreJSONRenderer])
+    @renderer_classes([renderers.OpenAPIRenderer])
     def schema_view(request):
         generator = schemas.SchemaGenerator(title='Bookings API')
         return Response(generator.get_schema())
@@ -818,23 +824,15 @@ A short description of the meaning and intended usage of the input field.
 
 ## drf-yasg - Yet Another Swagger Generator
 
-[drf-yasg][drf-yasg] generates [OpenAPI][open-api] documents suitable for code generation - nested schemas, 
+[drf-yasg][drf-yasg] generates [OpenAPI][open-api] documents suitable for code generation - nested schemas,
 named models, response bodies, enum/pattern/min/max validators, form parameters, etc.
 
-
-## DRF OpenAPI
-
-[DRF OpenAPI][drf-openapi] renders the schema generated by Django Rest Framework
-in [OpenAPI][open-api] format.
-
-
 [cite]: https://blog.heroku.com/archives/2014/1/8/json_schema_for_heroku_platform_api
-[coreapi]: http://www.coreapi.org/
-[corejson]: http://www.coreapi.org/specification/encoding/#core-json-encoding
+[coreapi]: https://www.coreapi.org/
+[corejson]: https://www.coreapi.org/specification/encoding/#core-json-encoding
 [drf-yasg]: https://github.com/axnsan12/drf-yasg/
 [open-api]: https://openapis.org/
-[drf-openapi]: https://github.com/limdauto/drf_openapi
-[json-hyperschema]: http://json-schema.org/latest/json-schema-hypermedia.html
+[json-hyperschema]: https://json-schema.org/latest/json-schema-hypermedia.html
 [api-blueprint]: https://apiblueprint.org/
 [static-files]: https://docs.djangoproject.com/en/stable/howto/static-files/
 [named-arguments]: https://docs.djangoproject.com/en/stable/topics/http/urls/#named-groups
diff --git a/docs/api-guide/serializers.md b/docs/api-guide/serializers.md
index 7cf7a6974..feb5651f7 100644
--- a/docs/api-guide/serializers.md
+++ b/docs/api-guide/serializers.md
@@ -57,10 +57,10 @@ At this point we've translated the model instance into Python native datatypes.
 
 Deserialization is similar. First we parse a stream into Python native datatypes...
 
-    from django.utils.six import BytesIO
+    import io
     from rest_framework.parsers import JSONParser
 
-    stream = BytesIO(json)
+    stream = io.BytesIO(json)
     data = JSONParser().parse(stream)
 
 ...then we restore those native datatypes into a dictionary of validated data.
@@ -152,7 +152,7 @@ When deserializing data, you always need to call `is_valid()` before attempting
     serializer.is_valid()
     # False
     serializer.errors
-    # {'email': [u'Enter a valid e-mail address.'], 'created': [u'This field is required.']}
+    # {'email': ['Enter a valid e-mail address.'], 'created': ['This field is required.']}
 
 Each key in the dictionary will be the field name, and the values will be lists of strings of any error messages corresponding to that field.  The `non_field_errors` key may also be present, and will list any general validation errors. The name of the `non_field_errors` key may be customized using the `NON_FIELD_ERRORS_KEY` REST framework setting.
 
@@ -208,7 +208,7 @@ To do any other validation that requires access to multiple fields, add a method
 
         def validate(self, data):
             """
-            Check that the start is before the stop.
+            Check that start is before finish.
             """
             if data['start'] > data['finish']:
                 raise serializers.ValidationError("finish must occur after start")
@@ -253,7 +253,7 @@ When passing data to a serializer instance, the unmodified data will be made ava
 By default, serializers must be passed values for all required fields or they will raise validation errors. You can use the `partial` argument in order to allow partial updates.
 
     # Update `comment` with partial data
-    serializer = CommentSerializer(comment, data={'content': u'foo bar'}, partial=True)
+    serializer = CommentSerializer(comment, data={'content': 'foo bar'}, partial=True)
 
 ## Dealing with nested objects
 
@@ -293,7 +293,7 @@ When dealing with nested representations that support deserializing the data, an
     serializer.is_valid()
     # False
     serializer.errors
-    # {'user': {'email': [u'Enter a valid e-mail address.']}, 'created': [u'This field is required.']}
+    # {'user': {'email': ['Enter a valid e-mail address.']}, 'created': ['This field is required.']}
 
 Similarly, the `.validated_data` property will include nested data structures.
 
@@ -415,7 +415,7 @@ You can provide arbitrary additional context by passing a `context` argument whe
 
     serializer = AccountSerializer(account, context={'request': request})
     serializer.data
-    # {'id': 6, 'owner': u'denvercoder9', 'created': datetime.datetime(2013, 2, 12, 09, 44, 56, 678870), 'details': 'http://example.com/accounts/6/details'}
+    # {'id': 6, 'owner': 'denvercoder9', 'created': datetime.datetime(2013, 2, 12, 09, 44, 56, 678870), 'details': 'http://example.com/accounts/6/details'}
 
 The context dictionary can be used within any serializer field logic, such as a custom `.to_representation()` method, by accessing the `self.context` attribute.
 
@@ -572,6 +572,8 @@ This option is a dictionary, mapping field names to a dictionary of keyword argu
             user.save()
             return user
 
+Please keep in mind that, if the field has already been explicitly declared on the serializer class, then the `extra_kwargs` option will be ignored.
+
 ## Relational fields
 
 When serializing model instances, there are a number of different ways you might choose to represent relationships.  The default representation for `ModelSerializer` is to use the primary keys of the related instances.
@@ -624,7 +626,7 @@ The default implementation returns a serializer class based on the `serializer_f
 
 Called to generate a serializer field that maps to a relational model field.
 
-The default implementation returns a serializer class based on the `serializer_relational_field` attribute.
+The default implementation returns a serializer class based on the `serializer_related_field` attribute.
 
 The `relation_info` argument is a named tuple, that contains `model_field`, `related_model`, `to_many` and `has_through_model` properties.
 
@@ -963,7 +965,7 @@ The following class is an example of a generic serializer that can handle coerci
         def to_representation(self, obj):
             for attribute_name in dir(obj):
                 attribute = getattr(obj, attribute_name)
-                if attribute_name('_'):
+                if attribute_name.startswith('_'):
                     # Ignore private attributes.
                     pass
                 elif hasattr(attribute, '__call__'):
@@ -1094,10 +1096,10 @@ This would then allow you to do the following:
     >>>         model = User
     >>>         fields = ('id', 'username', 'email')
     >>>
-    >>> print UserSerializer(user)
+    >>> print(UserSerializer(user))
     {'id': 2, 'username': 'jonwatts', 'email': 'jon@example.com'}
     >>>
-    >>> print UserSerializer(user, fields=('id', 'email'))
+    >>> print(UserSerializer(user, fields=('id', 'email')))
     {'id': 2, 'email': 'jon@example.com'}
 
 ## Customizing the default fields
diff --git a/docs/api-guide/testing.md b/docs/api-guide/testing.md
index a6ecc7557..5ca01b4e7 100644
--- a/docs/api-guide/testing.md
+++ b/docs/api-guide/testing.md
@@ -119,7 +119,7 @@ Extends [Django's existing `Client` class][client].
 
 ## Making requests
 
-The `APIClient` class supports the same request interface as Django's standard `Client` class.  This means the that standard `.get()`, `.post()`, `.put()`, `.patch()`, `.delete()`, `.head()` and `.options()` methods are all available.  For example:
+The `APIClient` class supports the same request interface as Django's standard `Client` class.  This means that the standard `.get()`, `.post()`, `.put()`, `.patch()`, `.delete()`, `.head()` and `.options()` methods are all available.  For example:
 
     from rest_framework.test import APIClient
 
@@ -209,7 +209,7 @@ directly.
 
 Note that the requests client requires you to pass fully qualified URLs.
 
-## `RequestsClient` and working with the database
+## RequestsClient and working with the database
 
 The `RequestsClient` class is useful if you want to write tests that solely interact with the service interface. This is a little stricter than using the standard Django test client, as it means that all interactions should be via the API.
 
diff --git a/docs/api-guide/throttling.md b/docs/api-guide/throttling.md
index de66396a8..dade47460 100644
--- a/docs/api-guide/throttling.md
+++ b/docs/api-guide/throttling.md
@@ -82,8 +82,10 @@ The throttle classes provided by REST framework use Django's cache backend.  You
 
 If you need to use a cache other than `'default'`, you can do so by creating a custom throttle class and setting the `cache` attribute.  For example:
 
+    from django.core.cache import caches
+
     class CustomAnonRateThrottle(AnonRateThrottle):
-        cache = get_cache('alternate')
+        cache = caches['alternate']
 
 You'll need to remember to also set your custom throttle class in the `'DEFAULT_THROTTLE_CLASSES'` settings key, or using the `throttle_classes` view attribute.
 
diff --git a/docs/api-guide/validators.md b/docs/api-guide/validators.md
index 925f67206..9b2fc82ed 100644
--- a/docs/api-guide/validators.md
+++ b/docs/api-guide/validators.md
@@ -100,7 +100,7 @@ The validator should be applied to *serializer classes*, like so:
 
 ---
 
-**Note**: The `UniqueTogetherValidation` class always imposes an implicit constraint that all the fields it applies to are always treated as required. Fields with `default` values are an exception to this as they always supply a value even when omitted from user input.
+**Note**: The `UniqueTogetherValidator` class always imposes an implicit constraint that all the fields it applies to are always treated as required. Fields with `default` values are an exception to this as they always supply a value even when omitted from user input.
 
 ---
 
@@ -159,7 +159,7 @@ If you want the date field to be entirely hidden from the user, then use `Hidden
 
 ---
 
-**Note**: The `UniqueFor<Range>Validation` classes impose an implicit constraint that the fields they are applied to are always treated as required. Fields with `default` values are an exception to this as they always supply a value even when omitted from user input.
+**Note**: The `UniqueFor<Range>Validator` classes impose an implicit constraint that the fields they are applied to are always treated as required. Fields with `default` values are an exception to this as they always supply a value even when omitted from user input.
 
 ---
 
@@ -275,7 +275,7 @@ A validator may be any callable that raises a `serializers.ValidationError` on f
 
 You can specify custom field-level validation by adding `.validate_<field_name>` methods
 to your `Serializer` subclass. This is documented in the
-[Serializer docs](http://www.django-rest-framework.org/api-guide/serializers/#field-level-validation)
+[Serializer docs](https://www.django-rest-framework.org/api-guide/serializers/#field-level-validation)
 
 ## Class-based
 
diff --git a/docs/api-guide/viewsets.md b/docs/api-guide/viewsets.md
index d98f518b3..e7cf4d48f 100644
--- a/docs/api-guide/viewsets.md
+++ b/docs/api-guide/viewsets.md
@@ -127,7 +127,7 @@ You may inspect these attributes to adjust behaviour based on the current action
 
 ## Marking extra actions for routing
 
-If you have ad-hoc methods that should be routable, you can mark them as such with the `@action` decorator. Like regular actions, extra actions may be intended for either a list of objects, or a single instance. To indicate this, set the `detail` argument to `True` or `False`. The router will configure its URL patterns accordingly. e.g., the `DefaultRouter` will configure detail actions to contain `pk` in their URL patterns.
+If you have ad-hoc methods that should be routable, you can mark them as such with the `@action` decorator. Like regular actions, extra actions may be intended for either a single object, or an entire collection. To indicate this, set the `detail` argument to `True` or `False`. The router will configure its URL patterns accordingly. e.g., the `DefaultRouter` will configure detail actions to contain `pk` in their URL patterns.
 
 A more complete example of extra actions:
 
@@ -158,7 +158,7 @@ A more complete example of extra actions:
 
         @action(detail=False)
         def recent_users(self, request):
-            recent_users = User.objects.all().order('-last_login')
+            recent_users = User.objects.all().order_by('-last_login')
 
             page = self.paginate_queryset(recent_users)
             if page is not None:
@@ -174,7 +174,7 @@ The decorator can additionally take extra arguments that will be set for the rou
         def set_password(self, request, pk=None):
            ...
 
-These decorator will route `GET` requests by default, but may also accept other HTTP methods by setting the `methods` argument.  For example:
+The `action` decorator will route `GET` requests by default, but may also accept other HTTP methods by setting the `methods` argument.  For example:
 
         @action(detail=True, methods=['post', 'delete'])
         def unset_password(self, request, pk=None):
@@ -186,7 +186,7 @@ To view all extra actions, call the `.get_extra_actions()` method.
 
 ### Routing additional HTTP methods for extra actions
 
-Extra actions can be mapped to different `ViewSet` methods. For example, the above password set/unset methods could be consolidated into a single route. Note that additional mappings do not accept arguments.
+Extra actions can map additional HTTP methods to separate `ViewSet` methods. For example, the above password set/unset methods could be consolidated into a single route. Note that additional mappings do not accept arguments.
 
 ```python
     @action(detail=True, methods=['put'], name='Change Password')
@@ -314,5 +314,5 @@ To create a base viewset class that provides `create`, `list` and `retrieve` ope
 
 By creating your own base `ViewSet` classes, you can provide common behavior that can be reused in multiple viewsets across your API.
 
-[cite]: http://guides.rubyonrails.org/routing.html
+[cite]: https://guides.rubyonrails.org/routing.html
 [routers]: routers.md
diff --git a/docs/community/3.0-announcement.md b/docs/community/3.0-announcement.md
index 66a035380..7a29b5554 100644
--- a/docs/community/3.0-announcement.md
+++ b/docs/community/3.0-announcement.md
@@ -389,7 +389,7 @@ You can include `expiry_date` as a field option on a `ModelSerializer` class.
 These fields will be mapped to `serializers.ReadOnlyField()` instances.
 
     >>> serializer = InvitationSerializer()
-    >>> print repr(serializer)
+    >>> print(repr(serializer))
     InvitationSerializer():
         to_email = EmailField(max_length=75)
         message = CharField(max_length=1000)
@@ -523,7 +523,7 @@ The following class is an example of a generic serializer that can handle coerci
         def to_representation(self, obj):
             for attribute_name in dir(obj):
                 attribute = getattr(obj, attribute_name)
-                if attribute_name('_'):
+                if attribute_name.startswith('_'):
                     # Ignore private attributes.
                     pass
                 elif hasattr(attribute, '__call__'):
@@ -960,6 +960,6 @@ The 3.2 release is planned to introduce an alternative admin-style interface to
 You can follow development on the GitHub site, where we use [milestones to indicate planning timescales](https://github.com/encode/django-rest-framework/milestones).
 
 [kickstarter]: https://www.kickstarter.com/projects/tomchristie/django-rest-framework-3
-[sponsors]: http://www.django-rest-framework.org/topics/kickstarter-announcement/#sponsors
+[sponsors]: https://www.django-rest-framework.org/community/kickstarter-announcement/#sponsors
 [mixins.py]: https://github.com/encode/django-rest-framework/blob/master/rest_framework/mixins.py
 [django-localization]: https://docs.djangoproject.com/en/stable/topics/i18n/translation/#localization-how-to-create-language-files
diff --git a/docs/community/3.1-announcement.md b/docs/community/3.1-announcement.md
index 0a2c40c9e..2213c379d 100644
--- a/docs/community/3.1-announcement.md
+++ b/docs/community/3.1-announcement.md
@@ -30,7 +30,7 @@ Note that as a result of this work a number of settings keys and generic view at
 
 Until now, there has only been a single built-in pagination style in REST framework. We now have page, limit/offset and cursor based schemes included by default.
 
-The cursor based pagination scheme is particularly smart, and is a better approach for clients iterating through large or frequently changing result sets. The scheme supports paging against non-unique indexes, by using both cursor and limit/offset information. It also allows for both forward and reverse cursor pagination. Much credit goes to David Cramer for [this blog post](http://cramer.io/2011/03/08/building-cursors-for-the-disqus-api) on the subject.
+The cursor based pagination scheme is particularly smart, and is a better approach for clients iterating through large or frequently changing result sets. The scheme supports paging against non-unique indexes, by using both cursor and limit/offset information. It also allows for both forward and reverse cursor pagination. Much credit goes to David Cramer for [this blog post](https://cra.mr/2011/03/08/building-cursors-for-the-disqus-api) on the subject.
 
 #### Pagination controls in the browsable API.
 
@@ -114,7 +114,7 @@ Note that the structure of the error responses is still the same. We still have
 
 We include built-in translations both for standard exception cases, and for serializer validation errors.
 
-The full list of supported languages can be found on our [Transifex project page](https://www.transifex.com/projects/p/django-rest-framework/).
+The full list of supported languages can be found on our [Transifex project page](https://www.transifex.com/django-rest-framework-1/django-rest-framework/).
 
 If you only wish to support a subset of the supported languages, use Django's standard `LANGUAGES` setting:
 
@@ -155,14 +155,14 @@ We've now moved a number of packages out of the core of REST framework, and into
 
 We're making this change in order to help distribute the maintenance workload, and keep better focus of the core essentials of the framework.
 
-The change also means we can be more flexible with which external packages we recommend. For example, the excellently maintained [Django OAuth toolkit](https://github.com/evonove/django-oauth-toolkit) has now been promoted as our recommended option for integrating OAuth support.
+The change also means we can be more flexible with which external packages we recommend. For example, the excellently maintained [Django OAuth toolkit](https://github.com/jazzband/django-oauth-toolkit) has now been promoted as our recommended option for integrating OAuth support.
 
 The following packages are now moved out of core and should be separately installed:
 
 * OAuth - [djangorestframework-oauth](https://jpadilla.github.io/django-rest-framework-oauth/)
-* XML - [djangorestframework-xml](https://jpadilla.github.io/django-rest-framework-xml)
-* YAML - [djangorestframework-yaml](https://jpadilla.github.io/django-rest-framework-yaml)
-* JSONP - [djangorestframework-jsonp](https://jpadilla.github.io/django-rest-framework-jsonp)
+* XML - [djangorestframework-xml](https://jpadilla.github.io/django-rest-framework-xml/)
+* YAML - [djangorestframework-yaml](https://jpadilla.github.io/django-rest-framework-yaml/)
+* JSONP - [djangorestframework-jsonp](https://jpadilla.github.io/django-rest-framework-jsonp/)
 
 It's worth reiterating that this change in policy shouldn't mean any work in your codebase other than adding a new requirement and modifying some import paths. For example to install XML rendering, you would now do:
 
diff --git a/docs/community/3.2-announcement.md b/docs/community/3.2-announcement.md
index c022231a0..a66ad5d29 100644
--- a/docs/community/3.2-announcement.md
+++ b/docs/community/3.2-announcement.md
@@ -10,7 +10,7 @@ We've also fixed a huge number of issues, and made numerous cleanups and improve
 
 Over the course of the 3.1.x series we've [resolved nearly 600 tickets](https://github.com/encode/django-rest-framework/issues?utf8=%E2%9C%93&q=closed%3A%3E2015-03-05) on our GitHub issue tracker. This means we're currently running at a rate of **closing around 100 issues or pull requests per month**.
 
-None of this would have been possible without the support of our wonderful Kickstarter backers. If you're looking for a job in Django development we'd strongly recommend taking [a look through our sponsors](http://www.django-rest-framework.org/topics/kickstarter-announcement/#sponsors) and finding out who's hiring.
+None of this would have been possible without the support of our wonderful Kickstarter backers. If you're looking for a job in Django development we'd strongly recommend taking [a look through our sponsors](https://www.django-rest-framework.org/community/kickstarter-announcement/#sponsors) and finding out who's hiring.
 
 ## AdminRenderer
 
diff --git a/docs/community/3.4-announcement.md b/docs/community/3.4-announcement.md
index 73ec3f2a2..67192ecbb 100644
--- a/docs/community/3.4-announcement.md
+++ b/docs/community/3.4-announcement.md
@@ -36,13 +36,13 @@ Right now we're over 60% of the way towards achieving that.
 *Every single sign-up makes a significant impact.*
 
 <ul class="premium-promo promo">
-    <li><a href="http://jobs.rover.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
-    <li><a href="https://getsentry.com/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
+    <li><a href="https://www.rover.com/careers/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
+    <li><a href="https://sentry.io/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
     <li><a href="https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/stream-130.png)">Stream</a></li>
 </ul>
 <div style="clear: both; padding-bottom: 20px;"></div>
 
-*Many thanks to all our [awesome sponsors][sponsors], and in particular to our premium backers, [Rover](http://jobs.rover.com/), [Sentry](https://getsentry.com/welcome/), and [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf).*
+*Many thanks to all our [awesome sponsors][sponsors], and in particular to our premium backers, [Rover](https://www.rover.com/careers/), [Sentry](https://sentry.io/welcome/), and [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf).*
 
 ---
 
@@ -178,12 +178,12 @@ The full set of itemized release notes [are available here][release-notes].
 [sponsors]: https://fund.django-rest-framework.org/topics/funding/#our-sponsors
 [moss]: mozilla-grant.md
 [funding]: funding.md
-[core-api]: http://www.coreapi.org/
+[core-api]: https://www.coreapi.org/
 [command-line-client]: api-clients#command-line-client
 [client-library]: api-clients#python-client-library
-[core-json]: http://www.coreapi.org/specification/encoding/#core-json-encoding
+[core-json]: https://www.coreapi.org/specification/encoding/#core-json-encoding
 [swagger]: https://openapis.org/specification
-[hyperschema]: http://json-schema.org/latest/json-schema-hypermedia.html
+[hyperschema]: https://json-schema.org/latest/json-schema-hypermedia.html
 [api-blueprint]: https://apiblueprint.org/
 [tut-7]: ../tutorial/7-schemas-and-client-libraries/
 [schema-generation]: ../api-guide/schemas/
diff --git a/docs/community/3.5-announcement.md b/docs/community/3.5-announcement.md
index dca371b84..cce2dd050 100644
--- a/docs/community/3.5-announcement.md
+++ b/docs/community/3.5-announcement.md
@@ -32,14 +32,14 @@ we strongly encourage you to invest in its continued development by
 **[signing up for a paid&nbsp;plan][funding]**.
 
 <ul class="premium-promo promo">
-    <li><a href="http://jobs.rover.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
-    <li><a href="https://getsentry.com/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
+    <li><a href="https://www.rover.com/careers/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
+    <li><a href="https://sentry.io/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
     <li><a href="https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/stream-130.png)">Stream</a></li>
     <li><a href="https://www.machinalis.com/#services" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/Machinalis130.png)">Machinalis</a></li>
 </ul>
 <div style="clear: both; padding-bottom: 20px;"></div>
 
-*Many thanks to all our [sponsors][sponsors], and in particular to our premium backers, [Rover](http://jobs.rover.com/), [Sentry](https://getsentry.com/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), and [Machinalis](https://www.machinalis.com/#services).*
+*Many thanks to all our [sponsors][sponsors], and in particular to our premium backers, [Rover](https://www.rover.com/careers/), [Sentry](https://sentry.io/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), and [Machinalis](https://www.machinalis.com/#services).*
 
 ---
 
diff --git a/docs/community/3.6-announcement.md b/docs/community/3.6-announcement.md
index 04e6a6669..c6e8dfa06 100644
--- a/docs/community/3.6-announcement.md
+++ b/docs/community/3.6-announcement.md
@@ -39,16 +39,16 @@ we strongly encourage you to invest in its continued development by
 **[signing up for a paid&nbsp;plan][funding]**.
 
 <ul class="premium-promo promo">
-    <li><a href="http://jobs.rover.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
-    <li><a href="https://getsentry.com/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
+    <li><a href="https://www.rover.com/careers/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
+    <li><a href="https://sentry.io/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
     <li><a href="https://getstream.io/try-the-api/?utm_source=drf&utm_medium=banner&utm_campaign=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/stream-130.png)">Stream</a></li>
-    <li><a href="https://hello.machinalis.co.uk/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/Machinalis130.png)">Machinalis</a></li>
+    <li><a href="https://machinalis.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/Machinalis130.png)">Machinalis</a></li>
     <li><a href="https://rollbar.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rollbar.png)">Rollbar</a></li>
     <li><a href="https://micropyramid.com/django-rest-framework-development-services/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/mp-text-logo.png)">MicroPyramid</a></li>
 </ul>
 <div style="clear: both; padding-bottom: 20px;"></div>
 
-*Many thanks to all our [sponsors][sponsors], and in particular to our premium backers, [Rover](http://jobs.rover.com/), [Sentry](https://getsentry.com/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://hello.machinalis.co.uk/), [Rollbar](https://rollbar.com), and [MicroPyramid](https://micropyramid.com/django-rest-framework-development-services/).*
+*Many thanks to all our [sponsors][sponsors], and in particular to our premium backers, [Rover](https://www.rover.com/careers/), [Sentry](https://sentry.io/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://machinalis.com/), [Rollbar](https://rollbar.com), and [MicroPyramid](https://micropyramid.com/django-rest-framework-development-services/).*
 
 ---
 
diff --git a/docs/community/3.7-announcement.md b/docs/community/3.7-announcement.md
index a916f67b4..d1a39fa60 100644
--- a/docs/community/3.7-announcement.md
+++ b/docs/community/3.7-announcement.md
@@ -33,15 +33,15 @@ If you use REST framework commercially and would like to see this work continue,
 **[signing up for a paid&nbsp;plan][funding]**.
 
 <ul class="premium-promo promo">
-    <li><a href="http://jobs.rover.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
-    <li><a href="https://getsentry.com/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
+    <li><a href="https://www.rover.com/careers/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
+    <li><a href="https://sentry.io/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
     <li><a href="https://getstream.io/try-the-api/?utm_source=drf&utm_medium=banner&utm_campaign=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/stream-130.png)">Stream</a></li>
-    <li><a href="https://hello.machinalis.co.uk/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/Machinalis130.png)">Machinalis</a></li>
+    <li><a href="https://machinalis.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/Machinalis130.png)">Machinalis</a></li>
     <li><a href="https://rollbar.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rollbar.png)">Rollbar</a></li>
 </ul>
 <div style="clear: both; padding-bottom: 20px;"></div>
 
-*As well as our release sponsor, we'd like to say thanks in particular our premium backers, [Rover](http://jobs.rover.com/), [Sentry](https://getsentry.com/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://hello.machinalis.co.uk/), and [Rollbar](https://rollbar.com).*
+*As well as our release sponsor, we'd like to say thanks in particular our premium backers, [Rover](https://www.rover.com/careers/), [Sentry](https://sentry.io/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://machinalis.com/), and [Rollbar](https://rollbar.com).*
 
 ---
 
diff --git a/docs/community/3.8-announcement.md b/docs/community/3.8-announcement.md
index 1671bcd89..507299782 100644
--- a/docs/community/3.8-announcement.md
+++ b/docs/community/3.8-announcement.md
@@ -30,7 +30,7 @@ If you use REST framework commercially and would like to see this work continue,
 **[signing up for a paid&nbsp;plan][funding]**.
 
 
-*We'd like to say thanks in particular our premium backers, [Rover](http://jobs.rover.com/), [Sentry](https://getsentry.com/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://hello.machinalis.co.uk/), and [Rollbar](https://rollbar.com).*
+*We'd like to say thanks in particular our premium backers, [Rover](https://www.rover.com/careers/), [Sentry](https://sentry.io/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://machinalis.com/), and [Rollbar](https://rollbar.com).*
 
 ---
 
diff --git a/docs/community/3.9-announcement.md b/docs/community/3.9-announcement.md
new file mode 100644
index 000000000..1cf4464d6
--- /dev/null
+++ b/docs/community/3.9-announcement.md
@@ -0,0 +1,212 @@
+<style>
+.promo li a {
+    float: left;
+    width: 130px;
+    height: 20px;
+    text-align: center;
+    margin: 10px 30px;
+    padding: 150px 0 0 0;
+    background-position: 0 50%;
+    background-size: 130px auto;
+    background-repeat: no-repeat;
+    font-size: 120%;
+    color: black;
+}
+.promo li {
+    list-style: none;
+}
+</style>
+
+# Django REST framework 3.9
+
+The 3.9 release gives access to _extra actions_ in the Browsable API, introduces composable permissions and built-in [OpenAPI][openapi] schema support. (Formerly known as Swagger)
+
+---
+
+## Funding
+
+If you use REST framework commercially and would like to see this work continue, we strongly encourage you to invest in its continued development by
+**[signing up for a paid&nbsp;plan][funding]**.
+
+
+<ul class="premium-promo promo">
+    <li><a href="https://www.rover.com/careers/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
+    <li><a href="https://sentry.io/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
+    <li><a href="https://getstream.io/try-the-api/?utm_source=drf&utm_medium=banner&utm_campaign=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/stream-130.png)">Stream</a></li>
+    <li><a href="https://auklet.io" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/auklet-new.png)">Auklet</a></li>
+    <li><a href="https://rollbar.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rollbar2.png)">Rollbar</a></li>
+    <li><a href="https://cadre.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/cadre.png)">Cadre</a></li>
+    <li><a href="https://loadimpact.com/?utm_campaign=Sponsorship%20links&utm_source=drf&utm_medium=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/load-impact.png)">Load Impact</a></li>
+    <li><a href="https://hubs.ly/H0f30Lf0" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/kloudless.png)">Kloudless</a></li>
+</ul>
+<div style="clear: both; padding-bottom: 20px;"></div>
+
+*Many thanks to all our [wonderful sponsors][sponsors], and in particular to our premium backers, [Rover](https://www.rover.com/careers/), [Sentry](https://sentry.io/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Auklet](https://auklet.io/), [Rollbar](https://rollbar.com), [Cadre](https://cadre.com), [Load Impact](https://loadimpact.com/?utm_campaign=Sponsorship%20links&utm_source=drf&utm_medium=drf), and [Kloudless](https://hubs.ly/H0f30Lf0).*
+
+---
+
+## Built-in OpenAPI schema support
+
+REST framework now has a first-pass at directly including OpenAPI schema support. (Formerly known as Swagger)
+
+Specifically:
+
+* There are now `OpenAPIRenderer`, and `JSONOpenAPIRenderer` classes that deal with encoding `coreapi.Document` instances into OpenAPI YAML or OpenAPI JSON.
+* The `get_schema_view(...)` method now defaults to OpenAPI YAML, with CoreJSON as a secondary
+option if it is selected via HTTP content negotiation.
+* There is a new management command `generateschema`, which you can use to dump
+the schema into your repository.
+
+Here's an example of adding an OpenAPI schema to the URL conf:
+
+```python
+from rest_framework.schemas import get_schema_view
+from rest_framework.renderers import JSONOpenAPIRenderer
+
+schema_view = get_schema_view(
+    title='Server Monitoring API',
+    url='https://www.example.org/api/',
+    renderer_classes=[JSONOpenAPIRenderer]
+)
+
+urlpatterns = [
+    url('^schema.json$', schema_view),
+    ...
+]
+```
+
+And here's how you can use the `generateschema` management command:
+
+```shell
+$ python manage.py generateschema --format openapi > schema.yml
+```
+
+There's lots of different tooling that you can use for working with OpenAPI
+schemas. One option that we're working on is the [API Star](https://docs.apistar.com/)
+command line tool.
+
+You can use `apistar` to validate your API schema:
+
+```shell
+$ apistar validate --path schema.json --format openapi
+✓ Valid OpenAPI schema.
+```
+
+Or to build API documentation:
+
+```shell
+$ apistar docs --path schema.json --format openapi
+✓ Documentation built at "build/index.html".
+```
+
+API Star also includes a [dynamic client library](https://docs.apistar.com/client-library/)
+that uses an API schema to automatically provide a client library interface for making requests.
+
+## Composable permission classes
+
+You can now compose permission classes using the and/or operators, `&` and `|`.
+
+For example...
+
+```python
+permission_classes = [IsAuthenticated & (ReadOnly | IsAdmin)]
+```
+
+If you're using custom permission classes then make sure that you are subclassing
+from `BasePermission` in order to enable this support.
+
+## ViewSet _Extra Actions_ available in the Browsable API
+
+Following the introduction of the `action` decorator in v3.8, _extra actions_ defined on a ViewSet are now available
+from the Browsable API.
+
+![Extra Actions displayed in the Browsable API](https://user-images.githubusercontent.com/2370209/32976956-1ca9ab7e-cbf1-11e7-981a-a20cb1e83d63.png)
+
+When defined, a dropdown of "Extra Actions", appropriately filtered to detail/non-detail actions, is displayed.
+
+---
+
+## Supported Versions
+
+REST framework 3.9 supports Django versions 1.11, 2.0, and 2.1.
+
+---
+
+## Deprecations
+
+### `DjangoObjectPermissionsFilter` moved to third-party package.
+
+The `DjangoObjectPermissionsFilter` class is pending deprecation, will be deprecated in 3.10 and removed entirely in 3.11.
+
+It has been moved to the third-party [`djangorestframework-guardian`](https://github.com/rpkilby/django-rest-framework-guardian)
+package. Please use this instead.
+
+### Router argument/method renamed to use `basename` for consistency.
+
+* The `Router.register` `base_name` argument has been renamed in favor of `basename`.
+* The `Router.get_default_base_name` method has been renamed in favor of `Router.get_default_basename`. [#5990][gh5990]
+
+See [#5990][gh5990].
+
+[gh5990]: https://github.com/encode/django-rest-framework/pull/5990
+
+`base_name` and `get_default_base_name()` are pending deprecation. They will be deprecated in 3.10 and removed entirely in 3.11.
+
+### `action` decorator replaces `list_route` and `detail_route`
+
+Both `list_route` and `detail_route` are now deprecated in favour of the single `action` decorator.
+They will be removed entirely in 3.10.
+
+The `action` decorator takes a boolean `detail` argument.
+
+* Replace `detail_route` uses with `@action(detail=True)`.
+* Replace `list_route` uses with `@action(detail=False)`.
+
+### `exclude_from_schema`
+
+Both `APIView.exclude_from_schema` and the `exclude_from_schema` argument to the `@api_view` have now been removed.
+
+For `APIView` you should instead set a `schema = None` attribute on the view class.
+
+For function-based views the `@schema` decorator can be used to exclude the view from the schema, by using `@schema(None)`.
+
+---
+
+## Minor fixes and improvements
+
+There are a large number of minor fixes and improvements in this release. See the [release notes](release-notes.md) page for a complete listing.
+
+
+## What's next
+
+We're planning to iteratively work towards OpenAPI becoming the standard schema
+representation. This will mean that the `coreapi` dependency will gradually become
+removed, and we'll instead generate the schema directly, rather than building
+a CoreAPI `Document` object.
+
+OpenAPI has clearly become the standard for specifying Web APIs, so there's not
+much value any more in our schema-agnostic document model. Making this change
+will mean that we'll more easily be able to take advantage of the full set of
+OpenAPI functionality.
+
+This will also make a wider range of tooling available.
+
+We'll focus on continuing to develop the [API Star](https://docs.apistar.com/)
+library and client tool into a recommended option for generating API docs,
+validating API schemas, and providing a dynamic client library.
+
+There's also a huge amount of ongoing work on maturing the ASGI landscape,
+with the possibility that some of this work will eventually [feed back into
+Django](https://www.aeracode.org/2018/06/04/django-async-roadmap/).
+
+There will be further work on the [Uvicorn](https://www.uvicorn.org/)
+web server, as well as lots of functionality planned for the [Starlette](https://www.starlette.io/)
+web framework, which is building a foundational set of tooling for working with
+ASGI.
+
+
+[funding]: funding.md
+[gh5886]: https://github.com/encode/django-rest-framework/issues/5886
+[gh5705]: https://github.com/encode/django-rest-framework/issues/5705
+[openapi]: https://www.openapis.org/
+[sponsors]: https://fund.django-rest-framework.org/topics/funding/#our-sponsors
diff --git a/docs/community/contributing.md b/docs/community/contributing.md
index 9cc6ccee0..cb67100d2 100644
--- a/docs/community/contributing.md
+++ b/docs/community/contributing.md
@@ -65,7 +65,7 @@ Changes should broadly follow the [PEP 8][pep-8] style conventions, and we recom
 To run the tests, clone the repository, and then:
 
     # Setup the virtual environment
-    virtualenv env
+    python3 -m venv env
     source env/bin/activate
     pip install django
     pip install -r requirements.txt
@@ -121,7 +121,7 @@ It's also useful to remember that if you have an outstanding pull request then p
 
 GitHub's documentation for working on pull requests is [available here][pull-requests].
 
-Always run the tests before submitting pull requests, and ideally run `tox` in order to check that your modifications are compatible with both Python 2 and Python 3, and that they run properly on all supported versions of Django.
+Always run the tests before submitting pull requests, and ideally run `tox` in order to check that your modifications are compatible on all supported versions of Python and Django.
 
 Once you've made a pull request take a look at the Travis build status in the GitHub interface and make sure the tests are running as you'd expect.
 
diff --git a/docs/community/funding.md b/docs/community/funding.md
index 0faf2164b..662e3d5d9 100644
--- a/docs/community/funding.md
+++ b/docs/community/funding.md
@@ -123,10 +123,10 @@ REST framework continues to be open-source and permissively licensed, but we fir
 
 ## What funding has enabled so far
 
-* The [3.4](http://www.django-rest-framework.org/topics/3.4-announcement/) and [3.5](http://www.django-rest-framework.org/topics/3.5-announcement/) releases, including schema generation for both Swagger and RAML, a Python client library, a Command Line client, and addressing of a large number of outstanding issues.
-* The [3.6](http://www.django-rest-framework.org/topics/3.6-announcement/) release, including  JavaScript client library, and API documentation, complete with auto-generated code samples.
-* The [3.7 release](http://www.django-rest-framework.org/topics/3.7-announcement/), made possible due to our collaborative funding model, focuses on improvements to schema generation and the interactive API documentation.
-* The recent [3.8 release](http://www.django-rest-framework.org/topics/3.8-announcement/).
+* The [3.4](https://www.django-rest-framework.org/community/3.4-announcement/) and [3.5](https://www.django-rest-framework.org/community/3.5-announcement/) releases, including schema generation for both Swagger and RAML, a Python client library, a Command Line client, and addressing of a large number of outstanding issues.
+* The [3.6](https://www.django-rest-framework.org/community/3.6-announcement/) release, including  JavaScript client library, and API documentation, complete with auto-generated code samples.
+* The [3.7 release](https://www.django-rest-framework.org/community/3.7-announcement/), made possible due to our collaborative funding model, focuses on improvements to schema generation and the interactive API documentation.
+* The recent [3.8 release](https://www.django-rest-framework.org/community/3.8-announcement/).
 * Tom Christie, the creator of Django REST framework, working on the project full-time.
 * Around 80-90 issues and pull requests closed per month since Tom Christie started working on the project full-time.
 * A community & operations manager position part-time for 4 months, helping mature the business and grow sponsorship.
@@ -341,7 +341,7 @@ For further enquires please contact <a href=mailto:funding@django-rest-framework
 
 ## Accountability
 
-In an effort to keep the project as transparent as possible, we are releasing [monthly progress reports](http://www.encode.io/reports/march-2018) and regularly include financial reports and cost breakdowns.
+In an effort to keep the project as transparent as possible, we are releasing [monthly progress reports](https://www.encode.io/reports/march-2018/) and regularly include financial reports and cost breakdowns.
 
 <!-- Begin MailChimp Signup Form -->
 <link href="//cdn-images.mailchimp.com/embedcode/classic-10_7.css" rel="stylesheet" type="text/css">
diff --git a/docs/community/jobs.md b/docs/community/jobs.md
index 4372fa54f..e74b78c7f 100644
--- a/docs/community/jobs.md
+++ b/docs/community/jobs.md
@@ -9,14 +9,12 @@ Looking for a new Django REST Framework related role? On this site we provide a
 * [https://www.python.org/jobs/][python-org-jobs]
 * [https://djangogigs.com][django-gigs-com]
 * [https://djangojobs.net/jobs/][django-jobs-net]
-* [http://djangojobbers.com][django-jobbers-com]
 * [https://www.indeed.com/q-Django-jobs.html][indeed-com]
 * [https://stackoverflow.com/jobs/developer-jobs-using-django][stackoverflow-com]
 * [https://www.upwork.com/o/jobs/browse/skill/django-framework/][upwork-com]
 * [https://www.technojobs.co.uk/django-jobs][technobjobs-co-uk]
 * [https://remoteok.io/remote-django-jobs][remoteok-io]
 * [https://www.remotepython.com/jobs/][remotepython-com]
-* [https://weworkcontract.com/python-contract-jobs][weworkcontract-com]
 
 
 Know of any other great resources for Django REST Framework jobs that are missing in our list? Please [submit a pull request][submit-pr] or [email us][anna-email].
@@ -28,14 +26,12 @@ Wonder how else you can help? One of the best ways you can help Django REST Fram
 [python-org-jobs]: https://www.python.org/jobs/
 [django-gigs-com]: https://djangogigs.com
 [django-jobs-net]: https://djangojobs.net/jobs/
-[django-jobbers-com]: http://djangojobbers.com
 [indeed-com]: https://www.indeed.com/q-Django-jobs.html
 [stackoverflow-com]: https://stackoverflow.com/jobs/developer-jobs-using-django
 [upwork-com]: https://www.upwork.com/o/jobs/browse/skill/django-framework/
 [technobjobs-co-uk]: https://www.technojobs.co.uk/django-jobs
 [remoteok-io]: https://remoteok.io/remote-django-jobs
 [remotepython-com]: https://www.remotepython.com/jobs/
-[weworkcontract-com]: https://weworkcontract.com/python-contract-jobs
 [drf-funding]: https://fund.django-rest-framework.org/topics/funding/
 [submit-pr]: https://github.com/encode/django-rest-framework
 [anna-email]: mailto:anna@django-rest-framework.org
diff --git a/docs/community/kickstarter-announcement.md b/docs/community/kickstarter-announcement.md
index e2a283e29..27e77ceb5 100644
--- a/docs/community/kickstarter-announcement.md
+++ b/docs/community/kickstarter-announcement.md
@@ -47,8 +47,8 @@ Our platinum sponsors have each made a hugely substantial contribution to the fu
 </ul>
 
 <ul class="sponsor platinum">
-<li><a href="https://www.divio.ch/" rel="nofollow" style="background-image:url(../../img/sponsors/1-divio.png);">Divio</a></li>
-<li><a href="http://company.onlulu.com/en/" rel="nofollow" style="background-image:url(../../img/sponsors/1-lulu.png);">Lulu</a></li>
+<li><a href="https://www.divio.com/" rel="nofollow" style="background-image:url(../../img/sponsors/1-divio.png);">Divio</a></li>
+<li><a href="https://onlulu.com" rel="nofollow" style="background-image:url(../../img/sponsors/1-lulu.png);">Lulu</a></li>
 <li><a href="https://p.ota.to/" rel="nofollow" style="background-image:url(../../img/sponsors/1-potato.png);">Potato</a></li>
 <li><a href="http://www.wiredrive.com/" rel="nofollow" style="background-image:url(../../img/sponsors/1-wiredrive.png);">Wiredrive</a></li>
 <li><a href="http://www.cyaninc.com/" rel="nofollow" style="background-image:url(../../img/sponsors/1-cyan.png);">Cyan</a></li>
@@ -78,11 +78,11 @@ Our gold sponsors include companies large and small. Many thanks for their signi
 <li><a href="https://mirusresearch.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-mirus_research.png);">Mirus Research</a></li>
 <li><a href="https://hipolabs.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-hipo.png);">Hipo</a></li>
 <li><a href="https://www.byte.nl/" rel="nofollow" style="background-image:url(../../img/sponsors/2-byte.png);">Byte</a></li>
-<li><a href="http://lightningkite.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-lightning_kite.png);">Lightning Kite</a></li>
+<li><a href="https://www.lightningkite.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-lightning_kite.png);">Lightning Kite</a></li>
 <li><a href="https://opbeat.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-opbeat.png);">Opbeat</a></li>
 <li><a href="https://koordinates.com" rel="nofollow" style="background-image:url(../../img/sponsors/2-koordinates.png);">Koordinates</a></li>
-<li><a href="http://pulsecode.ca" rel="nofollow" style="background-image:url(../../img/sponsors/2-pulsecode.png);">Pulsecode Inc.</a></li>
-<li><a href="http://singinghorsestudio.com" rel="nofollow" style="background-image:url(../../img/sponsors/2-singing-horse.png);">Singing Horse Studio Ltd.</a></li>
+<li><a rel="nofollow" style="background-image:url(../../img/sponsors/2-pulsecode.png);">Pulsecode Inc.</a></li>
+<li><a rel="nofollow" style="background-image:url(../../img/sponsors/2-singing-horse.png);">Singing Horse Studio Ltd.</a></li>
 <li><a href="https://www.heroku.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-heroku.png);">Heroku</a></li>
 <li><a href="https://www.rheinwerk-verlag.de/" rel="nofollow" style="background-image:url(../../img/sponsors/2-rheinwerk_verlag.png);">Rheinwerk Verlag</a></li>
 <li><a href="https://www.securitycompass.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-security_compass.png);">Security Compass</a></li>
@@ -90,9 +90,9 @@ Our gold sponsors include companies large and small. Many thanks for their signi
 <li><a href="http://www.hipflaskapp.com" rel="nofollow" style="background-image:url(../../img/sponsors/2-hipflask.png);">Hipflask</a></li>
 <li><a href="http://www.crate.io/" rel="nofollow" style="background-image:url(../../img/sponsors/2-crate.png);">Crate</a></li>
 <li><a href="http://crypticocorp.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-cryptico.png);">Cryptico Corp</a></li>
-<li><a href="http://www.nexthub.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-nexthub.png);">NextHub</a></li>
+<li><a rel="nofollow" style="background-image:url(../../img/sponsors/2-nexthub.png);">NextHub</a></li>
 <li><a href="https://www.compile.com/" rel="nofollow" style="background-image:url(../../img/sponsors/2-compile.png);">Compile</a></li>
-<li><a href="http://wusawork.org" rel="nofollow" style="background-image:url(../../img/sponsors/2-wusawork.png);">WusaWork</a></li>
+<li><a rel="nofollow" style="background-image:url(../../img/sponsors/2-wusawork.png);">WusaWork</a></li>
 <li><a href="http://envisionlinux.org/blog" rel="nofollow">Envision Linux</a></li>
 </ul>
 
@@ -116,7 +116,7 @@ The serious financial contribution that our silver sponsors have made is very mu
 <li><a href="https://garfo.io/" rel="nofollow" style="background-image:url(../../img/sponsors/3-garfo.png);">Garfo</a></li>
 <li><a href="https://goshippo.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-shippo.png);">Shippo</a></li>
 <li><a href="http://www.gizmag.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-gizmag.png);">Gizmag</a></li>
-<li><a href="http://www.tivix.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-tivix.png);">Tivix</a></li>
+<li><a href="https://www.tivix.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-tivix.png);">Tivix</a></li>
 <li><a href="https://www.safaribooksonline.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-safari.png);">Safari</a></li>
 <li><a href="http://brightloop.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-brightloop.png);">Bright Loop</a></li>
 <li><a href="http://www.aba-systems.com.au/" rel="nofollow" style="background-image:url(../../img/sponsors/3-aba.png);">ABA Systems</a></li>
@@ -131,7 +131,7 @@ The serious financial contribution that our silver sponsors have made is very mu
 <li><a href="https://fluxility.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-fluxility.png);">Fluxility</a></li>
 <li><a href="https://teonite.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-teonite.png);">Teonite</a></li>
 <li><a href="https://trackmaven.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-trackmaven.png);">TrackMaven</a></li>
-<li><a href="http://www.phurba.net/" rel="nofollow" style="background-image:url(../../img/sponsors/3-phurba.png);">Phurba</a></li>
+<li><a href="https://www.phurba.net/" rel="nofollow" style="background-image:url(../../img/sponsors/3-phurba.png);">Phurba</a></li>
 <li><a href="https://www.nephila.it/it/" rel="nofollow" style="background-image:url(../../img/sponsors/3-nephila.png);">Nephila</a></li>
 <li><a href="http://www.aditium.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-aditium.png);">Aditium</a></li>
 <li><a href="https://www.eyesopen.com/" rel="nofollow" style="background-image:url(../../img/sponsors/3-openeye.png);">OpenEye Scientific Software</a></li>
diff --git a/docs/community/mozilla-grant.md b/docs/community/mozilla-grant.md
index 4d9b1d438..5248f5cc0 100644
--- a/docs/community/mozilla-grant.md
+++ b/docs/community/mozilla-grant.md
@@ -4,7 +4,7 @@ We have recently been [awarded a Mozilla grant](https://blog.mozilla.org/blog/20
 
 Additionally, we will be building on the realtime support that Django Channels provides, supporting and documenting how to build realtime APIs with REST framework. Again, this will include supporting work in the associated client libraries, making it easier to build richly interactive applications.
 
-The [Core API](http://www.coreapi.org) project will provide the foundations for our client library support, and will allow us to support interaction using a wide range of schemas and hypermedia formats. It's worth noting that these client libraries won't be tightly coupled to solely REST framework APIs either, and will be able to interact with *any* API that exposes a supported schema or hypermedia format.
+The [Core API](https://www.coreapi.org/) project will provide the foundations for our client library support, and will allow us to support interaction using a wide range of schemas and hypermedia formats. It's worth noting that these client libraries won't be tightly coupled to solely REST framework APIs either, and will be able to interact with *any* API that exposes a supported schema or hypermedia format.
 
 Specifically, the work includes:
 
@@ -34,7 +34,7 @@ In order to ensure that I can be fully focused on trying to secure a sustainable
 & well-funded open source business I will be leaving my current role at [DabApps](https://www.dabapps.com/)
 at the end of May 2016.
 
-I have formed a UK limited company, [Encode](http://www.encode.io), which will
+I have formed a UK limited company, [Encode](https://www.encode.io/), which will
 act as the business entity behind REST framework. I will be issuing monthly reports
 from Encode on progress both towards the Mozilla grant, and for development time
 funded via the [REST framework paid plans](funding.md).
diff --git a/docs/community/project-management.md b/docs/community/project-management.md
index c7f064e13..5d7dab561 100644
--- a/docs/community/project-management.md
+++ b/docs/community/project-management.md
@@ -39,7 +39,7 @@ The following template should be used for the description of the issue, and serv
 
     This issue is for determining the maintenance team for the *** period.
 
-    Please see the [Project management](http://www.django-rest-framework.org/topics/project-management/) section of our documentation for more details.
+    Please see the [Project management](https://www.django-rest-framework.org/topics/project-management/) section of our documentation for more details.
 
     ---
 
@@ -59,7 +59,7 @@ The following template should be used for the description of the issue, and serv
 
     If you wish to be considered for this or a future date, please comment against this or subsequent issues.
 
-    To modify this process for future maintenance cycles make a pull request to the [project management](http://www.django-rest-framework.org/topics/project-management/) documentation.
+    To modify this process for future maintenance cycles make a pull request to the [project management](https://www.django-rest-framework.org/topics/project-management/) documentation.
 
 #### Responsibilities of team members
 
@@ -99,7 +99,7 @@ The following template should be used for the description of the issue, and serv
 
     During development cycle:
 
-    - [ ] Upload the new content to be translated to [transifex](http://www.django-rest-framework.org/topics/project-management/#translations).
+    - [ ] Upload the new content to be translated to [transifex](https://www.django-rest-framework.org/topics/project-management/#translations).
 
 
     Checklist:
@@ -110,7 +110,7 @@ The following template should be used for the description of the issue, and serv
         - [ ] `setup.py` Python & Django version trove classifiers
         - [ ] `README` Python & Django versions
         - [ ] `docs` Python & Django versions
-    - [ ] Update the translations from [transifex](http://www.django-rest-framework.org/topics/project-management/#translations).
+    - [ ] Update the translations from [transifex](https://www.django-rest-framework.org/topics/project-management/#translations).
     - [ ] Ensure the pull request increments the version to `*.*.*` in [`restframework/__init__.py`](https://github.com/encode/django-rest-framework/blob/master/rest_framework/__init__.py).
     - [ ] Confirm with @tomchristie that release is finalized and ready to go.
     - [ ] Ensure that release date is included in pull request.
@@ -122,7 +122,7 @@ The following template should be used for the description of the issue, and serv
     - [ ] Make a release announcement on twitter.
     - [ ] Close the milestone on GitHub.
 
-    To modify this process for future releases make a pull request to the [project management](http://www.django-rest-framework.org/topics/project-management/) documentation.
+    To modify this process for future releases make a pull request to the [project management](https://www.django-rest-framework.org/topics/project-management/) documentation.
 
 When pushing the release to PyPI ensure that your environment has been installed from our development `requirement.txt`, so that documentation and PyPI installs are consistently being built against a pinned set of packages.
 
@@ -152,7 +152,7 @@ When any user visible strings are changed, they should be uploaded to Transifex
 
     # 1. Update the source django.po file, which is the US English version.
     cd rest_framework
-    django-admin.py makemessages -l en_US
+    django-admin makemessages -l en_US
     # 2. Push the source django.po file to Transifex.
     cd ..
     tx push -s
@@ -173,7 +173,7 @@ When a translator has finished translating their work needs to be downloaded fro
     tx pull -a --minimum-perc 10
     cd rest_framework
     # 4. Compile the binary .mo files for all supported languages.
-    django-admin.py compilemessages
+    django-admin compilemessages
 
 ---
 
diff --git a/docs/community/release-notes.md b/docs/community/release-notes.md
index e9f8d5abc..cda24809f 100644
--- a/docs/community/release-notes.md
+++ b/docs/community/release-notes.md
@@ -18,9 +18,9 @@ REST framework releases follow a formal deprecation policy, which is in line wit
 
 The timeline for deprecation of a feature present in version 1.0 would work as follows:
 
-* Version 1.1 would remain **fully backwards compatible** with 1.0, but would raise `PendingDeprecationWarning` warnings if you use the feature that are due to be deprecated.  These warnings are **silent by default**, but can be explicitly enabled when you're ready to start migrating any required changes.  For example if you start running your tests using `python -Wd manage.py test`, you'll be warned of any API changes you need to make.
+* Version 1.1 would remain **fully backwards compatible** with 1.0, but would raise `RemovedInDRF13Warning` warnings, subclassing `PendingDeprecationWarning`, if you use the feature that are due to be deprecated.  These warnings are **silent by default**, but can be explicitly enabled when you're ready to start migrating any required changes.  For example if you start running your tests using `python -Wd manage.py test`, you'll be warned of any API changes you need to make.
 
-* Version 1.2 would escalate these warnings to `DeprecationWarning`, which is loud by default.
+* Version 1.2 would escalate these warnings to subclass `DeprecationWarning`, which is loud by default.
 
 * Version 1.3 would remove the deprecated bits of API entirely.
 
@@ -40,12 +40,99 @@ You can determine your currently installed version using `pip show`:
 
 ## 3.9.x series
 
+### 3.9.4
+
+**Date**: [10th May 2019]
+
+This is a maintenance release that fixes an error handling bug under Python 2.
+
+### 3.9.3
+
+**Date**: [29th April 2019]
+
+This is the last Django REST Framework release that will support Python 2.
+Be sure to upgrade to Python 3 before upgrading to Django REST Framework 3.10.
+
+* Adjusted the compat check for django-guardian to allow the last guardian
+  version (v1.4.9) compatible with Python 2. [#6613][gh6613]
+
+### 3.9.2
+
+**Date**: [3rd March 2019][3.9.1-milestone]
+
+* Routers: invalidate `_urls` cache on `register()` [#6407][gh6407]
+* Deferred schema renderer creation to avoid requiring pyyaml. [#6416][gh6416]
+* Added 'request_forms' block to base.html [#6340][gh6340]
+* Fixed SchemaView to reset renderer on exception. [#6429][gh6429]
+* Update Django Guardian dependency. [#6430][gh6430]
+* Ensured support for Django 2.2 [#6422][gh6422] & [#6455][gh6455]
+* Made templates compatible with session-based CSRF. [#6207][gh6207]
+* Adjusted field `validators` to accept non-list iterables. [#6282][gh6282]
+* Added SearchFilter.get_search_fields() hook. [#6279][gh6279]
+* Fix DeprecationWarning when accessing collections.abc classes via collections [#6268][gh6268]
+* Allowed Q objects in limit_choices_to introspection. [#6472][gh6472]
+* Added lazy evaluation to composed permissions. [#6463][gh6463]
+* Add negation ~ operator to permissions composition [#6361][gh6361]
+* Avoided calling distinct on annotated fields in SearchFilter. [#6240][gh6240]
+* Introduced `RemovedInDRF…Warning` classes to simplify deprecations. [#6480][gh6480]
+
+### 3.9.1
+
+**Date**: [16th January 2019][3.9.1-milestone]
+
+* Resolve XSS issue in browsable API. [#6330][gh6330]
+* Upgrade Bootstrap to 3.4.0 to resolve XSS issue.
+* Resolve issues with composable permissions. [#6299][gh6299]
+* Respect `limit_choices_to` on foreign keys. [#6371][gh6371]
+
 ### 3.9.0
 
-**Date**: Unreleased
+**Date**: [18th October 2018][3.9.0-milestone]
 
+* Improvements to ViewSet extra actions [#5605][gh5605]
+* Fix `action` support for ViewSet suffixes [#6081][gh6081]
+* Allow `action` docs sections [#6060][gh6060]
 * Deprecate the `Router.register` `base_name` argument in favor of `basename`. [#5990][gh5990]
 * Deprecate the `Router.get_default_base_name` method in favor of `Router.get_default_basename`. [#5990][gh5990]
+* Change `CharField` to disallow null bytes. [#6073][gh6073]
+  To revert to the old behavior, subclass `CharField` and remove `ProhibitNullCharactersValidator` from the validators.
+  ```python
+  class NullableCharField(serializers.CharField):
+      def __init__(self, *args, **kwargs):
+          super().__init__(*args, **kwargs)
+          self.validators = [v for v in self.validators if not isinstance(v, ProhibitNullCharactersValidator)]
+  ```
+* Add `OpenAPIRenderer` and `generate_schema` management command. [#6229][gh6229]
+* Add OpenAPIRenderer by default, and add schema docs. [#6233][gh6233]
+* Allow permissions to be composed [#5753][gh5753]
+* Allow nullable BooleanField in Django 2.1 [#6183][gh6183]
+* Add testing of Python 3.7 support [#6141][gh6141]
+* Test using Django 2.1 final release. [#6109][gh6109]
+* Added djangorestframework-datatables to third-party packages [#5931][gh5931]
+* Change ISO 8601 date format to exclude year/month [#5936][gh5936]
+* Update all pypi.python.org URLs to pypi.org [#5942][gh5942]
+* Ensure that html forms (multipart form data) respect optional fields [#5927][gh5927]
+* Allow hashing of ErrorDetail. [#5932][gh5932]
+* Correct schema parsing for JSONField [#5878][gh5878]
+* Render descriptions (from help_text) using safe [#5869][gh5869]
+* Removed input value from deault_error_message [#5881][gh5881]
+* Added min_value/max_value support in DurationField [#5643][gh5643]
+* Fixed instance being overwritten in pk-only optimization try/except block [#5747][gh5747]
+* Fixed AttributeError from items filter when value is None [#5981][gh5981]
+* Fixed Javascript `e.indexOf` is not a function error [#5982][gh5982]
+* Fix schemas for extra actions [#5992][gh5992]
+* Improved get_error_detail to use error_dict/error_list [#5785][gh5785]
+* Imprvied URLs in Admin renderer [#5988][gh5988]
+* Add "Community" section to docs, minor cleanup [#5993][gh5993]
+* Moved guardian imports out of compat [#6054][gh6054]
+* Deprecate the `DjangoObjectPermissionsFilter` class, moved to the `djangorestframework-guardian` package. [#6075][gh6075]
+* Drop Django 1.10 support [#5657][gh5657]
+* Only catch TypeError/ValueError for object lookups [#6028][gh6028]
+* Handle models without .objects manager in ModelSerializer. [#6111][gh6111]
+* Improve ModelSerializer.create() error message. [#6112][gh6112]
+* Fix CSRF cookie check failure when using session auth with django 1.11.6+ [#6113][gh6113]
+* Updated JWT docs. [#6138][gh6138]
+* Fix autoescape not getting passed to urlize_quoted_links filter [#6191][gh6191]
 
 
 ## 3.8.x series
@@ -1092,6 +1179,9 @@ For older release notes, [please see the version 2.x documentation][old-release-
 [3.8.0-milestone]: https://github.com/encode/django-rest-framework/milestone/61?closed=1
 [3.8.1-milestone]: https://github.com/encode/django-rest-framework/milestone/67?closed=1
 [3.8.2-milestone]: https://github.com/encode/django-rest-framework/milestone/68?closed=1
+[3.9.0-milestone]: https://github.com/encode/django-rest-framework/milestone/66?closed=1
+[3.9.1-milestone]: https://github.com/encode/django-rest-framework/milestone/70?closed=1
+[3.9.1-milestone]: https://github.com/encode/django-rest-framework/milestone/71?closed=1
 
 <!-- 3.0.1 -->
 [gh2013]: https://github.com/encode/django-rest-framework/issues/2013
@@ -1973,4 +2063,65 @@ For older release notes, [please see the version 2.x documentation][old-release-
 [gh5920]: https://github.com/encode/django-rest-framework/issues/5920
 
 <!-- 3.9.0 -->
+[gh6109]: https://github.com/encode/django-rest-framework/issues/6109
+[gh6141]: https://github.com/encode/django-rest-framework/issues/6141
+[gh6113]: https://github.com/encode/django-rest-framework/issues/6113
+[gh6112]: https://github.com/encode/django-rest-framework/issues/6112
+[gh6111]: https://github.com/encode/django-rest-framework/issues/6111
+[gh6028]: https://github.com/encode/django-rest-framework/issues/6028
+[gh5657]: https://github.com/encode/django-rest-framework/issues/5657
+[gh6054]: https://github.com/encode/django-rest-framework/issues/6054
+[gh5993]: https://github.com/encode/django-rest-framework/issues/5993
 [gh5990]: https://github.com/encode/django-rest-framework/issues/5990
+[gh5988]: https://github.com/encode/django-rest-framework/issues/5988
+[gh5785]: https://github.com/encode/django-rest-framework/issues/5785
+[gh5992]: https://github.com/encode/django-rest-framework/issues/5992
+[gh5605]: https://github.com/encode/django-rest-framework/issues/5605
+[gh5982]: https://github.com/encode/django-rest-framework/issues/5982
+[gh5981]: https://github.com/encode/django-rest-framework/issues/5981
+[gh5747]: https://github.com/encode/django-rest-framework/issues/5747
+[gh5643]: https://github.com/encode/django-rest-framework/issues/5643
+[gh5881]: https://github.com/encode/django-rest-framework/issues/5881
+[gh5869]: https://github.com/encode/django-rest-framework/issues/5869
+[gh5878]: https://github.com/encode/django-rest-framework/issues/5878
+[gh5932]: https://github.com/encode/django-rest-framework/issues/5932
+[gh5927]: https://github.com/encode/django-rest-framework/issues/5927
+[gh5942]: https://github.com/encode/django-rest-framework/issues/5942
+[gh5936]: https://github.com/encode/django-rest-framework/issues/5936
+[gh5931]: https://github.com/encode/django-rest-framework/issues/5931
+[gh6183]: https://github.com/encode/django-rest-framework/issues/6183
+[gh6075]: https://github.com/encode/django-rest-framework/issues/6075
+[gh6138]: https://github.com/encode/django-rest-framework/issues/6138
+[gh6081]: https://github.com/encode/django-rest-framework/issues/6081
+[gh6073]: https://github.com/encode/django-rest-framework/issues/6073
+[gh6191]: https://github.com/encode/django-rest-framework/issues/6191
+[gh6060]: https://github.com/encode/django-rest-framework/issues/6060
+[gh6233]: https://github.com/encode/django-rest-framework/issues/6233
+[gh5753]: https://github.com/encode/django-rest-framework/issues/5753
+[gh6229]: https://github.com/encode/django-rest-framework/issues/6229
+
+<!-- 3.9.1 -->
+[gh6330]: https://github.com/encode/django-rest-framework/issues/6330
+[gh6299]: https://github.com/encode/django-rest-framework/issues/6299
+[gh6371]: https://github.com/encode/django-rest-framework/issues/6371
+
+<!-- 3.9.2 -->
+[gh6480]: https://github.com/encode/django-rest-framework/issues/6480
+[gh6240]: https://github.com/encode/django-rest-framework/issues/6240
+[gh6361]: https://github.com/encode/django-rest-framework/issues/6361
+[gh6463]: https://github.com/encode/django-rest-framework/issues/6463
+[gh6472]: https://github.com/encode/django-rest-framework/issues/6472
+[gh6268]: https://github.com/encode/django-rest-framework/issues/6268
+[gh6279]: https://github.com/encode/django-rest-framework/issues/6279
+[gh6282]: https://github.com/encode/django-rest-framework/issues/6282
+[gh6207]: https://github.com/encode/django-rest-framework/issues/6207
+[gh6455]: https://github.com/encode/django-rest-framework/issues/6455
+[gh6422]: https://github.com/encode/django-rest-framework/issues/6422
+[gh6430]: https://github.com/encode/django-rest-framework/issues/6430
+[gh6429]: https://github.com/encode/django-rest-framework/issues/6429
+[gh6340]: https://github.com/encode/django-rest-framework/issues/6340
+[gh6416]: https://github.com/encode/django-rest-framework/issues/6416
+[gh6407]: https://github.com/encode/django-rest-framework/issues/6407
+
+<!-- 3.9.3 -->
+[gh6613]: https://github.com/encode/django-rest-framework/issues/6613
diff --git a/docs/community/third-party-packages.md b/docs/community/third-party-packages.md
index 08d4e76e0..135b600f9 100644
--- a/docs/community/third-party-packages.md
+++ b/docs/community/third-party-packages.md
@@ -183,8 +183,7 @@ To submit new content, [open an issue][drf-create-issue] or [create a pull reque
 
 * [djangorestframework-digestauth][djangorestframework-digestauth] - Provides Digest Access Authentication support.
 * [django-oauth-toolkit][django-oauth-toolkit] - Provides OAuth 2.0 support.
-* [djangorestframework-jwt][djangorestframework-jwt] - Provides JSON Web Token Authentication support.
-* [djangorestframework-simplejwt][djangorestframework-simplejwt] - An alternative package that provides JSON Web Token Authentication support.
+* [djangorestframework-simplejwt][djangorestframework-simplejwt] - Provides JSON Web Token Authentication support.
 * [hawkrest][hawkrest] - Provides Hawk HTTP Authorization.
 * [djangorestframework-httpsignature][djangorestframework-httpsignature] - Provides an easy to use HTTP Signature Authentication mechanism.
 * [djoser][djoser] - Provides a set of views to handle basic actions such as registration, login, logout, password reset and account activation.
@@ -264,6 +263,8 @@ To submit new content, [open an issue][drf-create-issue] or [create a pull reque
 * [django-rest-messaging][django-rest-messaging], [django-rest-messaging-centrifugo][django-rest-messaging-centrifugo] and [django-rest-messaging-js][django-rest-messaging-js] - A real-time pluggable messaging service using DRM.
 * [djangorest-alchemy][djangorest-alchemy] - SQLAlchemy support for REST framework.
 * [djangorestframework-datatables][djangorestframework-datatables] - Seamless integration between Django REST framework and [Datatables](https://datatables.net).
+* [django-rest-framework-condition][django-rest-framework-condition] - Decorators for managing HTTP cache headers for Django REST framework (ETag and Last-modified).
+* [django-rest-witchcraft][django-rest-witchcraft] - Provides DRF integration with SQLAlchemy with SQLAlchemy model serializers/viewsets and a bunch of other goodies
 
 [cite]: http://www.software-ecosystems.com/Software_Ecosystems/Ecosystems.html
 [cookiecutter]: https://github.com/jpadilla/cookiecutter-django-rest-framework
@@ -337,3 +338,5 @@ To submit new content, [open an issue][drf-create-issue] or [create a pull reque
 [drfpasswordless]: https://github.com/aaronn/django-rest-framework-passwordless
 [djangorest-alchemy]: https://github.com/dealertrack/djangorest-alchemy
 [djangorestframework-datatables]: https://github.com/izimobil/django-rest-framework-datatables
+[django-rest-framework-condition]: https://github.com/jozo/django-rest-framework-condition
+[django-rest-witchcraft]: https://github.com/shosca/django-rest-witchcraft
diff --git a/docs/community/tutorials-and-resources.md b/docs/community/tutorials-and-resources.md
index 8c30bbeaa..a03d63a3c 100644
--- a/docs/community/tutorials-and-resources.md
+++ b/docs/community/tutorials-and-resources.md
@@ -85,8 +85,8 @@ Want your Django REST Framework talk/tutorial/article to be added to our website
 
 
 [beginners-guide-to-the-django-rest-framework]: https://code.tutsplus.com/tutorials/beginners-guide-to-the-django-rest-framework--cms-19786
-[getting-started-with-django-rest-framework-and-angularjs]: http://blog.kevinastone.com/getting-started-with-django-rest-framework-and-angularjs.html
-[end-to-end-web-app-with-django-rest-framework-angularjs]: http://mourafiq.com/2013/07/01/end-to-end-web-app-with-django-angular-1.html
+[getting-started-with-django-rest-framework-and-angularjs]: https://blog.kevinastone.com/getting-started-with-django-rest-framework-and-angularjs.html
+[end-to-end-web-app-with-django-rest-framework-angularjs]: https://mourafiq.com/2013/07/01/end-to-end-web-app-with-django-angular-1.html
 [start-your-api-django-rest-framework-part-1]: https://godjango.com/41-start-your-api-django-rest-framework-part-1/
 [permissions-authentication-django-rest-framework-part-2]: https://godjango.com/43-permissions-authentication-django-rest-framework-part-2/
 [viewsets-and-routers-django-rest-framework-part-3]: https://godjango.com/45-viewsets-and-routers-django-rest-framework-part-3/
diff --git a/docs/img/drf-openapi.png b/docs/img/drf-openapi.png
deleted file mode 100644
index 7a37e19d6..000000000
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diff --git a/docs/img/drfdocs.png b/docs/img/drfdocs.png
deleted file mode 100644
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diff --git a/docs/img/premium/kloudless-readme.png b/docs/img/premium/kloudless-readme.png
new file mode 100644
index 000000000..5d32b31b6
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diff --git a/docs/img/premium/lightson-readme.png b/docs/img/premium/lightson-readme.png
new file mode 100644
index 000000000..3c8c6c62a
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diff --git a/docs/img/premium/load-impact-readme.png b/docs/img/premium/load-impact-readme.png
new file mode 100644
index 000000000..c46d36ada
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diff --git a/docs/img/premium/release-history.png b/docs/img/premium/release-history.png
new file mode 100644
index 000000000..b732b1ca2
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diff --git a/docs/index.md b/docs/index.md
index a3ae88ede..c8507cf1e 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -66,16 +66,17 @@ continued development by **[signing up for a paid plan][funding]**.
 *Every single sign-up helps us make REST framework long-term financially sustainable.*
 
 <ul class="premium-promo promo">
-    <li><a href="http://jobs.rover.com/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rover_130x130.png)">Rover.com</a></li>
     <li><a href="https://getsentry.com/welcome/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/sentry130.png)">Sentry</a></li>
     <li><a href="https://getstream.io/try-the-api/?utm_source=drf&utm_medium=banner&utm_campaign=drf" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/stream-130.png)">Stream</a></li>
-    <li><a href="https://hello.machinalis.co.uk/" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/Machinalis130.png)">Machinalis</a></li>
+    <li><a href="https://releasehistory.io" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/release-history.png)">Release History</a></li>
     <li><a href="https://rollbar.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/rollbar2.png)">Rollbar</a></li>
     <li><a href="https://cadre.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/cadre.png)">Cadre</a></li>
+    <li><a href="https://hubs.ly/H0f30Lf0" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/kloudless-plus-text.png)">Kloudless</a></li>
+    <li><a href="https://lightsonsoftware.com" style="background-image: url(https://fund-rest-framework.s3.amazonaws.com/lightson-dark.png)">Lights On Software</a></li>
 </ul>
 <div style="clear: both; padding-bottom: 20px;"></div>
 
-*Many thanks to all our [wonderful sponsors][sponsors], and in particular to our premium backers, [Rover](http://jobs.rover.com/), [Sentry](https://getsentry.com/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Machinalis](https://hello.machinalis.co.uk/), [Rollbar](https://rollbar.com), and [Cadre](https://cadre.com).*
+*Many thanks to all our [wonderful sponsors][sponsors], and in particular to our premium backers, [Sentry](https://getsentry.com/welcome/), [Stream](https://getstream.io/?utm_source=drf&utm_medium=banner&utm_campaign=drf), [Release History](https://releasehistory.io), [Rollbar](https://rollbar.com), [Cadre](https://cadre.com), [Kloudless](https://hubs.ly/H0f30Lf0), and [Lights On Software](https://lightsonsoftware.com).*
 
 ---
 
@@ -83,13 +84,16 @@ continued development by **[signing up for a paid plan][funding]**.
 
 REST framework requires the following:
 
-* Python (2.7, 3.4, 3.5, 3.6)
-* Django (1.11, 2.0, 2.1)
+* Python (3.5, 3.6, 3.7)
+* Django (1.11, 2.0, 2.1, 2.2)
+
+We **highly recommend** and only officially support the latest patch release of
+each Python and Django series.
 
 The following packages are optional:
 
 * [coreapi][coreapi] (1.32.0+) - Schema generation support.
-* [Markdown][markdown] (2.1.0+) - Markdown support for the browsable API.
+* [Markdown][markdown] (2.6.0+) - Markdown support for the browsable API.
 * [django-filter][django-filter] (1.0.1+) - Filtering support.
 * [django-crispy-forms][django-crispy-forms] - Improved HTML display for filtering.
 * [django-guardian][django-guardian] (1.1.1+) - Object level permissions support.
@@ -104,7 +108,7 @@ Install using `pip`, including any optional packages you want...
 
 ...or clone the project from github.
 
-    git clone git@github.com:encode/django-rest-framework.git
+    git clone https://github.com/encode/django-rest-framework
 
 Add `'rest_framework'` to your `INSTALLED_APPS` setting.
 
@@ -200,17 +204,22 @@ Send a description of the issue via email to [rest-framework-security@googlegrou
 
 ## License
 
-Copyright (c) 2011-2017, Tom Christie
+Copyright © 2011-present, [Encode OSS Ltd](https://www.encode.io/).
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
 
-Redistributions of source code must retain the above copyright notice, this
-list of conditions and the following disclaimer.
-Redistributions in binary form must reproduce the above copyright notice, this
-list of conditions and the following disclaimer in the documentation and/or
-other materials provided with the distribution.
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
diff --git a/docs/topics/api-clients.md b/docs/topics/api-clients.md
index ec0b4272c..3fd560634 100644
--- a/docs/topics/api-clients.md
+++ b/docs/topics/api-clients.md
@@ -521,7 +521,7 @@ You'll either want to include the API schema in your codebase directly, by copyi
     })
 
 [heroku-api]: https://devcenter.heroku.com/categories/platform-api
-[heroku-example]: http://www.coreapi.org/tools-and-resources/example-services/#heroku-json-hyper-schema
-[core-api]: http://www.coreapi.org/
+[heroku-example]: https://www.coreapi.org/tools-and-resources/example-services/#heroku-json-hyper-schema
+[core-api]: https://www.coreapi.org/
 [schema-generation]: ../api-guide/schemas.md
 [transport-adaptors]: http://docs.python-requests.org/en/master/user/advanced/#transport-adapters
diff --git a/docs/topics/browsable-api.md b/docs/topics/browsable-api.md
index 23ac25bc9..ed70c4901 100644
--- a/docs/topics/browsable-api.md
+++ b/docs/topics/browsable-api.md
@@ -94,6 +94,8 @@ To add branding and customize the look-and-feel of the login template, create a
 
 You can add your site name or branding by including the branding block:
 
+    {% extends "rest_framework/login_base.html" %}
+
     {% block branding %}
         <h3 style="margin: 0 0 20px;">My Site Name</h3>
     {% endblock %}
diff --git a/docs/topics/browser-enhancements.md b/docs/topics/browser-enhancements.md
index 32eab43a8..fa07b6064 100644
--- a/docs/topics/browser-enhancements.md
+++ b/docs/topics/browser-enhancements.md
@@ -81,7 +81,7 @@ was later [dropped from the spec][html5].  There remains
 as well as how to support content types other than form-encoded data.
 
 [cite]: https://www.amazon.com/RESTful-Web-Services-Leonard-Richardson/dp/0596529260
-[ajax-form]: https://github.com/encode/ajax-form
-[rails]: http://guides.rubyonrails.org/form_helpers.html#how-do-forms-with-put-or-delete-methods-work
+[ajax-form]: https://github.com/tomchristie/ajax-form
+[rails]: https://guides.rubyonrails.org/form_helpers.html#how-do-forms-with-put-or-delete-methods-work
 [html5]: https://www.w3.org/TR/html5-diff/#changes-2010-06-24
 [put_delete]: http://amundsen.com/examples/put-delete-forms/
diff --git a/docs/topics/documenting-your-api.md b/docs/topics/documenting-your-api.md
index d57f9d6e4..e5bf57530 100644
--- a/docs/topics/documenting-your-api.md
+++ b/docs/topics/documenting-your-api.md
@@ -16,11 +16,11 @@ The built-in API documentation includes:
 
 ### Installation
 
-The `coreapi` library is required as a dependancy for the API docs. Make sure
-to install the latest version. The `pygments` and `markdown` libraries
+The `coreapi` library is required as a dependency for the API docs. Make sure
+to install the latest version. The `Pygments` and `Markdown` libraries
 are optional but recommended.
 
-To install the API documentation, you'll need to include it in your projects URLconf:
+To install the API documentation, you'll need to include it in your project's URLconf:
 
     from rest_framework.documentation import include_docs_urls
 
@@ -39,7 +39,7 @@ This will include two different views:
 **Note**: By default `include_docs_urls` configures the underlying `SchemaView` to generate _public_ schemas.
 This means that views will not be instantiated with a `request` instance. i.e. Inside the view `self.request` will be `None`.
 
-To be compatible with this behaviour methods (such as `get_serializer` or `get_serializer_class` etc.) which inspect `self.request` or, particularly, `self.request.user` may need to be adjusted to handle this case.
+To be compatible with this behaviour, methods (such as `get_serializer` or `get_serializer_class` etc.) which inspect `self.request` or, particularly, `self.request.user` may need to be adjusted to handle this case.
 
 You may ensure views are given a `request` instance by calling `include_docs_urls` with `public=False`:
 
@@ -90,6 +90,28 @@ When using viewsets, you should use the relevant action names as delimiters.
         Create a new user instance.
         """
 
+Custom actions on viewsets can also be documented in a similar way using the method names
+as delimiters or by attaching the documentation to action mapping methods.
+    
+    class UserViewSet(viewsets.ModelViewset):
+        ...
+        
+        @action(detail=False, methods=['get', 'post'])
+        def some_action(self, request, *args, **kwargs):
+            """
+            get:
+            A description of the get method on the custom action.
+    
+            post:
+            A description of the post method on the custom action.
+            """
+
+        @some_action.mapping.put
+        def put_some_action():
+            """
+            A description of the put method on the custom action.
+            """
+
 
 ### `documentation` API Reference
 
@@ -171,34 +193,6 @@ This also translates into a very useful interactive documentation viewer in the
 
 ![Screenshot - drf-yasg][image-drf-yasg]
 
-
-#### DRF OpenAPI
-
-[DRF OpenAPI][drf-openapi] bridges the gap between OpenAPI specification and tool chain with the schema exposed
-out-of-the-box by Django Rest Framework. Its goals are:
-
-  * To be dropped into any existing DRF project without any code change necessary.
-  * Provide clear disctinction between request schema and response schema.
-  * Provide a versioning mechanism for each schema. Support defining schema by version range syntax, e.g. >1.0, <=2.0
-  * Support multiple response codes, not just 200
-  * All this information should be bound to view methods, not view classes.
-
-It also tries to stay current with the maturing schema generation mechanism provided by DRF.
-
-![Screenshot - DRF OpenAPI][image-drf-openapi]
-
----
-
-#### DRF Docs
-
-[DRF Docs][drfdocs-repo] allows you to document Web APIs made with Django REST Framework and it is authored by Emmanouil Konstantinidis. It's made to work out of the box and its setup should not take more than a couple of minutes. Complete documentation can be found on the [website][drfdocs-website] while there is also a [demo][drfdocs-demo] available for people to see what it looks like. **Live API Endpoints** allow you to utilize the endpoints from within the documentation in a neat way.
-
-Features include customizing the template with your branding, settings for hiding the docs depending on the environment and more.
-
-Both this package and Django REST Swagger are fully documented, well supported, and come highly recommended.
-
-![Screenshot - DRF docs][image-drf-docs]
-
 ---
 
 #### Django REST Swagger
@@ -209,7 +203,7 @@ Django REST Swagger supports REST framework versions 2.3 and above.
 
 Mark is also the author of the [REST Framework Docs][rest-framework-docs] package which offers clean, simple autogenerated documentation for your API but is deprecated and has moved to Django REST Swagger.
 
-Both this package and DRF docs are fully documented, well supported, and come highly recommended.
+This package is fully documented, well supported, and comes highly recommended.
 
 ![Screenshot - Django REST Swagger][image-django-rest-swagger]
 
@@ -271,7 +265,7 @@ When working with viewsets, an appropriate suffix is appended to each generated
 
 The description in the browsable API is generated from the docstring of the view or viewset.
 
-If the python `markdown` library is installed, then [markdown syntax][markdown] may be used in the docstring, and will be converted to HTML in the browsable API.  For example:
+If the python `Markdown` library is installed, then [markdown syntax][markdown] may be used in the docstring, and will be converted to HTML in the browsable API.  For example:
 
     class AccountListView(views.APIView):
         """
@@ -313,23 +307,17 @@ In this approach, rather than documenting the available API endpoints up front,
 
 To implement a hypermedia API you'll need to decide on an appropriate media type for the API, and implement a custom renderer and parser for that media type.  The [REST, Hypermedia & HATEOAS][hypermedia-docs] section of the documentation includes pointers to background reading, as well as links to various hypermedia formats.
 
-[cite]: http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
+[cite]: https://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
 [drf-yasg]: https://github.com/axnsan12/drf-yasg/
 [image-drf-yasg]: ../img/drf-yasg.png
-[drf-openapi]: https://github.com/limdauto/drf_openapi/
-[image-drf-openapi]: ../img/drf-openapi.png
-[drfdocs-repo]: https://github.com/ekonstantinidis/django-rest-framework-docs
-[drfdocs-website]: https://www.drfdocs.com/
-[drfdocs-demo]: http://demo.drfdocs.com/
 [drfautodocs-repo]: https://github.com/iMakedonsky/drf-autodocs
 [django-rest-swagger]: https://github.com/marcgibbons/django-rest-swagger
 [swagger]: https://swagger.io/
 [open-api]: https://openapis.org/
 [rest-framework-docs]: https://github.com/marcgibbons/django-rest-framework-docs
 [apiary]: https://apiary.io/
-[markdown]: https://daringfireball.net/projects/markdown/
+[markdown]: https://daringfireball.net/projects/markdown/syntax
 [hypermedia-docs]: rest-hypermedia-hateoas.md
-[image-drf-docs]: ../img/drfdocs.png
 [image-django-rest-swagger]: ../img/django-rest-swagger.png
 [image-apiary]: ../img/apiary.png
 [image-self-describing-api]: ../img/self-describing.png
diff --git a/docs/topics/html-and-forms.md b/docs/topics/html-and-forms.md
index 0b4afca12..18774926b 100644
--- a/docs/topics/html-and-forms.md
+++ b/docs/topics/html-and-forms.md
@@ -4,7 +4,7 @@ REST framework is suitable for returning both API style responses, and regular H
 
 ## Rendering HTML
 
-In order to return HTML responses you'll need to either `TemplateHTMLRenderer`, or `StaticHTMLRenderer`.
+In order to return HTML responses you'll need to use either `TemplateHTMLRenderer`, or `StaticHTMLRenderer`.
 
 The `TemplateHTMLRenderer` class expects the response to contain a dictionary of context data, and renders an HTML page based on a template that must be specified either in the view or on the response.
 
diff --git a/docs/topics/internationalization.md b/docs/topics/internationalization.md
index ed8b85836..7cfc6e247 100644
--- a/docs/topics/internationalization.md
+++ b/docs/topics/internationalization.md
@@ -43,7 +43,7 @@ REST framework includes these built-in translations both for standard exception
 
 Note that the translations only apply to the error strings themselves. The format of error messages, and the keys of field names will remain the same. An example `400 Bad Request` response body might look like this:
 
-    {"detail": {"username": ["Esse campo deve ser unico."]}}
+    {"detail": {"username": ["Esse campo deve ser único."]}}
 
 If you want to use different string for parts of the response such as `detail` and `non_field_errors` then you can modify this behavior by using a [custom exception handler][custom-exception-handler].
 
diff --git a/docs/topics/rest-hypermedia-hateoas.md b/docs/topics/rest-hypermedia-hateoas.md
index aa889f62b..d48319a26 100644
--- a/docs/topics/rest-hypermedia-hateoas.md
+++ b/docs/topics/rest-hypermedia-hateoas.md
@@ -36,7 +36,7 @@ What REST framework doesn't do is give you machine readable hypermedia formats s
 
 [cite]: https://vimeo.com/channels/restfest/page:2
 [dissertation]: https://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm
-[hypertext-driven]: http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
+[hypertext-driven]: https://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
 [restful-web-apis]: http://restfulwebapis.org/
 [building-hypermedia-apis]: https://www.amazon.com/Building-Hypermedia-APIs-HTML5-Node/dp/1449306578
 [designing-hypermedia-apis]: http://designinghypermediaapis.com/
diff --git a/docs/topics/writable-nested-serializers.md b/docs/topics/writable-nested-serializers.md
index a39feb18c..9ba719f4e 100644
--- a/docs/topics/writable-nested-serializers.md
+++ b/docs/topics/writable-nested-serializers.md
@@ -27,7 +27,7 @@ Nested data structures are easy enough to work with if they're read-only - simpl
 Some example output from our serializer.
 
     {
-        'title': 'Leaving party preperations',
+        'title': 'Leaving party preparations',
         'items': [
             {'text': 'Compile playlist', 'is_completed': True},
             {'text': 'Send invites', 'is_completed': False},
diff --git a/docs/tutorial/1-serialization.md b/docs/tutorial/1-serialization.md
index aa94eeb0e..22fe49e39 100644
--- a/docs/tutorial/1-serialization.md
+++ b/docs/tutorial/1-serialization.md
@@ -8,24 +8,24 @@ The tutorial is fairly in-depth, so you should probably get a cookie and a cup o
 
 ---
 
-**Note**: The code for this tutorial is available in the [tomchristie/rest-framework-tutorial][repo] repository on GitHub.  The completed implementation is also online as a sandbox version for testing, [available here][sandbox].
+**Note**: The code for this tutorial is available in the [encode/rest-framework-tutorial][repo] repository on GitHub.  The completed implementation is also online as a sandbox version for testing, [available here][sandbox].
 
 ---
 
 ## Setting up a new environment
 
-Before we do anything else we'll create a new virtual environment, using [virtualenv].  This will make sure our package configuration is kept nicely isolated from any other projects we're working on.
+Before we do anything else we'll create a new virtual environment, using [venv]. This will make sure our package configuration is kept nicely isolated from any other projects we're working on.
 
-    virtualenv env
+    python3 -m venv env
     source env/bin/activate
 
-Now that we're inside a virtualenv environment, we can install our package requirements.
+Now that we're inside a virtual environment, we can install our package requirements.
 
     pip install django
     pip install djangorestframework
     pip install pygments  # We'll be using this for the code highlighting
 
-**Note:** To exit the virtualenv environment at any time, just type `deactivate`.  For more information see the [virtualenv documentation][virtualenv].
+**Note:** To exit the virtual environment at any time, just type `deactivate`.  For more information see the [venv documentation][venv].
 
 ## Getting started
 
@@ -33,7 +33,7 @@ Okay, we're ready to get coding.
 To get started, let's create a new project to work with.
 
     cd ~
-    django-admin.py startproject tutorial
+    django-admin startproject tutorial
     cd tutorial
 
 Once that's done we can create an app that we'll use to create a simple Web API.
@@ -137,26 +137,26 @@ Okay, once we've got a few imports out of the way, let's create a couple of code
     snippet = Snippet(code='foo = "bar"\n')
     snippet.save()
 
-    snippet = Snippet(code='print "hello, world"\n')
+    snippet = Snippet(code='print("hello, world")\n')
     snippet.save()
 
 We've now got a few snippet instances to play with.  Let's take a look at serializing one of those instances.
 
     serializer = SnippetSerializer(snippet)
     serializer.data
-    # {'id': 2, 'title': u'', 'code': u'print "hello, world"\n', 'linenos': False, 'language': u'python', 'style': u'friendly'}
+    # {'id': 2, 'title': '', 'code': 'print("hello, world")\n', 'linenos': False, 'language': 'python', 'style': 'friendly'}
 
 At this point we've translated the model instance into Python native datatypes.  To finalize the serialization process we render the data into `json`.
 
     content = JSONRenderer().render(serializer.data)
     content
-    # '{"id": 2, "title": "", "code": "print \\"hello, world\\"\\n", "linenos": false, "language": "python", "style": "friendly"}'
+    # b'{"id": 2, "title": "", "code": "print(\\"hello, world\\")\\n", "linenos": false, "language": "python", "style": "friendly"}'
 
 Deserialization is similar.  First we parse a stream into Python native datatypes...
 
-    from django.utils.six import BytesIO
+    import io
 
-    stream = BytesIO(content)
+    stream = io.BytesIO(content)
     data = JSONParser().parse(stream)
 
 ...then we restore those native datatypes into a fully populated object instance.
@@ -165,7 +165,7 @@ Deserialization is similar.  First we parse a stream into Python native datatype
     serializer.is_valid()
     # True
     serializer.validated_data
-    # OrderedDict([('title', ''), ('code', 'print "hello, world"\n'), ('linenos', False), ('language', 'python'), ('style', 'friendly')])
+    # OrderedDict([('title', ''), ('code', 'print("hello, world")\n'), ('linenos', False), ('language', 'python'), ('style', 'friendly')])
     serializer.save()
     # <Snippet: Snippet object>
 
@@ -175,7 +175,7 @@ We can also serialize querysets instead of model instances.  To do so we simply
 
     serializer = SnippetSerializer(Snippet.objects.all(), many=True)
     serializer.data
-    # [OrderedDict([('id', 1), ('title', u''), ('code', u'foo = "bar"\n'), ('linenos', False), ('language', 'python'), ('style', 'friendly')]), OrderedDict([('id', 2), ('title', u''), ('code', u'print "hello, world"\n'), ('linenos', False), ('language', 'python'), ('style', 'friendly')]), OrderedDict([('id', 3), ('title', u''), ('code', u'print "hello, world"'), ('linenos', False), ('language', 'python'), ('style', 'friendly')])]
+    # [OrderedDict([('id', 1), ('title', ''), ('code', 'foo = "bar"\n'), ('linenos', False), ('language', 'python'), ('style', 'friendly')]), OrderedDict([('id', 2), ('title', ''), ('code', 'print("hello, world")\n'), ('linenos', False), ('language', 'python'), ('style', 'friendly')]), OrderedDict([('id', 3), ('title', ''), ('code', 'print("hello, world")'), ('linenos', False), ('language', 'python'), ('style', 'friendly')])]
 
 ## Using ModelSerializers
 
@@ -218,7 +218,6 @@ Edit the `snippets/views.py` file, and add the following.
 
     from django.http import HttpResponse, JsonResponse
     from django.views.decorators.csrf import csrf_exempt
-    from rest_framework.renderers import JSONRenderer
     from rest_framework.parsers import JSONParser
     from snippets.models import Snippet
     from snippets.serializers import SnippetSerializer
@@ -338,7 +337,7 @@ Finally, we can get a list of all of the snippets:
       {
         "id": 2,
         "title": "",
-        "code": "print \"hello, world\"\n",
+        "code": "print(\"hello, world\")\n",
         "linenos": false,
         "language": "python",
         "style": "friendly"
@@ -354,7 +353,7 @@ Or we can get a particular snippet by referencing its id:
     {
       "id": 2,
       "title": "",
-      "code": "print \"hello, world\"\n",
+      "code": "print(\"hello, world\")\n",
       "linenos": false,
       "language": "python",
       "style": "friendly"
@@ -373,7 +372,7 @@ We'll see how we can start to improve things in [part 2 of the tutorial][tut-2].
 [quickstart]: quickstart.md
 [repo]: https://github.com/encode/rest-framework-tutorial
 [sandbox]: https://restframework.herokuapp.com/
-[virtualenv]: http://www.virtualenv.org/en/latest/index.html
+[venv]: https://docs.python.org/3/library/venv.html
 [tut-2]: 2-requests-and-responses.md
 [httpie]: https://github.com/jakubroztocil/httpie#installation
 [curl]: https://curl.haxx.se/
diff --git a/docs/tutorial/2-requests-and-responses.md b/docs/tutorial/2-requests-and-responses.md
index 4a9b0dbf7..e3d21e864 100644
--- a/docs/tutorial/2-requests-and-responses.md
+++ b/docs/tutorial/2-requests-and-responses.md
@@ -143,7 +143,7 @@ We can get a list of all of the snippets, as before.
       {
         "id": 2,
         "title": "",
-        "code": "print \"hello, world\"\n",
+        "code": "print(\"hello, world\")\n",
         "linenos": false,
         "language": "python",
         "style": "friendly"
@@ -163,24 +163,24 @@ Or by appending a format suffix:
 Similarly, we can control the format of the request that we send, using the `Content-Type` header.
 
     # POST using form data
-    http --form POST http://127.0.0.1:8000/snippets/ code="print 123"
+    http --form POST http://127.0.0.1:8000/snippets/ code="print(123)"
 
     {
       "id": 3,
       "title": "",
-      "code": "print 123",
+      "code": "print(123)",
       "linenos": false,
       "language": "python",
       "style": "friendly"
     }
 
     # POST using JSON
-    http --json POST http://127.0.0.1:8000/snippets/ code="print 456"
+    http --json POST http://127.0.0.1:8000/snippets/ code="print(456)"
 
     {
         "id": 4,
         "title": "",
-        "code": "print 456",
+        "code": "print(456)",
         "linenos": false,
         "language": "python",
         "style": "friendly"
diff --git a/docs/tutorial/4-authentication-and-permissions.md b/docs/tutorial/4-authentication-and-permissions.md
index ef5b45c90..d616b6539 100644
--- a/docs/tutorial/4-authentication-and-permissions.md
+++ b/docs/tutorial/4-authentication-and-permissions.md
@@ -197,7 +197,7 @@ If we're interacting with the API programmatically we need to explicitly provide
 
 If we try to create a snippet without authenticating, we'll get an error:
 
-    http POST http://127.0.0.1:8000/snippets/ code="print 123"
+    http POST http://127.0.0.1:8000/snippets/ code="print(123)"
 
     {
         "detail": "Authentication credentials were not provided."
@@ -205,13 +205,13 @@ If we try to create a snippet without authenticating, we'll get an error:
 
 We can make a successful request by including the username and password of one of the users we created earlier.
 
-    http -a admin:password123 POST http://127.0.0.1:8000/snippets/ code="print 789"
+    http -a admin:password123 POST http://127.0.0.1:8000/snippets/ code="print(789)"
 
     {
         "id": 1,
         "owner": "admin",
         "title": "foo",
-        "code": "print 789",
+        "code": "print(789)",
         "linenos": false,
         "language": "python",
         "style": "friendly"
diff --git a/docs/tutorial/5-relationships-and-hyperlinked-apis.md b/docs/tutorial/5-relationships-and-hyperlinked-apis.md
index ae24ffeb8..0177afce1 100644
--- a/docs/tutorial/5-relationships-and-hyperlinked-apis.md
+++ b/docs/tutorial/5-relationships-and-hyperlinked-apis.md
@@ -106,7 +106,7 @@ If we're going to have a hyperlinked API, we need to make sure we name our URL p
 
 After adding all those names into our URLconf, our final `snippets/urls.py` file should look like this:
 
-    from django.conf.urls import url, include
+    from django.urls import path
     from rest_framework.urlpatterns import format_suffix_patterns
     from snippets import views
 
diff --git a/docs/tutorial/7-schemas-and-client-libraries.md b/docs/tutorial/7-schemas-and-client-libraries.md
index f8060ac29..203d81ea5 100644
--- a/docs/tutorial/7-schemas-and-client-libraries.md
+++ b/docs/tutorial/7-schemas-and-client-libraries.md
@@ -29,9 +29,10 @@ automatically generated schemas. Since we're using viewsets and routers,
 we can simply use the automatic schema generation.
 
 You'll need to install the `coreapi` python package in order to include an
-API schema.
+API schema, and `pyyaml` to render the schema into the commonly used
+YAML-based OpenAPI format.
 
-    $ pip install coreapi
+    $ pip install coreapi pyyaml
 
 We can now include a schema for our API, by including an autogenerated schema
 view in our URL configuration.
@@ -89,7 +90,7 @@ Now check that it is available on the command line...
 
       Command line client for interacting with CoreAPI services.
 
-      Visit http://www.coreapi.org for more information.
+      Visit https://www.coreapi.org/ for more information.
 
     Options:
       --version  Display the package version number.
@@ -220,8 +221,8 @@ We've reached the end of our tutorial.  If you want to get more involved in the
 
 **Now go build awesome things.**
 
-[coreapi]: http://www.coreapi.org
-[corejson]: http://www.coreapi.org/specification/encoding/#core-json-encoding
+[coreapi]: https://www.coreapi.org/
+[corejson]: https://www.coreapi.org/specification/encoding/#core-json-encoding
 [openapi]: https://openapis.org/
 [repo]: https://github.com/encode/rest-framework-tutorial
 [sandbox]: https://restframework.herokuapp.com/
diff --git a/docs/tutorial/quickstart.md b/docs/tutorial/quickstart.md
index 13152edae..8b02b888e 100644
--- a/docs/tutorial/quickstart.md
+++ b/docs/tutorial/quickstart.md
@@ -10,18 +10,18 @@ Create a new Django project named `tutorial`, then start a new app called `quick
     mkdir tutorial
     cd tutorial
 
-    # Create a virtualenv to isolate our package dependencies locally
-    virtualenv env
+    # Create a virtual environment to isolate our package dependencies locally
+    python3 -m venv env
     source env/bin/activate  # On Windows use `env\Scripts\activate`
 
-    # Install Django and Django REST framework into the virtualenv
+    # Install Django and Django REST framework into the virtual environment
     pip install django
     pip install djangorestframework
 
     # Set up a new project with a single application
-    django-admin.py startproject tutorial .  # Note the trailing '.' character
+    django-admin startproject tutorial .  # Note the trailing '.' character
     cd tutorial
-    django-admin.py startapp quickstart
+    django-admin startapp quickstart
     cd ..
 
 The project layout should look like:
@@ -46,7 +46,7 @@ The project layout should look like:
     ./tutorial/urls.py
     ./tutorial/wsgi.py
 
-It may look unusual that the application has been created within the project directory. Using the project's namespace avoids name clashes with external module (topic goes outside the scope of the quickstart).
+It may look unusual that the application has been created within the project directory. Using the project's namespace avoids name clashes with external modules (a topic that goes outside the scope of the quickstart).
 
 Now sync your database for the first time:
 
@@ -77,7 +77,7 @@ First up we're going to define some serializers. Let's create a new module named
             model = Group
             fields = ('url', 'name')
 
-Notice that we're using hyperlinked relations in this case, with `HyperlinkedModelSerializer`.  You can also use primary key and various other relationships, but hyperlinking is good RESTful design.
+Notice that we're using hyperlinked relations in this case with `HyperlinkedModelSerializer`.  You can also use primary key and various other relationships, but hyperlinking is good RESTful design.
 
 ## Views
 
@@ -111,7 +111,7 @@ We can easily break these down into individual views if we need to, but using vi
 
 Okay, now let's wire up the API URLs.  On to `tutorial/urls.py`...
 
-    from django.conf.urls import url, include
+    from django.urls import include, path
     from rest_framework import routers
     from tutorial.quickstart import views
 
@@ -122,8 +122,8 @@ Okay, now let's wire up the API URLs.  On to `tutorial/urls.py`...
     # Wire up our API using automatic URL routing.
     # Additionally, we include login URLs for the browsable API.
     urlpatterns = [
-        url(r'^', include(router.urls)),
-        url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
+        path('', include(router.urls)),
+        path('api-auth/', include('rest_framework.urls', namespace='rest_framework'))
     ]
 
 Because we're using viewsets instead of views, we can automatically generate the URL conf for our API, by simply registering the viewsets with a router class.
@@ -133,7 +133,7 @@ Again, if we need more control over the API URLs we can simply drop down to usin
 Finally, we're including default login and logout views for use with the browsable API.  That's optional, but useful if your API requires authentication and you want to use the browsable API.
 
 ## Pagination
-Pagination allows you to control how many objects per page are returned. To enable it add following lines to the `tutorial/settings.py`
+Pagination allows you to control how many objects per page are returned. To enable it add the following lines to `tutorial/settings.py`
     
     REST_FRAMEWORK = {
         'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
diff --git a/docs_theme/404.html b/docs_theme/404.html
index 078b9f5ae..a89c0a418 100644
--- a/docs_theme/404.html
+++ b/docs_theme/404.html
@@ -4,6 +4,6 @@
 
   <h1 id="404-page-not-found" style="text-align: center">404</h1>
   <p style="text-align: center"><strong>Page not found</strong></p>
-  <p style="text-align: center">Try the <a href="http://www.django-rest-framework.org/">homepage</a>, or <a href="#searchModal" data-toggle="modal">search the documentation</a>.</p>
+  <p style="text-align: center">Try the <a href="https://www.django-rest-framework.org/">homepage</a>, or <a href="#searchModal" data-toggle="modal">search the documentation</a>.</p>
 
 {% endblock %}
diff --git a/docs_theme/css/bootstrap-responsive.css b/docs_theme/css/bootstrap-responsive.css
old mode 100755
new mode 100644
index a8caf451d..ec0b51947
--- a/docs_theme/css/bootstrap-responsive.css
+++ b/docs_theme/css/bootstrap-responsive.css
@@ -3,7 +3,7 @@
  *
  * Copyright 2012 Twitter, Inc
  * Licensed under the Apache License v2.0
- * http://www.apache.org/licenses/LICENSE-2.0
+ * https://www.apache.org/licenses/LICENSE-2.0
  *
  * Designed and built with all the love in the world @twitter by @mdo and @fat.
  */
diff --git a/docs_theme/css/bootstrap.css b/docs_theme/css/bootstrap.css
old mode 100755
new mode 100644
index 53df68595..a48bbbecf
--- a/docs_theme/css/bootstrap.css
+++ b/docs_theme/css/bootstrap.css
@@ -3,7 +3,7 @@
  *
  * Copyright 2012 Twitter, Inc
  * Licensed under the Apache License v2.0
- * http://www.apache.org/licenses/LICENSE-2.0
+ * https://www.apache.org/licenses/LICENSE-2.0
  *
  * Designed and built with all the love in the world @twitter by @mdo and @fat.
  */
diff --git a/docs_theme/js/bootstrap-2.1.1-min.js b/docs_theme/js/bootstrap-2.1.1-min.js
old mode 100755
new mode 100644
diff --git a/docs_theme/nav.html b/docs_theme/nav.html
index 914d80a27..f093178d3 100644
--- a/docs_theme/nav.html
+++ b/docs_theme/nav.html
@@ -14,7 +14,7 @@
             <span class="icon-bar"></span>
             <span class="icon-bar"></span>
           </a>
-          <a class="brand" href="http://www.django-rest-framework.org">Django REST framework</a>
+          <a class="brand" href="https://www.django-rest-framework.org/">Django REST framework</a>
           <div class="nav-collapse collapse">
             {% if nav|length>1 %}
             <!-- Main navigation -->
diff --git a/mkdocs.yml b/mkdocs.yml
index 70b8c02ad..83b3c8141 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -1,5 +1,5 @@
 site_name: Django REST framework
-site_url: http://www.django-rest-framework.org/
+site_url: https://www.django-rest-framework.org/
 site_description: Django REST framework - Web APIs for Django
 
 repo_url: https://github.com/encode/django-rest-framework
@@ -65,6 +65,7 @@ pages:
      - 'Contributing to REST framework': 'community/contributing.md'
      - 'Project management': 'community/project-management.md'
      - 'Release Notes': 'community/release-notes.md'
+     - '3.9 Announcement': 'community/3.9-announcement.md'
      - '3.8 Announcement': 'community/3.8-announcement.md'
      - '3.7 Announcement': 'community/3.7-announcement.md'
      - '3.6 Announcement': 'community/3.6-announcement.md'
diff --git a/requirements/requirements-optionals.txt b/requirements/requirements-optionals.txt
index 87cdb82da..bc20c739a 100644
--- a/requirements/requirements-optionals.txt
+++ b/requirements/requirements-optionals.txt
@@ -1,7 +1,8 @@
 # Optional packages which may be used with REST framework.
-psycopg2-binary==2.7.5
+psycopg2-binary>=2.8.2, <2.9
 markdown==2.6.11
-django-guardian==1.4.9
-django-filter==1.1.0
+django-guardian==1.5.0
+django-filter>=2.1.0, <2.2
 coreapi==2.3.1
 coreschema==0.0.4
+pyyaml
diff --git a/requirements/requirements-testing.txt b/requirements/requirements-testing.txt
index fbddc4f20..152ca7169 100644
--- a/requirements/requirements-testing.txt
+++ b/requirements/requirements-testing.txt
@@ -1,4 +1,4 @@
 # Pytest for running the tests.
-pytest==3.6.2
-pytest-django==3.3.2
-pytest-cov==2.5.1
+pytest>=4.5.0,<4.6
+pytest-django>=3.4.8,<3.5
+pytest-cov>=2.7.1
diff --git a/rest_framework/__init__.py b/rest_framework/__init__.py
index fa92ab801..53dc7bd47 100644
--- a/rest_framework/__init__.py
+++ b/rest_framework/__init__.py
@@ -8,10 +8,10 @@ ______ _____ _____ _____    __
 """
 
 __title__ = 'Django REST framework'
-__version__ = '3.8.2'
+__version__ = '3.9.3'
 __author__ = 'Tom Christie'
 __license__ = 'BSD 2-Clause'
-__copyright__ = 'Copyright 2011-2018 Tom Christie'
+__copyright__ = 'Copyright 2011-2019 Encode OSS Ltd'
 
 # Version synonym
 VERSION = __version__
@@ -23,3 +23,11 @@ HTTP_HEADER_ENCODING = 'iso-8859-1'
 ISO_8601 = 'iso-8601'
 
 default_app_config = 'rest_framework.apps.RestFrameworkConfig'
+
+
+class RemovedInDRF310Warning(DeprecationWarning):
+    pass
+
+
+class RemovedInDRF311Warning(PendingDeprecationWarning):
+    pass
diff --git a/rest_framework/authentication.py b/rest_framework/authentication.py
index 25150d525..1e30728d3 100644
--- a/rest_framework/authentication.py
+++ b/rest_framework/authentication.py
@@ -1,15 +1,12 @@
 """
 Provides various authentication policies.
 """
-from __future__ import unicode_literals
-
 import base64
 import binascii
 
 from django.contrib.auth import authenticate, get_user_model
 from django.middleware.csrf import CsrfViewMiddleware
-from django.utils.six import text_type
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework import HTTP_HEADER_ENCODING, exceptions
 
@@ -21,7 +18,7 @@ def get_authorization_header(request):
     Hide some test client ickyness where the header can be unicode.
     """
     auth = request.META.get('HTTP_AUTHORIZATION', b'')
-    if isinstance(auth, text_type):
+    if isinstance(auth, str):
         # Work around django test client oddness
         auth = auth.encode(HTTP_HEADER_ENCODING)
     return auth
@@ -33,7 +30,7 @@ class CSRFCheck(CsrfViewMiddleware):
         return reason
 
 
-class BaseAuthentication(object):
+class BaseAuthentication:
     """
     All authentication classes should extend BaseAuthentication.
     """
diff --git a/rest_framework/authtoken/apps.py b/rest_framework/authtoken/apps.py
index ad01cb404..f90fe961e 100644
--- a/rest_framework/authtoken/apps.py
+++ b/rest_framework/authtoken/apps.py
@@ -1,5 +1,5 @@
 from django.apps import AppConfig
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 
 class AuthTokenConfig(AppConfig):
diff --git a/rest_framework/authtoken/management/commands/drf_create_token.py b/rest_framework/authtoken/management/commands/drf_create_token.py
index 8e06812db..3d6539244 100644
--- a/rest_framework/authtoken/management/commands/drf_create_token.py
+++ b/rest_framework/authtoken/management/commands/drf_create_token.py
@@ -38,8 +38,8 @@ class Command(BaseCommand):
             token = self.create_user_token(username, reset_token)
         except UserModel.DoesNotExist:
             raise CommandError(
-                'Cannot create the Token: user {0} does not exist'.format(
+                'Cannot create the Token: user {} does not exist'.format(
                     username)
             )
         self.stdout.write(
-            'Generated token {0} for user {1}'.format(token.key, username))
+            'Generated token {} for user {}'.format(token.key, username))
diff --git a/rest_framework/authtoken/migrations/0001_initial.py b/rest_framework/authtoken/migrations/0001_initial.py
index 75780fedf..6a46ccfff 100644
--- a/rest_framework/authtoken/migrations/0001_initial.py
+++ b/rest_framework/authtoken/migrations/0001_initial.py
@@ -1,6 +1,3 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
 from django.conf import settings
 from django.db import migrations, models
 
diff --git a/rest_framework/authtoken/migrations/0002_auto_20160226_1747.py b/rest_framework/authtoken/migrations/0002_auto_20160226_1747.py
index 9f7e58e22..43119099a 100644
--- a/rest_framework/authtoken/migrations/0002_auto_20160226_1747.py
+++ b/rest_framework/authtoken/migrations/0002_auto_20160226_1747.py
@@ -1,6 +1,3 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
 from django.conf import settings
 from django.db import migrations, models
 
diff --git a/rest_framework/authtoken/models.py b/rest_framework/authtoken/models.py
index 7e96eff93..bff42d3de 100644
--- a/rest_framework/authtoken/models.py
+++ b/rest_framework/authtoken/models.py
@@ -3,11 +3,9 @@ import os
 
 from django.conf import settings
 from django.db import models
-from django.utils.encoding import python_2_unicode_compatible
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 
-@python_2_unicode_compatible
 class Token(models.Model):
     """
     The default authorization token model.
@@ -32,7 +30,7 @@ class Token(models.Model):
     def save(self, *args, **kwargs):
         if not self.key:
             self.key = self.generate_key()
-        return super(Token, self).save(*args, **kwargs)
+        return super().save(*args, **kwargs)
 
     def generate_key(self):
         return binascii.hexlify(os.urandom(20)).decode()
diff --git a/rest_framework/authtoken/serializers.py b/rest_framework/authtoken/serializers.py
index e5f46dd66..bb552f3e5 100644
--- a/rest_framework/authtoken/serializers.py
+++ b/rest_framework/authtoken/serializers.py
@@ -1,5 +1,5 @@
 from django.contrib.auth import authenticate
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework import serializers
 
diff --git a/rest_framework/compat.py b/rest_framework/compat.py
index 28e1f1f59..1feaf9faa 100644
--- a/rest_framework/compat.py
+++ b/rest_framework/compat.py
@@ -2,12 +2,10 @@
 The `compat` module provides support for backwards compatibility with older
 versions of Django/Python, and compatibility wrappers around optional packages.
 """
-
-from __future__ import unicode_literals
+import sys
 
 from django.conf import settings
 from django.core import validators
-from django.utils import six
 from django.views.generic import View
 
 try:
@@ -22,6 +20,11 @@ except ImportError:
         RegexURLResolver as URLResolver,
     )
 
+try:
+    from django.core.validators import ProhibitNullCharactersValidator  # noqa
+except ImportError:
+    ProhibitNullCharactersValidator = None
+
 
 def get_original_route(urlpattern):
     """
@@ -70,26 +73,9 @@ def make_url_resolver(regex, urlpatterns):
         return URLResolver(regex, urlpatterns)
 
 
-def unicode_repr(instance):
-    # Get the repr of an instance, but ensure it is a unicode string
-    # on both python 3 (already the case) and 2 (not the case).
-    if six.PY2:
-        return repr(instance).decode('utf-8')
-    return repr(instance)
-
-
-def unicode_to_repr(value):
-    # Coerce a unicode string to the correct repr return type, depending on
-    # the Python version. We wrap all our `__repr__` implementations with
-    # this and then use unicode throughout internally.
-    if six.PY2:
-        return value.encode('utf-8')
-    return value
-
-
 def unicode_http_header(value):
     # Coerce HTTP header value to unicode.
-    if isinstance(value, six.binary_type):
+    if isinstance(value, bytes):
         return value.decode('iso-8859-1')
     return value
 
@@ -124,6 +110,13 @@ except ImportError:
     coreschema = None
 
 
+# pyyaml is optional
+try:
+    import yaml
+except ImportError:
+    yaml = None
+
+
 # django-crispy-forms is optional
 try:
     import crispy_forms
@@ -150,19 +143,12 @@ if 'patch' not in View.http_method_names:
     View.http_method_names = View.http_method_names + ['patch']
 
 
-# Markdown is optional
+# Markdown is optional (version 2.6+ required)
 try:
     import markdown
 
-    if markdown.version <= '2.2':
-        HEADERID_EXT_PATH = 'headerid'
-        LEVEL_PARAM = 'level'
-    elif markdown.version < '2.6':
-        HEADERID_EXT_PATH = 'markdown.extensions.headerid'
-        LEVEL_PARAM = 'level'
-    else:
-        HEADERID_EXT_PATH = 'markdown.extensions.toc'
-        LEVEL_PARAM = 'baselevel'
+    HEADERID_EXT_PATH = 'markdown.extensions.toc'
+    LEVEL_PARAM = 'baselevel'
 
     def apply_markdown(text):
         """
@@ -254,17 +240,12 @@ except ImportError:
 
 # `separators` argument to `json.dumps()` differs between 2.x and 3.x
 # See: https://bugs.python.org/issue22767
-if six.PY3:
-    SHORT_SEPARATORS = (',', ':')
-    LONG_SEPARATORS = (', ', ': ')
-    INDENT_SEPARATORS = (',', ': ')
-else:
-    SHORT_SEPARATORS = (b',', b':')
-    LONG_SEPARATORS = (b', ', b': ')
-    INDENT_SEPARATORS = (b',', b': ')
+SHORT_SEPARATORS = (',', ':')
+LONG_SEPARATORS = (', ', ': ')
+INDENT_SEPARATORS = (',', ': ')
 
 
-class CustomValidatorMessage(object):
+class CustomValidatorMessage:
     """
     We need to avoid evaluation of `lazy` translated `message` in `django.core.validators.BaseValidator.__init__`.
     https://github.com/django/django/blob/75ed5900321d170debef4ac452b8b3cf8a1c2384/django/core/validators.py#L297
@@ -274,7 +255,7 @@ class CustomValidatorMessage(object):
 
     def __init__(self, *args, **kwargs):
         self.message = kwargs.pop('message', self.message)
-        super(CustomValidatorMessage, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class MinValueValidator(CustomValidatorMessage, validators.MinValueValidator):
@@ -291,3 +272,7 @@ class MinLengthValidator(CustomValidatorMessage, validators.MinLengthValidator):
 
 class MaxLengthValidator(CustomValidatorMessage, validators.MaxLengthValidator):
     pass
+
+
+# Version Constants.
+PY36 = sys.version_info >= (3, 6)
diff --git a/rest_framework/decorators.py b/rest_framework/decorators.py
index 60078947f..5d7bd14a3 100644
--- a/rest_framework/decorators.py
+++ b/rest_framework/decorators.py
@@ -6,18 +6,16 @@ There are also various decorators for setting the API policies on function
 based views, as well as the `@detail_route` and `@list_route` decorators, which are
 used to annotate methods on viewsets that should be included by routers.
 """
-from __future__ import unicode_literals
-
 import types
 import warnings
 
 from django.forms.utils import pretty_name
-from django.utils import six
 
+from rest_framework import RemovedInDRF310Warning
 from rest_framework.views import APIView
 
 
-def api_view(http_method_names=None, exclude_from_schema=False):
+def api_view(http_method_names=None):
     """
     Decorator that converts a function-based view into an APIView subclass.
     Takes a list of allowed methods for the view as an argument.
@@ -27,7 +25,7 @@ def api_view(http_method_names=None, exclude_from_schema=False):
     def decorator(func):
 
         WrappedAPIView = type(
-            six.PY3 and 'WrappedAPIView' or b'WrappedAPIView',
+            'WrappedAPIView',
             (APIView,),
             {'__doc__': func.__doc__}
         )
@@ -77,15 +75,8 @@ def api_view(http_method_names=None, exclude_from_schema=False):
         WrappedAPIView.schema = getattr(func, 'schema',
                                         APIView.schema)
 
-        if exclude_from_schema:
-            warnings.warn(
-                "The `exclude_from_schema` argument to `api_view` is deprecated. "
-                "Use the `schema` decorator instead, passing `None`.",
-                DeprecationWarning
-            )
-            WrappedAPIView.exclude_from_schema = exclude_from_schema
-
         return WrappedAPIView.as_view()
+
     return decorator
 
 
@@ -131,7 +122,7 @@ def schema(view_inspector):
     return decorator
 
 
-def action(methods=None, detail=None, name=None, url_path=None, url_name=None, **kwargs):
+def action(methods=None, detail=None, url_path=None, url_name=None, **kwargs):
     """
     Mark a ViewSet method as a routable action.
 
@@ -145,18 +136,22 @@ def action(methods=None, detail=None, name=None, url_path=None, url_name=None, *
         "@action() missing required argument: 'detail'"
     )
 
+    # name and suffix are mutually exclusive
+    if 'name' in kwargs and 'suffix' in kwargs:
+        raise TypeError("`name` and `suffix` are mutually exclusive arguments.")
+
     def decorator(func):
         func.mapping = MethodMapper(func, methods)
 
         func.detail = detail
-        func.name = name if name else pretty_name(func.__name__)
         func.url_path = url_path if url_path else func.__name__
         func.url_name = url_name if url_name else func.__name__.replace('_', '-')
         func.kwargs = kwargs
-        func.kwargs.update({
-            'name': func.name,
-            'description': func.__doc__ or None
-        })
+
+        # Set descriptive arguments for viewsets
+        if 'name' not in kwargs and 'suffix' not in kwargs:
+            func.kwargs['name'] = pretty_name(func.__name__)
+        func.kwargs['description'] = func.__doc__ or None
 
         return func
     return decorator
@@ -226,9 +221,9 @@ def detail_route(methods=None, **kwargs):
     Used to mark a method on a ViewSet that should be routed for detail requests.
     """
     warnings.warn(
-        "`detail_route` is pending deprecation and will be removed in 3.10 in favor of "
+        "`detail_route` is deprecated and will be removed in 3.10 in favor of "
         "`action`, which accepts a `detail` bool. Use `@action(detail=True)` instead.",
-        PendingDeprecationWarning, stacklevel=2
+        RemovedInDRF310Warning, stacklevel=2
     )
 
     def decorator(func):
@@ -244,9 +239,9 @@ def list_route(methods=None, **kwargs):
     Used to mark a method on a ViewSet that should be routed for list requests.
     """
     warnings.warn(
-        "`list_route` is pending deprecation and will be removed in 3.10 in favor of "
+        "`list_route` is deprecated and will be removed in 3.10 in favor of "
         "`action`, which accepts a `detail` bool. Use `@action(detail=False)` instead.",
-        PendingDeprecationWarning, stacklevel=2
+        RemovedInDRF310Warning, stacklevel=2
     )
 
     def decorator(func):
diff --git a/rest_framework/exceptions.py b/rest_framework/exceptions.py
index f79b16129..a91138026 100644
--- a/rest_framework/exceptions.py
+++ b/rest_framework/exceptions.py
@@ -4,18 +4,14 @@ Handled exceptions raised by REST framework.
 In addition Django's built in 403 and 404 exceptions are handled.
 (`django.http.Http404` and `django.core.exceptions.PermissionDenied`)
 """
-from __future__ import unicode_literals
-
 import math
 
 from django.http import JsonResponse
-from django.utils import six
 from django.utils.encoding import force_text
-from django.utils.translation import ugettext_lazy as _
-from django.utils.translation import ungettext
+from django.utils.translation import gettext_lazy as _
+from django.utils.translation import ngettext
 
 from rest_framework import status
-from rest_framework.compat import unicode_to_repr
 from rest_framework.utils.serializer_helpers import ReturnDict, ReturnList
 
 
@@ -64,19 +60,19 @@ def _get_full_details(detail):
     }
 
 
-class ErrorDetail(six.text_type):
+class ErrorDetail(str):
     """
     A string-like object that can additionally have a code.
     """
     code = None
 
     def __new__(cls, string, code=None):
-        self = super(ErrorDetail, cls).__new__(cls, string)
+        self = super().__new__(cls, string)
         self.code = code
         return self
 
     def __eq__(self, other):
-        r = super(ErrorDetail, self).__eq__(other)
+        r = super().__eq__(other)
         try:
             return r and self.code == other.code
         except AttributeError:
@@ -86,10 +82,10 @@ class ErrorDetail(six.text_type):
         return not self.__eq__(other)
 
     def __repr__(self):
-        return unicode_to_repr('ErrorDetail(string=%r, code=%r)' % (
-            six.text_type(self),
+        return 'ErrorDetail(string=%r, code=%r)' % (
+            str(self),
             self.code,
-        ))
+        )
 
     def __hash__(self):
         return hash(str(self))
@@ -113,7 +109,7 @@ class APIException(Exception):
         self.detail = _get_error_details(detail, code)
 
     def __str__(self):
-        return six.text_type(self.detail)
+        return str(self.detail)
 
     def get_codes(self):
         """
@@ -196,7 +192,7 @@ class MethodNotAllowed(APIException):
     def __init__(self, method, detail=None, code=None):
         if detail is None:
             detail = force_text(self.default_detail).format(method=method)
-        super(MethodNotAllowed, self).__init__(detail, code)
+        super().__init__(detail, code)
 
 
 class NotAcceptable(APIException):
@@ -206,7 +202,7 @@ class NotAcceptable(APIException):
 
     def __init__(self, detail=None, code=None, available_renderers=None):
         self.available_renderers = available_renderers
-        super(NotAcceptable, self).__init__(detail, code)
+        super().__init__(detail, code)
 
 
 class UnsupportedMediaType(APIException):
@@ -217,7 +213,7 @@ class UnsupportedMediaType(APIException):
     def __init__(self, media_type, detail=None, code=None):
         if detail is None:
             detail = force_text(self.default_detail).format(media_type=media_type)
-        super(UnsupportedMediaType, self).__init__(detail, code)
+        super().__init__(detail, code)
 
 
 class Throttled(APIException):
@@ -234,11 +230,11 @@ class Throttled(APIException):
             wait = math.ceil(wait)
             detail = ' '.join((
                 detail,
-                force_text(ungettext(self.extra_detail_singular.format(wait=wait),
-                                     self.extra_detail_plural.format(wait=wait),
-                                     wait))))
+                force_text(ngettext(self.extra_detail_singular.format(wait=wait),
+                                    self.extra_detail_plural.format(wait=wait),
+                                    wait))))
         self.wait = wait
-        super(Throttled, self).__init__(detail, code)
+        super().__init__(detail, code)
 
 
 def server_error(request, *args, **kwargs):
diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index 3278cf51c..aecfa3302 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-
-import collections
 import copy
 import datetime
 import decimal
@@ -9,6 +6,7 @@ import inspect
 import re
 import uuid
 from collections import OrderedDict
+from collections.abc import Mapping
 
 from django.conf import settings
 from django.core.exceptions import ObjectDoesNotExist
@@ -18,7 +16,7 @@ from django.core.validators import (
 )
 from django.forms import FilePathField as DjangoFilePathField
 from django.forms import ImageField as DjangoImageField
-from django.utils import six, timezone
+from django.utils import timezone
 from django.utils.dateparse import (
     parse_date, parse_datetime, parse_duration, parse_time
 )
@@ -28,13 +26,13 @@ from django.utils.formats import localize_input, sanitize_separators
 from django.utils.functional import lazy
 from django.utils.ipv6 import clean_ipv6_address
 from django.utils.timezone import utc
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from pytz.exceptions import InvalidTimeError
 
 from rest_framework import ISO_8601
 from rest_framework.compat import (
     MaxLengthValidator, MaxValueValidator, MinLengthValidator,
-    MinValueValidator, unicode_repr, unicode_to_repr
+    MinValueValidator, ProhibitNullCharactersValidator
 )
 from rest_framework.exceptions import ErrorDetail, ValidationError
 from rest_framework.settings import api_settings
@@ -51,39 +49,21 @@ class empty:
     pass
 
 
-if six.PY3:
-    def is_simple_callable(obj):
-        """
-        True if the object is a callable that takes no arguments.
-        """
-        if not (inspect.isfunction(obj) or inspect.ismethod(obj) or isinstance(obj, functools.partial)):
-            return False
+def is_simple_callable(obj):
+    """
+    True if the object is a callable that takes no arguments.
+    """
+    if not (inspect.isfunction(obj) or inspect.ismethod(obj) or isinstance(obj, functools.partial)):
+        return False
 
-        sig = inspect.signature(obj)
-        params = sig.parameters.values()
-        return all(
-            param.kind == param.VAR_POSITIONAL or
-            param.kind == param.VAR_KEYWORD or
-            param.default != param.empty
-            for param in params
-        )
-
-else:
-    def is_simple_callable(obj):
-        function = inspect.isfunction(obj)
-        method = inspect.ismethod(obj)
-
-        if not (function or method):
-            return False
-
-        if method:
-            is_unbound = obj.im_self is None
-
-        args, _, _, defaults = inspect.getargspec(obj)
-
-        len_args = len(args) if function or is_unbound else len(args) - 1
-        len_defaults = len(defaults) if defaults else 0
-        return len_args <= len_defaults
+    sig = inspect.signature(obj)
+    params = sig.parameters.values()
+    return all(
+        param.kind == param.VAR_POSITIONAL or
+        param.kind == param.VAR_KEYWORD or
+        param.default != param.empty
+        for param in params
+    )
 
 
 def get_attribute(instance, attrs):
@@ -95,7 +75,7 @@ def get_attribute(instance, attrs):
     """
     for attr in attrs:
         try:
-            if isinstance(instance, collections.Mapping):
+            if isinstance(instance, Mapping):
                 instance = instance[attr]
             else:
                 instance = getattr(instance, attr)
@@ -108,7 +88,7 @@ def get_attribute(instance, attrs):
                 # If we raised an Attribute or KeyError here it'd get treated
                 # as an omitted field in `Field.get_attribute()`. Instead we
                 # raise a ValueError to ensure the exception is not masked.
-                raise ValueError('Exception raised in callable attribute "{0}"; original exception was: {1}'.format(attr, exc))
+                raise ValueError('Exception raised in callable attribute "{}"; original exception was: {}'.format(attr, exc))
 
     return instance
 
@@ -185,18 +165,18 @@ def iter_options(grouped_choices, cutoff=None, cutoff_text=None):
     """
     Helper function for options and option groups in templates.
     """
-    class StartOptionGroup(object):
+    class StartOptionGroup:
         start_option_group = True
         end_option_group = False
 
         def __init__(self, label):
             self.label = label
 
-    class EndOptionGroup(object):
+    class EndOptionGroup:
         start_option_group = False
         end_option_group = True
 
-    class Option(object):
+    class Option:
         start_option_group = False
         end_option_group = False
 
@@ -251,7 +231,7 @@ def get_error_detail(exc_info):
     }
 
 
-class CreateOnlyDefault(object):
+class CreateOnlyDefault:
     """
     This class may be used to provide default values that are only used
     for create operations, but that do not return any value for update
@@ -273,12 +253,10 @@ class CreateOnlyDefault(object):
         return self.default
 
     def __repr__(self):
-        return unicode_to_repr(
-            '%s(%s)' % (self.__class__.__name__, unicode_repr(self.default))
-        )
+        return '%s(%s)' % (self.__class__.__name__, repr(self.default))
 
 
-class CurrentUserDefault(object):
+class CurrentUserDefault:
     def set_context(self, serializer_field):
         self.user = serializer_field.context['request'].user
 
@@ -286,7 +264,7 @@ class CurrentUserDefault(object):
         return self.user
 
     def __repr__(self):
-        return unicode_to_repr('%s()' % self.__class__.__name__)
+        return '%s()' % self.__class__.__name__
 
 
 class SkipField(Exception):
@@ -305,7 +283,7 @@ MISSING_ERROR_MESSAGE = (
 )
 
 
-class Field(object):
+class Field:
     _creation_counter = 0
 
     default_error_messages = {
@@ -349,7 +327,7 @@ class Field(object):
                 self.default_empty_html = default
 
         if validators is not None:
-            self.validators = validators[:]
+            self.validators = list(validators)
 
         # These are set up by `.bind()` when the field is added to a serializer.
         self.field_name = None
@@ -409,7 +387,7 @@ class Field(object):
         self._validators = validators
 
     def get_validators(self):
-        return self.default_validators[:]
+        return list(self.default_validators)
 
     def get_initial(self):
         """
@@ -618,7 +596,7 @@ class Field(object):
         When a field is instantiated, we store the arguments that were used,
         so that we can present a helpful representation of the object.
         """
-        instance = super(Field, cls).__new__(cls)
+        instance = super().__new__(cls)
         instance._args = args
         instance._kwargs = kwargs
         return instance
@@ -636,7 +614,7 @@ class Field(object):
             for item in self._args
         ]
         kwargs = {
-            key: (copy.deepcopy(value) if (key not in ('validators', 'regex')) else value)
+            key: (copy.deepcopy(value, memo) if (key not in ('validators', 'regex')) else value)
             for key, value in self._kwargs.items()
         }
         return self.__class__(*args, **kwargs)
@@ -647,7 +625,7 @@ class Field(object):
         This allows us to create descriptive representations for serializer
         instances that show all the declared fields on the serializer.
         """
-        return unicode_to_repr(representation.field_repr(self))
+        return representation.field_repr(self)
 
 
 # Boolean types...
@@ -674,10 +652,7 @@ class BooleanField(Field):
         '0', 0, 0.0,
         False
     }
-
-    def __init__(self, **kwargs):
-        assert 'allow_null' not in kwargs, '`allow_null` is not a valid option. Use `NullBooleanField` instead.'
-        super(BooleanField, self).__init__(**kwargs)
+    NULL_VALUES = {'null', 'Null', 'NULL', '', None}
 
     def to_internal_value(self, data):
         try:
@@ -685,6 +660,8 @@ class BooleanField(Field):
                 return True
             elif data in self.FALSE_VALUES:
                 return False
+            elif data in self.NULL_VALUES and self.allow_null:
+                return None
         except TypeError:  # Input is an unhashable type
             pass
         self.fail('invalid', input=data)
@@ -694,6 +671,8 @@ class BooleanField(Field):
             return True
         elif value in self.FALSE_VALUES:
             return False
+        if value in self.NULL_VALUES and self.allow_null:
+            return None
         return bool(value)
 
 
@@ -718,12 +697,12 @@ class NullBooleanField(Field):
         '0', 0, 0.0,
         False
     }
-    NULL_VALUES = {'n', 'N', 'null', 'Null', 'NULL', '', None}
+    NULL_VALUES = {'null', 'Null', 'NULL', '', None}
 
     def __init__(self, **kwargs):
         assert 'allow_null' not in kwargs, '`allow_null` is not a valid option.'
         kwargs['allow_null'] = True
-        super(NullBooleanField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def to_internal_value(self, data):
         try:
@@ -754,7 +733,7 @@ class CharField(Field):
         'invalid': _('Not a valid string.'),
         'blank': _('This field may not be blank.'),
         'max_length': _('Ensure this field has no more than {max_length} characters.'),
-        'min_length': _('Ensure this field has at least {min_length} characters.')
+        'min_length': _('Ensure this field has at least {min_length} characters.'),
     }
     initial = ''
 
@@ -763,41 +742,42 @@ class CharField(Field):
         self.trim_whitespace = kwargs.pop('trim_whitespace', True)
         self.max_length = kwargs.pop('max_length', None)
         self.min_length = kwargs.pop('min_length', None)
-        super(CharField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         if self.max_length is not None:
-            message = lazy(
-                self.error_messages['max_length'].format,
-                six.text_type)(max_length=self.max_length)
+            message = lazy(self.error_messages['max_length'].format, str)(max_length=self.max_length)
             self.validators.append(
                 MaxLengthValidator(self.max_length, message=message))
         if self.min_length is not None:
             message = lazy(
-                self.error_messages['min_length'].format,
-                six.text_type)(min_length=self.min_length)
+                self.error_messages['min_length'].format, str)(min_length=self.min_length)
             self.validators.append(
                 MinLengthValidator(self.min_length, message=message))
 
+        # ProhibitNullCharactersValidator is None on Django < 2.0
+        if ProhibitNullCharactersValidator is not None:
+            self.validators.append(ProhibitNullCharactersValidator())
+
     def run_validation(self, data=empty):
         # Test for the empty string here so that it does not get validated,
         # and so that subclasses do not need to handle it explicitly
         # inside the `to_internal_value()` method.
-        if data == '' or (self.trim_whitespace and six.text_type(data).strip() == ''):
+        if data == '' or (self.trim_whitespace and str(data).strip() == ''):
             if not self.allow_blank:
                 self.fail('blank')
             return ''
-        return super(CharField, self).run_validation(data)
+        return super().run_validation(data)
 
     def to_internal_value(self, data):
         # We're lenient with allowing basic numerics to be coerced into strings,
         # but other types should fail. Eg. unclear if booleans should represent as `true` or `True`,
         # and composites such as lists are likely user error.
-        if isinstance(data, bool) or not isinstance(data, six.string_types + six.integer_types + (float,)):
+        if isinstance(data, bool) or not isinstance(data, (str, int, float,)):
             self.fail('invalid')
-        value = six.text_type(data)
+        value = str(data)
         return value.strip() if self.trim_whitespace else value
 
     def to_representation(self, value):
-        return six.text_type(value)
+        return str(value)
 
 
 class EmailField(CharField):
@@ -806,7 +786,7 @@ class EmailField(CharField):
     }
 
     def __init__(self, **kwargs):
-        super(EmailField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         validator = EmailValidator(message=self.error_messages['invalid'])
         self.validators.append(validator)
 
@@ -817,7 +797,7 @@ class RegexField(CharField):
     }
 
     def __init__(self, regex, **kwargs):
-        super(RegexField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         validator = RegexValidator(regex, message=self.error_messages['invalid'])
         self.validators.append(validator)
 
@@ -829,7 +809,7 @@ class SlugField(CharField):
     }
 
     def __init__(self, allow_unicode=False, **kwargs):
-        super(SlugField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.allow_unicode = allow_unicode
         if self.allow_unicode:
             validator = RegexValidator(re.compile(r'^[-\w]+\Z', re.UNICODE), message=self.error_messages['invalid_unicode'])
@@ -844,7 +824,7 @@ class URLField(CharField):
     }
 
     def __init__(self, **kwargs):
-        super(URLField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         validator = URLValidator(message=self.error_messages['invalid'])
         self.validators.append(validator)
 
@@ -861,16 +841,16 @@ class UUIDField(Field):
         if self.uuid_format not in self.valid_formats:
             raise ValueError(
                 'Invalid format for uuid representation. '
-                'Must be one of "{0}"'.format('", "'.join(self.valid_formats))
+                'Must be one of "{}"'.format('", "'.join(self.valid_formats))
             )
-        super(UUIDField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def to_internal_value(self, data):
         if not isinstance(data, uuid.UUID):
             try:
-                if isinstance(data, six.integer_types):
+                if isinstance(data, int):
                     return uuid.UUID(int=data)
-                elif isinstance(data, six.string_types):
+                elif isinstance(data, str):
                     return uuid.UUID(hex=data)
                 else:
                     self.fail('invalid', value=data)
@@ -895,12 +875,12 @@ class IPAddressField(CharField):
     def __init__(self, protocol='both', **kwargs):
         self.protocol = protocol.lower()
         self.unpack_ipv4 = (self.protocol == 'both')
-        super(IPAddressField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         validators, error_message = ip_address_validators(protocol, self.unpack_ipv4)
         self.validators.extend(validators)
 
     def to_internal_value(self, data):
-        if not isinstance(data, six.string_types):
+        if not isinstance(data, str):
             self.fail('invalid', value=data)
 
         if ':' in data:
@@ -910,7 +890,7 @@ class IPAddressField(CharField):
             except DjangoValidationError:
                 self.fail('invalid', value=data)
 
-        return super(IPAddressField, self).to_internal_value(data)
+        return super().to_internal_value(data)
 
 
 # Number types...
@@ -928,22 +908,20 @@ class IntegerField(Field):
     def __init__(self, **kwargs):
         self.max_value = kwargs.pop('max_value', None)
         self.min_value = kwargs.pop('min_value', None)
-        super(IntegerField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         if self.max_value is not None:
             message = lazy(
-                self.error_messages['max_value'].format,
-                six.text_type)(max_value=self.max_value)
+                self.error_messages['max_value'].format, str)(max_value=self.max_value)
             self.validators.append(
                 MaxValueValidator(self.max_value, message=message))
         if self.min_value is not None:
             message = lazy(
-                self.error_messages['min_value'].format,
-                six.text_type)(min_value=self.min_value)
+                self.error_messages['min_value'].format, str)(min_value=self.min_value)
             self.validators.append(
                 MinValueValidator(self.min_value, message=message))
 
     def to_internal_value(self, data):
-        if isinstance(data, six.text_type) and len(data) > self.MAX_STRING_LENGTH:
+        if isinstance(data, str) and len(data) > self.MAX_STRING_LENGTH:
             self.fail('max_string_length')
 
         try:
@@ -968,23 +946,23 @@ class FloatField(Field):
     def __init__(self, **kwargs):
         self.max_value = kwargs.pop('max_value', None)
         self.min_value = kwargs.pop('min_value', None)
-        super(FloatField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         if self.max_value is not None:
             message = lazy(
                 self.error_messages['max_value'].format,
-                six.text_type)(max_value=self.max_value)
+                str)(max_value=self.max_value)
             self.validators.append(
                 MaxValueValidator(self.max_value, message=message))
         if self.min_value is not None:
             message = lazy(
                 self.error_messages['min_value'].format,
-                six.text_type)(min_value=self.min_value)
+                str)(min_value=self.min_value)
             self.validators.append(
                 MinValueValidator(self.min_value, message=message))
 
     def to_internal_value(self, data):
 
-        if isinstance(data, six.text_type) and len(data) > self.MAX_STRING_LENGTH:
+        if isinstance(data, str) and len(data) > self.MAX_STRING_LENGTH:
             self.fail('max_string_length')
 
         try:
@@ -1026,18 +1004,17 @@ class DecimalField(Field):
         else:
             self.max_whole_digits = None
 
-        super(DecimalField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
         if self.max_value is not None:
             message = lazy(
                 self.error_messages['max_value'].format,
-                six.text_type)(max_value=self.max_value)
+                str)(max_value=self.max_value)
             self.validators.append(
                 MaxValueValidator(self.max_value, message=message))
         if self.min_value is not None:
             message = lazy(
-                self.error_messages['min_value'].format,
-                six.text_type)(min_value=self.min_value)
+                self.error_messages['min_value'].format, str)(min_value=self.min_value)
             self.validators.append(
                 MinValueValidator(self.min_value, message=message))
 
@@ -1116,7 +1093,7 @@ class DecimalField(Field):
         coerce_to_string = getattr(self, 'coerce_to_string', api_settings.COERCE_DECIMAL_TO_STRING)
 
         if not isinstance(value, decimal.Decimal):
-            value = decimal.Decimal(six.text_type(value).strip())
+            value = decimal.Decimal(str(value).strip())
 
         quantized = self.quantize(value)
 
@@ -1125,7 +1102,7 @@ class DecimalField(Field):
         if self.localize:
             return localize_input(quantized)
 
-        return '{0:f}'.format(quantized)
+        return '{:f}'.format(quantized)
 
     def quantize(self, value):
         """
@@ -1162,7 +1139,7 @@ class DateTimeField(Field):
             self.input_formats = input_formats
         if default_timezone is not None:
             self.timezone = default_timezone
-        super(DateTimeField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def enforce_timezone(self, value):
         """
@@ -1221,7 +1198,7 @@ class DateTimeField(Field):
 
         output_format = getattr(self, 'format', api_settings.DATETIME_FORMAT)
 
-        if output_format is None or isinstance(value, six.string_types):
+        if output_format is None or isinstance(value, str):
             return value
 
         value = self.enforce_timezone(value)
@@ -1246,7 +1223,7 @@ class DateField(Field):
             self.format = format
         if input_formats is not None:
             self.input_formats = input_formats
-        super(DateField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def to_internal_value(self, value):
         input_formats = getattr(self, 'input_formats', api_settings.DATE_INPUT_FORMATS)
@@ -1283,7 +1260,7 @@ class DateField(Field):
 
         output_format = getattr(self, 'format', api_settings.DATE_FORMAT)
 
-        if output_format is None or isinstance(value, six.string_types):
+        if output_format is None or isinstance(value, str):
             return value
 
         # Applying a `DateField` to a datetime value is almost always
@@ -1312,7 +1289,7 @@ class TimeField(Field):
             self.format = format
         if input_formats is not None:
             self.input_formats = input_formats
-        super(TimeField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def to_internal_value(self, value):
         input_formats = getattr(self, 'input_formats', api_settings.TIME_INPUT_FORMATS)
@@ -1346,7 +1323,7 @@ class TimeField(Field):
 
         output_format = getattr(self, 'format', api_settings.TIME_FORMAT)
 
-        if output_format is None or isinstance(value, six.string_types):
+        if output_format is None or isinstance(value, str):
             return value
 
         # Applying a `TimeField` to a datetime value is almost always
@@ -1373,24 +1350,24 @@ class DurationField(Field):
     def __init__(self, **kwargs):
         self.max_value = kwargs.pop('max_value', None)
         self.min_value = kwargs.pop('min_value', None)
-        super(DurationField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         if self.max_value is not None:
             message = lazy(
                 self.error_messages['max_value'].format,
-                six.text_type)(max_value=self.max_value)
+                str)(max_value=self.max_value)
             self.validators.append(
                 MaxValueValidator(self.max_value, message=message))
         if self.min_value is not None:
             message = lazy(
                 self.error_messages['min_value'].format,
-                six.text_type)(min_value=self.min_value)
+                str)(min_value=self.min_value)
             self.validators.append(
                 MinValueValidator(self.min_value, message=message))
 
     def to_internal_value(self, value):
         if isinstance(value, datetime.timedelta):
             return value
-        parsed = parse_duration(six.text_type(value))
+        parsed = parse_duration(str(value))
         if parsed is not None:
             return parsed
         self.fail('invalid', format='[DD] [HH:[MM:]]ss[.uuuuuu]')
@@ -1415,21 +1392,21 @@ class ChoiceField(Field):
 
         self.allow_blank = kwargs.pop('allow_blank', False)
 
-        super(ChoiceField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def to_internal_value(self, data):
         if data == '' and self.allow_blank:
             return ''
 
         try:
-            return self.choice_strings_to_values[six.text_type(data)]
+            return self.choice_strings_to_values[str(data)]
         except KeyError:
             self.fail('invalid_choice', input=data)
 
     def to_representation(self, value):
         if value in ('', None):
             return value
-        return self.choice_strings_to_values.get(six.text_type(value), value)
+        return self.choice_strings_to_values.get(str(value), value)
 
     def iter_options(self):
         """
@@ -1452,7 +1429,7 @@ class ChoiceField(Field):
         # Allows us to deal with eg. integer choices while supporting either
         # integer or string input, but still get the correct datatype out.
         self.choice_strings_to_values = {
-            six.text_type(key): key for key in self.choices
+            str(key): key for key in self.choices
         }
 
     choices = property(_get_choices, _set_choices)
@@ -1468,7 +1445,7 @@ class MultipleChoiceField(ChoiceField):
 
     def __init__(self, *args, **kwargs):
         self.allow_empty = kwargs.pop('allow_empty', True)
-        super(MultipleChoiceField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_value(self, dictionary):
         if self.field_name not in dictionary:
@@ -1481,7 +1458,7 @@ class MultipleChoiceField(ChoiceField):
         return dictionary.get(self.field_name, empty)
 
     def to_internal_value(self, data):
-        if isinstance(data, type('')) or not hasattr(data, '__iter__'):
+        if isinstance(data, str) or not hasattr(data, '__iter__'):
             self.fail('not_a_list', input_type=type(data).__name__)
         if not self.allow_empty and len(data) == 0:
             self.fail('empty')
@@ -1493,7 +1470,7 @@ class MultipleChoiceField(ChoiceField):
 
     def to_representation(self, value):
         return {
-            self.choice_strings_to_values.get(six.text_type(item), item) for item in value
+            self.choice_strings_to_values.get(str(item), item) for item in value
         }
 
 
@@ -1511,7 +1488,7 @@ class FilePathField(ChoiceField):
             allow_folders=allow_folders, required=required
         )
         kwargs['choices'] = field.choices
-        super(FilePathField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
 
 # File types...
@@ -1530,7 +1507,7 @@ class FileField(Field):
         self.allow_empty_file = kwargs.pop('allow_empty_file', False)
         if 'use_url' in kwargs:
             self.use_url = kwargs.pop('use_url')
-        super(FileField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def to_internal_value(self, data):
         try:
@@ -1576,13 +1553,13 @@ class ImageField(FileField):
 
     def __init__(self, *args, **kwargs):
         self._DjangoImageField = kwargs.pop('_DjangoImageField', DjangoImageField)
-        super(ImageField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def to_internal_value(self, data):
         # Image validation is a bit grungy, so we'll just outright
         # defer to Django's implementation so we don't need to
         # consider it, or treat PIL as a test dependency.
-        file_object = super(ImageField, self).to_internal_value(data)
+        file_object = super().to_internal_value(data)
         django_field = self._DjangoImageField()
         django_field.error_messages = self.error_messages
         return django_field.clean(file_object)
@@ -1592,7 +1569,7 @@ class ImageField(FileField):
 
 class _UnvalidatedField(Field):
     def __init__(self, *args, **kwargs):
-        super(_UnvalidatedField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.allow_blank = True
         self.allow_null = True
 
@@ -1625,7 +1602,7 @@ class ListField(Field):
             "Remove `source=` from the field declaration."
         )
 
-        super(ListField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.child.bind(field_name='', parent=self)
         if self.max_length is not None:
             message = self.error_messages['max_length'].format(max_length=self.max_length)
@@ -1655,7 +1632,7 @@ class ListField(Field):
         """
         if html.is_html_input(data):
             data = html.parse_html_list(data, default=[])
-        if isinstance(data, type('')) or isinstance(data, collections.Mapping) or not hasattr(data, '__iter__'):
+        if isinstance(data, (str, Mapping)) or not hasattr(data, '__iter__'):
             self.fail('not_a_list', input_type=type(data).__name__)
         if not self.allow_empty and len(data) == 0:
             self.fail('empty')
@@ -1686,11 +1663,13 @@ class DictField(Field):
     child = _UnvalidatedField()
     initial = {}
     default_error_messages = {
-        'not_a_dict': _('Expected a dictionary of items but got type "{input_type}".')
+        'not_a_dict': _('Expected a dictionary of items but got type "{input_type}".'),
+        'empty': _('This dictionary may not be empty.'),
     }
 
     def __init__(self, *args, **kwargs):
         self.child = kwargs.pop('child', copy.deepcopy(self.child))
+        self.allow_empty = kwargs.pop('allow_empty', True)
 
         assert not inspect.isclass(self.child), '`child` has not been instantiated.'
         assert self.child.source is None, (
@@ -1698,7 +1677,7 @@ class DictField(Field):
             "Remove `source=` from the field declaration."
         )
 
-        super(DictField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.child.bind(field_name='', parent=self)
 
     def get_value(self, dictionary):
@@ -1716,14 +1695,14 @@ class DictField(Field):
             data = html.parse_html_dict(data)
         if not isinstance(data, dict):
             self.fail('not_a_dict', input_type=type(data).__name__)
+        if not self.allow_empty and len(data) == 0:
+            self.fail('empty')
+
         return self.run_child_validation(data)
 
     def to_representation(self, value):
-        """
-        List of object instances -> List of dicts of primitive datatypes.
-        """
         return {
-            six.text_type(key): self.child.to_representation(val) if val is not None else None
+            str(key): self.child.to_representation(val) if val is not None else None
             for key, val in value.items()
         }
 
@@ -1732,7 +1711,7 @@ class DictField(Field):
         errors = OrderedDict()
 
         for key, value in data.items():
-            key = six.text_type(key)
+            key = str(key)
 
             try:
                 result[key] = self.child.run_validation(value)
@@ -1748,7 +1727,7 @@ class HStoreField(DictField):
     child = CharField(allow_blank=True, allow_null=True)
 
     def __init__(self, *args, **kwargs):
-        super(HStoreField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         assert isinstance(self.child, CharField), (
             "The `child` argument must be an instance of `CharField`, "
             "as the hstore extension stores values as strings."
@@ -1762,15 +1741,15 @@ class JSONField(Field):
 
     def __init__(self, *args, **kwargs):
         self.binary = kwargs.pop('binary', False)
-        super(JSONField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_value(self, dictionary):
         if html.is_html_input(dictionary) and self.field_name in dictionary:
             # When HTML form input is used, mark up the input
             # as being a JSON string, rather than a JSON primitive.
-            class JSONString(six.text_type):
+            class JSONString(str):
                 def __new__(self, value):
-                    ret = six.text_type.__new__(self, value)
+                    ret = str.__new__(self, value)
                     ret.is_json_string = True
                     return ret
             return JSONString(dictionary[self.field_name])
@@ -1779,8 +1758,8 @@ class JSONField(Field):
     def to_internal_value(self, data):
         try:
             if self.binary or getattr(data, 'is_json_string', False):
-                if isinstance(data, six.binary_type):
-                    data = data.decode('utf-8')
+                if isinstance(data, bytes):
+                    data = data.decode()
                 return json.loads(data)
             else:
                 json.dumps(data)
@@ -1791,10 +1770,7 @@ class JSONField(Field):
     def to_representation(self, value):
         if self.binary:
             value = json.dumps(value)
-            # On python 2.x the return type for json.dumps() is underspecified.
-            # On python 3.x json.dumps() returns unicode strings.
-            if isinstance(value, six.text_type):
-                value = bytes(value.encode('utf-8'))
+            value = value.encode()
         return value
 
 
@@ -1815,7 +1791,7 @@ class ReadOnlyField(Field):
 
     def __init__(self, **kwargs):
         kwargs['read_only'] = True
-        super(ReadOnlyField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def to_representation(self, value):
         return value
@@ -1832,7 +1808,7 @@ class HiddenField(Field):
     def __init__(self, **kwargs):
         assert 'default' in kwargs, 'default is a required argument.'
         kwargs['write_only'] = True
-        super(HiddenField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def get_value(self, dictionary):
         # We always use the default value for `HiddenField`.
@@ -1862,7 +1838,7 @@ class SerializerMethodField(Field):
         self.method_name = method_name
         kwargs['source'] = '*'
         kwargs['read_only'] = True
-        super(SerializerMethodField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def bind(self, field_name, parent):
         # In order to enforce a consistent style, we error if a redundant
@@ -1880,7 +1856,7 @@ class SerializerMethodField(Field):
         if self.method_name is None:
             self.method_name = default_method_name
 
-        super(SerializerMethodField, self).bind(field_name, parent)
+        super().bind(field_name, parent)
 
     def to_representation(self, value):
         method = getattr(self.parent, self.method_name)
@@ -1903,11 +1879,10 @@ class ModelField(Field):
         # The `max_length` option is supported by Django's base `Field` class,
         # so we'd better support it here.
         max_length = kwargs.pop('max_length', None)
-        super(ModelField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         if max_length is not None:
             message = lazy(
-                self.error_messages['max_length'].format,
-                six.text_type)(max_length=self.max_length)
+                self.error_messages['max_length'].format, str)(max_length=self.max_length)
             self.validators.append(
                 MaxLengthValidator(self.max_length, message=message))
 
diff --git a/rest_framework/filters.py b/rest_framework/filters.py
index ab2ce68b4..e3b0468c7 100644
--- a/rest_framework/filters.py
+++ b/rest_framework/filters.py
@@ -2,9 +2,8 @@
 Provides generic filtering backends that can be used to filter the results
 returned by list views.
 """
-from __future__ import unicode_literals
-
 import operator
+import warnings
 from functools import reduce
 
 from django.core.exceptions import ImproperlyConfigured
@@ -12,17 +11,17 @@ from django.db import models
 from django.db.models.constants import LOOKUP_SEP
 from django.db.models.sql.constants import ORDER_PATTERN
 from django.template import loader
-from django.utils import six
 from django.utils.encoding import force_text
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
+from rest_framework import RemovedInDRF310Warning
 from rest_framework.compat import (
     coreapi, coreschema, distinct, is_guardian_installed
 )
 from rest_framework.settings import api_settings
 
 
-class BaseFilterBackend(object):
+class BaseFilterBackend:
     """
     A base class from which all filter backend classes should inherit.
     """
@@ -38,6 +37,9 @@ class BaseFilterBackend(object):
         assert coreschema is not None, 'coreschema must be installed to use `get_schema_fields()`'
         return []
 
+    def get_schema_operation_parameters(self, view):
+        return []
+
 
 class SearchFilter(BaseFilterBackend):
     # The URL query parameter used for the search.
@@ -52,6 +54,14 @@ class SearchFilter(BaseFilterBackend):
     search_title = _('Search')
     search_description = _('A search term.')
 
+    def get_search_fields(self, view, request):
+        """
+        Search fields are obtained from the view, but the request is always
+        passed to this method. Sub-classes can override this method to
+        dynamically change the search fields based on request content.
+        """
+        return getattr(view, 'search_fields', None)
+
     def get_search_terms(self, request):
         """
         Search terms are set by a ?search=... query parameter,
@@ -76,6 +86,9 @@ class SearchFilter(BaseFilterBackend):
             opts = queryset.model._meta
             if search_field[0] in self.lookup_prefixes:
                 search_field = search_field[1:]
+            # Annotated fields do not need to be distinct
+            if isinstance(queryset, models.QuerySet) and search_field in queryset.query.annotations:
+                return False
             parts = search_field.split(LOOKUP_SEP)
             for part in parts:
                 field = opts.get_field(part)
@@ -89,14 +102,14 @@ class SearchFilter(BaseFilterBackend):
         return False
 
     def filter_queryset(self, request, queryset, view):
-        search_fields = getattr(view, 'search_fields', None)
+        search_fields = self.get_search_fields(view, request)
         search_terms = self.get_search_terms(request)
 
         if not search_fields or not search_terms:
             return queryset
 
         orm_lookups = [
-            self.construct_search(six.text_type(search_field))
+            self.construct_search(str(search_field))
             for search_field in search_fields
         ]
 
@@ -146,6 +159,19 @@ class SearchFilter(BaseFilterBackend):
             )
         ]
 
+    def get_schema_operation_parameters(self, view):
+        return [
+            {
+                'name': self.search_param,
+                'required': False,
+                'in': 'query',
+                'description': force_text(self.search_description),
+                'schema': {
+                    'type': 'string',
+                },
+            },
+        ]
+
 
 class OrderingFilter(BaseFilterBackend):
     # The URL query parameter used for the ordering.
@@ -175,7 +201,7 @@ class OrderingFilter(BaseFilterBackend):
 
     def get_default_ordering(self, view):
         ordering = getattr(view, 'ordering', None)
-        if isinstance(ordering, six.string_types):
+        if isinstance(ordering, str):
             return (ordering,)
         return ordering
 
@@ -224,7 +250,7 @@ class OrderingFilter(BaseFilterBackend):
             ]
         else:
             valid_fields = [
-                (item, item) if isinstance(item, six.string_types) else item
+                (item, item) if isinstance(item, str) else item
                 for item in valid_fields
             ]
 
@@ -277,6 +303,19 @@ class OrderingFilter(BaseFilterBackend):
             )
         ]
 
+    def get_schema_operation_parameters(self, view):
+        return [
+            {
+                'name': self.ordering_param,
+                'required': False,
+                'in': 'query',
+                'description': force_text(self.ordering_description),
+                'schema': {
+                    'type': 'string',
+                },
+            },
+        ]
+
 
 class DjangoObjectPermissionsFilter(BaseFilterBackend):
     """
@@ -284,6 +323,11 @@ class DjangoObjectPermissionsFilter(BaseFilterBackend):
     has read object level permissions.
     """
     def __init__(self):
+        warnings.warn(
+            "`DjangoObjectPermissionsFilter` has been deprecated and moved to "
+            "the 3rd-party django-rest-framework-guardian package.",
+            RemovedInDRF310Warning, stacklevel=2
+        )
         assert is_guardian_installed(), 'Using DjangoObjectPermissionsFilter, but django-guardian is not installed'
 
     perm_format = '%(app_label)s.view_%(model_name)s'
diff --git a/rest_framework/generics.py b/rest_framework/generics.py
index 8d0bf284a..c39b02ab7 100644
--- a/rest_framework/generics.py
+++ b/rest_framework/generics.py
@@ -1,8 +1,6 @@
 """
 Generic views that provide commonly needed behaviour.
 """
-from __future__ import unicode_literals
-
 from django.core.exceptions import ValidationError
 from django.db.models.query import QuerySet
 from django.http import Http404
diff --git a/rest_framework/management/__init__.py b/rest_framework/management/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/rest_framework/management/commands/__init__.py b/rest_framework/management/commands/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/rest_framework/management/commands/generateschema.py b/rest_framework/management/commands/generateschema.py
new file mode 100644
index 000000000..631f40290
--- /dev/null
+++ b/rest_framework/management/commands/generateschema.py
@@ -0,0 +1,56 @@
+from django.core.management.base import BaseCommand
+
+from rest_framework import renderers
+from rest_framework.schemas import coreapi
+from rest_framework.schemas.openapi import SchemaGenerator
+
+OPENAPI_MODE = 'openapi'
+COREAPI_MODE = 'coreapi'
+
+
+class Command(BaseCommand):
+    help = "Generates configured API schema for project."
+
+    def get_mode(self):
+        return COREAPI_MODE if coreapi.is_enabled() else OPENAPI_MODE
+
+    def add_arguments(self, parser):
+        parser.add_argument('--title', dest="title", default='', type=str)
+        parser.add_argument('--url', dest="url", default=None, type=str)
+        parser.add_argument('--description', dest="description", default=None, type=str)
+        if self.get_mode() == COREAPI_MODE:
+            parser.add_argument('--format', dest="format", choices=['openapi', 'openapi-json', 'corejson'], default='openapi', type=str)
+        else:
+            parser.add_argument('--format', dest="format", choices=['openapi', 'openapi-json'], default='openapi', type=str)
+
+    def handle(self, *args, **options):
+        generator_class = self.get_generator_class()
+        generator = generator_class(
+            url=options['url'],
+            title=options['title'],
+            description=options['description']
+        )
+        schema = generator.get_schema(request=None, public=True)
+        renderer = self.get_renderer(options['format'])
+        output = renderer.render(schema, renderer_context={})
+        self.stdout.write(output.decode())
+
+    def get_renderer(self, format):
+        if self.get_mode() == COREAPI_MODE:
+            renderer_cls = {
+                'corejson': renderers.CoreJSONRenderer,
+                'openapi': renderers.CoreAPIOpenAPIRenderer,
+                'openapi-json': renderers.CoreAPIJSONOpenAPIRenderer,
+            }[format]
+            return renderer_cls()
+
+        renderer_cls = {
+            'openapi': renderers.OpenAPIRenderer,
+            'openapi-json': renderers.JSONOpenAPIRenderer,
+        }[format]
+        return renderer_cls()
+
+    def get_generator_class(self):
+        if self.get_mode() == COREAPI_MODE:
+            return coreapi.SchemaGenerator
+        return SchemaGenerator
diff --git a/rest_framework/metadata.py b/rest_framework/metadata.py
index 9f9324469..42442f91c 100644
--- a/rest_framework/metadata.py
+++ b/rest_framework/metadata.py
@@ -6,8 +6,6 @@ some fairly ad-hoc information about the view.
 Future implementations might use JSON schema or other definitions in order
 to return this information in a more standardized way.
 """
-from __future__ import unicode_literals
-
 from collections import OrderedDict
 
 from django.core.exceptions import PermissionDenied
@@ -19,7 +17,7 @@ from rest_framework.request import clone_request
 from rest_framework.utils.field_mapping import ClassLookupDict
 
 
-class BaseMetadata(object):
+class BaseMetadata:
     def determine_metadata(self, request, view):
         """
         Return a dictionary of metadata about the view.
diff --git a/rest_framework/mixins.py b/rest_framework/mixins.py
index de10d6930..7fa8947cb 100644
--- a/rest_framework/mixins.py
+++ b/rest_framework/mixins.py
@@ -4,14 +4,12 @@ Basic building blocks for generic class based views.
 We don't bind behaviour to http method handlers yet,
 which allows mixin classes to be composed in interesting ways.
 """
-from __future__ import unicode_literals
-
 from rest_framework import status
 from rest_framework.response import Response
 from rest_framework.settings import api_settings
 
 
-class CreateModelMixin(object):
+class CreateModelMixin:
     """
     Create a model instance.
     """
@@ -32,7 +30,7 @@ class CreateModelMixin(object):
             return {}
 
 
-class ListModelMixin(object):
+class ListModelMixin:
     """
     List a queryset.
     """
@@ -48,7 +46,7 @@ class ListModelMixin(object):
         return Response(serializer.data)
 
 
-class RetrieveModelMixin(object):
+class RetrieveModelMixin:
     """
     Retrieve a model instance.
     """
@@ -58,7 +56,7 @@ class RetrieveModelMixin(object):
         return Response(serializer.data)
 
 
-class UpdateModelMixin(object):
+class UpdateModelMixin:
     """
     Update a model instance.
     """
@@ -84,7 +82,7 @@ class UpdateModelMixin(object):
         return self.update(request, *args, **kwargs)
 
 
-class DestroyModelMixin(object):
+class DestroyModelMixin:
     """
     Destroy a model instance.
     """
diff --git a/rest_framework/negotiation.py b/rest_framework/negotiation.py
index ca1b59f12..76113a827 100644
--- a/rest_framework/negotiation.py
+++ b/rest_framework/negotiation.py
@@ -2,8 +2,6 @@
 Content negotiation deals with selecting an appropriate renderer given the
 incoming request.  Typically this will be based on the request's Accept header.
 """
-from __future__ import unicode_literals
-
 from django.http import Http404
 
 from rest_framework import HTTP_HEADER_ENCODING, exceptions
@@ -13,7 +11,7 @@ from rest_framework.utils.mediatypes import (
 )
 
 
-class BaseContentNegotiation(object):
+class BaseContentNegotiation:
     def select_parser(self, request, parsers):
         raise NotImplementedError('.select_parser() must be implemented')
 
@@ -66,7 +64,7 @@ class DefaultContentNegotiation(BaseContentNegotiation):
                             # Accepted media type is 'application/json'
                             full_media_type = ';'.join(
                                 (renderer.media_type,) +
-                                tuple('{0}={1}'.format(
+                                tuple('{}={}'.format(
                                     key, value.decode(HTTP_HEADER_ENCODING))
                                     for key, value in media_type_wrapper.params.items()))
                             return renderer, full_media_type
diff --git a/rest_framework/pagination.py b/rest_framework/pagination.py
index c3494e3c5..38d6b9e1c 100644
--- a/rest_framework/pagination.py
+++ b/rest_framework/pagination.py
@@ -1,20 +1,16 @@
-# coding: utf-8
 """
 Pagination serializers determine the structure of the output that should
 be used for paginated responses.
 """
-from __future__ import unicode_literals
-
 from base64 import b64decode, b64encode
 from collections import OrderedDict, namedtuple
+from urllib import parse
 
 from django.core.paginator import InvalidPage
 from django.core.paginator import Paginator as DjangoPaginator
 from django.template import loader
-from django.utils import six
 from django.utils.encoding import force_text
-from django.utils.six.moves.urllib import parse as urlparse
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework.compat import coreapi, coreschema
 from rest_framework.exceptions import NotFound
@@ -133,7 +129,7 @@ PageLink = namedtuple('PageLink', ['url', 'number', 'is_active', 'is_break'])
 PAGE_BREAK = PageLink(url=None, number=None, is_active=False, is_break=True)
 
 
-class BasePagination(object):
+class BasePagination:
     display_page_controls = False
 
     def paginate_queryset(self, queryset, request, view=None):  # pragma: no cover
@@ -152,6 +148,9 @@ class BasePagination(object):
         assert coreapi is not None, 'coreapi must be installed to use `get_schema_fields()`'
         return []
 
+    def get_schema_operation_parameters(self, view):
+        return []
+
 
 class PageNumberPagination(BasePagination):
     """
@@ -204,7 +203,7 @@ class PageNumberPagination(BasePagination):
             self.page = paginator.page(page_number)
         except InvalidPage as exc:
             msg = self.invalid_page_message.format(
-                page_number=page_number, message=six.text_type(exc)
+                page_number=page_number, message=str(exc)
             )
             raise NotFound(msg)
 
@@ -305,6 +304,32 @@ class PageNumberPagination(BasePagination):
             )
         return fields
 
+    def get_schema_operation_parameters(self, view):
+        parameters = [
+            {
+                'name': self.page_query_param,
+                'required': False,
+                'in': 'query',
+                'description': force_text(self.page_query_description),
+                'schema': {
+                    'type': 'integer',
+                },
+            },
+        ]
+        if self.page_size_query_param is not None:
+            parameters.append(
+                {
+                    'name': self.page_size_query_param,
+                    'required': False,
+                    'in': 'query',
+                    'description': force_text(self.page_size_query_description),
+                    'schema': {
+                        'type': 'integer',
+                    },
+                },
+            )
+        return parameters
+
 
 class LimitOffsetPagination(BasePagination):
     """
@@ -434,6 +459,15 @@ class LimitOffsetPagination(BasePagination):
         context = self.get_html_context()
         return template.render(context)
 
+    def get_count(self, queryset):
+        """
+        Determine an object count, supporting either querysets or regular lists.
+        """
+        try:
+            return queryset.count()
+        except (AttributeError, TypeError):
+            return len(queryset)
+
     def get_schema_fields(self, view):
         assert coreapi is not None, 'coreapi must be installed to use `get_schema_fields()`'
         assert coreschema is not None, 'coreschema must be installed to use `get_schema_fields()`'
@@ -458,21 +492,35 @@ class LimitOffsetPagination(BasePagination):
             )
         ]
 
-    def get_count(self, queryset):
-        """
-        Determine an object count, supporting either querysets or regular lists.
-        """
-        try:
-            return queryset.count()
-        except (AttributeError, TypeError):
-            return len(queryset)
+    def get_schema_operation_parameters(self, view):
+        parameters = [
+            {
+                'name': self.limit_query_param,
+                'required': False,
+                'in': 'query',
+                'description': force_text(self.limit_query_description),
+                'schema': {
+                    'type': 'integer',
+                },
+            },
+            {
+                'name': self.offset_query_param,
+                'required': False,
+                'in': 'query',
+                'description': force_text(self.offset_query_description),
+                'schema': {
+                    'type': 'integer',
+                },
+            },
+        ]
+        return parameters
 
 
 class CursorPagination(BasePagination):
     """
     The cursor pagination implementation is necessarily complex.
     For an overview of the position/offset style we use, see this post:
-    http://cra.mr/2011/03/08/building-cursors-for-the-disqus-api
+    https://cra.mr/2011/03/08/building-cursors-for-the-disqus-api
     """
     cursor_query_param = 'cursor'
     cursor_query_description = _('The pagination cursor value.')
@@ -716,13 +764,13 @@ class CursorPagination(BasePagination):
                 'nearly-unique field on the model, such as "-created" or "pk".'
             )
 
-        assert isinstance(ordering, (six.string_types, list, tuple)), (
+        assert isinstance(ordering, (str, list, tuple)), (
             'Invalid ordering. Expected string or tuple, but got {type}'.format(
                 type=type(ordering).__name__
             )
         )
 
-        if isinstance(ordering, six.string_types):
+        if isinstance(ordering, str):
             return (ordering,)
         return tuple(ordering)
 
@@ -737,7 +785,7 @@ class CursorPagination(BasePagination):
 
         try:
             querystring = b64decode(encoded.encode('ascii')).decode('ascii')
-            tokens = urlparse.parse_qs(querystring, keep_blank_values=True)
+            tokens = parse.parse_qs(querystring, keep_blank_values=True)
 
             offset = tokens.get('o', ['0'])[0]
             offset = _positive_int(offset, cutoff=self.offset_cutoff)
@@ -763,7 +811,7 @@ class CursorPagination(BasePagination):
         if cursor.position is not None:
             tokens['p'] = cursor.position
 
-        querystring = urlparse.urlencode(tokens, doseq=True)
+        querystring = parse.urlencode(tokens, doseq=True)
         encoded = b64encode(querystring.encode('ascii')).decode('ascii')
         return replace_query_param(self.base_url, self.cursor_query_param, encoded)
 
@@ -773,7 +821,7 @@ class CursorPagination(BasePagination):
             attr = instance[field_name]
         else:
             attr = getattr(instance, field_name)
-        return six.text_type(attr)
+        return str(attr)
 
     def get_paginated_response(self, data):
         return Response(OrderedDict([
@@ -820,3 +868,29 @@ class CursorPagination(BasePagination):
                 )
             )
         return fields
+
+    def get_schema_operation_parameters(self, view):
+        parameters = [
+            {
+                'name': self.cursor_query_param,
+                'required': False,
+                'in': 'query',
+                'description': force_text(self.cursor_query_description),
+                'schema': {
+                    'type': 'integer',
+                },
+            }
+        ]
+        if self.page_size_query_param is not None:
+            parameters.append(
+                {
+                    'name': self.page_size_query_param,
+                    'required': False,
+                    'in': 'query',
+                    'description': force_text(self.page_size_query_description),
+                    'schema': {
+                        'type': 'integer',
+                    },
+                }
+            )
+        return parameters
diff --git a/rest_framework/parsers.py b/rest_framework/parsers.py
index 35d0d1aa7..978576a71 100644
--- a/rest_framework/parsers.py
+++ b/rest_framework/parsers.py
@@ -4,9 +4,8 @@ Parsers are used to parse the content of incoming HTTP requests.
 They give us a generic way of being able to handle various media types
 on the request, such as form content or json encoded data.
 """
-from __future__ import unicode_literals
-
 import codecs
+from urllib import parse
 
 from django.conf import settings
 from django.core.files.uploadhandler import StopFutureHandlers
@@ -15,9 +14,7 @@ from django.http.multipartparser import ChunkIter
 from django.http.multipartparser import \
     MultiPartParser as DjangoMultiPartParser
 from django.http.multipartparser import MultiPartParserError, parse_header
-from django.utils import six
 from django.utils.encoding import force_text
-from django.utils.six.moves.urllib import parse as urlparse
 
 from rest_framework import renderers
 from rest_framework.exceptions import ParseError
@@ -25,13 +22,13 @@ from rest_framework.settings import api_settings
 from rest_framework.utils import json
 
 
-class DataAndFiles(object):
+class DataAndFiles:
     def __init__(self, data, files):
         self.data = data
         self.files = files
 
 
-class BaseParser(object):
+class BaseParser:
     """
     All parsers should extend `BaseParser`, specifying a `media_type`
     attribute, and overriding the `.parse()` method.
@@ -67,7 +64,7 @@ class JSONParser(BaseParser):
             parse_constant = json.strict_constant if self.strict else None
             return json.load(decoded_stream, parse_constant=parse_constant)
         except ValueError as exc:
-            raise ParseError('JSON parse error - %s' % six.text_type(exc))
+            raise ParseError('JSON parse error - %s' % str(exc))
 
 
 class FormParser(BaseParser):
@@ -83,8 +80,7 @@ class FormParser(BaseParser):
         """
         parser_context = parser_context or {}
         encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)
-        data = QueryDict(stream.read(), encoding=encoding)
-        return data
+        return QueryDict(stream.read(), encoding=encoding)
 
 
 class MultiPartParser(BaseParser):
@@ -113,7 +109,7 @@ class MultiPartParser(BaseParser):
             data, files = parser.parse()
             return DataAndFiles(data, files)
         except MultiPartParserError as exc:
-            raise ParseError('Multipart form parse error - %s' % six.text_type(exc))
+            raise ParseError('Multipart form parse error - %s' % str(exc))
 
 
 class FileUploadParser(BaseParser):
@@ -205,7 +201,7 @@ class FileUploadParser(BaseParser):
 
         try:
             meta = parser_context['request'].META
-            disposition = parse_header(meta['HTTP_CONTENT_DISPOSITION'].encode('utf-8'))
+            disposition = parse_header(meta['HTTP_CONTENT_DISPOSITION'].encode())
             filename_parm = disposition[1]
             if 'filename*' in filename_parm:
                 return self.get_encoded_filename(filename_parm)
@@ -221,7 +217,7 @@ class FileUploadParser(BaseParser):
         encoded_filename = force_text(filename_parm['filename*'])
         try:
             charset, lang, filename = encoded_filename.split('\'', 2)
-            filename = urlparse.unquote(filename)
+            filename = parse.unquote(filename)
         except (ValueError, LookupError):
             filename = force_text(filename_parm['filename'])
         return filename
diff --git a/rest_framework/permissions.py b/rest_framework/permissions.py
index a48058e66..3a8c58064 100644
--- a/rest_framework/permissions.py
+++ b/rest_framework/permissions.py
@@ -1,8 +1,6 @@
 """
 Provides a set of pluggable permission policies.
 """
-from __future__ import unicode_literals
-
 from django.http import Http404
 
 from rest_framework import exceptions
@@ -10,7 +8,97 @@ from rest_framework import exceptions
 SAFE_METHODS = ('GET', 'HEAD', 'OPTIONS')
 
 
-class BasePermission(object):
+class OperationHolderMixin:
+    def __and__(self, other):
+        return OperandHolder(AND, self, other)
+
+    def __or__(self, other):
+        return OperandHolder(OR, self, other)
+
+    def __rand__(self, other):
+        return OperandHolder(AND, other, self)
+
+    def __ror__(self, other):
+        return OperandHolder(OR, other, self)
+
+    def __invert__(self):
+        return SingleOperandHolder(NOT, self)
+
+
+class SingleOperandHolder(OperationHolderMixin):
+    def __init__(self, operator_class, op1_class):
+        self.operator_class = operator_class
+        self.op1_class = op1_class
+
+    def __call__(self, *args, **kwargs):
+        op1 = self.op1_class(*args, **kwargs)
+        return self.operator_class(op1)
+
+
+class OperandHolder(OperationHolderMixin):
+    def __init__(self, operator_class, op1_class, op2_class):
+        self.operator_class = operator_class
+        self.op1_class = op1_class
+        self.op2_class = op2_class
+
+    def __call__(self, *args, **kwargs):
+        op1 = self.op1_class(*args, **kwargs)
+        op2 = self.op2_class(*args, **kwargs)
+        return self.operator_class(op1, op2)
+
+
+class AND:
+    def __init__(self, op1, op2):
+        self.op1 = op1
+        self.op2 = op2
+
+    def has_permission(self, request, view):
+        return (
+            self.op1.has_permission(request, view) and
+            self.op2.has_permission(request, view)
+        )
+
+    def has_object_permission(self, request, view, obj):
+        return (
+            self.op1.has_object_permission(request, view, obj) and
+            self.op2.has_object_permission(request, view, obj)
+        )
+
+
+class OR:
+    def __init__(self, op1, op2):
+        self.op1 = op1
+        self.op2 = op2
+
+    def has_permission(self, request, view):
+        return (
+            self.op1.has_permission(request, view) or
+            self.op2.has_permission(request, view)
+        )
+
+    def has_object_permission(self, request, view, obj):
+        return (
+            self.op1.has_object_permission(request, view, obj) or
+            self.op2.has_object_permission(request, view, obj)
+        )
+
+
+class NOT:
+    def __init__(self, op1):
+        self.op1 = op1
+
+    def has_permission(self, request, view):
+        return not self.op1.has_permission(request, view)
+
+    def has_object_permission(self, request, view, obj):
+        return not self.op1.has_object_permission(request, view, obj)
+
+
+class BasePermissionMetaclass(OperationHolderMixin, type):
+    pass
+
+
+class BasePermission(metaclass=BasePermissionMetaclass):
     """
     A base class from which all permission classes should inherit.
     """
@@ -46,7 +134,7 @@ class IsAuthenticated(BasePermission):
     """
 
     def has_permission(self, request, view):
-        return request.user and request.user.is_authenticated
+        return bool(request.user and request.user.is_authenticated)
 
 
 class IsAdminUser(BasePermission):
@@ -55,7 +143,7 @@ class IsAdminUser(BasePermission):
     """
 
     def has_permission(self, request, view):
-        return request.user and request.user.is_staff
+        return bool(request.user and request.user.is_staff)
 
 
 class IsAuthenticatedOrReadOnly(BasePermission):
@@ -64,7 +152,7 @@ class IsAuthenticatedOrReadOnly(BasePermission):
     """
 
     def has_permission(self, request, view):
-        return (
+        return bool(
             request.method in SAFE_METHODS or
             request.user and
             request.user.is_authenticated
diff --git a/rest_framework/relations.py b/rest_framework/relations.py
index e8a4ec2ac..3c2132c5b 100644
--- a/rest_framework/relations.py
+++ b/rest_framework/relations.py
@@ -1,19 +1,13 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import sys
 from collections import OrderedDict
+from urllib import parse
 
 from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
 from django.db.models import Manager
 from django.db.models.query import QuerySet
 from django.urls import NoReverseMatch, Resolver404, get_script_prefix, resolve
-from django.utils import six
-from django.utils.encoding import (
-    python_2_unicode_compatible, smart_text, uri_to_iri
-)
-from django.utils.six.moves.urllib import parse as urlparse
-from django.utils.translation import ugettext_lazy as _
+from django.utils.encoding import smart_text, uri_to_iri
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework.fields import (
     Field, empty, get_attribute, is_simple_callable, iter_options
@@ -46,14 +40,14 @@ class ObjectTypeError(TypeError):
     """
 
 
-class Hyperlink(six.text_type):
+class Hyperlink(str):
     """
     A string like object that additionally has an associated name.
     We use this for hyperlinked URLs that may render as a named link
     in some contexts, or render as a plain URL in others.
     """
     def __new__(self, url, obj):
-        ret = six.text_type.__new__(self, url)
+        ret = str.__new__(self, url)
         ret.obj = obj
         return ret
 
@@ -65,13 +59,12 @@ class Hyperlink(six.text_type):
         # This ensures that we only called `__str__` lazily,
         # as in some cases calling __str__ on a model instances *might*
         # involve a database lookup.
-        return six.text_type(self.obj)
+        return str(self.obj)
 
     is_hyperlink = True
 
 
-@python_2_unicode_compatible
-class PKOnlyObject(object):
+class PKOnlyObject:
     """
     This is a mock object, used for when we only need the pk of the object
     instance, but still want to return an object with a .pk attribute,
@@ -121,14 +114,14 @@ class RelatedField(Field):
         )
         kwargs.pop('many', None)
         kwargs.pop('allow_empty', None)
-        super(RelatedField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def __new__(cls, *args, **kwargs):
         # We override this method in order to automagically create
         # `ManyRelatedField` classes instead when `many=True` is set.
         if kwargs.pop('many', False):
             return cls.many_init(*args, **kwargs)
-        return super(RelatedField, cls).__new__(cls, *args, **kwargs)
+        return super().__new__(cls, *args, **kwargs)
 
     @classmethod
     def many_init(cls, *args, **kwargs):
@@ -157,7 +150,7 @@ class RelatedField(Field):
         # We force empty strings to None values for relational fields.
         if data == '':
             data = None
-        return super(RelatedField, self).run_validation(data)
+        return super().run_validation(data)
 
     def get_queryset(self):
         queryset = self.queryset
@@ -189,7 +182,7 @@ class RelatedField(Field):
                 pass
 
         # Standard case, return the object instance.
-        return super(RelatedField, self).get_attribute(instance)
+        return super().get_attribute(instance)
 
     def get_choices(self, cutoff=None):
         queryset = self.get_queryset()
@@ -225,7 +218,7 @@ class RelatedField(Field):
         )
 
     def display_value(self, instance):
-        return six.text_type(instance)
+        return str(instance)
 
 
 class StringRelatedField(RelatedField):
@@ -236,10 +229,10 @@ class StringRelatedField(RelatedField):
 
     def __init__(self, **kwargs):
         kwargs['read_only'] = True
-        super(StringRelatedField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def to_representation(self, value):
-        return six.text_type(value)
+        return str(value)
 
 
 class PrimaryKeyRelatedField(RelatedField):
@@ -251,7 +244,7 @@ class PrimaryKeyRelatedField(RelatedField):
 
     def __init__(self, **kwargs):
         self.pk_field = kwargs.pop('pk_field', None)
-        super(PrimaryKeyRelatedField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def use_pk_only_optimization(self):
         return True
@@ -297,7 +290,7 @@ class HyperlinkedRelatedField(RelatedField):
         # implicit `self` argument to be passed.
         self.reverse = reverse
 
-        super(HyperlinkedRelatedField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def use_pk_only_optimization(self):
         return self.lookup_field == 'pk'
@@ -317,10 +310,10 @@ class HyperlinkedRelatedField(RelatedField):
             return queryset.get(**lookup_kwargs)
         except ValueError:
             exc = ObjectValueError(str(sys.exc_info()[1]))
-            six.reraise(type(exc), exc, sys.exc_info()[2])
+            raise exc.with_traceback(sys.exc_info()[2])
         except TypeError:
             exc = ObjectTypeError(str(sys.exc_info()[1]))
-            six.reraise(type(exc), exc, sys.exc_info()[2])
+            raise exc.with_traceback(sys.exc_info()[2])
 
     def get_url(self, obj, view_name, request, format):
         """
@@ -346,7 +339,7 @@ class HyperlinkedRelatedField(RelatedField):
 
         if http_prefix:
             # If needed convert absolute URLs to relative path
-            data = urlparse.urlparse(data).path
+            data = parse.urlparse(data).path
             prefix = get_script_prefix()
             if data.startswith(prefix):
                 data = '/' + data[len(prefix):]
@@ -432,7 +425,7 @@ class HyperlinkedIdentityField(HyperlinkedRelatedField):
         assert view_name is not None, 'The `view_name` argument is required.'
         kwargs['read_only'] = True
         kwargs['source'] = '*'
-        super(HyperlinkedIdentityField, self).__init__(view_name, **kwargs)
+        super().__init__(view_name, **kwargs)
 
     def use_pk_only_optimization(self):
         # We have the complete object instance already. We don't need
@@ -453,7 +446,7 @@ class SlugRelatedField(RelatedField):
     def __init__(self, slug_field=None, **kwargs):
         assert slug_field is not None, 'The `slug_field` argument is required.'
         self.slug_field = slug_field
-        super(SlugRelatedField, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def to_internal_value(self, data):
         try:
@@ -502,7 +495,7 @@ class ManyRelatedField(Field):
             self.html_cutoff_text or _(api_settings.HTML_SELECT_CUTOFF_TEXT)
         )
         assert child_relation is not None, '`child_relation` is a required argument.'
-        super(ManyRelatedField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.child_relation.bind(field_name='', parent=self)
 
     def get_value(self, dictionary):
@@ -518,7 +511,7 @@ class ManyRelatedField(Field):
         return dictionary.get(self.field_name, empty)
 
     def to_internal_value(self, data):
-        if isinstance(data, type('')) or not hasattr(data, '__iter__'):
+        if isinstance(data, str) or not hasattr(data, '__iter__'):
             self.fail('not_a_list', input_type=type(data).__name__)
         if not self.allow_empty and len(data) == 0:
             self.fail('empty')
diff --git a/rest_framework/renderers.py b/rest_framework/renderers.py
index a9645cc89..2a4ae5905 100644
--- a/rest_framework/renderers.py
+++ b/rest_framework/renderers.py
@@ -6,10 +6,9 @@ on the response, such as JSON encoded data or HTML output.
 
 REST framework also provides an HTML renderer that renders the browsable API.
 """
-from __future__ import unicode_literals
-
 import base64
 from collections import OrderedDict
+from urllib import parse
 
 from django import forms
 from django.conf import settings
@@ -19,13 +18,12 @@ from django.http.multipartparser import parse_header
 from django.template import engines, loader
 from django.test.client import encode_multipart
 from django.urls import NoReverseMatch
-from django.utils import six
 from django.utils.html import mark_safe
 
 from rest_framework import VERSION, exceptions, serializers, status
 from rest_framework.compat import (
-    INDENT_SEPARATORS, LONG_SEPARATORS, SHORT_SEPARATORS, coreapi,
-    pygments_css
+    INDENT_SEPARATORS, LONG_SEPARATORS, SHORT_SEPARATORS, coreapi, coreschema,
+    pygments_css, yaml
 )
 from rest_framework.exceptions import ParseError
 from rest_framework.request import is_form_media_type, override_method
@@ -39,7 +37,7 @@ def zero_as_none(value):
     return None if value == 0 else value
 
 
-class BaseRenderer(object):
+class BaseRenderer:
     """
     All renderers should extend this class, setting the `media_type`
     and `format` attributes, and override the `.render()` method.
@@ -106,18 +104,11 @@ class JSONRenderer(BaseRenderer):
             allow_nan=not self.strict, separators=separators
         )
 
-        # On python 2.x json.dumps() returns bytestrings if ensure_ascii=True,
-        # but if ensure_ascii=False, the return type is underspecified,
-        # and may (or may not) be unicode.
-        # On python 3.x json.dumps() returns unicode strings.
-        if isinstance(ret, six.text_type):
-            # We always fully escape \u2028 and \u2029 to ensure we output JSON
-            # that is a strict javascript subset. If bytes were returned
-            # by json.dumps() then we don't have these characters in any case.
-            # See: http://timelessrepo.com/json-isnt-a-javascript-subset
-            ret = ret.replace('\u2028', '\\u2028').replace('\u2029', '\\u2029')
-            return bytes(ret.encode('utf-8'))
-        return ret
+        # We always fully escape \u2028 and \u2029 to ensure we output JSON
+        # that is a strict javascript subset.
+        # See: http://timelessrepo.com/json-isnt-a-javascript-subset
+        ret = ret.replace('\u2028', '\\u2028').replace('\u2029', '\\u2029')
+        return ret.encode()
 
 
 class TemplateHTMLRenderer(BaseRenderer):
@@ -348,7 +339,7 @@ class HTMLFormRenderer(BaseRenderer):
         # Get a clone of the field with text-only value representation.
         field = field.as_form_field()
 
-        if style.get('input_type') == 'datetime-local' and isinstance(field.value, six.text_type):
+        if style.get('input_type') == 'datetime-local' and isinstance(field.value, str):
             field.value = field.value.rstrip('Z')
 
         if 'template' in style:
@@ -576,7 +567,7 @@ class BrowsableAPIRenderer(BaseRenderer):
                         data.pop(name, None)
                 content = renderer.render(data, accepted, context)
                 # Renders returns bytes, but CharField expects a str.
-                content = content.decode('utf-8')
+                content = content.decode()
             else:
                 content = None
 
@@ -683,7 +674,7 @@ class BrowsableAPIRenderer(BaseRenderer):
             csrf_header_name = csrf_header_name[5:]
         csrf_header_name = csrf_header_name.replace('_', '-')
 
-        context = {
+        return {
             'content': self.get_content(renderer, data, accepted_media_type, renderer_context),
             'code_style': pygments_css(self.code_style),
             'view': view,
@@ -719,7 +710,6 @@ class BrowsableAPIRenderer(BaseRenderer):
             'csrf_cookie_name': csrf_cookie_name,
             'csrf_header_name': csrf_header_name
         }
-        return context
 
     def render(self, data, accepted_media_type=None, renderer_context=None):
         """
@@ -790,7 +780,7 @@ class AdminRenderer(BrowsableAPIRenderer):
         """
         Render the HTML for the browsable API representation.
         """
-        context = super(AdminRenderer, self).get_context(
+        context = super().get_context(
             data, accepted_media_type, renderer_context
         )
 
@@ -932,3 +922,140 @@ class CoreJSONRenderer(BaseRenderer):
         indent = bool(renderer_context.get('indent', 0))
         codec = coreapi.codecs.CoreJSONCodec()
         return codec.dump(data, indent=indent)
+
+
+class _BaseOpenAPIRenderer:
+    def get_schema(self, instance):
+        CLASS_TO_TYPENAME = {
+            coreschema.Object: 'object',
+            coreschema.Array: 'array',
+            coreschema.Number: 'number',
+            coreschema.Integer: 'integer',
+            coreschema.String: 'string',
+            coreschema.Boolean: 'boolean',
+        }
+
+        schema = {}
+        if instance.__class__ in CLASS_TO_TYPENAME:
+            schema['type'] = CLASS_TO_TYPENAME[instance.__class__]
+        schema['title'] = instance.title
+        schema['description'] = instance.description
+        if hasattr(instance, 'enum'):
+            schema['enum'] = instance.enum
+        return schema
+
+    def get_parameters(self, link):
+        parameters = []
+        for field in link.fields:
+            if field.location not in ['path', 'query']:
+                continue
+            parameter = {
+                'name': field.name,
+                'in': field.location,
+            }
+            if field.required:
+                parameter['required'] = True
+            if field.description:
+                parameter['description'] = field.description
+            if field.schema:
+                parameter['schema'] = self.get_schema(field.schema)
+            parameters.append(parameter)
+        return parameters
+
+    def get_operation(self, link, name, tag):
+        operation_id = "%s_%s" % (tag, name) if tag else name
+        parameters = self.get_parameters(link)
+
+        operation = {
+            'operationId': operation_id,
+        }
+        if link.title:
+            operation['summary'] = link.title
+        if link.description:
+            operation['description'] = link.description
+        if parameters:
+            operation['parameters'] = parameters
+        if tag:
+            operation['tags'] = [tag]
+        return operation
+
+    def get_paths(self, document):
+        paths = {}
+
+        tag = None
+        for name, link in document.links.items():
+            path = parse.urlparse(link.url).path
+            method = link.action.lower()
+            paths.setdefault(path, {})
+            paths[path][method] = self.get_operation(link, name, tag=tag)
+
+        for tag, section in document.data.items():
+            for name, link in section.links.items():
+                path = parse.urlparse(link.url).path
+                method = link.action.lower()
+                paths.setdefault(path, {})
+                paths[path][method] = self.get_operation(link, name, tag=tag)
+
+        return paths
+
+    def get_structure(self, data):
+        return {
+            'openapi': '3.0.0',
+            'info': {
+                'version': '',
+                'title': data.title,
+                'description': data.description
+            },
+            'servers': [{
+                'url': data.url
+            }],
+            'paths': self.get_paths(data)
+        }
+
+
+class CoreAPIOpenAPIRenderer(_BaseOpenAPIRenderer):
+    media_type = 'application/vnd.oai.openapi'
+    charset = None
+    format = 'openapi'
+
+    def __init__(self):
+        assert coreapi, 'Using CoreAPIOpenAPIRenderer, but `coreapi` is not installed.'
+        assert yaml, 'Using CoreAPIOpenAPIRenderer, but `pyyaml` is not installed.'
+
+    def render(self, data, media_type=None, renderer_context=None):
+        structure = self.get_structure(data)
+        return yaml.dump(structure, default_flow_style=False).encode()
+
+
+class CoreAPIJSONOpenAPIRenderer(_BaseOpenAPIRenderer):
+    media_type = 'application/vnd.oai.openapi+json'
+    charset = None
+    format = 'openapi-json'
+
+    def __init__(self):
+        assert coreapi, 'Using CoreAPIJSONOpenAPIRenderer, but `coreapi` is not installed.'
+
+    def render(self, data, media_type=None, renderer_context=None):
+        structure = self.get_structure(data)
+        return json.dumps(structure, indent=4).encode('utf-8')
+
+
+class OpenAPIRenderer(BaseRenderer):
+    media_type = 'application/vnd.oai.openapi'
+    charset = None
+    format = 'openapi'
+
+    def __init__(self):
+        assert yaml, 'Using OpenAPIRenderer, but `pyyaml` is not installed.'
+
+    def render(self, data, media_type=None, renderer_context=None):
+        return yaml.dump(data, default_flow_style=False).encode('utf-8')
+
+
+class JSONOpenAPIRenderer(BaseRenderer):
+    media_type = 'application/vnd.oai.openapi+json'
+    charset = None
+    format = 'openapi-json'
+
+    def render(self, data, media_type=None, renderer_context=None):
+        return json.dumps(data, indent=2).encode('utf-8')
diff --git a/rest_framework/request.py b/rest_framework/request.py
index 9d4f73d30..ec4b749c2 100644
--- a/rest_framework/request.py
+++ b/rest_framework/request.py
@@ -8,8 +8,7 @@ The wrapped request then offers a richer API, in particular :
     - full support of PUT method, including support for file uploads
     - form overloading of HTTP method, content type and content
 """
-from __future__ import unicode_literals
-
+import io
 import sys
 from contextlib import contextmanager
 
@@ -17,7 +16,6 @@ from django.conf import settings
 from django.http import HttpRequest, QueryDict
 from django.http.multipartparser import parse_header
 from django.http.request import RawPostDataException
-from django.utils import six
 from django.utils.datastructures import MultiValueDict
 
 from rest_framework import HTTP_HEADER_ENCODING, exceptions
@@ -33,7 +31,7 @@ def is_form_media_type(media_type):
             base_media_type == 'multipart/form-data')
 
 
-class override_method(object):
+class override_method:
     """
     A context manager that temporarily overrides the method on a request,
     additionally setting the `view.request` attribute.
@@ -77,10 +75,10 @@ def wrap_attributeerrors():
     except AttributeError:
         info = sys.exc_info()
         exc = WrappedAttributeError(str(info[1]))
-        six.reraise(type(exc), exc, info[2])
+        raise exc.with_traceback(info[2])
 
 
-class Empty(object):
+class Empty:
     """
     Placeholder for unset attributes.
     Cannot use `None`, as that may be a valid value.
@@ -125,7 +123,7 @@ def clone_request(request, method):
     return ret
 
 
-class ForcedAuthentication(object):
+class ForcedAuthentication:
     """
     This authentication class is used if the test client or request factory
     forcibly authenticated the request.
@@ -139,7 +137,7 @@ class ForcedAuthentication(object):
         return (self.force_user, self.force_token)
 
 
-class Request(object):
+class Request:
     """
     Wrapper allowing to enhance a standard `HttpRequest` instance.
 
@@ -301,7 +299,7 @@ class Request(object):
         elif not self._request._read_started:
             self._stream = self._request
         else:
-            self._stream = six.BytesIO(self.body)
+            self._stream = io.BytesIO(self.body)
 
     def _supports_form_parsing(self):
         """
diff --git a/rest_framework/response.py b/rest_framework/response.py
index bf0663255..db7977770 100644
--- a/rest_framework/response.py
+++ b/rest_framework/response.py
@@ -4,11 +4,9 @@ it is initialized with unrendered data, instead of a pre-rendered string.
 
 The appropriate renderer is called during Django's template response rendering.
 """
-from __future__ import unicode_literals
+from http.client import responses
 
 from django.template.response import SimpleTemplateResponse
-from django.utils import six
-from django.utils.six.moves.http_client import responses
 
 from rest_framework.serializers import Serializer
 
@@ -29,7 +27,7 @@ class Response(SimpleTemplateResponse):
         Setting 'renderer' and 'media_type' will typically be deferred,
         For example being set automatically by the `APIView`.
         """
-        super(Response, self).__init__(None, status=status)
+        super().__init__(None, status=status)
 
         if isinstance(data, Serializer):
             msg = (
@@ -45,7 +43,7 @@ class Response(SimpleTemplateResponse):
         self.content_type = content_type
 
         if headers:
-            for name, value in six.iteritems(headers):
+            for name, value in headers.items():
                 self[name] = value
 
     @property
@@ -64,13 +62,13 @@ class Response(SimpleTemplateResponse):
         content_type = self.content_type
 
         if content_type is None and charset is not None:
-            content_type = "{0}; charset={1}".format(media_type, charset)
+            content_type = "{}; charset={}".format(media_type, charset)
         elif content_type is None:
             content_type = media_type
         self['Content-Type'] = content_type
 
         ret = renderer.render(self.data, accepted_media_type, context)
-        if isinstance(ret, six.text_type):
+        if isinstance(ret, str):
             assert charset, (
                 'renderer returned unicode, and did not specify '
                 'a charset value.'
@@ -94,7 +92,7 @@ class Response(SimpleTemplateResponse):
         """
         Remove attributes from the response that shouldn't be cached.
         """
-        state = super(Response, self).__getstate__()
+        state = super().__getstate__()
         for key in (
             'accepted_renderer', 'renderer_context', 'resolver_match',
             'client', 'request', 'json', 'wsgi_request'
diff --git a/rest_framework/reverse.py b/rest_framework/reverse.py
index e9cf737f1..55bf74af1 100644
--- a/rest_framework/reverse.py
+++ b/rest_framework/reverse.py
@@ -1,11 +1,8 @@
 """
 Provide urlresolver functions that return fully qualified URLs or view names
 """
-from __future__ import unicode_literals
-
 from django.urls import NoReverseMatch
 from django.urls import reverse as django_reverse
-from django.utils import six
 from django.utils.functional import lazy
 
 from rest_framework.settings import api_settings
@@ -66,4 +63,4 @@ def _reverse(viewname, args=None, kwargs=None, request=None, format=None, **extr
     return url
 
 
-reverse_lazy = lazy(reverse, six.text_type)
+reverse_lazy = lazy(reverse, str)
diff --git a/rest_framework/routers.py b/rest_framework/routers.py
index 392d43f79..9334706f8 100644
--- a/rest_framework/routers.py
+++ b/rest_framework/routers.py
@@ -13,8 +13,6 @@ For example, you might have a `urls.py` that looks something like this:
 
     urlpatterns = router.urls
 """
-from __future__ import unicode_literals
-
 import itertools
 import warnings
 from collections import OrderedDict, namedtuple
@@ -22,10 +20,11 @@ from collections import OrderedDict, namedtuple
 from django.conf.urls import url
 from django.core.exceptions import ImproperlyConfigured
 from django.urls import NoReverseMatch
-from django.utils import six
 from django.utils.deprecation import RenameMethodsBase
 
-from rest_framework import views
+from rest_framework import (
+    RemovedInDRF310Warning, RemovedInDRF311Warning, views
+)
 from rest_framework.response import Response
 from rest_framework.reverse import reverse
 from rest_framework.schemas import SchemaGenerator
@@ -37,24 +36,24 @@ Route = namedtuple('Route', ['url', 'mapping', 'name', 'detail', 'initkwargs'])
 DynamicRoute = namedtuple('DynamicRoute', ['url', 'name', 'detail', 'initkwargs'])
 
 
-class DynamicDetailRoute(object):
+class DynamicDetailRoute:
     def __new__(cls, url, name, initkwargs):
         warnings.warn(
-            "`DynamicDetailRoute` is pending deprecation and will be removed in 3.10 "
+            "`DynamicDetailRoute` is deprecated and will be removed in 3.10 "
             "in favor of `DynamicRoute`, which accepts a `detail` boolean. Use "
             "`DynamicRoute(url, name, True, initkwargs)` instead.",
-            PendingDeprecationWarning, stacklevel=2
+            RemovedInDRF310Warning, stacklevel=2
         )
         return DynamicRoute(url, name, True, initkwargs)
 
 
-class DynamicListRoute(object):
+class DynamicListRoute:
     def __new__(cls, url, name, initkwargs):
         warnings.warn(
-            "`DynamicListRoute` is pending deprecation and will be removed in 3.10 in "
+            "`DynamicListRoute` is deprecated and will be removed in 3.10 in "
             "favor of `DynamicRoute`, which accepts a `detail` boolean. Use "
             "`DynamicRoute(url, name, False, initkwargs)` instead.",
-            PendingDeprecationWarning, stacklevel=2
+            RemovedInDRF310Warning, stacklevel=2
         )
         return DynamicRoute(url, name, False, initkwargs)
 
@@ -77,18 +76,18 @@ def flatten(list_of_lists):
 
 class RenameRouterMethods(RenameMethodsBase):
     renamed_methods = (
-        ('get_default_base_name', 'get_default_basename', DeprecationWarning),
+        ('get_default_base_name', 'get_default_basename', RemovedInDRF311Warning),
     )
 
 
-class BaseRouter(six.with_metaclass(RenameRouterMethods)):
+class BaseRouter(metaclass=RenameRouterMethods):
     def __init__(self):
         self.registry = []
 
     def register(self, prefix, viewset, basename=None, base_name=None):
         if base_name is not None:
-            msg = "The `base_name` argument has been deprecated in favor of `basename`."
-            warnings.warn(msg, DeprecationWarning, 2)
+            msg = "The `base_name` argument is pending deprecation in favor of `basename`."
+            warnings.warn(msg, RemovedInDRF311Warning, 2)
 
         assert not (basename and base_name), (
             "Do not provide both the `basename` and `base_name` arguments.")
@@ -100,6 +99,10 @@ class BaseRouter(six.with_metaclass(RenameRouterMethods)):
             basename = self.get_default_basename(viewset)
         self.registry.append((prefix, viewset, basename))
 
+        # invalidate the urls cache
+        if hasattr(self, '_urls'):
+            del self._urls
+
     def get_default_basename(self, viewset):
         """
         If `basename` is not specified, attempt to automatically determine
@@ -167,7 +170,7 @@ class SimpleRouter(BaseRouter):
 
     def __init__(self, trailing_slash=True):
         self.trailing_slash = '/' if trailing_slash else ''
-        super(SimpleRouter, self).__init__()
+        super().__init__()
 
     def get_default_basename(self, viewset):
         """
@@ -359,7 +362,7 @@ class DefaultRouter(SimpleRouter):
             self.root_renderers = kwargs.pop('root_renderers')
         else:
             self.root_renderers = list(api_settings.DEFAULT_RENDERER_CLASSES)
-        super(DefaultRouter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_api_root_view(self, api_urls=None):
         """
@@ -377,7 +380,7 @@ class DefaultRouter(SimpleRouter):
         Generate the list of URL patterns, including a default root view
         for the API, and appending `.json` style format suffixes.
         """
-        urls = super(DefaultRouter, self).get_urls()
+        urls = super().get_urls()
 
         if self.include_root_view:
             view = self.get_api_root_view(api_urls=urls)
diff --git a/rest_framework/schemas/__init__.py b/rest_framework/schemas/__init__.py
index ba0ec6536..8fdb2d86a 100644
--- a/rest_framework/schemas/__init__.py
+++ b/rest_framework/schemas/__init__.py
@@ -22,24 +22,32 @@ Other access should target the submodules directly
 """
 from rest_framework.settings import api_settings
 
-from .generators import SchemaGenerator
-from .inspectors import AutoSchema, DefaultSchema, ManualSchema  # noqa
+from . import coreapi, openapi
+from .inspectors import DefaultSchema  # noqa
+from .coreapi import AutoSchema, ManualSchema, SchemaGenerator  # noqa
 
 
 def get_schema_view(
         title=None, url=None, description=None, urlconf=None, renderer_classes=None,
-        public=False, patterns=None, generator_class=SchemaGenerator,
+        public=False, patterns=None, generator_class=None,
         authentication_classes=api_settings.DEFAULT_AUTHENTICATION_CLASSES,
         permission_classes=api_settings.DEFAULT_PERMISSION_CLASSES):
     """
     Return a schema view.
     """
-    # Avoid import cycle on APIView
-    from .views import SchemaView
+    if generator_class is None:
+        if coreapi.is_enabled():
+            generator_class = coreapi.SchemaGenerator
+        else:
+            generator_class = openapi.SchemaGenerator
+
     generator = generator_class(
         title=title, url=url, description=description,
         urlconf=urlconf, patterns=patterns,
     )
+
+    # Avoid import cycle on APIView
+    from .views import SchemaView
     return SchemaView.as_view(
         renderer_classes=renderer_classes,
         schema_generator=generator,
diff --git a/rest_framework/schemas/coreapi.py b/rest_framework/schemas/coreapi.py
new file mode 100644
index 000000000..5cf789f9f
--- /dev/null
+++ b/rest_framework/schemas/coreapi.py
@@ -0,0 +1,616 @@
+import re
+import warnings
+from collections import Counter, OrderedDict
+from urllib import parse
+
+from django.db import models
+from django.utils.encoding import force_text, smart_text
+
+from rest_framework import exceptions, serializers
+from rest_framework.compat import coreapi, coreschema, uritemplate
+from rest_framework.settings import api_settings
+from rest_framework.utils import formatting
+
+from .generators import BaseSchemaGenerator
+from .inspectors import ViewInspector
+from .utils import get_pk_description, is_list_view
+
+# Used in _get_description_section()
+# TODO: ???: move up to base.
+header_regex = re.compile('^[a-zA-Z][0-9A-Za-z_]*:')
+
+# Generator #
+# TODO: Pull some of this into base.
+
+
+def is_custom_action(action):
+    return action not in {
+        'retrieve', 'list', 'create', 'update', 'partial_update', 'destroy'
+    }
+
+
+def distribute_links(obj):
+    for key, value in obj.items():
+        distribute_links(value)
+
+    for preferred_key, link in obj.links:
+        key = obj.get_available_key(preferred_key)
+        obj[key] = link
+
+
+INSERT_INTO_COLLISION_FMT = """
+Schema Naming Collision.
+
+coreapi.Link for URL path {value_url} cannot be inserted into schema.
+Position conflicts with coreapi.Link for URL path {target_url}.
+
+Attempted to insert link with keys: {keys}.
+
+Adjust URLs to avoid naming collision or override `SchemaGenerator.get_keys()`
+to customise schema structure.
+"""
+
+
+class LinkNode(OrderedDict):
+    def __init__(self):
+        self.links = []
+        self.methods_counter = Counter()
+        super(LinkNode, self).__init__()
+
+    def get_available_key(self, preferred_key):
+        if preferred_key not in self:
+            return preferred_key
+
+        while True:
+            current_val = self.methods_counter[preferred_key]
+            self.methods_counter[preferred_key] += 1
+
+            key = '{}_{}'.format(preferred_key, current_val)
+            if key not in self:
+                return key
+
+
+def insert_into(target, keys, value):
+    """
+    Nested dictionary insertion.
+
+    >>> example = {}
+    >>> insert_into(example, ['a', 'b', 'c'], 123)
+    >>> example
+    LinkNode({'a': LinkNode({'b': LinkNode({'c': LinkNode(links=[123])}}})))
+    """
+    for key in keys[:-1]:
+        if key not in target:
+            target[key] = LinkNode()
+        target = target[key]
+
+    try:
+        target.links.append((keys[-1], value))
+    except TypeError:
+        msg = INSERT_INTO_COLLISION_FMT.format(
+            value_url=value.url,
+            target_url=target.url,
+            keys=keys
+        )
+        raise ValueError(msg)
+
+
+class SchemaGenerator(BaseSchemaGenerator):
+    """
+    Original CoreAPI version.
+    """
+    # Map HTTP methods onto actions.
+    default_mapping = {
+        'get': 'retrieve',
+        'post': 'create',
+        'put': 'update',
+        'patch': 'partial_update',
+        'delete': 'destroy',
+    }
+
+    # Map the method names we use for viewset actions onto external schema names.
+    # These give us names that are more suitable for the external representation.
+    # Set by 'SCHEMA_COERCE_METHOD_NAMES'.
+    coerce_method_names = None
+
+    def __init__(self, title=None, url=None, description=None, patterns=None, urlconf=None):
+        assert coreapi, '`coreapi` must be installed for schema support.'
+        assert coreschema, '`coreschema` must be installed for schema support.'
+
+        super(SchemaGenerator, self).__init__(title, url, description, patterns, urlconf)
+        self.coerce_method_names = api_settings.SCHEMA_COERCE_METHOD_NAMES
+
+    def get_links(self, request=None):
+        """
+        Return a dictionary containing all the links that should be
+        included in the API schema.
+        """
+        links = LinkNode()
+
+        paths, view_endpoints = self._get_paths_and_endpoints(request)
+
+        # Only generate the path prefix for paths that will be included
+        if not paths:
+            return None
+        prefix = self.determine_path_prefix(paths)
+
+        for path, method, view in view_endpoints:
+            if not self.has_view_permissions(path, method, view):
+                continue
+            link = view.schema.get_link(path, method, base_url=self.url)
+            subpath = path[len(prefix):]
+            keys = self.get_keys(subpath, method, view)
+            insert_into(links, keys, link)
+
+        return links
+
+    def get_schema(self, request=None, public=False):
+        """
+        Generate a `coreapi.Document` representing the API schema.
+        """
+        self._initialise_endpoints()
+
+        links = self.get_links(None if public else request)
+        if not links:
+            return None
+
+        url = self.url
+        if not url and request is not None:
+            url = request.build_absolute_uri()
+
+        distribute_links(links)
+        return coreapi.Document(
+            title=self.title, description=self.description,
+            url=url, content=links
+        )
+
+    # Method for generating the link layout....
+    def get_keys(self, subpath, method, view):
+        """
+        Return a list of keys that should be used to layout a link within
+        the schema document.
+
+        /users/                   ("users", "list"), ("users", "create")
+        /users/{pk}/              ("users", "read"), ("users", "update"), ("users", "delete")
+        /users/enabled/           ("users", "enabled")  # custom viewset list action
+        /users/{pk}/star/         ("users", "star")     # custom viewset detail action
+        /users/{pk}/groups/       ("users", "groups", "list"), ("users", "groups", "create")
+        /users/{pk}/groups/{pk}/  ("users", "groups", "read"), ("users", "groups", "update"), ("users", "groups", "delete")
+        """
+        if hasattr(view, 'action'):
+            # Viewsets have explicitly named actions.
+            action = view.action
+        else:
+            # Views have no associated action, so we determine one from the method.
+            if is_list_view(subpath, method, view):
+                action = 'list'
+            else:
+                action = self.default_mapping[method.lower()]
+
+        named_path_components = [
+            component for component
+            in subpath.strip('/').split('/')
+            if '{' not in component
+        ]
+
+        if is_custom_action(action):
+            # Custom action, eg "/users/{pk}/activate/", "/users/active/"
+            if len(view.action_map) > 1:
+                action = self.default_mapping[method.lower()]
+                if action in self.coerce_method_names:
+                    action = self.coerce_method_names[action]
+                return named_path_components + [action]
+            else:
+                return named_path_components[:-1] + [action]
+
+        if action in self.coerce_method_names:
+            action = self.coerce_method_names[action]
+
+        # Default action, eg "/users/", "/users/{pk}/"
+        return named_path_components + [action]
+
+# View Inspectors #
+
+
+def field_to_schema(field):
+    title = force_text(field.label) if field.label else ''
+    description = force_text(field.help_text) if field.help_text else ''
+
+    if isinstance(field, (serializers.ListSerializer, serializers.ListField)):
+        child_schema = field_to_schema(field.child)
+        return coreschema.Array(
+            items=child_schema,
+            title=title,
+            description=description
+        )
+    elif isinstance(field, serializers.DictField):
+        return coreschema.Object(
+            title=title,
+            description=description
+        )
+    elif isinstance(field, serializers.Serializer):
+        return coreschema.Object(
+            properties=OrderedDict([
+                (key, field_to_schema(value))
+                for key, value
+                in field.fields.items()
+            ]),
+            title=title,
+            description=description
+        )
+    elif isinstance(field, serializers.ManyRelatedField):
+        related_field_schema = field_to_schema(field.child_relation)
+
+        return coreschema.Array(
+            items=related_field_schema,
+            title=title,
+            description=description
+        )
+    elif isinstance(field, serializers.PrimaryKeyRelatedField):
+        schema_cls = coreschema.String
+        model = getattr(field.queryset, 'model', None)
+        if model is not None:
+            model_field = model._meta.pk
+            if isinstance(model_field, models.AutoField):
+                schema_cls = coreschema.Integer
+        return schema_cls(title=title, description=description)
+    elif isinstance(field, serializers.RelatedField):
+        return coreschema.String(title=title, description=description)
+    elif isinstance(field, serializers.MultipleChoiceField):
+        return coreschema.Array(
+            items=coreschema.Enum(enum=list(field.choices)),
+            title=title,
+            description=description
+        )
+    elif isinstance(field, serializers.ChoiceField):
+        return coreschema.Enum(
+            enum=list(field.choices),
+            title=title,
+            description=description
+        )
+    elif isinstance(field, serializers.BooleanField):
+        return coreschema.Boolean(title=title, description=description)
+    elif isinstance(field, (serializers.DecimalField, serializers.FloatField)):
+        return coreschema.Number(title=title, description=description)
+    elif isinstance(field, serializers.IntegerField):
+        return coreschema.Integer(title=title, description=description)
+    elif isinstance(field, serializers.DateField):
+        return coreschema.String(
+            title=title,
+            description=description,
+            format='date'
+        )
+    elif isinstance(field, serializers.DateTimeField):
+        return coreschema.String(
+            title=title,
+            description=description,
+            format='date-time'
+        )
+    elif isinstance(field, serializers.JSONField):
+        return coreschema.Object(title=title, description=description)
+
+    if field.style.get('base_template') == 'textarea.html':
+        return coreschema.String(
+            title=title,
+            description=description,
+            format='textarea'
+        )
+
+    return coreschema.String(title=title, description=description)
+
+
+class AutoSchema(ViewInspector):
+    """
+    Default inspector for APIView
+
+    Responsible for per-view introspection and schema generation.
+    """
+    def __init__(self, manual_fields=None):
+        """
+        Parameters:
+
+        * `manual_fields`: list of `coreapi.Field` instances that
+            will be added to auto-generated fields, overwriting on `Field.name`
+        """
+        super(AutoSchema, self).__init__()
+        if manual_fields is None:
+            manual_fields = []
+        self._manual_fields = manual_fields
+
+    def get_link(self, path, method, base_url):
+        """
+        Generate `coreapi.Link` for self.view, path and method.
+
+        This is the main _public_ access point.
+
+        Parameters:
+
+        * path: Route path for view from URLConf.
+        * method: The HTTP request method.
+        * base_url: The project "mount point" as given to SchemaGenerator
+        """
+        fields = self.get_path_fields(path, method)
+        fields += self.get_serializer_fields(path, method)
+        fields += self.get_pagination_fields(path, method)
+        fields += self.get_filter_fields(path, method)
+
+        manual_fields = self.get_manual_fields(path, method)
+        fields = self.update_fields(fields, manual_fields)
+
+        if fields and any([field.location in ('form', 'body') for field in fields]):
+            encoding = self.get_encoding(path, method)
+        else:
+            encoding = None
+
+        description = self.get_description(path, method)
+
+        if base_url and path.startswith('/'):
+            path = path[1:]
+
+        return coreapi.Link(
+            url=parse.urljoin(base_url, path),
+            action=method.lower(),
+            encoding=encoding,
+            fields=fields,
+            description=description
+        )
+
+    def get_description(self, path, method):
+        """
+        Determine a link description.
+
+        This will be based on the method docstring if one exists,
+        or else the class docstring.
+        """
+        view = self.view
+
+        method_name = getattr(view, 'action', method.lower())
+        method_docstring = getattr(view, method_name, None).__doc__
+        if method_docstring:
+            # An explicit docstring on the method or action.
+            return self._get_description_section(view, method.lower(), formatting.dedent(smart_text(method_docstring)))
+        else:
+            return self._get_description_section(view, getattr(view, 'action', method.lower()), view.get_view_description())
+
+    def _get_description_section(self, view, header, description):
+        lines = [line for line in description.splitlines()]
+        current_section = ''
+        sections = {'': ''}
+
+        for line in lines:
+            if header_regex.match(line):
+                current_section, seperator, lead = line.partition(':')
+                sections[current_section] = lead.strip()
+            else:
+                sections[current_section] += '\n' + line
+
+        # TODO: SCHEMA_COERCE_METHOD_NAMES appears here and in `SchemaGenerator.get_keys`
+        coerce_method_names = api_settings.SCHEMA_COERCE_METHOD_NAMES
+        if header in sections:
+            return sections[header].strip()
+        if header in coerce_method_names:
+            if coerce_method_names[header] in sections:
+                return sections[coerce_method_names[header]].strip()
+        return sections[''].strip()
+
+    def get_path_fields(self, path, method):
+        """
+        Return a list of `coreapi.Field` instances corresponding to any
+        templated path variables.
+        """
+        view = self.view
+        model = getattr(getattr(view, 'queryset', None), 'model', None)
+        fields = []
+
+        for variable in uritemplate.variables(path):
+            title = ''
+            description = ''
+            schema_cls = coreschema.String
+            kwargs = {}
+            if model is not None:
+                # Attempt to infer a field description if possible.
+                try:
+                    model_field = model._meta.get_field(variable)
+                except Exception:
+                    model_field = None
+
+                if model_field is not None and model_field.verbose_name:
+                    title = force_text(model_field.verbose_name)
+
+                if model_field is not None and model_field.help_text:
+                    description = force_text(model_field.help_text)
+                elif model_field is not None and model_field.primary_key:
+                    description = get_pk_description(model, model_field)
+
+                if hasattr(view, 'lookup_value_regex') and view.lookup_field == variable:
+                    kwargs['pattern'] = view.lookup_value_regex
+                elif isinstance(model_field, models.AutoField):
+                    schema_cls = coreschema.Integer
+
+            field = coreapi.Field(
+                name=variable,
+                location='path',
+                required=True,
+                schema=schema_cls(title=title, description=description, **kwargs)
+            )
+            fields.append(field)
+
+        return fields
+
+    def get_serializer_fields(self, path, method):
+        """
+        Return a list of `coreapi.Field` instances corresponding to any
+        request body input, as determined by the serializer class.
+        """
+        view = self.view
+
+        if method not in ('PUT', 'PATCH', 'POST'):
+            return []
+
+        if not hasattr(view, 'get_serializer'):
+            return []
+
+        try:
+            serializer = view.get_serializer()
+        except exceptions.APIException:
+            serializer = None
+            warnings.warn('{}.get_serializer() raised an exception during '
+                          'schema generation. Serializer fields will not be '
+                          'generated for {} {}.'
+                          .format(view.__class__.__name__, method, path))
+
+        if isinstance(serializer, serializers.ListSerializer):
+            return [
+                coreapi.Field(
+                    name='data',
+                    location='body',
+                    required=True,
+                    schema=coreschema.Array()
+                )
+            ]
+
+        if not isinstance(serializer, serializers.Serializer):
+            return []
+
+        fields = []
+        for field in serializer.fields.values():
+            if field.read_only or isinstance(field, serializers.HiddenField):
+                continue
+
+            required = field.required and method != 'PATCH'
+            field = coreapi.Field(
+                name=field.field_name,
+                location='form',
+                required=required,
+                schema=field_to_schema(field)
+            )
+            fields.append(field)
+
+        return fields
+
+    def get_pagination_fields(self, path, method):
+        view = self.view
+
+        if not is_list_view(path, method, view):
+            return []
+
+        pagination = getattr(view, 'pagination_class', None)
+        if not pagination:
+            return []
+
+        paginator = view.pagination_class()
+        return paginator.get_schema_fields(view)
+
+    def _allows_filters(self, path, method):
+        """
+        Determine whether to include filter Fields in schema.
+
+        Default implementation looks for ModelViewSet or GenericAPIView
+        actions/methods that cause filtering on the default implementation.
+
+        Override to adjust behaviour for your view.
+
+        Note: Introduced in v3.7: Initially "private" (i.e. with leading underscore)
+            to allow changes based on user experience.
+        """
+        if getattr(self.view, 'filter_backends', None) is None:
+            return False
+
+        if hasattr(self.view, 'action'):
+            return self.view.action in ["list", "retrieve", "update", "partial_update", "destroy"]
+
+        return method.lower() in ["get", "put", "patch", "delete"]
+
+    def get_filter_fields(self, path, method):
+        if not self._allows_filters(path, method):
+            return []
+
+        fields = []
+        for filter_backend in self.view.filter_backends:
+            fields += filter_backend().get_schema_fields(self.view)
+        return fields
+
+    def get_manual_fields(self, path, method):
+        return self._manual_fields
+
+    @staticmethod
+    def update_fields(fields, update_with):
+        """
+        Update list of coreapi.Field instances, overwriting on `Field.name`.
+
+        Utility function to handle replacing coreapi.Field fields
+        from a list by name. Used to handle `manual_fields`.
+
+        Parameters:
+
+        * `fields`: list of `coreapi.Field` instances to update
+        * `update_with: list of `coreapi.Field` instances to add or replace.
+        """
+        if not update_with:
+            return fields
+
+        by_name = OrderedDict((f.name, f) for f in fields)
+        for f in update_with:
+            by_name[f.name] = f
+        fields = list(by_name.values())
+        return fields
+
+    def get_encoding(self, path, method):
+        """
+        Return the 'encoding' parameter to use for a given endpoint.
+        """
+        view = self.view
+
+        # Core API supports the following request encodings over HTTP...
+        supported_media_types = {
+            'application/json',
+            'application/x-www-form-urlencoded',
+            'multipart/form-data',
+        }
+        parser_classes = getattr(view, 'parser_classes', [])
+        for parser_class in parser_classes:
+            media_type = getattr(parser_class, 'media_type', None)
+            if media_type in supported_media_types:
+                return media_type
+            # Raw binary uploads are supported with "application/octet-stream"
+            if media_type == '*/*':
+                return 'application/octet-stream'
+
+        return None
+
+
+class ManualSchema(ViewInspector):
+    """
+    Allows providing a list of coreapi.Fields,
+    plus an optional description.
+    """
+    def __init__(self, fields, description='', encoding=None):
+        """
+        Parameters:
+
+        * `fields`: list of `coreapi.Field` instances.
+        * `description`: String description for view. Optional.
+        """
+        super(ManualSchema, self).__init__()
+        assert all(isinstance(f, coreapi.Field) for f in fields), "`fields` must be a list of coreapi.Field instances"
+        self._fields = fields
+        self._description = description
+        self._encoding = encoding
+
+    def get_link(self, path, method, base_url):
+
+        if base_url and path.startswith('/'):
+            path = path[1:]
+
+        return coreapi.Link(
+            url=parse.urljoin(base_url, path),
+            action=method.lower(),
+            encoding=self._encoding,
+            fields=self._fields,
+            description=self._description
+        )
+
+
+def is_enabled():
+    """Is CoreAPI Mode enabled?"""
+    return issubclass(api_settings.DEFAULT_SCHEMA_CLASS, AutoSchema)
diff --git a/rest_framework/schemas/generators.py b/rest_framework/schemas/generators.py
index 8794c9967..ecb07f935 100644
--- a/rest_framework/schemas/generators.py
+++ b/rest_framework/schemas/generators.py
@@ -4,26 +4,19 @@ generators.py   # Top-down schema generation
 See schemas.__init__.py for package overview.
 """
 import re
-import warnings
-from collections import Counter, OrderedDict
 from importlib import import_module
 
 from django.conf import settings
 from django.contrib.admindocs.views import simplify_regex
 from django.core.exceptions import PermissionDenied
 from django.http import Http404
-from django.utils import six
 
 from rest_framework import exceptions
-from rest_framework.compat import (
-    URLPattern, URLResolver, coreapi, coreschema, get_original_route
-)
+from rest_framework.compat import URLPattern, URLResolver, get_original_route
 from rest_framework.request import clone_request
 from rest_framework.settings import api_settings
 from rest_framework.utils.model_meta import _get_pk
 
-from .utils import is_list_view
-
 
 def common_path(paths):
     split_paths = [path.strip('/').split('/') for path in paths]
@@ -52,78 +45,6 @@ def is_api_view(callback):
     return (cls is not None) and issubclass(cls, APIView)
 
 
-INSERT_INTO_COLLISION_FMT = """
-Schema Naming Collision.
-
-coreapi.Link for URL path {value_url} cannot be inserted into schema.
-Position conflicts with coreapi.Link for URL path {target_url}.
-
-Attemped to insert link with keys: {keys}.
-
-Adjust URLs to avoid naming collision or override `SchemaGenerator.get_keys()`
-to customise schema structure.
-"""
-
-
-class LinkNode(OrderedDict):
-    def __init__(self):
-        self.links = []
-        self.methods_counter = Counter()
-        super(LinkNode, self).__init__()
-
-    def get_available_key(self, preferred_key):
-        if preferred_key not in self:
-            return preferred_key
-
-        while True:
-            current_val = self.methods_counter[preferred_key]
-            self.methods_counter[preferred_key] += 1
-
-            key = '{}_{}'.format(preferred_key, current_val)
-            if key not in self:
-                return key
-
-
-def insert_into(target, keys, value):
-    """
-    Nested dictionary insertion.
-
-    >>> example = {}
-    >>> insert_into(example, ['a', 'b', 'c'], 123)
-    >>> example
-    LinkNode({'a': LinkNode({'b': LinkNode({'c': LinkNode(links=[123])}}})))
-    """
-    for key in keys[:-1]:
-        if key not in target:
-            target[key] = LinkNode()
-        target = target[key]
-
-    try:
-        target.links.append((keys[-1], value))
-    except TypeError:
-        msg = INSERT_INTO_COLLISION_FMT.format(
-            value_url=value.url,
-            target_url=target.url,
-            keys=keys
-        )
-        raise ValueError(msg)
-
-
-def distribute_links(obj):
-    for key, value in obj.items():
-        distribute_links(value)
-
-    for preferred_key, link in obj.links:
-        key = obj.get_available_key(preferred_key)
-        obj[key] = link
-
-
-def is_custom_action(action):
-    return action not in {
-        'retrieve', 'list', 'create', 'update', 'partial_update', 'destroy'
-    }
-
-
 def endpoint_ordering(endpoint):
     path, method, callback = endpoint
     method_priority = {
@@ -141,7 +62,7 @@ _PATH_PARAMETER_COMPONENT_RE = re.compile(
 )
 
 
-class EndpointEnumerator(object):
+class EndpointEnumerator:
     """
     A class to determine the available API endpoints that a project exposes.
     """
@@ -152,7 +73,7 @@ class EndpointEnumerator(object):
                 urlconf = settings.ROOT_URLCONF
 
             # Load the given URLconf module
-            if isinstance(urlconf, six.string_types):
+            if isinstance(urlconf, str):
                 urls = import_module(urlconf)
             else:
                 urls = urlconf
@@ -186,19 +107,20 @@ class EndpointEnumerator(object):
                 )
                 api_endpoints.extend(nested_endpoints)
 
-        api_endpoints = sorted(api_endpoints, key=endpoint_ordering)
-
-        return api_endpoints
+        return sorted(api_endpoints, key=endpoint_ordering)
 
     def get_path_from_regex(self, path_regex):
         """
         Given a URL conf regex, return a URI template string.
         """
+        # ???: Would it be feasible to adjust this such that we generate the
+        # path, plus the kwargs, plus the type from the convertor, such that we
+        # could feed that straight into the parameter schema object?
+
         path = simplify_regex(path_regex)
 
         # Strip Django 2.0 convertors as they are incompatible with uritemplate format
-        path = re.sub(_PATH_PARAMETER_COMPONENT_RE, r'{\g<parameter>}', path)
-        return path
+        return re.sub(_PATH_PARAMETER_COMPONENT_RE, r'{\g<parameter>}', path)
 
     def should_include_endpoint(self, path, callback):
         """
@@ -207,14 +129,6 @@ class EndpointEnumerator(object):
         if not is_api_view(callback):
             return False  # Ignore anything except REST framework views.
 
-        if hasattr(callback.cls, 'exclude_from_schema'):
-            fmt = ("The `{}.exclude_from_schema` attribute is deprecated. "
-                   "Set `schema = None` instead.")
-            msg = fmt.format(callback.cls.__name__)
-            warnings.warn(msg, DeprecationWarning)
-            if getattr(callback.cls, 'exclude_from_schema', False):
-                return False
-
         if callback.cls.schema is None:
             return False
 
@@ -241,35 +155,18 @@ class EndpointEnumerator(object):
         return [method for method in methods if method not in ('OPTIONS', 'HEAD')]
 
 
-class SchemaGenerator(object):
-    # Map HTTP methods onto actions.
-    default_mapping = {
-        'get': 'retrieve',
-        'post': 'create',
-        'put': 'update',
-        'patch': 'partial_update',
-        'delete': 'destroy',
-    }
+class BaseSchemaGenerator(object):
     endpoint_inspector_cls = EndpointEnumerator
 
-    # Map the method names we use for viewset actions onto external schema names.
-    # These give us names that are more suitable for the external representation.
-    # Set by 'SCHEMA_COERCE_METHOD_NAMES'.
-    coerce_method_names = None
-
     # 'pk' isn't great as an externally exposed name for an identifier,
     # so by default we prefer to use the actual model field name for schemas.
     # Set by 'SCHEMA_COERCE_PATH_PK'.
     coerce_path_pk = None
 
     def __init__(self, title=None, url=None, description=None, patterns=None, urlconf=None):
-        assert coreapi, '`coreapi` must be installed for schema support.'
-        assert coreschema, '`coreschema` must be installed for schema support.'
-
         if url and not url.endswith('/'):
             url += '/'
 
-        self.coerce_method_names = api_settings.SCHEMA_COERCE_METHOD_NAMES
         self.coerce_path_pk = api_settings.SCHEMA_COERCE_PATH_PK
 
         self.patterns = patterns
@@ -279,36 +176,15 @@ class SchemaGenerator(object):
         self.url = url
         self.endpoints = None
 
-    def get_schema(self, request=None, public=False):
-        """
-        Generate a `coreapi.Document` representing the API schema.
-        """
+    def _initialise_endpoints(self):
         if self.endpoints is None:
             inspector = self.endpoint_inspector_cls(self.patterns, self.urlconf)
             self.endpoints = inspector.get_api_endpoints()
 
-        links = self.get_links(None if public else request)
-        if not links:
-            return None
-
-        url = self.url
-        if not url and request is not None:
-            url = request.build_absolute_uri()
-
-        distribute_links(links)
-        return coreapi.Document(
-            title=self.title, description=self.description,
-            url=url, content=links
-        )
-
-    def get_links(self, request=None):
+    def _get_paths_and_endpoints(self, request):
         """
-        Return a dictionary containing all the links that should be
-        included in the API schema.
+        Generate (path, method, view) given (path, method, callback) for paths.
         """
-        links = LinkNode()
-
-        # Generate (path, method, view) given (path, method, callback).
         paths = []
         view_endpoints = []
         for path, method, callback in self.endpoints:
@@ -317,22 +193,48 @@ class SchemaGenerator(object):
             paths.append(path)
             view_endpoints.append((path, method, view))
 
-        # Only generate the path prefix for paths that will be included
-        if not paths:
-            return None
-        prefix = self.determine_path_prefix(paths)
+        return paths, view_endpoints
 
-        for path, method, view in view_endpoints:
-            if not self.has_view_permissions(path, method, view):
-                continue
-            link = view.schema.get_link(path, method, base_url=self.url)
-            subpath = path[len(prefix):]
-            keys = self.get_keys(subpath, method, view)
-            insert_into(links, keys, link)
+    def create_view(self, callback, method, request=None):
+        """
+        Given a callback, return an actual view instance.
+        """
+        view = callback.cls(**getattr(callback, 'initkwargs', {}))
+        view.args = ()
+        view.kwargs = {}
+        view.format_kwarg = None
+        view.request = None
+        view.action_map = getattr(callback, 'actions', None)
 
-        return links
+        actions = getattr(callback, 'actions', None)
+        if actions is not None:
+            if method == 'OPTIONS':
+                view.action = 'metadata'
+            else:
+                view.action = actions.get(method.lower())
 
-    # Methods used when we generate a view instance from the raw callback...
+        if request is not None:
+            view.request = clone_request(request, method)
+
+        return view
+
+    def coerce_path(self, path, method, view):
+        """
+        Coerce {pk} path arguments into the name of the model field,
+        where possible. This is cleaner for an external representation.
+        (Ie. "this is an identifier", not "this is a database primary key")
+        """
+        if not self.coerce_path_pk or '{pk}' not in path:
+            return path
+        model = getattr(getattr(view, 'queryset', None), 'model', None)
+        if model:
+            field_name = get_pk_name(model)
+        else:
+            field_name = 'id'
+        return path.replace('{pk}', '{%s}' % field_name)
+
+    def get_schema(self, request=None, public=False):
+        raise NotImplementedError(".get_schema() must be implemented in subclasses.")
 
     def determine_path_prefix(self, paths):
         """
@@ -365,29 +267,6 @@ class SchemaGenerator(object):
             prefixes.append('/' + prefix + '/')
         return common_path(prefixes)
 
-    def create_view(self, callback, method, request=None):
-        """
-        Given a callback, return an actual view instance.
-        """
-        view = callback.cls(**getattr(callback, 'initkwargs', {}))
-        view.args = ()
-        view.kwargs = {}
-        view.format_kwarg = None
-        view.request = None
-        view.action_map = getattr(callback, 'actions', None)
-
-        actions = getattr(callback, 'actions', None)
-        if actions is not None:
-            if method == 'OPTIONS':
-                view.action = 'metadata'
-            else:
-                view.action = actions.get(method.lower())
-
-        if request is not None:
-            view.request = clone_request(request, method)
-
-        return view
-
     def has_view_permissions(self, path, method, view):
         """
         Return `True` if the incoming request has the correct view permissions.
@@ -400,64 +279,3 @@ class SchemaGenerator(object):
         except (exceptions.APIException, Http404, PermissionDenied):
             return False
         return True
-
-    def coerce_path(self, path, method, view):
-        """
-        Coerce {pk} path arguments into the name of the model field,
-        where possible. This is cleaner for an external representation.
-        (Ie. "this is an identifier", not "this is a database primary key")
-        """
-        if not self.coerce_path_pk or '{pk}' not in path:
-            return path
-        model = getattr(getattr(view, 'queryset', None), 'model', None)
-        if model:
-            field_name = get_pk_name(model)
-        else:
-            field_name = 'id'
-        return path.replace('{pk}', '{%s}' % field_name)
-
-    # Method for generating the link layout....
-
-    def get_keys(self, subpath, method, view):
-        """
-        Return a list of keys that should be used to layout a link within
-        the schema document.
-
-        /users/                   ("users", "list"), ("users", "create")
-        /users/{pk}/              ("users", "read"), ("users", "update"), ("users", "delete")
-        /users/enabled/           ("users", "enabled")  # custom viewset list action
-        /users/{pk}/star/         ("users", "star")     # custom viewset detail action
-        /users/{pk}/groups/       ("users", "groups", "list"), ("users", "groups", "create")
-        /users/{pk}/groups/{pk}/  ("users", "groups", "read"), ("users", "groups", "update"), ("users", "groups", "delete")
-        """
-        if hasattr(view, 'action'):
-            # Viewsets have explicitly named actions.
-            action = view.action
-        else:
-            # Views have no associated action, so we determine one from the method.
-            if is_list_view(subpath, method, view):
-                action = 'list'
-            else:
-                action = self.default_mapping[method.lower()]
-
-        named_path_components = [
-            component for component
-            in subpath.strip('/').split('/')
-            if '{' not in component
-        ]
-
-        if is_custom_action(action):
-            # Custom action, eg "/users/{pk}/activate/", "/users/active/"
-            if len(view.action_map) > 1:
-                action = self.default_mapping[method.lower()]
-                if action in self.coerce_method_names:
-                    action = self.coerce_method_names[action]
-                return named_path_components + [action]
-            else:
-                return named_path_components[:-1] + [action]
-
-        if action in self.coerce_method_names:
-            action = self.coerce_method_names[action]
-
-        # Default action, eg "/users/", "/users/{pk}/"
-        return named_path_components + [action]
diff --git a/rest_framework/schemas/inspectors.py b/rest_framework/schemas/inspectors.py
index b90f60e08..86fcdc435 100644
--- a/rest_framework/schemas/inspectors.py
+++ b/rest_framework/schemas/inspectors.py
@@ -1,129 +1,14 @@
-# -*- coding: utf-8 -*-
 """
 inspectors.py   # Per-endpoint view introspection
 
 See schemas.__init__.py for package overview.
 """
-import re
-import warnings
-from collections import OrderedDict
 from weakref import WeakKeyDictionary
 
-from django.db import models
-from django.utils.encoding import force_text, smart_text
-from django.utils.six.moves.urllib import parse as urlparse
-from django.utils.translation import ugettext_lazy as _
-
-from rest_framework import exceptions, serializers
-from rest_framework.compat import coreapi, coreschema, uritemplate
 from rest_framework.settings import api_settings
-from rest_framework.utils import formatting
-
-from .utils import is_list_view
-
-header_regex = re.compile('^[a-zA-Z][0-9A-Za-z_]*:')
 
 
-def field_to_schema(field):
-    title = force_text(field.label) if field.label else ''
-    description = force_text(field.help_text) if field.help_text else ''
-
-    if isinstance(field, (serializers.ListSerializer, serializers.ListField)):
-        child_schema = field_to_schema(field.child)
-        return coreschema.Array(
-            items=child_schema,
-            title=title,
-            description=description
-        )
-    elif isinstance(field, serializers.DictField):
-        return coreschema.Object(
-            title=title,
-            description=description
-        )
-    elif isinstance(field, serializers.Serializer):
-        return coreschema.Object(
-            properties=OrderedDict([
-                (key, field_to_schema(value))
-                for key, value
-                in field.fields.items()
-            ]),
-            title=title,
-            description=description
-        )
-    elif isinstance(field, serializers.ManyRelatedField):
-        return coreschema.Array(
-            items=coreschema.String(),
-            title=title,
-            description=description
-        )
-    elif isinstance(field, serializers.PrimaryKeyRelatedField):
-        schema_cls = coreschema.String
-        model = getattr(field.queryset, 'model', None)
-        if model is not None:
-            model_field = model._meta.pk
-            if isinstance(model_field, models.AutoField):
-                schema_cls = coreschema.Integer
-        return schema_cls(title=title, description=description)
-    elif isinstance(field, serializers.RelatedField):
-        return coreschema.String(title=title, description=description)
-    elif isinstance(field, serializers.MultipleChoiceField):
-        return coreschema.Array(
-            items=coreschema.Enum(enum=list(field.choices)),
-            title=title,
-            description=description
-        )
-    elif isinstance(field, serializers.ChoiceField):
-        return coreschema.Enum(
-            enum=list(field.choices),
-            title=title,
-            description=description
-        )
-    elif isinstance(field, serializers.BooleanField):
-        return coreschema.Boolean(title=title, description=description)
-    elif isinstance(field, (serializers.DecimalField, serializers.FloatField)):
-        return coreschema.Number(title=title, description=description)
-    elif isinstance(field, serializers.IntegerField):
-        return coreschema.Integer(title=title, description=description)
-    elif isinstance(field, serializers.DateField):
-        return coreschema.String(
-            title=title,
-            description=description,
-            format='date'
-        )
-    elif isinstance(field, serializers.DateTimeField):
-        return coreschema.String(
-            title=title,
-            description=description,
-            format='date-time'
-        )
-    elif isinstance(field, serializers.JSONField):
-        return coreschema.Object(title=title, description=description)
-
-    if field.style.get('base_template') == 'textarea.html':
-        return coreschema.String(
-            title=title,
-            description=description,
-            format='textarea'
-        )
-
-    return coreschema.String(title=title, description=description)
-
-
-def get_pk_description(model, model_field):
-    if isinstance(model_field, models.AutoField):
-        value_type = _('unique integer value')
-    elif isinstance(model_field, models.UUIDField):
-        value_type = _('UUID string')
-    else:
-        value_type = _('unique value')
-
-    return _('A {value_type} identifying this {name}.').format(
-        value_type=value_type,
-        name=model._meta.verbose_name,
-    )
-
-
-class ViewInspector(object):
+class ViewInspector:
     """
     Descriptor class on APIView.
 
@@ -163,7 +48,10 @@ class ViewInspector(object):
     @property
     def view(self):
         """View property."""
-        assert self._view is not None, "Schema generation REQUIRES a view instance. (Hint: you accessed `schema` from the view class rather than an instance.)"
+        assert self._view is not None, (
+            "Schema generation REQUIRES a view instance. (Hint: you accessed "
+            "`schema` from the view class rather than an instance.)"
+        )
         return self._view
 
     @view.setter
@@ -174,330 +62,18 @@ class ViewInspector(object):
     def view(self):
         self._view = None
 
-    def get_link(self, path, method, base_url):
-        """
-        Generate `coreapi.Link` for self.view, path and method.
-
-        This is the main _public_ access point.
-
-        Parameters:
-
-        * path: Route path for view from URLConf.
-        * method: The HTTP request method.
-        * base_url: The project "mount point" as given to SchemaGenerator
-        """
-        raise NotImplementedError(".get_link() must be overridden.")
-
-
-class AutoSchema(ViewInspector):
-    """
-    Default inspector for APIView
-
-    Responsible for per-view instrospection and schema generation.
-    """
-    def __init__(self, manual_fields=None):
-        """
-        Parameters:
-
-        * `manual_fields`: list of `coreapi.Field` instances that
-            will be added to auto-generated fields, overwriting on `Field.name`
-        """
-        super(AutoSchema, self).__init__()
-        if manual_fields is None:
-            manual_fields = []
-        self._manual_fields = manual_fields
-
-    def get_link(self, path, method, base_url):
-        fields = self.get_path_fields(path, method)
-        fields += self.get_serializer_fields(path, method)
-        fields += self.get_pagination_fields(path, method)
-        fields += self.get_filter_fields(path, method)
-
-        manual_fields = self.get_manual_fields(path, method)
-        fields = self.update_fields(fields, manual_fields)
-
-        if fields and any([field.location in ('form', 'body') for field in fields]):
-            encoding = self.get_encoding(path, method)
-        else:
-            encoding = None
-
-        description = self.get_description(path, method)
-
-        if base_url and path.startswith('/'):
-            path = path[1:]
-
-        return coreapi.Link(
-            url=urlparse.urljoin(base_url, path),
-            action=method.lower(),
-            encoding=encoding,
-            fields=fields,
-            description=description
-        )
-
-    def get_description(self, path, method):
-        """
-        Determine a link description.
-
-        This will be based on the method docstring if one exists,
-        or else the class docstring.
-        """
-        view = self.view
-
-        method_name = getattr(view, 'action', method.lower())
-        method_docstring = getattr(view, method_name, None).__doc__
-        if method_docstring:
-            # An explicit docstring on the method or action.
-            return formatting.dedent(smart_text(method_docstring))
-
-        description = view.get_view_description()
-        lines = [line for line in description.splitlines()]
-        current_section = ''
-        sections = {'': ''}
-
-        for line in lines:
-            if header_regex.match(line):
-                current_section, seperator, lead = line.partition(':')
-                sections[current_section] = lead.strip()
-            else:
-                sections[current_section] += '\n' + line
-
-        # TODO: SCHEMA_COERCE_METHOD_NAMES appears here and in `SchemaGenerator.get_keys`
-        coerce_method_names = api_settings.SCHEMA_COERCE_METHOD_NAMES
-        header = getattr(view, 'action', method.lower())
-        if header in sections:
-            return sections[header].strip()
-        if header in coerce_method_names:
-            if coerce_method_names[header] in sections:
-                return sections[coerce_method_names[header]].strip()
-        return sections[''].strip()
-
-    def get_path_fields(self, path, method):
-        """
-        Return a list of `coreapi.Field` instances corresponding to any
-        templated path variables.
-        """
-        view = self.view
-        model = getattr(getattr(view, 'queryset', None), 'model', None)
-        fields = []
-
-        for variable in uritemplate.variables(path):
-            title = ''
-            description = ''
-            schema_cls = coreschema.String
-            kwargs = {}
-            if model is not None:
-                # Attempt to infer a field description if possible.
-                try:
-                    model_field = model._meta.get_field(variable)
-                except Exception:
-                    model_field = None
-
-                if model_field is not None and model_field.verbose_name:
-                    title = force_text(model_field.verbose_name)
-
-                if model_field is not None and model_field.help_text:
-                    description = force_text(model_field.help_text)
-                elif model_field is not None and model_field.primary_key:
-                    description = get_pk_description(model, model_field)
-
-                if hasattr(view, 'lookup_value_regex') and view.lookup_field == variable:
-                    kwargs['pattern'] = view.lookup_value_regex
-                elif isinstance(model_field, models.AutoField):
-                    schema_cls = coreschema.Integer
-
-            field = coreapi.Field(
-                name=variable,
-                location='path',
-                required=True,
-                schema=schema_cls(title=title, description=description, **kwargs)
-            )
-            fields.append(field)
-
-        return fields
-
-    def get_serializer_fields(self, path, method):
-        """
-        Return a list of `coreapi.Field` instances corresponding to any
-        request body input, as determined by the serializer class.
-        """
-        view = self.view
-
-        if method not in ('PUT', 'PATCH', 'POST'):
-            return []
-
-        if not hasattr(view, 'get_serializer'):
-            return []
-
-        try:
-            serializer = view.get_serializer()
-        except exceptions.APIException:
-            serializer = None
-            warnings.warn('{}.get_serializer() raised an exception during '
-                          'schema generation. Serializer fields will not be '
-                          'generated for {} {}.'
-                          .format(view.__class__.__name__, method, path))
-
-        if isinstance(serializer, serializers.ListSerializer):
-            return [
-                coreapi.Field(
-                    name='data',
-                    location='body',
-                    required=True,
-                    schema=coreschema.Array()
-                )
-            ]
-
-        if not isinstance(serializer, serializers.Serializer):
-            return []
-
-        fields = []
-        for field in serializer.fields.values():
-            if field.read_only or isinstance(field, serializers.HiddenField):
-                continue
-
-            required = field.required and method != 'PATCH'
-            field = coreapi.Field(
-                name=field.field_name,
-                location='form',
-                required=required,
-                schema=field_to_schema(field)
-            )
-            fields.append(field)
-
-        return fields
-
-    def get_pagination_fields(self, path, method):
-        view = self.view
-
-        if not is_list_view(path, method, view):
-            return []
-
-        pagination = getattr(view, 'pagination_class', None)
-        if not pagination:
-            return []
-
-        paginator = view.pagination_class()
-        return paginator.get_schema_fields(view)
-
-    def _allows_filters(self, path, method):
-        """
-        Determine whether to include filter Fields in schema.
-
-        Default implementation looks for ModelViewSet or GenericAPIView
-        actions/methods that cause filtering on the default implementation.
-
-        Override to adjust behaviour for your view.
-
-        Note: Introduced in v3.7: Initially "private" (i.e. with leading underscore)
-            to allow changes based on user experience.
-        """
-        if getattr(self.view, 'filter_backends', None) is None:
-            return False
-
-        if hasattr(self.view, 'action'):
-            return self.view.action in ["list", "retrieve", "update", "partial_update", "destroy"]
-
-        return method.lower() in ["get", "put", "patch", "delete"]
-
-    def get_filter_fields(self, path, method):
-        if not self._allows_filters(path, method):
-            return []
-
-        fields = []
-        for filter_backend in self.view.filter_backends:
-            fields += filter_backend().get_schema_fields(self.view)
-        return fields
-
-    def get_manual_fields(self, path, method):
-        return self._manual_fields
-
-    @staticmethod
-    def update_fields(fields, update_with):
-        """
-        Update list of coreapi.Field instances, overwriting on `Field.name`.
-
-        Utility function to handle replacing coreapi.Field fields
-        from a list by name. Used to handle `manual_fields`.
-
-        Parameters:
-
-        * `fields`: list of `coreapi.Field` instances to update
-        * `update_with: list of `coreapi.Field` instances to add or replace.
-        """
-        if not update_with:
-            return fields
-
-        by_name = OrderedDict((f.name, f) for f in fields)
-        for f in update_with:
-            by_name[f.name] = f
-        fields = list(by_name.values())
-        return fields
-
-    def get_encoding(self, path, method):
-        """
-        Return the 'encoding' parameter to use for a given endpoint.
-        """
-        view = self.view
-
-        # Core API supports the following request encodings over HTTP...
-        supported_media_types = {
-            'application/json',
-            'application/x-www-form-urlencoded',
-            'multipart/form-data',
-        }
-        parser_classes = getattr(view, 'parser_classes', [])
-        for parser_class in parser_classes:
-            media_type = getattr(parser_class, 'media_type', None)
-            if media_type in supported_media_types:
-                return media_type
-            # Raw binary uploads are supported with "application/octet-stream"
-            if media_type == '*/*':
-                return 'application/octet-stream'
-
-        return None
-
-
-class ManualSchema(ViewInspector):
-    """
-    Allows providing a list of coreapi.Fields,
-    plus an optional description.
-    """
-    def __init__(self, fields, description='', encoding=None):
-        """
-        Parameters:
-
-        * `fields`: list of `coreapi.Field` instances.
-        * `descripton`: String description for view. Optional.
-        """
-        super(ManualSchema, self).__init__()
-        assert all(isinstance(f, coreapi.Field) for f in fields), "`fields` must be a list of coreapi.Field instances"
-        self._fields = fields
-        self._description = description
-        self._encoding = encoding
-
-    def get_link(self, path, method, base_url):
-
-        if base_url and path.startswith('/'):
-            path = path[1:]
-
-        return coreapi.Link(
-            url=urlparse.urljoin(base_url, path),
-            action=method.lower(),
-            encoding=self._encoding,
-            fields=self._fields,
-            description=self._description
-        )
-
 
 class DefaultSchema(ViewInspector):
     """Allows overriding AutoSchema using DEFAULT_SCHEMA_CLASS setting"""
     def __get__(self, instance, owner):
-        result = super(DefaultSchema, self).__get__(instance, owner)
+        result = super().__get__(instance, owner)
         if not isinstance(result, DefaultSchema):
             return result
 
         inspector_class = api_settings.DEFAULT_SCHEMA_CLASS
-        assert issubclass(inspector_class, ViewInspector), "DEFAULT_SCHEMA_CLASS must be set to a ViewInspector (usually an AutoSchema) subclass"
+        assert issubclass(inspector_class, ViewInspector), (
+            "DEFAULT_SCHEMA_CLASS must be set to a ViewInspector (usually an AutoSchema) subclass"
+        )
         inspector = inspector_class()
         inspector.view = instance
         return inspector
diff --git a/rest_framework/schemas/openapi.py b/rest_framework/schemas/openapi.py
new file mode 100644
index 000000000..44b281be8
--- /dev/null
+++ b/rest_framework/schemas/openapi.py
@@ -0,0 +1,377 @@
+import warnings
+
+from django.db import models
+from django.utils.encoding import force_text
+
+from rest_framework import exceptions, serializers
+from rest_framework.compat import uritemplate
+
+from .generators import BaseSchemaGenerator
+from .inspectors import ViewInspector
+from .utils import get_pk_description, is_list_view
+
+# Generator
+
+
+class SchemaGenerator(BaseSchemaGenerator):
+
+    def get_info(self):
+        info = {
+            'title': self.title,
+            'version': 'TODO',
+        }
+
+        if self.description is not None:
+            info['description'] = self.description
+
+        return info
+
+    def get_paths(self, request=None):
+        result = {}
+
+        paths, view_endpoints = self._get_paths_and_endpoints(request)
+
+        # Only generate the path prefix for paths that will be included
+        if not paths:
+            return None
+        prefix = self.determine_path_prefix(paths)
+
+        for path, method, view in view_endpoints:
+            if not self.has_view_permissions(path, method, view):
+                continue
+            operation = view.schema.get_operation(path, method)
+            subpath = '/' + path[len(prefix):]
+            result.setdefault(subpath, {})
+            result[subpath][method.lower()] = operation
+
+        return result
+
+    def get_schema(self, request=None, public=False):
+        """
+        Generate a OpenAPI schema.
+        """
+        self._initialise_endpoints()
+
+        paths = self.get_paths(None if public else request)
+        if not paths:
+            return None
+
+        schema = {
+            'openapi': '3.0.2',
+            'info': self.get_info(),
+            'paths': paths,
+        }
+
+        return schema
+
+# View Inspectors
+
+
+class AutoSchema(ViewInspector):
+
+    content_types = ['application/json']
+    method_mapping = {
+        'get': 'Retrieve',
+        'post': 'Create',
+        'put': 'Update',
+        'patch': 'PartialUpdate',
+        'delete': 'Destroy',
+    }
+
+    def get_operation(self, path, method):
+        operation = {}
+
+        operation['operationId'] = self._get_operation_id(path, method)
+
+        parameters = []
+        parameters += self._get_path_parameters(path, method)
+        parameters += self._get_pagination_parameters(path, method)
+        parameters += self._get_filter_parameters(path, method)
+        operation['parameters'] = parameters
+
+        request_body = self._get_request_body(path, method)
+        if request_body:
+            operation['requestBody'] = request_body
+        operation['responses'] = self._get_responses(path, method)
+
+        return operation
+
+    def _get_operation_id(self, path, method):
+        """
+        Compute an operation ID from the model, serializer or view name.
+        """
+        method_name = getattr(self.view, 'action', method.lower())
+        if is_list_view(path, method, self.view):
+            action = 'List'
+        elif method_name not in self.method_mapping:
+            action = method_name
+        else:
+            action = self.method_mapping[method.lower()]
+
+        # Try to deduce the ID from the view's model
+        model = getattr(getattr(self.view, 'queryset', None), 'model', None)
+        if model is not None:
+            name = model.__name__
+
+        # Try with the serializer class name
+        elif hasattr(self.view, 'get_serializer_class'):
+            name = self.view.get_serializer_class().__name__
+            if name.endswith('Serializer'):
+                name = name[:-10]
+
+        # Fallback to the view name
+        else:
+            name = self.view.__class__.__name__
+            if name.endswith('APIView'):
+                name = name[:-7]
+            elif name.endswith('View'):
+                name = name[:-4]
+            if name.endswith(action):  # ListView, UpdateAPIView, ThingDelete ...
+                name = name[:-len(action)]
+
+        if action == 'List' and not name.endswith('s'):  # ListThings instead of ListThing
+            name += 's'
+
+        return action + name
+
+    def _get_path_parameters(self, path, method):
+        """
+        Return a list of parameters from templated path variables.
+        """
+        assert uritemplate, '`uritemplate` must be installed for OpenAPI schema support.'
+
+        model = getattr(getattr(self.view, 'queryset', None), 'model', None)
+        parameters = []
+
+        for variable in uritemplate.variables(path):
+            description = ''
+            if model is not None:  # TODO: test this.
+                # Attempt to infer a field description if possible.
+                try:
+                    model_field = model._meta.get_field(variable)
+                except Exception:
+                    model_field = None
+
+                if model_field is not None and model_field.help_text:
+                    description = force_text(model_field.help_text)
+                elif model_field is not None and model_field.primary_key:
+                    description = get_pk_description(model, model_field)
+
+            parameter = {
+                "name": variable,
+                "in": "path",
+                "required": True,
+                "description": description,
+                'schema': {
+                    'type': 'string',  # TODO: integer, pattern, ...
+                },
+            }
+            parameters.append(parameter)
+
+        return parameters
+
+    def _get_filter_parameters(self, path, method):
+        if not self._allows_filters(path, method):
+            return []
+        parameters = []
+        for filter_backend in self.view.filter_backends:
+            parameters += filter_backend().get_schema_operation_parameters(self.view)
+        return parameters
+
+    def _allows_filters(self, path, method):
+        """
+        Determine whether to include filter Fields in schema.
+
+        Default implementation looks for ModelViewSet or GenericAPIView
+        actions/methods that cause filtering on the default implementation.
+        """
+        if getattr(self.view, 'filter_backends', None) is None:
+            return False
+        if hasattr(self.view, 'action'):
+            return self.view.action in ["list", "retrieve", "update", "partial_update", "destroy"]
+        return method.lower() in ["get", "put", "patch", "delete"]
+
+    def _get_pagination_parameters(self, path, method):
+        view = self.view
+
+        if not is_list_view(path, method, view):
+            return []
+
+        pagination = getattr(view, 'pagination_class', None)
+        if not pagination:
+            return []
+
+        paginator = view.pagination_class()
+        return paginator.get_schema_operation_parameters(view)
+
+    def _map_field(self, field):
+
+        # Nested Serializers, `many` or not.
+        if isinstance(field, serializers.ListSerializer):
+            return {
+                'type': 'array',
+                'items': self._map_serializer(field.child)
+            }
+        if isinstance(field, serializers.Serializer):
+            data = self._map_serializer(field)
+            data['type'] = 'object'
+            return data
+
+        # Related fields.
+        if isinstance(field, serializers.ManyRelatedField):
+            return {
+                'type': 'array',
+                'items': self._map_field(field.child_relation)
+            }
+        if isinstance(field, serializers.PrimaryKeyRelatedField):
+            model = getattr(field.queryset, 'model', None)
+            if model is not None:
+                model_field = model._meta.pk
+                if isinstance(model_field, models.AutoField):
+                    return {'type': 'integer'}
+
+        # ChoiceFields (single and multiple).
+        # Q:
+        # - Is 'type' required?
+        # - can we determine the TYPE of a choicefield?
+        if isinstance(field, serializers.MultipleChoiceField):
+            return {
+                'type': 'array',
+                'items': {
+                    'enum': list(field.choices)
+                },
+            }
+
+        if isinstance(field, serializers.ChoiceField):
+            return {
+                'enum': list(field.choices),
+            }
+
+        # ListField.
+        if isinstance(field, serializers.ListField):
+            return {
+                'type': 'array',
+            }
+
+        # DateField and DateTimeField type is string
+        if isinstance(field, serializers.DateField):
+            return {
+                'type': 'string',
+                'format': 'date',
+            }
+
+        if isinstance(field, serializers.DateTimeField):
+            return {
+                'type': 'string',
+                'format': 'date-time',
+            }
+
+        # Simplest cases, default to 'string' type:
+        FIELD_CLASS_SCHEMA_TYPE = {
+            serializers.BooleanField: 'boolean',
+            serializers.DecimalField: 'number',
+            serializers.FloatField: 'number',
+            serializers.IntegerField: 'integer',
+
+            serializers.JSONField: 'object',
+            serializers.DictField: 'object',
+        }
+        return {'type': FIELD_CLASS_SCHEMA_TYPE.get(field.__class__, 'string')}
+
+    def _map_serializer(self, serializer):
+        # Assuming we have a valid serializer instance.
+        # TODO:
+        #   - field is Nested or List serializer.
+        #   - Handle read_only/write_only for request/response differences.
+        #       - could do this with readOnly/writeOnly and then filter dict.
+        required = []
+        properties = {}
+
+        for field in serializer.fields.values():
+            if isinstance(field, serializers.HiddenField):
+                continue
+
+            if field.required:
+                required.append(field.field_name)
+
+            schema = self._map_field(field)
+            if field.read_only:
+                schema['readOnly'] = True
+            if field.write_only:
+                schema['writeOnly'] = True
+            if field.allow_null:
+                schema['nullable'] = True
+
+            properties[field.field_name] = schema
+        return {
+            'required': required,
+            'properties': properties,
+        }
+
+    def _get_request_body(self, path, method):
+        view = self.view
+
+        if method not in ('PUT', 'PATCH', 'POST'):
+            return {}
+
+        if not hasattr(view, 'get_serializer'):
+            return {}
+
+        try:
+            serializer = view.get_serializer()
+        except exceptions.APIException:
+            serializer = None
+            warnings.warn('{}.get_serializer() raised an exception during '
+                          'schema generation. Serializer fields will not be '
+                          'generated for {} {}.'
+                          .format(view.__class__.__name__, method, path))
+
+        if not isinstance(serializer, serializers.Serializer):
+            return {}
+
+        content = self._map_serializer(serializer)
+        # No required fields for PATCH
+        if method == 'PATCH':
+            del content['required']
+        # No read_only fields for request.
+        for name, schema in content['properties'].copy().items():
+            if 'readOnly' in schema:
+                del content['properties'][name]
+
+        return {
+            'content': {
+                ct: {'schema': content}
+                for ct in self.content_types
+            }
+        }
+
+    def _get_responses(self, path, method):
+        # TODO: Handle multiple codes.
+        content = {}
+        view = self.view
+        if hasattr(view, 'get_serializer'):
+            try:
+                serializer = view.get_serializer()
+            except exceptions.APIException:
+                serializer = None
+                warnings.warn('{}.get_serializer() raised an exception during '
+                              'schema generation. Serializer fields will not be '
+                              'generated for {} {}.'
+                              .format(view.__class__.__name__, method, path))
+
+            if isinstance(serializer, serializers.Serializer):
+                content = self._map_serializer(serializer)
+                # No write_only fields for response.
+                for name, schema in content['properties'].copy().items():
+                    if 'writeOnly' in schema:
+                        del content['properties'][name]
+                        content['required'] = [f for f in content['required'] if f != name]
+
+        return {
+            '200': {
+                'content': {
+                    ct: {'schema': content}
+                    for ct in self.content_types
+                }
+            }
+        }
diff --git a/rest_framework/schemas/utils.py b/rest_framework/schemas/utils.py
index 76437a20a..6724eb428 100644
--- a/rest_framework/schemas/utils.py
+++ b/rest_framework/schemas/utils.py
@@ -3,6 +3,9 @@ utils.py        # Shared helper functions
 
 See schemas.__init__.py for package overview.
 """
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
 from rest_framework.mixins import RetrieveModelMixin
 
 
@@ -22,3 +25,17 @@ def is_list_view(path, method, view):
     if path_components and '{' in path_components[-1]:
         return False
     return True
+
+
+def get_pk_description(model, model_field):
+    if isinstance(model_field, models.AutoField):
+        value_type = _('unique integer value')
+    elif isinstance(model_field, models.UUIDField):
+        value_type = _('UUID string')
+    else:
+        value_type = _('unique value')
+
+    return _('A {value_type} identifying this {name}.').format(
+        value_type=value_type,
+        name=model._meta.verbose_name,
+    )
diff --git a/rest_framework/schemas/views.py b/rest_framework/schemas/views.py
index b13eadea9..527a23236 100644
--- a/rest_framework/schemas/views.py
+++ b/rest_framework/schemas/views.py
@@ -5,6 +5,7 @@ See schemas.__init__.py for package overview.
 """
 from rest_framework import exceptions, renderers
 from rest_framework.response import Response
+from rest_framework.schemas import coreapi
 from rest_framework.settings import api_settings
 from rest_framework.views import APIView
 
@@ -17,18 +18,31 @@ class SchemaView(APIView):
     public = False
 
     def __init__(self, *args, **kwargs):
-        super(SchemaView, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         if self.renderer_classes is None:
-            if renderers.BrowsableAPIRenderer in api_settings.DEFAULT_RENDERER_CLASSES:
+            if coreapi.is_enabled():
                 self.renderer_classes = [
-                    renderers.CoreJSONRenderer,
-                    renderers.BrowsableAPIRenderer,
+                    renderers.CoreAPIOpenAPIRenderer,
+                    renderers.CoreJSONRenderer
                 ]
             else:
-                self.renderer_classes = [renderers.CoreJSONRenderer]
+                self.renderer_classes = [
+                    renderers.OpenAPIRenderer,
+                    renderers.JSONOpenAPIRenderer,
+                ]
+            if renderers.BrowsableAPIRenderer in api_settings.DEFAULT_RENDERER_CLASSES:
+                self.renderer_classes += [renderers.BrowsableAPIRenderer]
 
     def get(self, request, *args, **kwargs):
         schema = self.schema_generator.get_schema(request, self.public)
         if schema is None:
             raise exceptions.PermissionDenied()
         return Response(schema)
+
+    def handle_exception(self, exc):
+        # Schema renderers do not render exceptions, so re-perform content
+        # negotiation with default renderers.
+        self.renderer_classes = api_settings.DEFAULT_RENDERER_CLASSES
+        neg = self.perform_content_negotiation(self.request, force=True)
+        self.request.accepted_renderer, self.request.accepted_media_type = neg
+        return super().handle_exception(exc)
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index fb4b8d393..742fa6577 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -10,12 +10,11 @@ python primitives.
 2. The process of marshalling between python primitives and request and
 response content is handled by parsers and renderers.
 """
-from __future__ import unicode_literals
-
 import copy
 import inspect
 import traceback
-from collections import Mapping, OrderedDict
+from collections import OrderedDict
+from collections.abc import Mapping
 
 from django.core.exceptions import ImproperlyConfigured
 from django.core.exceptions import ValidationError as DjangoValidationError
@@ -23,11 +22,11 @@ from django.db import models
 from django.db.models import DurationField as ModelDurationField
 from django.db.models.fields import Field as DjangoModelField
 from django.db.models.fields import FieldDoesNotExist
-from django.utils import six, timezone
+from django.utils import timezone
 from django.utils.functional import cached_property
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
-from rest_framework.compat import postgres_fields, unicode_to_repr
+from rest_framework.compat import postgres_fields
 from rest_framework.exceptions import ErrorDetail, ValidationError
 from rest_framework.fields import get_error_detail, set_value
 from rest_framework.settings import api_settings
@@ -115,14 +114,14 @@ class BaseSerializer(Field):
         self.partial = kwargs.pop('partial', False)
         self._context = kwargs.pop('context', {})
         kwargs.pop('many', None)
-        super(BaseSerializer, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def __new__(cls, *args, **kwargs):
         # We override this method in order to automagically create
         # `ListSerializer` classes instead when `many=True` is set.
         if kwargs.pop('many', False):
             return cls.many_init(*args, **kwargs)
-        return super(BaseSerializer, cls).__new__(cls, *args, **kwargs)
+        return super().__new__(cls, *args, **kwargs)
 
     @classmethod
     def many_init(cls, *args, **kwargs):
@@ -315,7 +314,7 @@ class SerializerMetaclass(type):
 
     def __new__(cls, name, bases, attrs):
         attrs['_declared_fields'] = cls._get_declared_fields(bases, attrs)
-        return super(SerializerMetaclass, cls).__new__(cls, name, bases, attrs)
+        return super().__new__(cls, name, bases, attrs)
 
 
 def as_serializer_error(exc):
@@ -344,8 +343,7 @@ def as_serializer_error(exc):
     }
 
 
-@six.add_metaclass(SerializerMetaclass)
-class Serializer(BaseSerializer):
+class Serializer(BaseSerializer, metaclass=SerializerMetaclass):
     default_error_messages = {
         'invalid': _('Invalid data. Expected a dictionary, but got {datatype}.')
     }
@@ -393,7 +391,7 @@ class Serializer(BaseSerializer):
         # Used by the lazily-evaluated `validators` property.
         meta = getattr(self, 'Meta', None)
         validators = getattr(meta, 'validators', None)
-        return validators[:] if validators else []
+        return list(validators) if validators else []
 
     def get_initial(self):
         if hasattr(self, 'initial_data'):
@@ -461,9 +459,12 @@ class Serializer(BaseSerializer):
         """
         Add read_only fields with defaults to value before running validators.
         """
-        to_validate = self._read_only_defaults()
-        to_validate.update(value)
-        super(Serializer, self).run_validators(to_validate)
+        if isinstance(value, dict):
+            to_validate = self._read_only_defaults()
+            to_validate.update(value)
+        else:
+            to_validate = value
+        super().run_validators(to_validate)
 
     def to_internal_value(self, data):
         """
@@ -532,7 +533,7 @@ class Serializer(BaseSerializer):
         return attrs
 
     def __repr__(self):
-        return unicode_to_repr(representation.serializer_repr(self, indent=1))
+        return representation.serializer_repr(self, indent=1)
 
     # The following are used for accessing `BoundField` instances on the
     # serializer, for the purposes of presenting a form-like API onto the
@@ -557,12 +558,12 @@ class Serializer(BaseSerializer):
 
     @property
     def data(self):
-        ret = super(Serializer, self).data
+        ret = super().data
         return ReturnDict(ret, serializer=self)
 
     @property
     def errors(self):
-        ret = super(Serializer, self).errors
+        ret = super().errors
         if isinstance(ret, list) and len(ret) == 1 and getattr(ret[0], 'code', None) == 'null':
             # Edge case. Provide a more descriptive error than
             # "this field may not be null", when no data is passed.
@@ -588,11 +589,11 @@ class ListSerializer(BaseSerializer):
         self.allow_empty = kwargs.pop('allow_empty', True)
         assert self.child is not None, '`child` is a required argument.'
         assert not inspect.isclass(self.child), '`child` has not been instantiated.'
-        super(ListSerializer, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.child.bind(field_name='', parent=self)
 
     def bind(self, field_name, parent):
-        super(ListSerializer, self).bind(field_name, parent)
+        super().bind(field_name, parent)
         self.partial = self.parent.partial
 
     def get_initial(self):
@@ -755,19 +756,19 @@ class ListSerializer(BaseSerializer):
         return not bool(self._errors)
 
     def __repr__(self):
-        return unicode_to_repr(representation.list_repr(self, indent=1))
+        return representation.list_repr(self, indent=1)
 
     # Include a backlink to the serializer class on return objects.
     # Allows renderers such as HTMLFormRenderer to get the full field info.
 
     @property
     def data(self):
-        ret = super(ListSerializer, self).data
+        ret = super().data
         return ReturnList(ret, serializer=self)
 
     @property
     def errors(self):
-        ret = super(ListSerializer, self).errors
+        ret = super().errors
         if isinstance(ret, list) and len(ret) == 1 and getattr(ret[0], 'code', None) == 'null':
             # Edge case. Provide a more descriptive error than
             # "this field may not be null", when no data is passed.
@@ -1477,7 +1478,7 @@ class ModelSerializer(Serializer):
         # If the validators have been declared explicitly then use that.
         validators = getattr(getattr(self, 'Meta', None), 'validators', None)
         if validators is not None:
-            return validators[:]
+            return list(validators)
 
         # Otherwise use the default set of validators.
         return (
diff --git a/rest_framework/settings.py b/rest_framework/settings.py
index 6c581f8e8..3520eae36 100644
--- a/rest_framework/settings.py
+++ b/rest_framework/settings.py
@@ -18,13 +18,9 @@ This module provides the `api_setting` object, that is used to access
 REST framework settings, checking for user settings first, then falling
 back to the defaults.
 """
-from __future__ import unicode_literals
-
-from importlib import import_module
-
 from django.conf import settings
 from django.test.signals import setting_changed
-from django.utils import six
+from django.utils.module_loading import import_string
 
 from rest_framework import ISO_8601
 
@@ -56,7 +52,7 @@ DEFAULTS = {
     'DEFAULT_FILTER_BACKENDS': (),
 
     # Schema
-    'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema',
+    'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.openapi.AutoSchema',
 
     # Throttling
     'DEFAULT_THROTTLE_RATES': {
@@ -166,7 +162,7 @@ def perform_import(val, setting_name):
     """
     if val is None:
         return None
-    elif isinstance(val, six.string_types):
+    elif isinstance(val, str):
         return import_from_string(val, setting_name)
     elif isinstance(val, (list, tuple)):
         return [import_from_string(item, setting_name) for item in val]
@@ -178,16 +174,13 @@ def import_from_string(val, setting_name):
     Attempt to import a class from a string representation.
     """
     try:
-        # Nod to tastypie's use of importlib.
-        module_path, class_name = val.rsplit('.', 1)
-        module = import_module(module_path)
-        return getattr(module, class_name)
-    except (ImportError, AttributeError) as e:
+        return import_string(val)
+    except ImportError as e:
         msg = "Could not import '%s' for API setting '%s'. %s: %s." % (val, setting_name, e.__class__.__name__, e)
         raise ImportError(msg)
 
 
-class APISettings(object):
+class APISettings:
     """
     A settings object, that allows API settings to be accessed as properties.
     For example:
@@ -232,7 +225,7 @@ class APISettings(object):
         return val
 
     def __check_user_settings(self, user_settings):
-        SETTINGS_DOC = "http://www.django-rest-framework.org/api-guide/settings/"
+        SETTINGS_DOC = "https://www.django-rest-framework.org/api-guide/settings/"
         for setting in REMOVED_SETTINGS:
             if setting in user_settings:
                 raise RuntimeError("The '%s' setting has been removed. Please refer to '%s' for available settings." % (setting, SETTINGS_DOC))
diff --git a/rest_framework/static/rest_framework/css/bootstrap-theme.min.css b/rest_framework/static/rest_framework/css/bootstrap-theme.min.css
index 5b8a17d0f..30c85f627 100644
--- a/rest_framework/static/rest_framework/css/bootstrap-theme.min.css
+++ b/rest_framework/static/rest_framework/css/bootstrap-theme.min.css
@@ -1,11 +1,6 @@
-@import url("https://fonts.googleapis.com/css?family=Roboto:400,500,700");/*!
- * bootswatch v3.3.7
- * Homepage: http://bootswatch.com
- * Copyright 2012-2016 Thomas Park
- * Licensed under MIT
- * Based on Bootstrap
-*//*!
- * Bootstrap v3.3.7 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+/*!
+ * Bootstrap v3.4.0 (https://getbootstrap.com/)
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- *//*! normalize.css v3.0.3 | MIT License | github.com/necolas/normalize.css */html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}audio,canvas,progress,video{display:inline-block;vertical-align:baseline}audio:not([controls]){display:none;height:0}[hidden],template{display:none}a{background-color:transparent}a:active,a:hover{outline:0}abbr[title]{border-bottom:1px dotted}b,strong{font-weight:bold}dfn{font-style:italic}h1{font-size:2em;margin:0.67em 0}mark{background:#ff0;color:#000}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sup{top:-0.5em}sub{bottom:-0.25em}img{border:0}svg:not(:root){overflow:hidden}figure{margin:1em 40px}hr{-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box;height:0}pre{overflow:auto}code,kbd,pre,samp{font-family:monospace, monospace;font-size:1em}button,input,optgroup,select,textarea{color:inherit;font:inherit;margin:0}button{overflow:visible}button,select{text-transform:none}button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}button[disabled],html input[disabled]{cursor:default}button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}input{line-height:normal}input[type="checkbox"],input[type="radio"]{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;padding:0}input[type="number"]::-webkit-inner-spin-button,input[type="number"]::-webkit-outer-spin-button{height:auto}input[type="search"]{-webkit-appearance:textfield;-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box}input[type="search"]::-webkit-search-cancel-button,input[type="search"]::-webkit-search-decoration{-webkit-appearance:none}fieldset{border:1px solid #c0c0c0;margin:0 2px;padding:0.35em 0.625em 0.75em}legend{border:0;padding:0}textarea{overflow:auto}optgroup{font-weight:bold}table{border-collapse:collapse;border-spacing:0}td,th{padding:0}/*! 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+/*# sourceMappingURL=bootstrap-theme.min.css.map */
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diff --git a/rest_framework/static/rest_framework/css/bootstrap.min.css b/rest_framework/static/rest_framework/css/bootstrap.min.css
index ed3905e0e..7f3562ec2 100644
--- a/rest_framework/static/rest_framework/css/bootstrap.min.css
+++ b/rest_framework/static/rest_framework/css/bootstrap.min.css
@@ -1,6 +1,6 @@
 /*!
- * Bootstrap v3.3.7 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+ * Bootstrap v3.4.0 (https://getbootstrap.com/)
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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diff --git a/rest_framework/static/rest_framework/docs/js/jquery.json-view.min.js b/rest_framework/static/rest_framework/docs/js/jquery.json-view.min.js
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diff --git a/rest_framework/static/rest_framework/js/bootstrap.min.js b/rest_framework/static/rest_framework/js/bootstrap.min.js
index 9bcd2fcca..4cd821990 100644
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t[0]-e[0]}).each(function(){t.offsets.push(this[0]),t.targets.push(this[1])})},n.prototype.process=function(){var t,e=this.$scrollElement.scrollTop()+this.options.offset,i=this.getScrollHeight(),o=this.options.offset+i-this.$scrollElement.height(),n=this.offsets,s=this.targets,a=this.activeTarget;if(this.scrollHeight!=i&&this.refresh(),o<=e)return a!=(t=s[s.length-1])&&this.activate(t);if(a&&e<n[0])return this.activeTarget=null,this.clear();for(t=n.length;t--;)a!=s[t]&&e>=n[t]&&(n[t+1]===undefined||e<n[t+1])&&this.activate(s[t])},n.prototype.activate=function(t){this.activeTarget=t,this.clear();var e=this.selector+'[data-target="'+t+'"],'+this.selector+'[href="'+t+'"]',i=s(e).parents("li").addClass("active");i.parent(".dropdown-menu").length&&(i=i.closest("li.dropdown").addClass("active")),i.trigger("activate.bs.scrollspy")},n.prototype.clear=function(){s(this.selector).parentsUntil(this.options.target,".active").removeClass("active")};var 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\ No newline at end of file
diff --git a/rest_framework/static/rest_framework/js/csrf.js b/rest_framework/static/rest_framework/js/csrf.js
index 97c8d0124..6e4bf39a7 100644
--- a/rest_framework/static/rest_framework/js/csrf.js
+++ b/rest_framework/static/rest_framework/js/csrf.js
@@ -38,7 +38,7 @@ function sameOrigin(url) {
     !(/^(\/\/|http:|https:).*/.test(url));
 }
 
-var csrftoken = getCookie(window.drf.csrfCookieName);
+var csrftoken = window.drf.csrfToken;
 
 $.ajaxSetup({
   beforeSend: function(xhr, settings) {
diff --git a/rest_framework/status.py b/rest_framework/status.py
index 4b4561cfc..1489b440c 100644
--- a/rest_framework/status.py
+++ b/rest_framework/status.py
@@ -5,7 +5,6 @@ See RFC 2616 - https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
 And RFC 6585 - https://tools.ietf.org/html/rfc6585
 And RFC 4918 - https://tools.ietf.org/html/rfc4918
 """
-from __future__ import unicode_literals
 
 
 def is_informational(code):
diff --git a/rest_framework/templates/rest_framework/admin.html b/rest_framework/templates/rest_framework/admin.html
index faa37a586..f058b2694 100644
--- a/rest_framework/templates/rest_framework/admin.html
+++ b/rest_framework/templates/rest_framework/admin.html
@@ -34,7 +34,7 @@
               <div class="container">
                 <span>
                   {% block branding %}
-                    <a class='navbar-brand' rel="nofollow" href='http://www.django-rest-framework.org'>
+                    <a class='navbar-brand' rel="nofollow" href='https://www.django-rest-framework.org/'>
                       Django REST framework
                     </a>
                   {% endblock %}
@@ -247,7 +247,7 @@
         <script>
           window.drf = {
             csrfHeaderName: "{{ csrf_header_name|default:'X-CSRFToken' }}",
-            csrfCookieName: "{{ csrf_cookie_name|default:'csrftoken' }}"
+            csrfToken: "{{ csrf_token }}"
           };
         </script>
         <script src="{% static "rest_framework/js/jquery-3.3.1.min.js" %}"></script>
diff --git a/rest_framework/templates/rest_framework/base.html b/rest_framework/templates/rest_framework/base.html
index eb7a96995..6d740f2b5 100644
--- a/rest_framework/templates/rest_framework/base.html
+++ b/rest_framework/templates/rest_framework/base.html
@@ -38,7 +38,7 @@
           <div class="container">
             <span>
               {% block branding %}
-                <a class='navbar-brand' rel="nofollow" href='http://www.django-rest-framework.org'>
+                <a class='navbar-brand' rel="nofollow" href='https://www.django-rest-framework.org/'>
                     Django REST framework
                 </a>
               {% endblock %}
@@ -76,6 +76,8 @@
           {% block content %}
 
           <div class="region"  aria-label="{% trans "request form" %}">
+          {% block request_forms %}
+          
           {% if 'GET' in allowed_methods %}
             <form id="get-form" class="pull-right">
               <fieldset>
@@ -148,6 +150,8 @@
               {% trans "Filters" %}
             </button>
           {% endif %}
+
+          {% endblock request_forms %}
           </div>
 
             <div class="content-main" role="main"  aria-label="{% trans "main content" %}">
@@ -171,10 +175,10 @@
               </div>
 
               <div class="response-info" aria-label="{% trans "response info" %}">
-                <pre class="prettyprint"><span class="meta nocode"><b>HTTP {{ response.status_code }} {{ response.status_text }}</b>{% autoescape off %}{% for key, val in response_headers|items %}
+                <pre class="prettyprint"><span class="meta nocode"><b>HTTP {{ response.status_code }} {{ response.status_text }}</b>{% for key, val in response_headers|items %}
 <b>{{ key }}:</b> <span class="lit">{{ val|break_long_headers|urlize_quoted_links }}</span>{% endfor %}
 
-</span>{{ content|urlize_quoted_links }}</pre>{% endautoescape %}
+</span>{{ content|urlize_quoted_links }}</pre>
               </div>
             </div>
 
@@ -201,7 +205,7 @@
                               {% csrf_token %}
                               {{ post_form }}
                               <div class="form-actions">
-                                <button class="btn btn-primary" title="Make a POST request on the {{ name }} resource">POST</button>
+                                <button class="btn btn-primary js-tooltip" title="Make a POST request on the {{ name }} resource">POST</button>
                               </div>
                             </fieldset>
                           </form>
@@ -215,7 +219,7 @@
                           <fieldset>
                             {% include "rest_framework/raw_data_form.html" %}
                             <div class="form-actions">
-                              <button class="btn btn-primary" title="Make a POST request on the {{ name }} resource">POST</button>
+                              <button class="btn btn-primary js-tooltip" title="Make a POST request on the {{ name }} resource">POST</button>
                             </div>
                           </fieldset>
                         </form>
@@ -286,7 +290,7 @@
       <script>
         window.drf = {
           csrfHeaderName: "{{ csrf_header_name|default:'X-CSRFToken' }}",
-          csrfCookieName: "{{ csrf_cookie_name|default:'csrftoken' }}"
+          csrfToken: "{% if request %}{{ csrf_token }}{% endif %}"
         };
       </script>
       <script src="{% static "rest_framework/js/jquery-3.3.1.min.js" %}"></script>
diff --git a/rest_framework/templates/rest_framework/docs/auth/session.html b/rest_framework/templates/rest_framework/docs/auth/session.html
index d09d3f2aa..59430d95e 100644
--- a/rest_framework/templates/rest_framework/docs/auth/session.html
+++ b/rest_framework/templates/rest_framework/docs/auth/session.html
@@ -12,7 +12,7 @@
     <div class="modal-body">
 
         {% if user.is_authenticated %}
-          <h4 class="text-center">You are logged in as {{ user.username }}.</h4>
+          <h4 class="text-center">You are logged in as {{ user.get_username }}.</h4>
         {% else %}
 
           <div class="text-center">
diff --git a/rest_framework/templates/rest_framework/docs/langs/shell.html b/rest_framework/templates/rest_framework/docs/langs/shell.html
index 24137e4ae..e5f2a0322 100644
--- a/rest_framework/templates/rest_framework/docs/langs/shell.html
+++ b/rest_framework/templates/rest_framework/docs/langs/shell.html
@@ -3,4 +3,4 @@
 $ coreapi get {{ document.url }}{% if schema_format %} --format {{ schema_format }}{% endif %}
 
 # Interact with the API endpoint
-$ coreapi action {% if section_key %}{{ section_key }} {% endif %}{{ link_key }}{% for field in link.fields %} -p {{ field.name }}=...{% endfor %}{% endcode %}</code></pre>
+$ coreapi action {% if section_key %}{{ section_key }} {% endif %}{{ link_key|cut:"> " }}{% for field in link.fields %} -p {{ field.name }}=...{% endfor %}{% endcode %}</code></pre>
diff --git a/rest_framework/templatetags/rest_framework.py b/rest_framework/templatetags/rest_framework.py
index 36aa9e8b3..56e2994ea 100644
--- a/rest_framework/templatetags/rest_framework.py
+++ b/rest_framework/templatetags/rest_framework.py
@@ -1,12 +1,9 @@
-from __future__ import absolute_import, unicode_literals
-
 import re
 from collections import OrderedDict
 
 from django import template
 from django.template import loader
 from django.urls import NoReverseMatch, reverse
-from django.utils import six
 from django.utils.encoding import force_text, iri_to_uri
 from django.utils.html import escape, format_html, smart_urlquote
 from django.utils.safestring import SafeData, mark_safe
@@ -187,7 +184,7 @@ def add_class(value, css_class):
     In the case of REST Framework, the filter is used to add Bootstrap-specific
     classes to the forms.
     """
-    html = six.text_type(value)
+    html = str(value)
     match = class_re.search(html)
     if match:
         m = re.search(r'^%s$|^%s\s|\s%s\s|\s%s$' % (css_class, css_class,
@@ -204,7 +201,7 @@ def add_class(value, css_class):
 @register.filter
 def format_value(value):
     if getattr(value, 'is_hyperlink', False):
-        name = six.text_type(value.obj)
+        name = str(value.obj)
         return mark_safe('<a href=%s>%s</a>' % (value, escape(name)))
     if value is None or isinstance(value, bool):
         return mark_safe('<code>%s</code>' % {True: 'true', False: 'false', None: 'null'}[value])
@@ -219,7 +216,7 @@ def format_value(value):
         template = loader.get_template('rest_framework/admin/dict_value.html')
         context = {'value': value}
         return template.render(context)
-    elif isinstance(value, six.string_types):
+    elif isinstance(value, str):
         if (
             (value.startswith('http:') or value.startswith('https:')) and not
             re.search(r'\s', value)
@@ -229,7 +226,7 @@ def format_value(value):
             return mark_safe('<a href="mailto:{value}">{value}</a>'.format(value=escape(value)))
         elif '\n' in value:
             return mark_safe('<pre>%s</pre>' % escape(value))
-    return six.text_type(value)
+    return str(value)
 
 
 @register.filter
@@ -314,7 +311,7 @@ def smart_urlquote_wrapper(matched_url):
         return None
 
 
-@register.filter
+@register.filter(needs_autoescape=True)
 def urlize_quoted_links(text, trim_url_limit=None, nofollow=True, autoescape=True):
     """
     Converts any URLs in text into clickable links.
@@ -336,6 +333,12 @@ def urlize_quoted_links(text, trim_url_limit=None, nofollow=True, autoescape=Tru
         return limit is not None and (len(x) > limit and ('%s...' % x[:max(0, limit - 3)])) or x
 
     safe_input = isinstance(text, SafeData)
+
+    # Unfortunately, Django built-in cannot be used here, because escaping
+    # is to be performed on words, which have been forcibly coerced to text
+    def conditional_escape(text):
+        return escape(text) if autoescape and not safe_input else text
+
     words = word_split_re.split(force_text(text))
     for i, word in enumerate(words):
         if '.' in word or '@' in word or ':' in word:
@@ -376,21 +379,15 @@ def urlize_quoted_links(text, trim_url_limit=None, nofollow=True, autoescape=Tru
             # Make link.
             if url:
                 trimmed = trim_url(middle)
-                if autoescape and not safe_input:
-                    lead, trail = escape(lead), escape(trail)
-                    url, trimmed = escape(url), escape(trimmed)
+                lead, trail = conditional_escape(lead), conditional_escape(trail)
+                url, trimmed = conditional_escape(url), conditional_escape(trimmed)
                 middle = '<a href="%s"%s>%s</a>' % (url, nofollow_attr, trimmed)
-                words[i] = mark_safe('%s%s%s' % (lead, middle, trail))
+                words[i] = '%s%s%s' % (lead, middle, trail)
             else:
-                if safe_input:
-                    words[i] = mark_safe(word)
-                elif autoescape:
-                    words[i] = escape(word)
-        elif safe_input:
-            words[i] = mark_safe(word)
-        elif autoescape:
-            words[i] = escape(word)
-    return ''.join(words)
+                words[i] = conditional_escape(word)
+        else:
+            words[i] = conditional_escape(word)
+    return mark_safe(''.join(words))
 
 
 @register.filter
diff --git a/rest_framework/test.py b/rest_framework/test.py
index edacf0066..852d4919e 100644
--- a/rest_framework/test.py
+++ b/rest_framework/test.py
@@ -1,9 +1,5 @@
-# -- coding: utf-8 --
-
 # Note that we import as `DjangoRequestFactory` and `DjangoClient` in order
 # to make it harder for the user to import the wrong thing without realizing.
-from __future__ import unicode_literals
-
 import io
 from importlib import import_module
 
@@ -14,7 +10,6 @@ from django.test import override_settings, testcases
 from django.test.client import Client as DjangoClient
 from django.test.client import ClientHandler
 from django.test.client import RequestFactory as DjangoRequestFactory
-from django.utils import six
 from django.utils.encoding import force_bytes
 from django.utils.http import urlencode
 
@@ -32,7 +27,7 @@ if requests is not None:
         def get_all(self, key, default):
             return self.getheaders(key)
 
-    class MockOriginalResponse(object):
+    class MockOriginalResponse:
         def __init__(self, headers):
             self.msg = HeaderDict(headers)
             self.closed = False
@@ -109,7 +104,7 @@ if requests is not None:
 
     class RequestsClient(requests.Session):
         def __init__(self, *args, **kwargs):
-            super(RequestsClient, self).__init__(*args, **kwargs)
+            super().__init__(*args, **kwargs)
             adapter = DjangoTestAdapter()
             self.mount('http://', adapter)
             self.mount('https://', adapter)
@@ -117,7 +112,7 @@ if requests is not None:
         def request(self, method, url, *args, **kwargs):
             if not url.startswith('http'):
                 raise ValueError('Missing "http:" or "https:". Use a fully qualified URL, eg "http://testserver%s"' % url)
-            return super(RequestsClient, self).request(method, url, *args, **kwargs)
+            return super().request(method, url, *args, **kwargs)
 
 else:
     def RequestsClient(*args, **kwargs):
@@ -129,7 +124,7 @@ if coreapi is not None:
         def __init__(self, *args, **kwargs):
             self._session = RequestsClient()
             kwargs['transports'] = [coreapi.transports.HTTPTransport(session=self.session)]
-            return super(CoreAPIClient, self).__init__(*args, **kwargs)
+            return super().__init__(*args, **kwargs)
 
         @property
         def session(self):
@@ -149,7 +144,7 @@ class APIRequestFactory(DjangoRequestFactory):
         self.renderer_classes = {}
         for cls in self.renderer_classes_list:
             self.renderer_classes[cls.format] = cls
-        super(APIRequestFactory, self).__init__(**defaults)
+        super().__init__(**defaults)
 
     def _encode_data(self, data, format=None, content_type=None):
         """
@@ -171,7 +166,7 @@ class APIRequestFactory(DjangoRequestFactory):
             format = format or self.default_format
 
             assert format in self.renderer_classes, (
-                "Invalid format '{0}'. Available formats are {1}. "
+                "Invalid format '{}'. Available formats are {}. "
                 "Set TEST_REQUEST_RENDERER_CLASSES to enable "
                 "extra request formats.".format(
                     format,
@@ -184,12 +179,12 @@ class APIRequestFactory(DjangoRequestFactory):
             ret = renderer.render(data)
 
             # Determine the content-type header from the renderer
-            content_type = "{0}; charset={1}".format(
+            content_type = "{}; charset={}".format(
                 renderer.media_type, renderer.charset
             )
 
             # Coerce text to bytes if required.
-            if isinstance(ret, six.text_type):
+            if isinstance(ret, str):
                 ret = bytes(ret.encode(renderer.charset))
 
         return ret, content_type
@@ -202,8 +197,7 @@ class APIRequestFactory(DjangoRequestFactory):
             # Fix to support old behavior where you have the arguments in the
             # url. See #1461.
             query_string = force_bytes(path.split('?')[1])
-            if six.PY3:
-                query_string = query_string.decode('iso-8859-1')
+            query_string = query_string.decode('iso-8859-1')
             r['QUERY_STRING'] = query_string
         r.update(extra)
         return self.generic('GET', path, **r)
@@ -234,11 +228,11 @@ class APIRequestFactory(DjangoRequestFactory):
         if content_type is not None:
             extra['CONTENT_TYPE'] = str(content_type)
 
-        return super(APIRequestFactory, self).generic(
+        return super().generic(
             method, path, data, content_type, secure, **extra)
 
     def request(self, **kwargs):
-        request = super(APIRequestFactory, self).request(**kwargs)
+        request = super().request(**kwargs)
         request._dont_enforce_csrf_checks = not self.enforce_csrf_checks
         return request
 
@@ -252,18 +246,18 @@ class ForceAuthClientHandler(ClientHandler):
     def __init__(self, *args, **kwargs):
         self._force_user = None
         self._force_token = None
-        super(ForceAuthClientHandler, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_response(self, request):
         # This is the simplest place we can hook into to patch the
         # request object.
         force_authenticate(request, self._force_user, self._force_token)
-        return super(ForceAuthClientHandler, self).get_response(request)
+        return super().get_response(request)
 
 
 class APIClient(APIRequestFactory, DjangoClient):
     def __init__(self, enforce_csrf_checks=False, **defaults):
-        super(APIClient, self).__init__(**defaults)
+        super().__init__(**defaults)
         self.handler = ForceAuthClientHandler(enforce_csrf_checks)
         self._credentials = {}
 
@@ -286,17 +280,17 @@ class APIClient(APIRequestFactory, DjangoClient):
     def request(self, **kwargs):
         # Ensure that any credentials set get added to every request.
         kwargs.update(self._credentials)
-        return super(APIClient, self).request(**kwargs)
+        return super().request(**kwargs)
 
     def get(self, path, data=None, follow=False, **extra):
-        response = super(APIClient, self).get(path, data=data, **extra)
+        response = super().get(path, data=data, **extra)
         if follow:
             response = self._handle_redirects(response, **extra)
         return response
 
     def post(self, path, data=None, format=None, content_type=None,
              follow=False, **extra):
-        response = super(APIClient, self).post(
+        response = super().post(
             path, data=data, format=format, content_type=content_type, **extra)
         if follow:
             response = self._handle_redirects(response, **extra)
@@ -304,7 +298,7 @@ class APIClient(APIRequestFactory, DjangoClient):
 
     def put(self, path, data=None, format=None, content_type=None,
             follow=False, **extra):
-        response = super(APIClient, self).put(
+        response = super().put(
             path, data=data, format=format, content_type=content_type, **extra)
         if follow:
             response = self._handle_redirects(response, **extra)
@@ -312,7 +306,7 @@ class APIClient(APIRequestFactory, DjangoClient):
 
     def patch(self, path, data=None, format=None, content_type=None,
               follow=False, **extra):
-        response = super(APIClient, self).patch(
+        response = super().patch(
             path, data=data, format=format, content_type=content_type, **extra)
         if follow:
             response = self._handle_redirects(response, **extra)
@@ -320,7 +314,7 @@ class APIClient(APIRequestFactory, DjangoClient):
 
     def delete(self, path, data=None, format=None, content_type=None,
                follow=False, **extra):
-        response = super(APIClient, self).delete(
+        response = super().delete(
             path, data=data, format=format, content_type=content_type, **extra)
         if follow:
             response = self._handle_redirects(response, **extra)
@@ -328,7 +322,7 @@ class APIClient(APIRequestFactory, DjangoClient):
 
     def options(self, path, data=None, format=None, content_type=None,
                 follow=False, **extra):
-        response = super(APIClient, self).options(
+        response = super().options(
             path, data=data, format=format, content_type=content_type, **extra)
         if follow:
             response = self._handle_redirects(response, **extra)
@@ -342,7 +336,7 @@ class APIClient(APIRequestFactory, DjangoClient):
         self.handler._force_token = None
 
         if self.session:
-            super(APIClient, self).logout()
+            super().logout()
 
 
 class APITransactionTestCase(testcases.TransactionTestCase):
@@ -389,11 +383,11 @@ class URLPatternsTestCase(testcases.SimpleTestCase):
         cls._module.urlpatterns = cls.urlpatterns
 
         cls._override.enable()
-        super(URLPatternsTestCase, cls).setUpClass()
+        super().setUpClass()
 
     @classmethod
     def tearDownClass(cls):
-        super(URLPatternsTestCase, cls).tearDownClass()
+        super().tearDownClass()
         cls._override.disable()
 
         if hasattr(cls, '_module_urlpatterns'):
diff --git a/rest_framework/throttling.py b/rest_framework/throttling.py
index 834ced148..0ba2ba66b 100644
--- a/rest_framework/throttling.py
+++ b/rest_framework/throttling.py
@@ -1,8 +1,6 @@
 """
 Provides various throttling policies.
 """
-from __future__ import unicode_literals
-
 import time
 
 from django.core.cache import cache as default_cache
@@ -11,7 +9,7 @@ from django.core.exceptions import ImproperlyConfigured
 from rest_framework.settings import api_settings
 
 
-class BaseThrottle(object):
+class BaseThrottle:
     """
     Rate throttling of requests.
     """
@@ -232,7 +230,7 @@ class ScopedRateThrottle(SimpleRateThrottle):
         self.num_requests, self.duration = self.parse_rate(self.rate)
 
         # We can now proceed as normal.
-        return super(ScopedRateThrottle, self).allow_request(request, view)
+        return super().allow_request(request, view)
 
     def get_cache_key(self, request, view):
         """
diff --git a/rest_framework/urlpatterns.py b/rest_framework/urlpatterns.py
index ab3a74978..831d344dd 100644
--- a/rest_framework/urlpatterns.py
+++ b/rest_framework/urlpatterns.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import include, url
 
 from rest_framework.compat import (
diff --git a/rest_framework/urls.py b/rest_framework/urls.py
index 0e4c2661b..482a0a364 100644
--- a/rest_framework/urls.py
+++ b/rest_framework/urls.py
@@ -11,8 +11,6 @@ your API requires authentication:
 
 You should make sure your authentication settings include `SessionAuthentication`.
 """
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 from django.contrib.auth import views
 
diff --git a/rest_framework/utils/breadcrumbs.py b/rest_framework/utils/breadcrumbs.py
index e0374ffd0..54990e9f6 100644
--- a/rest_framework/utils/breadcrumbs.py
+++ b/rest_framework/utils/breadcrumbs.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.urls import get_script_prefix, resolve
 
 
diff --git a/rest_framework/utils/encoders.py b/rest_framework/utils/encoders.py
index fe8f76dd5..a7875a868 100644
--- a/rest_framework/utils/encoders.py
+++ b/rest_framework/utils/encoders.py
@@ -1,15 +1,13 @@
 """
 Helper classes for parsers.
 """
-from __future__ import absolute_import, unicode_literals
-
 import datetime
 import decimal
 import json  # noqa
 import uuid
 
 from django.db.models.query import QuerySet
-from django.utils import six, timezone
+from django.utils import timezone
 from django.utils.encoding import force_text
 from django.utils.functional import Promise
 
@@ -39,17 +37,17 @@ class JSONEncoder(json.JSONEncoder):
             representation = obj.isoformat()
             return representation
         elif isinstance(obj, datetime.timedelta):
-            return six.text_type(obj.total_seconds())
+            return str(obj.total_seconds())
         elif isinstance(obj, decimal.Decimal):
             # Serializers will coerce decimals to strings by default.
             return float(obj)
         elif isinstance(obj, uuid.UUID):
-            return six.text_type(obj)
+            return str(obj)
         elif isinstance(obj, QuerySet):
             return tuple(obj)
-        elif isinstance(obj, six.binary_type):
+        elif isinstance(obj, bytes):
             # Best-effort for binary blobs. See #4187.
-            return obj.decode('utf-8')
+            return obj.decode()
         elif hasattr(obj, 'tolist'):
             # Numpy arrays and array scalars.
             return obj.tolist()
@@ -65,4 +63,4 @@ class JSONEncoder(json.JSONEncoder):
                 pass
         elif hasattr(obj, '__iter__'):
             return tuple(item for item in obj)
-        return super(JSONEncoder, self).default(obj)
+        return super().default(obj)
diff --git a/rest_framework/utils/field_mapping.py b/rest_framework/utils/field_mapping.py
index 7d9a849b9..ee3ea6bb5 100644
--- a/rest_framework/utils/field_mapping.py
+++ b/rest_framework/utils/field_mapping.py
@@ -16,7 +16,7 @@ NUMERIC_FIELD_TYPES = (
 )
 
 
-class ClassLookupDict(object):
+class ClassLookupDict:
     """
     Takes a dictionary with classes as keys.
     Lookups against this object will traverses the object's inheritance
@@ -88,6 +88,9 @@ def get_field_kwargs(field_name, model_field):
     if decimal_places is not None:
         kwargs['decimal_places'] = decimal_places
 
+    if isinstance(model_field, models.SlugField):
+        kwargs['allow_unicode'] = model_field.allow_unicode
+
     if isinstance(model_field, models.TextField) or (postgres_fields and isinstance(model_field, postgres_fields.JSONField)):
         kwargs['style'] = {'base_template': 'textarea.html'}
 
@@ -103,8 +106,7 @@ def get_field_kwargs(field_name, model_field):
     if model_field.null and not isinstance(model_field, models.NullBooleanField):
         kwargs['allow_null'] = True
 
-    if model_field.blank and (isinstance(model_field, models.CharField) or
-                              isinstance(model_field, models.TextField)):
+    if model_field.blank and (isinstance(model_field, (models.CharField, models.TextField))):
         kwargs['allow_blank'] = True
 
     if isinstance(model_field, models.FilePathField):
@@ -191,9 +193,7 @@ def get_field_kwargs(field_name, model_field):
     # Ensure that max_length is passed explicitly as a keyword arg,
     # rather than as a validator.
     max_length = getattr(model_field, 'max_length', None)
-    if max_length is not None and (isinstance(model_field, models.CharField) or
-                                   isinstance(model_field, models.TextField) or
-                                   isinstance(model_field, models.FileField)):
+    if max_length is not None and (isinstance(model_field, (models.CharField, models.TextField, models.FileField))):
         kwargs['max_length'] = max_length
         validator_kwarg = [
             validator for validator in validator_kwarg
@@ -247,6 +247,12 @@ def get_relation_kwargs(field_name, relation_info):
     if to_field:
         kwargs['to_field'] = to_field
 
+    limit_choices_to = model_field and model_field.get_limit_choices_to()
+    if limit_choices_to:
+        if not isinstance(limit_choices_to, models.Q):
+            limit_choices_to = models.Q(**limit_choices_to)
+        kwargs['queryset'] = kwargs['queryset'].filter(limit_choices_to)
+
     if has_through_model:
         kwargs['read_only'] = True
         kwargs.pop('queryset', None)
diff --git a/rest_framework/utils/formatting.py b/rest_framework/utils/formatting.py
index aa805f14e..4e003f614 100644
--- a/rest_framework/utils/formatting.py
+++ b/rest_framework/utils/formatting.py
@@ -1,8 +1,6 @@
 """
 Utility functions to return a formatted name and description for a given view.
 """
-from __future__ import unicode_literals
-
 import re
 
 from django.utils.encoding import force_text
diff --git a/rest_framework/utils/json.py b/rest_framework/utils/json.py
index cb5572380..1c1e69bf1 100644
--- a/rest_framework/utils/json.py
+++ b/rest_framework/utils/json.py
@@ -5,9 +5,6 @@ REST framework should always import this wrapper module in order to maintain
 spec-compliant encoding/decoding. Support for non-standard features should be
 handled by users at the renderer and parser layer.
 """
-
-from __future__ import absolute_import
-
 import functools
 import json  # noqa
 
diff --git a/rest_framework/utils/mediatypes.py b/rest_framework/utils/mediatypes.py
index f4acf4807..40bdf2615 100644
--- a/rest_framework/utils/mediatypes.py
+++ b/rest_framework/utils/mediatypes.py
@@ -3,10 +3,7 @@ Handling of media types, as found in HTTP Content-Type and Accept headers.
 
 See https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7
 """
-from __future__ import unicode_literals
-
 from django.http.multipartparser import parse_header
-from django.utils.encoding import python_2_unicode_compatible
 
 from rest_framework import HTTP_HEADER_ENCODING
 
@@ -46,8 +43,7 @@ def order_by_precedence(media_type_lst):
     return [media_types for media_types in ret if media_types]
 
 
-@python_2_unicode_compatible
-class _MediaType(object):
+class _MediaType:
     def __init__(self, media_type_str):
         self.orig = '' if (media_type_str is None) else media_type_str
         self.full_type, self.params = parse_header(self.orig.encode(HTTP_HEADER_ENCODING))
diff --git a/rest_framework/utils/representation.py b/rest_framework/utils/representation.py
index deeaf1f63..3916eb686 100644
--- a/rest_framework/utils/representation.py
+++ b/rest_framework/utils/representation.py
@@ -2,16 +2,12 @@
 Helper functions for creating user-friendly representations
 of serializer classes and serializer fields.
 """
-from __future__ import unicode_literals
-
 import re
 
 from django.db import models
 from django.utils.encoding import force_text
 from django.utils.functional import Promise
 
-from rest_framework.compat import unicode_repr
-
 
 def manager_repr(value):
     model = value.model
@@ -34,7 +30,7 @@ def smart_repr(value):
     if isinstance(value, Promise) and value._delegate_text:
         value = force_text(value)
 
-    value = unicode_repr(value)
+    value = repr(value)
 
     # Representations like u'help text'
     # should simply be presented as 'help text'
@@ -45,9 +41,7 @@ def smart_repr(value):
     # <django.core.validators.RegexValidator object at 0x1047af050>
     # Should be presented as
     # <django.core.validators.RegexValidator object>
-    value = re.sub(' at 0x[0-9A-Fa-f]{4,32}>', '>', value)
-
-    return value
+    return re.sub(' at 0x[0-9A-Fa-f]{4,32}>', '>', value)
 
 
 def field_repr(field, force_many=False):
diff --git a/rest_framework/utils/serializer_helpers.py b/rest_framework/utils/serializer_helpers.py
index 6b662a66c..80aea27d3 100644
--- a/rest_framework/utils/serializer_helpers.py
+++ b/rest_framework/utils/serializer_helpers.py
@@ -1,11 +1,8 @@
-from __future__ import unicode_literals
-
-import collections
 from collections import OrderedDict
+from collections.abc import MutableMapping
 
 from django.utils.encoding import force_text
 
-from rest_framework.compat import unicode_to_repr
 from rest_framework.utils import json
 
 
@@ -18,7 +15,7 @@ class ReturnDict(OrderedDict):
 
     def __init__(self, *args, **kwargs):
         self.serializer = kwargs.pop('serializer')
-        super(ReturnDict, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def copy(self):
         return ReturnDict(self, serializer=self.serializer)
@@ -41,7 +38,7 @@ class ReturnList(list):
 
     def __init__(self, *args, **kwargs):
         self.serializer = kwargs.pop('serializer')
-        super(ReturnList, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def __repr__(self):
         return list.__repr__(self)
@@ -52,7 +49,7 @@ class ReturnList(list):
         return (list, (list(self),))
 
 
-class BoundField(object):
+class BoundField:
     """
     A field object that also includes `.value` and `.error` properties.
     Returned when iterating over a serializer instance,
@@ -74,9 +71,9 @@ class BoundField(object):
         return self._field.__class__
 
     def __repr__(self):
-        return unicode_to_repr('<%s value=%s errors=%s>' % (
+        return '<%s value=%s errors=%s>' % (
             self.__class__.__name__, self.value, self.errors
-        ))
+        )
 
     def as_form_field(self):
         value = '' if (self.value is None or self.value is False) else self.value
@@ -104,9 +101,9 @@ class NestedBoundField(BoundField):
     """
 
     def __init__(self, field, value, errors, prefix=''):
-        if value is None or value is '':
+        if value is None or value == '':
             value = {}
-        super(NestedBoundField, self).__init__(field, value, errors, prefix)
+        super().__init__(field, value, errors, prefix)
 
     def __iter__(self):
         for field in self.fields.values():
@@ -130,7 +127,7 @@ class NestedBoundField(BoundField):
         return self.__class__(self._field, values, self.errors, self._prefix)
 
 
-class BindingDict(collections.MutableMapping):
+class BindingDict(MutableMapping):
     """
     This dict-like object is used to store fields on a serializer.
 
diff --git a/rest_framework/utils/urls.py b/rest_framework/utils/urls.py
index 3766928d4..3534e5f49 100644
--- a/rest_framework/utils/urls.py
+++ b/rest_framework/utils/urls.py
@@ -1,5 +1,6 @@
+from urllib import parse
+
 from django.utils.encoding import force_str
-from django.utils.six.moves.urllib import parse as urlparse
 
 
 def replace_query_param(url, key, val):
@@ -7,11 +8,11 @@ def replace_query_param(url, key, val):
     Given a URL and a key/val pair, set or replace an item in the query
     parameters of the URL, and return the new URL.
     """
-    (scheme, netloc, path, query, fragment) = urlparse.urlsplit(force_str(url))
-    query_dict = urlparse.parse_qs(query, keep_blank_values=True)
+    (scheme, netloc, path, query, fragment) = parse.urlsplit(force_str(url))
+    query_dict = parse.parse_qs(query, keep_blank_values=True)
     query_dict[force_str(key)] = [force_str(val)]
-    query = urlparse.urlencode(sorted(list(query_dict.items())), doseq=True)
-    return urlparse.urlunsplit((scheme, netloc, path, query, fragment))
+    query = parse.urlencode(sorted(list(query_dict.items())), doseq=True)
+    return parse.urlunsplit((scheme, netloc, path, query, fragment))
 
 
 def remove_query_param(url, key):
@@ -19,8 +20,8 @@ def remove_query_param(url, key):
     Given a URL and a key/val pair, remove an item in the query
     parameters of the URL, and return the new URL.
     """
-    (scheme, netloc, path, query, fragment) = urlparse.urlsplit(force_str(url))
-    query_dict = urlparse.parse_qs(query, keep_blank_values=True)
+    (scheme, netloc, path, query, fragment) = parse.urlsplit(force_str(url))
+    query_dict = parse.parse_qs(query, keep_blank_values=True)
     query_dict.pop(key, None)
-    query = urlparse.urlencode(sorted(list(query_dict.items())), doseq=True)
-    return urlparse.urlunsplit((scheme, netloc, path, query, fragment))
+    query = parse.urlencode(sorted(list(query_dict.items())), doseq=True)
+    return parse.urlunsplit((scheme, netloc, path, query, fragment))
diff --git a/rest_framework/validators.py b/rest_framework/validators.py
index 2ea3e5ac1..1cbe31b5e 100644
--- a/rest_framework/validators.py
+++ b/rest_framework/validators.py
@@ -6,12 +6,9 @@ This gives us better separation of concerns, allows us to use single-step
 object creation, and makes it possible to switch between using the implicit
 `ModelSerializer` class and an equivalent explicit `Serializer` class.
 """
-from __future__ import unicode_literals
-
 from django.db import DataError
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
-from rest_framework.compat import unicode_to_repr
 from rest_framework.exceptions import ValidationError
 from rest_framework.utils.representation import smart_repr
 
@@ -33,7 +30,7 @@ def qs_filter(queryset, **kwargs):
         return queryset.none()
 
 
-class UniqueValidator(object):
+class UniqueValidator:
     """
     Validator that corresponds to `unique=True` on a model field.
 
@@ -82,13 +79,13 @@ class UniqueValidator(object):
             raise ValidationError(self.message, code='unique')
 
     def __repr__(self):
-        return unicode_to_repr('<%s(queryset=%s)>' % (
+        return '<%s(queryset=%s)>' % (
             self.__class__.__name__,
             smart_repr(self.queryset)
-        ))
+        )
 
 
-class UniqueTogetherValidator(object):
+class UniqueTogetherValidator:
     """
     Validator that corresponds to `unique_together = (...)` on a model class.
 
@@ -170,14 +167,14 @@ class UniqueTogetherValidator(object):
             raise ValidationError(message, code='unique')
 
     def __repr__(self):
-        return unicode_to_repr('<%s(queryset=%s, fields=%s)>' % (
+        return '<%s(queryset=%s, fields=%s)>' % (
             self.__class__.__name__,
             smart_repr(self.queryset),
             smart_repr(self.fields)
-        ))
+        )
 
 
-class BaseUniqueForValidator(object):
+class BaseUniqueForValidator:
     message = None
     missing_message = _('This field is required.')
 
@@ -236,12 +233,12 @@ class BaseUniqueForValidator(object):
             }, code='unique')
 
     def __repr__(self):
-        return unicode_to_repr('<%s(queryset=%s, field=%s, date_field=%s)>' % (
+        return '<%s(queryset=%s, field=%s, date_field=%s)>' % (
             self.__class__.__name__,
             smart_repr(self.queryset),
             smart_repr(self.field),
             smart_repr(self.date_field)
-        ))
+        )
 
 
 class UniqueForDateValidator(BaseUniqueForValidator):
diff --git a/rest_framework/versioning.py b/rest_framework/versioning.py
index 5c9a7ade1..8c35a1a58 100644
--- a/rest_framework/versioning.py
+++ b/rest_framework/versioning.py
@@ -1,9 +1,6 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import re
 
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework import exceptions
 from rest_framework.compat import unicode_http_header
@@ -13,7 +10,7 @@ from rest_framework.templatetags.rest_framework import replace_query_param
 from rest_framework.utils.mediatypes import _MediaType
 
 
-class BaseVersioning(object):
+class BaseVersioning:
     default_version = api_settings.DEFAULT_VERSION
     allowed_versions = api_settings.ALLOWED_VERSIONS
     version_param = api_settings.VERSION_PARAM
@@ -75,6 +72,9 @@ class URLPathVersioning(BaseVersioning):
 
     def determine_version(self, request, *args, **kwargs):
         version = kwargs.get(self.version_param, self.default_version)
+        if version is None:
+            version = self.default_version
+
         if not self.is_allowed_version(version):
             raise exceptions.NotFound(self.invalid_version_message)
         return version
@@ -84,7 +84,7 @@ class URLPathVersioning(BaseVersioning):
             kwargs = {} if (kwargs is None) else kwargs
             kwargs[self.version_param] = request.version
 
-        return super(URLPathVersioning, self).reverse(
+        return super().reverse(
             viewname, args, kwargs, request, format, **extra
         )
 
@@ -130,7 +130,7 @@ class NamespaceVersioning(BaseVersioning):
     def reverse(self, viewname, args=None, kwargs=None, request=None, format=None, **extra):
         if request.version is not None:
             viewname = self.get_versioned_viewname(viewname, request)
-        return super(NamespaceVersioning, self).reverse(
+        return super().reverse(
             viewname, args, kwargs, request, format, **extra
         )
 
@@ -176,7 +176,7 @@ class QueryParameterVersioning(BaseVersioning):
         return version
 
     def reverse(self, viewname, args=None, kwargs=None, request=None, format=None, **extra):
-        url = super(QueryParameterVersioning, self).reverse(
+        url = super().reverse(
             viewname, args, kwargs, request, format, **extra
         )
         if request.version is not None:
diff --git a/rest_framework/views.py b/rest_framework/views.py
index 70af84816..6ef7021d4 100644
--- a/rest_framework/views.py
+++ b/rest_framework/views.py
@@ -1,8 +1,6 @@
 """
 Provides an APIView class that is the base of all views in REST framework.
 """
-from __future__ import unicode_literals
-
 from django.conf import settings
 from django.core.exceptions import PermissionDenied
 from django.db import connection, models, transaction
@@ -23,7 +21,7 @@ from rest_framework.utils import formatting
 
 def get_view_name(view):
     """
-    Given a view class, return a textual name to represent the view.
+    Given a view instance, return a textual name to represent the view.
     This name is used in the browsable API, and in OPTIONS responses.
 
     This function is the default for the `VIEW_NAME_FUNCTION` setting.
@@ -48,7 +46,7 @@ def get_view_name(view):
 
 def get_view_description(view, html=False):
     """
-    Given a view class, return a textual description to represent the view.
+    Given a view instance, return a textual description to represent the view.
     This name is used in the browsable API, and in OPTIONS responses.
 
     This function is the default for the `VIEW_DESCRIPTION_FUNCTION` setting.
@@ -137,7 +135,7 @@ class APIView(View):
                 )
             cls.queryset._fetch_all = force_evaluation
 
-        view = super(APIView, cls).as_view(**initkwargs)
+        view = super().as_view(**initkwargs)
         view.cls = cls
         view.initkwargs = initkwargs
 
@@ -463,7 +461,7 @@ class APIView(View):
             renderer_format = getattr(request.accepted_renderer, 'format')
             use_plaintext_traceback = renderer_format not in ('html', 'api', 'admin')
             request.force_plaintext_errors(use_plaintext_traceback)
-        raise
+        raise exc
 
     # Note: Views are made CSRF exempt from within `as_view` as to prevent
     # accidental removal of this exemption in cases where `dispatch` needs to
diff --git a/rest_framework/viewsets.py b/rest_framework/viewsets.py
index 412475351..ad5633854 100644
--- a/rest_framework/viewsets.py
+++ b/rest_framework/viewsets.py
@@ -16,8 +16,6 @@ automatically.
     router.register(r'users', UserViewSet, 'user')
     urlpatterns = router.urls
 """
-from __future__ import unicode_literals
-
 from collections import OrderedDict
 from functools import update_wrapper
 from inspect import getmembers
@@ -34,7 +32,7 @@ def _is_extra_action(attr):
     return hasattr(attr, 'mapping')
 
 
-class ViewSetMixin(object):
+class ViewSetMixin:
     """
     This is the magic.
 
@@ -134,7 +132,7 @@ class ViewSetMixin(object):
         """
         Set the `.action` attribute on the view, depending on the request method.
         """
-        request = super(ViewSetMixin, self).initialize_request(request, *args, **kwargs)
+        request = super().initialize_request(request, *args, **kwargs)
         method = request.method.lower()
         if method == 'options':
             # This is a special case as we always provide handling for the
@@ -183,7 +181,8 @@ class ViewSetMixin(object):
             try:
                 url_name = '%s-%s' % (self.basename, action.url_name)
                 url = reverse(url_name, self.args, self.kwargs, request=self.request)
-                action_urls[action.name] = url
+                view = self.__class__(**action.kwargs)
+                action_urls[view.get_view_name()] = url
             except NoReverseMatch:
                 pass  # URL requires additional arguments, ignore
 
diff --git a/runtests.py b/runtests.py
index 16b47ce2a..19513cdbf 100755
--- a/runtests.py
+++ b/runtests.py
@@ -1,6 +1,4 @@
-#! /usr/bin/env python
-from __future__ import print_function
-
+#! /usr/bin/env python3
 import subprocess
 import sys
 
@@ -13,7 +11,7 @@ PYTEST_ARGS = {
 
 FLAKE8_ARGS = ['rest_framework', 'tests']
 
-ISORT_ARGS = ['--recursive', '--check-only', '--diff', '-o' 'uritemplate', '-p', 'tests', 'rest_framework', 'tests']
+ISORT_ARGS = ['--recursive', '--check-only', '--diff', 'rest_framework', 'tests']
 
 
 def exit_on_failure(ret, message=None):
diff --git a/setup.cfg b/setup.cfg
index c95134600..c021fdde0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,3 @@
-[bdist_wheel]
-universal = 1
-
 [metadata]
 license_file = LICENSE.md
 
@@ -17,8 +14,8 @@ skip=.tox
 atomic=true
 multi_line_output=5
 known_standard_library=types
-known_third_party=pytest,_pytest,django,pytz
-known_first_party=rest_framework
+known_third_party=pytest,_pytest,django,pytz,uritemplate
+known_first_party=rest_framework,tests
 
 [coverage:run]
 # NOTE: source is ignored with pytest-cov (but uses the same).
diff --git a/setup.py b/setup.py
index 90582e078..6c0d64239 100755
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,4 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
+#!/usr/bin/env python3
 import os
 import re
 import shutil
@@ -8,6 +7,34 @@ from io import open
 
 from setuptools import find_packages, setup
 
+CURRENT_PYTHON = sys.version_info[:2]
+REQUIRED_PYTHON = (3, 5)
+
+# This check and everything above must remain compatible with Python 2.7.
+if CURRENT_PYTHON < REQUIRED_PYTHON:
+    sys.stderr.write("""
+==========================
+Unsupported Python version
+==========================
+
+This version of Django REST Framework requires Python {}.{}, but you're trying
+to install it on Python {}.{}.
+
+This may be because you are using a version of pip that doesn't
+understand the python_requires classifier. Make sure you
+have pip >= 9.0 and setuptools >= 24.2, then try again:
+
+    $ python -m pip install --upgrade pip setuptools
+    $ python -m pip install djangorestframework
+
+This will install the latest version of Django REST Framework which works on
+your version of Python. If you can't upgrade your pip (or Python), request
+an older version of Django REST Framework:
+
+    $ python -m pip install "django<3.10"
+""".format(*(REQUIRED_PYTHON + CURRENT_PYTHON)))
+    sys.exit(1)
+
 
 def read(f):
     return open(f, 'r', encoding='utf-8').read()
@@ -42,7 +69,7 @@ if sys.argv[-1] == 'publish':
 setup(
     name='djangorestframework',
     version=version,
-    url='http://www.django-rest-framework.org',
+    url='https://www.django-rest-framework.org/',
     license='BSD',
     description='Web APIs for Django, made easy.',
     long_description=read('README.md'),
@@ -52,7 +79,7 @@ setup(
     packages=find_packages(exclude=['tests*']),
     include_package_data=True,
     install_requires=[],
-    python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
+    python_requires=">=3.5",
     zip_safe=False,
     classifiers=[
         'Development Status :: 5 - Production/Stable',
@@ -61,16 +88,16 @@ setup(
         'Framework :: Django :: 1.11',
         'Framework :: Django :: 2.0',
         'Framework :: Django :: 2.1',
+        'Framework :: Django :: 2.2',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: BSD License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3 :: Only',
         'Topic :: Internet :: WWW/HTTP',
     ]
 )
diff --git a/tests/authentication/__init__.py b/tests/authentication/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/authentication/migrations/0001_initial.py b/tests/authentication/migrations/0001_initial.py
new file mode 100644
index 000000000..548b3576b
--- /dev/null
+++ b/tests/authentication/migrations/0001_initial.py
@@ -0,0 +1,21 @@
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='CustomToken',
+            fields=[
+                ('key', models.CharField(max_length=40, primary_key=True, serialize=False)),
+                ('user', models.OneToOneField(on_delete=models.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]
diff --git a/tests/authentication/migrations/__init__.py b/tests/authentication/migrations/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/authentication/models.py b/tests/authentication/models.py
new file mode 100644
index 000000000..1a721de4d
--- /dev/null
+++ b/tests/authentication/models.py
@@ -0,0 +1,7 @@
+from django.conf import settings
+from django.db import models
+
+
+class CustomToken(models.Model):
+    key = models.CharField(max_length=40, primary_key=True)
+    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
diff --git a/tests/test_authentication.py b/tests/authentication/test_authentication.py
similarity index 96%
rename from tests/test_authentication.py
rename to tests/authentication/test_authentication.py
index f2714acb5..927989028 100644
--- a/tests/test_authentication.py
+++ b/tests/authentication/test_authentication.py
@@ -1,17 +1,11 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
 import base64
 
 import pytest
 from django.conf import settings
 from django.conf.urls import include, url
 from django.contrib.auth.models import User
-from django.db import models
 from django.http import HttpResponse
 from django.test import TestCase, override_settings
-from django.utils import six
 
 from rest_framework import (
     HTTP_HEADER_ENCODING, exceptions, permissions, renderers, status
@@ -26,14 +20,11 @@ from rest_framework.response import Response
 from rest_framework.test import APIClient, APIRequestFactory
 from rest_framework.views import APIView
 
+from .models import CustomToken
+
 factory = APIRequestFactory()
 
 
-class CustomToken(models.Model):
-    key = models.CharField(max_length=40, primary_key=True)
-    user = models.OneToOneField(User, on_delete=models.CASCADE)
-
-
 class CustomTokenAuthentication(TokenAuthentication):
     model = CustomToken
 
@@ -87,7 +78,7 @@ urlpatterns = [
 ]
 
 
-@override_settings(ROOT_URLCONF='tests.test_authentication')
+@override_settings(ROOT_URLCONF=__name__)
 class BasicAuthTests(TestCase):
     """Basic authentication"""
     def setUp(self):
@@ -169,7 +160,7 @@ class BasicAuthTests(TestCase):
         assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
 
-@override_settings(ROOT_URLCONF='tests.test_authentication')
+@override_settings(ROOT_URLCONF=__name__)
 class SessionAuthTests(TestCase):
     """User session authentication"""
     def setUp(self):
@@ -192,7 +183,7 @@ class SessionAuthTests(TestCase):
         cf. [#1810](https://github.com/encode/django-rest-framework/pull/1810)
         """
         response = self.csrf_client.get('/auth/login/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert '<label for="id_username">Username:</label>' in content
 
     def test_post_form_session_auth_failing_csrf(self):
@@ -257,7 +248,7 @@ class SessionAuthTests(TestCase):
         assert response.status_code == status.HTTP_403_FORBIDDEN
 
 
-class BaseTokenAuthTests(object):
+class BaseTokenAuthTests:
     """Token authentication"""
     model = None
     path = None
@@ -370,7 +361,7 @@ class BaseTokenAuthTests(object):
         assert response.status_code == status.HTTP_401_UNAUTHORIZED
 
 
-@override_settings(ROOT_URLCONF='tests.test_authentication')
+@override_settings(ROOT_URLCONF=__name__)
 class TokenAuthTests(BaseTokenAuthTests, TestCase):
     model = Token
     path = '/token/'
@@ -385,7 +376,7 @@ class TokenAuthTests(BaseTokenAuthTests, TestCase):
         """Ensure generate_key returns a string"""
         token = self.model()
         key = token.generate_key()
-        assert isinstance(key, six.string_types)
+        assert isinstance(key, str)
 
     def test_token_login_json(self):
         """Ensure token login view using JSON POST works."""
@@ -429,13 +420,13 @@ class TokenAuthTests(BaseTokenAuthTests, TestCase):
         assert response.data['token'] == self.key
 
 
-@override_settings(ROOT_URLCONF='tests.test_authentication')
+@override_settings(ROOT_URLCONF=__name__)
 class CustomTokenAuthTests(BaseTokenAuthTests, TestCase):
     model = CustomToken
     path = '/customtoken/'
 
 
-@override_settings(ROOT_URLCONF='tests.test_authentication')
+@override_settings(ROOT_URLCONF=__name__)
 class CustomKeywordTokenAuthTests(BaseTokenAuthTests, TestCase):
     model = Token
     path = '/customkeywordtoken/'
@@ -538,7 +529,7 @@ class BasicAuthenticationUnitTests(TestCase):
     def test_basic_authentication_raises_error_if_user_not_active(self):
         from rest_framework import authentication
 
-        class MockUser(object):
+        class MockUser:
             is_active = False
         old_authenticate = authentication.authenticate
         authentication.authenticate = lambda **kwargs: MockUser()
@@ -549,7 +540,7 @@ class BasicAuthenticationUnitTests(TestCase):
         authentication.authenticate = old_authenticate
 
 
-@override_settings(ROOT_URLCONF='tests.test_authentication',
+@override_settings(ROOT_URLCONF=__name__,
                    AUTHENTICATION_BACKENDS=('django.contrib.auth.backends.RemoteUserBackend',))
 class RemoteUserAuthenticationUnitTests(TestCase):
     def setUp(self):
diff --git a/tests/browsable_api/auth_urls.py b/tests/browsable_api/auth_urls.py
index 0e9379717..7530c5e40 100644
--- a/tests/browsable_api/auth_urls.py
+++ b/tests/browsable_api/auth_urls.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import include, url
 
 from .views import MockView
diff --git a/tests/browsable_api/no_auth_urls.py b/tests/browsable_api/no_auth_urls.py
index 5fc95c727..348bfe1c0 100644
--- a/tests/browsable_api/no_auth_urls.py
+++ b/tests/browsable_api/no_auth_urls.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 
 from .views import MockView
diff --git a/tests/browsable_api/test_browsable_api.py b/tests/browsable_api/test_browsable_api.py
index 684d7ae14..17644c2ac 100644
--- a/tests/browsable_api/test_browsable_api.py
+++ b/tests/browsable_api/test_browsable_api.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.contrib.auth.models import User
 from django.test import TestCase, override_settings
 
@@ -26,18 +24,18 @@ class DropdownWithAuthTests(TestCase):
     def test_name_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert 'john' in content
 
     def test_logout_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert '>Log out<' in content
 
     def test_login_shown_when_logged_out(self):
         response = self.client.get('/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert '>Log in<' in content
 
 
@@ -61,16 +59,16 @@ class NoDropdownWithoutAuthTests(TestCase):
     def test_name_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert 'john' in content
 
     def test_dropdown_not_shown_when_logged_in(self):
         self.client.login(username=self.username, password=self.password)
         response = self.client.get('/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert '<li class="dropdown">' not in content
 
     def test_dropdown_not_shown_when_logged_out(self):
         response = self.client.get('/')
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert '<li class="dropdown">' not in content
diff --git a/tests/browsable_api/test_browsable_nested_api.py b/tests/browsable_api/test_browsable_nested_api.py
index 8f38b3c4e..f945d2a43 100644
--- a/tests/browsable_api/test_browsable_nested_api.py
+++ b/tests/browsable_api/test_browsable_nested_api.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 from django.test import TestCase
 from django.test.utils import override_settings
@@ -36,7 +34,7 @@ class DropdownWithAuthTests(TestCase):
     def test_login(self):
         response = self.client.get('/api/')
         assert 200 == response.status_code
-        content = response.content.decode('utf-8')
+        content = response.content.decode()
         assert 'form action="/api/"' in content
         assert 'input name="nested.one"' in content
         assert 'input name="nested.two"' in content
diff --git a/tests/browsable_api/views.py b/tests/browsable_api/views.py
index 03758f10b..e1cf13a1e 100644
--- a/tests/browsable_api/views.py
+++ b/tests/browsable_api/views.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from rest_framework import authentication, renderers
 from rest_framework.response import Response
 from rest_framework.views import APIView
diff --git a/tests/conftest.py b/tests/conftest.py
index 27558c02b..ac29e4a42 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -56,6 +56,8 @@ def pytest_configure(config):
             'django.contrib.staticfiles',
             'rest_framework',
             'rest_framework.authtoken',
+            'tests.authentication',
+            'tests.generic_relations',
             'tests.importable',
             'tests',
         ),
diff --git a/tests/generic_relations/__init__.py b/tests/generic_relations/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/generic_relations/migrations/0001_initial.py b/tests/generic_relations/migrations/0001_initial.py
new file mode 100644
index 000000000..ea04d8d67
--- /dev/null
+++ b/tests/generic_relations/migrations/0001_initial.py
@@ -0,0 +1,36 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Bookmark',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('url', models.URLField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Note',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('text', models.TextField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('tag', models.SlugField()),
+                ('object_id', models.PositiveIntegerField()),
+                ('content_type', models.ForeignKey(on_delete=models.CASCADE, to='contenttypes.ContentType')),
+            ],
+        ),
+    ]
diff --git a/tests/generic_relations/migrations/__init__.py b/tests/generic_relations/migrations/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/generic_relations/models.py b/tests/generic_relations/models.py
new file mode 100644
index 000000000..20df3e4a2
--- /dev/null
+++ b/tests/generic_relations/models.py
@@ -0,0 +1,40 @@
+from django.contrib.contenttypes.fields import (
+    GenericForeignKey, GenericRelation
+)
+from django.contrib.contenttypes.models import ContentType
+from django.db import models
+
+
+class Tag(models.Model):
+    """
+    Tags have a descriptive slug, and are attached to an arbitrary object.
+    """
+    tag = models.SlugField()
+    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
+    object_id = models.PositiveIntegerField()
+    tagged_item = GenericForeignKey('content_type', 'object_id')
+
+    def __str__(self):
+        return self.tag
+
+
+class Bookmark(models.Model):
+    """
+    A URL bookmark that may have multiple tags attached.
+    """
+    url = models.URLField()
+    tags = GenericRelation(Tag)
+
+    def __str__(self):
+        return 'Bookmark: %s' % self.url
+
+
+class Note(models.Model):
+    """
+    A textual note that may have multiple tags attached.
+    """
+    text = models.TextField()
+    tags = GenericRelation(Tag)
+
+    def __str__(self):
+        return 'Note: %s' % self.text
diff --git a/tests/test_relations_generic.py b/tests/generic_relations/test_generic_relations.py
similarity index 62%
rename from tests/test_relations_generic.py
rename to tests/generic_relations/test_generic_relations.py
index a3798b0a3..33f8ea1d0 100644
--- a/tests/test_relations_generic.py
+++ b/tests/generic_relations/test_generic_relations.py
@@ -1,52 +1,8 @@
-from __future__ import unicode_literals
-
-from django.contrib.contenttypes.fields import (
-    GenericForeignKey, GenericRelation
-)
-from django.contrib.contenttypes.models import ContentType
-from django.db import models
 from django.test import TestCase
-from django.utils.encoding import python_2_unicode_compatible
 
 from rest_framework import serializers
 
-
-@python_2_unicode_compatible
-class Tag(models.Model):
-    """
-    Tags have a descriptive slug, and are attached to an arbitrary object.
-    """
-    tag = models.SlugField()
-    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
-    object_id = models.PositiveIntegerField()
-    tagged_item = GenericForeignKey('content_type', 'object_id')
-
-    def __str__(self):
-        return self.tag
-
-
-@python_2_unicode_compatible
-class Bookmark(models.Model):
-    """
-    A URL bookmark that may have multiple tags attached.
-    """
-    url = models.URLField()
-    tags = GenericRelation(Tag)
-
-    def __str__(self):
-        return 'Bookmark: %s' % self.url
-
-
-@python_2_unicode_compatible
-class Note(models.Model):
-    """
-    A textual note that may have multiple tags attached.
-    """
-    text = models.TextField()
-    tags = GenericRelation(Tag)
-
-    def __str__(self):
-        return 'Note: %s' % self.text
+from .models import Bookmark, Note, Tag
 
 
 class TestGenericRelations(TestCase):
diff --git a/tests/models.py b/tests/models.py
index 6aeceb934..2c340a3e6 100644
--- a/tests/models.py
+++ b/tests/models.py
@@ -1,9 +1,7 @@
-from __future__ import unicode_literals
-
 import uuid
 
 from django.db import models
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 
 class RESTFrameworkModel(models.Model):
@@ -52,6 +50,20 @@ class ForeignKeySource(RESTFrameworkModel):
                                on_delete=models.CASCADE)
 
 
+class ForeignKeySourceWithLimitedChoices(RESTFrameworkModel):
+    target = models.ForeignKey(ForeignKeyTarget, help_text='Target',
+                               verbose_name='Target',
+                               limit_choices_to={"name__startswith": "limited-"},
+                               on_delete=models.CASCADE)
+
+
+class ForeignKeySourceWithQLimitedChoices(RESTFrameworkModel):
+    target = models.ForeignKey(ForeignKeyTarget, help_text='Target',
+                               verbose_name='Target',
+                               limit_choices_to=models.Q(name__startswith="limited-"),
+                               on_delete=models.CASCADE)
+
+
 # Nullable ForeignKey
 class NullableForeignKeySource(RESTFrameworkModel):
     name = models.CharField(max_length=100)
diff --git a/tests/schemas/__init__.py b/tests/schemas/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/test_schemas.py b/tests/schemas/test_coreapi.py
similarity index 84%
rename from tests/test_schemas.py
rename to tests/schemas/test_coreapi.py
index 6d7091da2..66275ade9 100644
--- a/tests/test_schemas.py
+++ b/tests/schemas/test_coreapi.py
@@ -16,20 +16,21 @@ from rest_framework.routers import DefaultRouter, SimpleRouter
 from rest_framework.schemas import (
     AutoSchema, ManualSchema, SchemaGenerator, get_schema_view
 )
+from rest_framework.schemas.coreapi import field_to_schema
 from rest_framework.schemas.generators import EndpointEnumerator
-from rest_framework.schemas.inspectors import field_to_schema
 from rest_framework.schemas.utils import is_list_view
 from rest_framework.test import APIClient, APIRequestFactory
 from rest_framework.utils import formatting
 from rest_framework.views import APIView
 from rest_framework.viewsets import GenericViewSet, ModelViewSet
 
-from .models import BasicModel, ForeignKeySource
+from . import views
+from ..models import BasicModel, ForeignKeySource, ManyToManySource
 
 factory = APIRequestFactory()
 
 
-class MockUser(object):
+class MockUser:
     def is_authenticated(self):
         return True
 
@@ -112,15 +113,34 @@ class ExampleViewSet(ModelViewSet):
     def get_serializer(self, *args, **kwargs):
         assert self.request
         assert self.action
-        return super(ExampleViewSet, self).get_serializer(*args, **kwargs)
+        return super().get_serializer(*args, **kwargs)
 
+    @action(methods=['get', 'post'], detail=False)
+    def documented_custom_action(self, request):
+        """
+        get:
+        A description of the get method on the custom action.
 
-if coreapi:
-    schema_view = get_schema_view(title='Example API')
-else:
-    def schema_view(request):
+        post:
+        A description of the post method on the custom action.
+        """
         pass
 
+    @documented_custom_action.mapping.put
+    def put_documented_custom_action(self, request, *args, **kwargs):
+        """
+        A description of the put method on the custom action from mapping.
+        """
+        pass
+
+
+with override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'}):
+    if coreapi:
+        schema_view = get_schema_view(title='Example API')
+    else:
+        def schema_view(request):
+            pass
+
 router = DefaultRouter()
 router.register('example', ExampleViewSet, basename='example')
 urlpatterns = [
@@ -130,7 +150,7 @@ urlpatterns = [
 
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
-@override_settings(ROOT_URLCONF='tests.test_schemas')
+@override_settings(ROOT_URLCONF=__name__, REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestRouterGeneratedSchema(TestCase):
     def test_anonymous_request(self):
         client = APIClient()
@@ -161,6 +181,13 @@ class TestRouterGeneratedSchema(TestCase):
                             description='Custom description.',
                         )
                     },
+                    'documented_custom_action': {
+                        'read': coreapi.Link(
+                            url='/example/documented_custom_action/',
+                            action='get',
+                            description='A description of the get method on the custom action.',
+                        )
+                    },
                     'read': coreapi.Link(
                         url='/example/{id}/',
                         action='get',
@@ -263,6 +290,33 @@ class TestRouterGeneratedSchema(TestCase):
                             description='Deletion description.',
                         ),
                     },
+                    'documented_custom_action': {
+                        'read': coreapi.Link(
+                            url='/example/documented_custom_action/',
+                            action='get',
+                            description='A description of the get method on the custom action.',
+                        ),
+                        'create': coreapi.Link(
+                            url='/example/documented_custom_action/',
+                            action='post',
+                            description='A description of the post method on the custom action.',
+                            encoding='application/json',
+                            fields=[
+                                coreapi.Field('a', required=True, location='form', schema=coreschema.String(title='A', description='A field description')),
+                                coreapi.Field('b', required=False, location='form', schema=coreschema.String(title='B'))
+                            ]
+                        ),
+                        'update': coreapi.Link(
+                            url='/example/documented_custom_action/',
+                            action='put',
+                            description='A description of the put method on the custom action from mapping.',
+                            encoding='application/json',
+                            fields=[
+                                coreapi.Field('a', required=True, location='form', schema=coreschema.String(title='A', description='A field description')),
+                                coreapi.Field('b', required=False, location='form', schema=coreschema.String(title='B'))
+                            ]
+                        ),
+                    },
                     'update': coreapi.Link(
                         url='/example/{id}/',
                         action='put',
@@ -348,12 +402,13 @@ class ExampleDetailView(APIView):
 
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestSchemaGenerator(TestCase):
     def setUp(self):
         self.patterns = [
-            url(r'^example/?$', ExampleListView.as_view()),
-            url(r'^example/(?P<pk>\d+)/?$', ExampleDetailView.as_view()),
-            url(r'^example/(?P<pk>\d+)/sub/?$', ExampleDetailView.as_view()),
+            url(r'^example/?$', views.ExampleListView.as_view()),
+            url(r'^example/(?P<pk>\d+)/?$', views.ExampleDetailView.as_view()),
+            url(r'^example/(?P<pk>\d+)/sub/?$', views.ExampleDetailView.as_view()),
         ]
 
     def test_schema_for_regular_views(self):
@@ -401,12 +456,13 @@ class TestSchemaGenerator(TestCase):
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
 @unittest.skipUnless(path, 'needs Django 2')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestSchemaGeneratorDjango2(TestCase):
     def setUp(self):
         self.patterns = [
-            path('example/', ExampleListView.as_view()),
-            path('example/<int:pk>/', ExampleDetailView.as_view()),
-            path('example/<int:pk>/sub/', ExampleDetailView.as_view()),
+            path('example/', views.ExampleListView.as_view()),
+            path('example/<int:pk>/', views.ExampleDetailView.as_view()),
+            path('example/<int:pk>/sub/', views.ExampleDetailView.as_view()),
         ]
 
     def test_schema_for_regular_views(self):
@@ -453,12 +509,13 @@ class TestSchemaGeneratorDjango2(TestCase):
 
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestSchemaGeneratorNotAtRoot(TestCase):
     def setUp(self):
         self.patterns = [
-            url(r'^api/v1/example/?$', ExampleListView.as_view()),
-            url(r'^api/v1/example/(?P<pk>\d+)/?$', ExampleDetailView.as_view()),
-            url(r'^api/v1/example/(?P<pk>\d+)/sub/?$', ExampleDetailView.as_view()),
+            url(r'^api/v1/example/?$', views.ExampleListView.as_view()),
+            url(r'^api/v1/example/(?P<pk>\d+)/?$', views.ExampleDetailView.as_view()),
+            url(r'^api/v1/example/(?P<pk>\d+)/sub/?$', views.ExampleDetailView.as_view()),
         ]
 
     def test_schema_for_regular_views(self):
@@ -506,6 +563,7 @@ class TestSchemaGeneratorNotAtRoot(TestCase):
 
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestSchemaGeneratorWithMethodLimitedViewSets(TestCase):
     def setUp(self):
         router = DefaultRouter()
@@ -548,6 +606,13 @@ class TestSchemaGeneratorWithMethodLimitedViewSets(TestCase):
                             description='Custom description.',
                         )
                     },
+                    'documented_custom_action': {
+                        'read': coreapi.Link(
+                            url='/example1/documented_custom_action/',
+                            action='get',
+                            description='A description of the get method on the custom action.',
+                        ),
+                    },
                     'read': coreapi.Link(
                         url='/example1/{id}/',
                         action='get',
@@ -563,13 +628,14 @@ class TestSchemaGeneratorWithMethodLimitedViewSets(TestCase):
 
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestSchemaGeneratorWithRestrictedViewSets(TestCase):
     def setUp(self):
         router = DefaultRouter()
         router.register('example1', Http404ExampleViewSet, basename='example1')
         router.register('example2', PermissionDeniedExampleViewSet, basename='example2')
         self.patterns = [
-            url('^example/?$', ExampleListView.as_view()),
+            url('^example/?$', views.ExampleListView.as_view()),
             url(r'^', include(router.urls))
         ]
 
@@ -609,6 +675,7 @@ class ForeignKeySourceView(generics.CreateAPIView):
 
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestSchemaGeneratorWithForeignKey(TestCase):
     def setUp(self):
         self.patterns = [
@@ -642,7 +709,54 @@ class TestSchemaGeneratorWithForeignKey(TestCase):
         assert schema == expected
 
 
+class ManyToManySourceSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ManyToManySource
+        fields = ('id', 'name', 'targets')
+
+
+class ManyToManySourceView(generics.CreateAPIView):
+    queryset = ManyToManySource.objects.all()
+    serializer_class = ManyToManySourceSerializer
+
+
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
+class TestSchemaGeneratorWithManyToMany(TestCase):
+    def setUp(self):
+        self.patterns = [
+            url(r'^example/?$', ManyToManySourceView.as_view()),
+        ]
+
+    def test_schema_for_regular_views(self):
+        """
+        Ensure that AutoField many to many fields are output as Integer.
+        """
+        generator = SchemaGenerator(title='Example API', patterns=self.patterns)
+        schema = generator.get_schema()
+
+        expected = coreapi.Document(
+            url='',
+            title='Example API',
+            content={
+                'example': {
+                    'create': coreapi.Link(
+                        url='/example/',
+                        action='post',
+                        encoding='application/json',
+                        fields=[
+                            coreapi.Field('name', required=True, location='form', schema=coreschema.String(title='Name')),
+                            coreapi.Field('targets', required=True, location='form', schema=coreschema.Array(title='Targets', items=coreschema.Integer())),
+                        ]
+                    )
+                }
+            }
+        )
+        assert schema == expected
+
+
+@unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class Test4605Regression(TestCase):
     def test_4605_regression(self):
         generator = SchemaGenerator()
@@ -658,6 +772,7 @@ class CustomViewInspector(AutoSchema):
     pass
 
 
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestAutoSchema(TestCase):
 
     def test_apiview_schema_descriptor(self):
@@ -673,7 +788,7 @@ class TestAutoSchema(TestCase):
         assert isinstance(view.schema, CustomViewInspector)
 
     def test_set_custom_inspector_class_via_settings(self):
-        with override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'tests.test_schemas.CustomViewInspector'}):
+        with override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'tests.schemas.test_coreapi.CustomViewInspector'}):
             view = APIView()
             assert isinstance(view.schema, CustomViewInspector)
 
@@ -867,6 +982,7 @@ class TestAutoSchema(TestCase):
             self.assertEqual(field_to_schema(case[0]), case[1])
 
 
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 def test_docstring_is_not_stripped_by_get_description():
     class ExampleDocstringAPIView(APIView):
         """
@@ -903,25 +1019,25 @@ def test_docstring_is_not_stripped_by_get_description():
 
 
 # Views for SchemaGenerationExclusionTests
-class ExcludedAPIView(APIView):
-    schema = None
+with override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'}):
+    class ExcludedAPIView(APIView):
+        schema = None
 
-    def get(self, request, *args, **kwargs):
+        def get(self, request, *args, **kwargs):
+            pass
+
+    @api_view(['GET'])
+    @schema(None)
+    def excluded_fbv(request):
+        pass
+
+    @api_view(['GET'])
+    def included_fbv(request):
         pass
 
 
-@api_view(['GET'])
-@schema(None)
-def excluded_fbv(request):
-    pass
-
-
-@api_view(['GET'])
-def included_fbv(request):
-    pass
-
-
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class SchemaGenerationExclusionTests(TestCase):
     def setUp(self):
         self.patterns = [
@@ -973,43 +1089,6 @@ class SchemaGenerationExclusionTests(TestCase):
 
         assert should_include == expected
 
-    def test_deprecations(self):
-        with pytest.warns(DeprecationWarning) as record:
-            @api_view(["GET"], exclude_from_schema=True)
-            def view(request):
-                pass
-
-        assert len(record) == 1
-        assert str(record[0].message) == (
-            "The `exclude_from_schema` argument to `api_view` is deprecated. "
-            "Use the `schema` decorator instead, passing `None`."
-        )
-
-        class OldFashionedExcludedView(APIView):
-            exclude_from_schema = True
-
-            def get(self, request, *args, **kwargs):
-                pass
-
-        patterns = [
-            url('^excluded-old-fashioned/$', OldFashionedExcludedView.as_view()),
-        ]
-
-        inspector = EndpointEnumerator(patterns)
-        with pytest.warns(DeprecationWarning) as record:
-            inspector.get_api_endpoints()
-
-        assert len(record) == 1
-        assert str(record[0].message) == (
-            "The `OldFashionedExcludedView.exclude_from_schema` attribute is "
-            "deprecated. Set `schema = None` instead."
-        )
-
-
-@api_view(["GET"])
-def simple_fbv(request):
-    pass
-
 
 class BasicModelSerializer(serializers.ModelSerializer):
     class Meta:
@@ -1046,11 +1125,16 @@ naming_collisions_router.register(r'collision', NamingCollisionViewSet, basename
 
 
 @pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
 class TestURLNamingCollisions(TestCase):
     """
     Ref: https://github.com/encode/django-rest-framework/issues/4704
     """
     def test_manually_routing_nested_routes(self):
+        @api_view(["GET"])
+        def simple_fbv(request):
+            pass
+
         patterns = [
             url(r'^test', simple_fbv),
             url(r'^test/list/', simple_fbv),
@@ -1156,6 +1240,10 @@ class TestURLNamingCollisions(TestCase):
 
     def test_url_under_same_key_not_replaced_another(self):
 
+        @api_view(["GET"])
+        def simple_fbv(request):
+            pass
+
         patterns = [
             url(r'^test/list/', simple_fbv),
             url(r'^test/(?P<pk>\d+)/list/', simple_fbv),
@@ -1230,10 +1318,8 @@ def test_head_and_options_methods_are_excluded():
     assert inspector.get_allowed_methods(callback) == ["GET"]
 
 
-@pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
-class TestAutoSchemaAllowsFilters(object):
-    class MockAPIView(APIView):
-        filter_backends = [filters.OrderingFilter]
+class MockAPIView(APIView):
+    filter_backends = [filters.OrderingFilter]
 
     def _test(self, method):
         view = self.MockAPIView()
@@ -1277,3 +1363,13 @@ class TestAutoSchemaAllowsFilters(object):
 
     def test_FOO(self):
         assert not self._test('FOO')
+
+
+@pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
+def test_schema_handles_exception():
+    schema_view = get_schema_view(permission_classes=[DenyAllUsingPermissionDenied])
+    request = factory.get('/')
+    response = schema_view(request)
+    response.render()
+    assert response.status_code == 403
+    assert b"You do not have permission to perform this action." in response.content
diff --git a/tests/schemas/test_get_schema_view.py b/tests/schemas/test_get_schema_view.py
new file mode 100644
index 000000000..f582c6495
--- /dev/null
+++ b/tests/schemas/test_get_schema_view.py
@@ -0,0 +1,20 @@
+import pytest
+from django.test import TestCase, override_settings
+
+from rest_framework import renderers
+from rest_framework.schemas import coreapi, get_schema_view, openapi
+
+
+class GetSchemaViewTests(TestCase):
+    """For the get_schema_view() helper."""
+    def test_openapi(self):
+        schema_view = get_schema_view(title="With OpenAPI")
+        assert isinstance(schema_view.initkwargs['schema_generator'], openapi.SchemaGenerator)
+        assert renderers.OpenAPIRenderer in schema_view.cls().renderer_classes
+
+    @pytest.mark.skipif(not coreapi.coreapi, reason='coreapi is not installed')
+    def test_coreapi(self):
+        with override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'}):
+            schema_view = get_schema_view(title="With CoreAPI")
+            assert isinstance(schema_view.initkwargs['schema_generator'], coreapi.SchemaGenerator)
+            assert renderers.CoreAPIOpenAPIRenderer in schema_view.cls().renderer_classes
diff --git a/tests/schemas/test_managementcommand.py b/tests/schemas/test_managementcommand.py
new file mode 100644
index 000000000..e5960f2b0
--- /dev/null
+++ b/tests/schemas/test_managementcommand.py
@@ -0,0 +1,117 @@
+import io
+
+import pytest
+from django.conf.urls import url
+from django.core.management import call_command
+from django.test import TestCase
+from django.test.utils import override_settings
+
+from rest_framework.compat import uritemplate, yaml
+from rest_framework.management.commands import generateschema
+from rest_framework.utils import formatting, json
+from rest_framework.views import APIView
+
+
+class FooView(APIView):
+    def get(self, request):
+        pass
+
+
+urlpatterns = [
+    url(r'^$', FooView.as_view())
+]
+
+
+@override_settings(ROOT_URLCONF=__name__)
+@pytest.mark.skipif(not uritemplate, reason='uritemplate is not installed')
+class GenerateSchemaTests(TestCase):
+    """Tests for management command generateschema."""
+
+    def setUp(self):
+        self.out = io.StringIO()
+
+    def test_command_detects_schema_generation_mode(self):
+        """Switching between CoreAPI & OpenAPI"""
+        command = generateschema.Command()
+        assert command.get_mode() == generateschema.OPENAPI_MODE
+        with override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'}):
+            assert command.get_mode() == generateschema.COREAPI_MODE
+
+    @pytest.mark.skipif(yaml is None, reason='PyYAML is required.')
+    def test_renders_default_schema_with_custom_title_url_and_description(self):
+        call_command('generateschema',
+                     '--title=SampleAPI',
+                     '--url=http://api.sample.com',
+                     '--description=Sample description',
+                     stdout=self.out)
+        # Check valid YAML was output.
+        schema = yaml.load(self.out.getvalue())
+        assert schema['openapi'] == '3.0.2'
+
+    def test_renders_openapi_json_schema(self):
+        call_command('generateschema',
+                     '--format=openapi-json',
+                     stdout=self.out)
+        # Check valid JSON was output.
+        out_json = json.loads(self.out.getvalue())
+        assert out_json['openapi'] == '3.0.2'
+
+    @pytest.mark.skipif(yaml is None, reason='PyYAML is required.')
+    @override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
+    def test_coreapi_renders_default_schema_with_custom_title_url_and_description(self):
+        expected_out = """info:
+                            description: Sample description
+                            title: SampleAPI
+                            version: ''
+                          openapi: 3.0.0
+                          paths:
+                            /:
+                              get:
+                                operationId: list
+                          servers:
+                          - url: http://api.sample.com/
+                          """
+        call_command('generateschema',
+                     '--title=SampleAPI',
+                     '--url=http://api.sample.com',
+                     '--description=Sample description',
+                     stdout=self.out)
+
+        self.assertIn(formatting.dedent(expected_out), self.out.getvalue())
+
+    @override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
+    def test_coreapi_renders_openapi_json_schema(self):
+        expected_out = {
+            "openapi": "3.0.0",
+            "info": {
+                "version": "",
+                "title": "",
+                "description": ""
+            },
+            "servers": [
+                {
+                    "url": ""
+                }
+            ],
+            "paths": {
+                "/": {
+                    "get": {
+                        "operationId": "list"
+                    }
+                }
+            }
+        }
+        call_command('generateschema',
+                     '--format=openapi-json',
+                     stdout=self.out)
+        out_json = json.loads(self.out.getvalue())
+
+        self.assertDictEqual(out_json, expected_out)
+
+    @override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.AutoSchema'})
+    def test_renders_corejson_schema(self):
+        expected_out = """{"_type":"document","":{"list":{"_type":"link","url":"/","action":"get"}}}"""
+        call_command('generateschema',
+                     '--format=corejson',
+                     stdout=self.out)
+        self.assertIn(expected_out, self.out.getvalue())
diff --git a/tests/schemas/test_openapi.py b/tests/schemas/test_openapi.py
new file mode 100644
index 000000000..2ddf54f01
--- /dev/null
+++ b/tests/schemas/test_openapi.py
@@ -0,0 +1,245 @@
+import pytest
+from django.conf.urls import url
+from django.test import RequestFactory, TestCase, override_settings
+
+from rest_framework import filters, generics, pagination, routers, serializers
+from rest_framework.compat import uritemplate
+from rest_framework.request import Request
+from rest_framework.schemas.openapi import AutoSchema, SchemaGenerator
+
+from . import views
+
+
+def create_request(path):
+    factory = RequestFactory()
+    request = Request(factory.get(path))
+    return request
+
+
+def create_view(view_cls, method, request):
+    generator = SchemaGenerator()
+    view = generator.create_view(view_cls.as_view(), method, request)
+    return view
+
+
+class TestBasics(TestCase):
+    def dummy_view(request):
+        pass
+
+    def test_filters(self):
+        classes = [filters.SearchFilter, filters.OrderingFilter]
+        for c in classes:
+            f = c()
+            assert f.get_schema_operation_parameters(self.dummy_view)
+
+    def test_pagination(self):
+        classes = [pagination.PageNumberPagination, pagination.LimitOffsetPagination, pagination.CursorPagination]
+        for c in classes:
+            f = c()
+            assert f.get_schema_operation_parameters(self.dummy_view)
+
+
+@pytest.mark.skipif(uritemplate is None, reason='uritemplate not installed.')
+class TestOperationIntrospection(TestCase):
+
+    def test_path_without_parameters(self):
+        path = '/example/'
+        method = 'GET'
+
+        view = create_view(
+            views.ExampleListView,
+            method,
+            create_request(path)
+        )
+        inspector = AutoSchema()
+        inspector.view = view
+
+        operation = inspector.get_operation(path, method)
+        assert operation == {
+            'operationId': 'ListExamples',
+            'parameters': [],
+            'responses': {'200': {'content': {'application/json': {'schema': {}}}}},
+        }
+
+    def test_path_with_id_parameter(self):
+        path = '/example/{id}/'
+        method = 'GET'
+
+        view = create_view(
+            views.ExampleDetailView,
+            method,
+            create_request(path)
+        )
+        inspector = AutoSchema()
+        inspector.view = view
+
+        parameters = inspector._get_path_parameters(path, method)
+        assert parameters == [{
+            'description': '',
+            'in': 'path',
+            'name': 'id',
+            'required': True,
+            'schema': {
+                'type': 'string',
+            },
+        }]
+
+    def test_request_body(self):
+        path = '/'
+        method = 'POST'
+
+        class Serializer(serializers.Serializer):
+            text = serializers.CharField()
+            read_only = serializers.CharField(read_only=True)
+
+        class View(generics.GenericAPIView):
+            serializer_class = Serializer
+
+        view = create_view(
+            View,
+            method,
+            create_request(path)
+        )
+        inspector = AutoSchema()
+        inspector.view = view
+
+        request_body = inspector._get_request_body(path, method)
+        assert request_body['content']['application/json']['schema']['required'] == ['text']
+        assert list(request_body['content']['application/json']['schema']['properties'].keys()) == ['text']
+
+    def test_response_body_generation(self):
+        path = '/'
+        method = 'POST'
+
+        class Serializer(serializers.Serializer):
+            text = serializers.CharField()
+            write_only = serializers.CharField(write_only=True)
+
+        class View(generics.GenericAPIView):
+            serializer_class = Serializer
+
+        view = create_view(
+            View,
+            method,
+            create_request(path)
+        )
+        inspector = AutoSchema()
+        inspector.view = view
+
+        responses = inspector._get_responses(path, method)
+        assert responses['200']['content']['application/json']['schema']['required'] == ['text']
+        assert list(responses['200']['content']['application/json']['schema']['properties'].keys()) == ['text']
+
+    def test_response_body_nested_serializer(self):
+        path = '/'
+        method = 'POST'
+
+        class NestedSerializer(serializers.Serializer):
+            number = serializers.IntegerField()
+
+        class Serializer(serializers.Serializer):
+            text = serializers.CharField()
+            nested = NestedSerializer()
+
+        class View(generics.GenericAPIView):
+            serializer_class = Serializer
+
+        view = create_view(
+            View,
+            method,
+            create_request(path),
+        )
+        inspector = AutoSchema()
+        inspector.view = view
+
+        responses = inspector._get_responses(path, method)
+        schema = responses['200']['content']['application/json']['schema']
+        assert sorted(schema['required']) == ['nested', 'text']
+        assert sorted(list(schema['properties'].keys())) == ['nested', 'text']
+        assert schema['properties']['nested']['type'] == 'object'
+        assert list(schema['properties']['nested']['properties'].keys()) == ['number']
+        assert schema['properties']['nested']['required'] == ['number']
+
+    def test_operation_id_generation(self):
+        path = '/'
+        method = 'GET'
+
+        view = create_view(
+            views.ExampleGenericAPIView,
+            method,
+            create_request(path),
+        )
+        inspector = AutoSchema()
+        inspector.view = view
+
+        operationId = inspector._get_operation_id(path, method)
+        assert operationId == 'ListExamples'
+
+    def test_repeat_operation_ids(self):
+        router = routers.SimpleRouter()
+        router.register('account', views.ExampleGenericViewSet, basename="account")
+        urlpatterns = router.urls
+
+        generator = SchemaGenerator(patterns=urlpatterns)
+
+        request = create_request('/')
+        schema = generator.get_schema(request=request)
+        schema_str = str(schema)
+        print(schema_str)
+        assert schema_str.count("operationId") == 2
+        assert schema_str.count("newExample") == 1
+        assert schema_str.count("oldExample") == 1
+
+
+@pytest.mark.skipif(uritemplate is None, reason='uritemplate not installed.')
+@override_settings(REST_FRAMEWORK={'DEFAULT_SCHEMA_CLASS': 'rest_framework.schemas.openapi.AutoSchema'})
+class TestGenerator(TestCase):
+
+    def test_override_settings(self):
+        assert isinstance(views.ExampleListView.schema, AutoSchema)
+
+    def test_paths_construction(self):
+        """Construction of the `paths` key."""
+        patterns = [
+            url(r'^example/?$', views.ExampleListView.as_view()),
+        ]
+        generator = SchemaGenerator(patterns=patterns)
+        generator._initialise_endpoints()
+
+        paths = generator.get_paths()
+
+        assert '/example/' in paths
+        example_operations = paths['/example/']
+        assert len(example_operations) == 2
+        assert 'get' in example_operations
+        assert 'post' in example_operations
+
+    def test_schema_construction(self):
+        """Construction of the top level dictionary."""
+        patterns = [
+            url(r'^example/?$', views.ExampleListView.as_view()),
+        ]
+        generator = SchemaGenerator(patterns=patterns)
+
+        request = create_request('/')
+        schema = generator.get_schema(request=request)
+
+        assert 'openapi' in schema
+        assert 'paths' in schema
+
+    def test_serializer_datefield(self):
+        patterns = [
+            url(r'^example/?$', views.ExampleGenericViewSet.as_view({"get": "get"})),
+        ]
+        generator = SchemaGenerator(patterns=patterns)
+
+        request = create_request('/')
+        schema = generator.get_schema(request=request)
+
+        response = schema['paths']['/example/']['get']['responses']
+        response_schema = response['200']['content']['application/json']['schema']['properties']
+
+        assert response_schema['date']['type'] == response_schema['datetime']['type'] == 'string'
+
+        assert response_schema['date']['format'] == 'date'
+        assert response_schema['datetime']['format'] == 'date-time'
diff --git a/tests/schemas/views.py b/tests/schemas/views.py
new file mode 100644
index 000000000..dc0d6065b
--- /dev/null
+++ b/tests/schemas/views.py
@@ -0,0 +1,58 @@
+from rest_framework import generics, permissions, serializers
+from rest_framework.decorators import action
+from rest_framework.response import Response
+from rest_framework.views import APIView
+from rest_framework.viewsets import GenericViewSet
+
+
+class ExampleListView(APIView):
+    permission_classes = [permissions.IsAuthenticatedOrReadOnly]
+
+    def get(self, *args, **kwargs):
+        pass
+
+    def post(self, request, *args, **kwargs):
+        pass
+
+
+class ExampleDetailView(APIView):
+    permission_classes = [permissions.IsAuthenticatedOrReadOnly]
+
+    def get(self, *args, **kwargs):
+        pass
+
+
+# Generics.
+class ExampleSerializer(serializers.Serializer):
+    date = serializers.DateField()
+    datetime = serializers.DateTimeField()
+
+
+class ExampleGenericAPIView(generics.GenericAPIView):
+    serializer_class = ExampleSerializer
+
+    def get(self, *args, **kwargs):
+        from datetime import datetime
+        now = datetime.now()
+
+        serializer = self.get_serializer(data=now.date(), datetime=now)
+        return Response(serializer.data)
+
+
+class ExampleGenericViewSet(GenericViewSet):
+    serializer_class = ExampleSerializer
+
+    def get(self, *args, **kwargs):
+        from datetime import datetime
+        now = datetime.now()
+
+        serializer = self.get_serializer(data=now.date(), datetime=now)
+        return Response(serializer.data)
+
+    @action(detail=False)
+    def new(self, *args, **kwargs):
+        pass
+
+    @action(detail=False)
+    def old(self, *args, **kwargs):
+        pass
diff --git a/tests/test_api_client.py b/tests/test_api_client.py
index e4354ec60..74a3579e2 100644
--- a/tests/test_api_client.py
+++ b/tests/test_api_client.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import os
 import tempfile
 import unittest
diff --git a/tests/test_atomic_requests.py b/tests/test_atomic_requests.py
index bddd480a5..de04d2c06 100644
--- a/tests/test_atomic_requests.py
+++ b/tests/test_atomic_requests.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import unittest
 
 from django.conf.urls import url
@@ -38,7 +36,7 @@ class APIExceptionView(APIView):
 class NonAtomicAPIExceptionView(APIView):
     @transaction.non_atomic_requests
     def dispatch(self, *args, **kwargs):
-        return super(NonAtomicAPIExceptionView, self).dispatch(*args, **kwargs)
+        return super().dispatch(*args, **kwargs)
 
     def get(self, request, *args, **kwargs):
         BasicModel.objects.all()
diff --git a/tests/test_authtoken.py b/tests/test_authtoken.py
index c8957f978..036e317ef 100644
--- a/tests/test_authtoken.py
+++ b/tests/test_authtoken.py
@@ -1,9 +1,10 @@
+from io import StringIO
+
 import pytest
 from django.contrib.admin import site
 from django.contrib.auth.models import User
 from django.core.management import CommandError, call_command
 from django.test import TestCase
-from django.utils.six import StringIO
 
 from rest_framework.authtoken.admin import TokenAdmin
 from rest_framework.authtoken.management.commands.drf_create_token import \
diff --git a/tests/test_bound_fields.py b/tests/test_bound_fields.py
index e588ae623..dc5ab542f 100644
--- a/tests/test_bound_fields.py
+++ b/tests/test_bound_fields.py
@@ -28,7 +28,7 @@ class TestSimpleBoundField:
         assert serializer['text'].value == 'abc'
         assert serializer['text'].errors is None
         assert serializer['text'].name == 'text'
-        assert serializer['amount'].value is 123
+        assert serializer['amount'].value == 123
         assert serializer['amount'].errors is None
         assert serializer['amount'].name == 'amount'
 
@@ -43,7 +43,7 @@ class TestSimpleBoundField:
         assert serializer['text'].value == 'x' * 1000
         assert serializer['text'].errors == ['Ensure this field has no more than 100 characters.']
         assert serializer['text'].name == 'text'
-        assert serializer['amount'].value is 123
+        assert serializer['amount'].value == 123
         assert serializer['amount'].errors is None
         assert serializer['amount'].name == 'amount'
 
diff --git a/tests/test_decorators.py b/tests/test_decorators.py
index 7568513f3..bd30449e5 100644
--- a/tests/test_decorators.py
+++ b/tests/test_decorators.py
@@ -1,9 +1,7 @@
-from __future__ import unicode_literals
-
 import pytest
 from django.test import TestCase
 
-from rest_framework import status
+from rest_framework import RemovedInDRF310Warning, status
 from rest_framework.authentication import BasicAuthentication
 from rest_framework.decorators import (
     action, api_view, authentication_classes, detail_route, list_route,
@@ -179,7 +177,6 @@ class ActionDecoratorTestCase(TestCase):
 
         assert test_action.mapping == {'get': 'test_action'}
         assert test_action.detail is True
-        assert test_action.name == 'Test action'
         assert test_action.url_path == 'test_action'
         assert test_action.url_name == 'test-action'
         assert test_action.kwargs == {
@@ -205,14 +202,54 @@ class ActionDecoratorTestCase(TestCase):
             def method():
                 raise NotImplementedError
 
-            # Python 2.x compatibility - cast __name__ to str
-            method.__name__ = str(name)
+            method.__name__ = name
             getattr(test_action.mapping, name)(method)
 
         # ensure the mapping returns the correct method name
         for name in APIView.http_method_names:
             assert test_action.mapping[name] == name
 
+    def test_view_name_kwargs(self):
+        """
+        'name' and 'suffix' are mutually exclusive kwargs used for generating
+        a view's display name.
+        """
+        # by default, generate name from method
+        @action(detail=True)
+        def test_action(request):
+            raise NotImplementedError
+
+        assert test_action.kwargs == {
+            'description': None,
+            'name': 'Test action',
+        }
+
+        # name kwarg supersedes name generation
+        @action(detail=True, name='test name')
+        def test_action(request):
+            raise NotImplementedError
+
+        assert test_action.kwargs == {
+            'description': None,
+            'name': 'test name',
+        }
+
+        # suffix kwarg supersedes name generation
+        @action(detail=True, suffix='Suffix')
+        def test_action(request):
+            raise NotImplementedError
+
+        assert test_action.kwargs == {
+            'description': None,
+            'suffix': 'Suffix',
+        }
+
+        # name + suffix is a conflict.
+        with pytest.raises(TypeError) as excinfo:
+            action(detail=True, name='test name', suffix='Suffix')
+
+        assert str(excinfo.value) == "`name` and `suffix` are mutually exclusive arguments."
+
     def test_method_mapping(self):
         @action(detail=False)
         def test_action(request):
@@ -223,7 +260,7 @@ class ActionDecoratorTestCase(TestCase):
             raise NotImplementedError
 
         # The secondary handler methods should not have the action attributes
-        for name in ['mapping', 'detail', 'name', 'url_path', 'url_name', 'kwargs']:
+        for name in ['mapping', 'detail', 'url_path', 'url_name', 'kwargs']:
             assert hasattr(test_action, name) and not hasattr(test_action_post, name)
 
     def test_method_mapping_already_mapped(self):
@@ -250,34 +287,34 @@ class ActionDecoratorTestCase(TestCase):
                 raise NotImplementedError
 
     def test_detail_route_deprecation(self):
-        with pytest.warns(PendingDeprecationWarning) as record:
+        with pytest.warns(RemovedInDRF310Warning) as record:
             @detail_route()
             def view(request):
                 raise NotImplementedError
 
         assert len(record) == 1
         assert str(record[0].message) == (
-            "`detail_route` is pending deprecation and will be removed in "
+            "`detail_route` is deprecated and will be removed in "
             "3.10 in favor of `action`, which accepts a `detail` bool. Use "
             "`@action(detail=True)` instead."
         )
 
     def test_list_route_deprecation(self):
-        with pytest.warns(PendingDeprecationWarning) as record:
+        with pytest.warns(RemovedInDRF310Warning) as record:
             @list_route()
             def view(request):
                 raise NotImplementedError
 
         assert len(record) == 1
         assert str(record[0].message) == (
-            "`list_route` is pending deprecation and will be removed in "
+            "`list_route` is deprecated and will be removed in "
             "3.10 in favor of `action`, which accepts a `detail` bool. Use "
             "`@action(detail=False)` instead."
         )
 
     def test_route_url_name_from_path(self):
         # pre-3.8 behavior was to base the `url_name` off of the `url_path`
-        with pytest.warns(PendingDeprecationWarning):
+        with pytest.warns(RemovedInDRF310Warning):
             @list_route(url_path='foo_bar')
             def view(request):
                 raise NotImplementedError
diff --git a/tests/test_description.py b/tests/test_description.py
index 702e56332..ae00fe4a9 100644
--- a/tests/test_description.py
+++ b/tests/test_description.py
@@ -1,9 +1,4 @@
-# -- coding: utf-8 --
-
-from __future__ import unicode_literals
-
 from django.test import TestCase
-from django.utils.encoding import python_2_unicode_compatible
 
 from rest_framework.compat import apply_markdown
 from rest_framework.utils.formatting import dedent
@@ -157,8 +152,8 @@ class TestViewNamesAndDescriptions(TestCase):
         """
         # use a mock object instead of gettext_lazy to ensure that we can't end
         # up with a test case string in our l10n catalog
-        @python_2_unicode_compatible
-        class MockLazyStr(object):
+
+        class MockLazyStr:
             def __init__(self, string):
                 self.s = string
 
diff --git a/tests/test_encoders.py b/tests/test_encoders.py
index 12eca8105..c66954b80 100644
--- a/tests/test_encoders.py
+++ b/tests/test_encoders.py
@@ -10,7 +10,7 @@ from rest_framework.compat import coreapi
 from rest_framework.utils.encoders import JSONEncoder
 
 
-class MockList(object):
+class MockList:
     def tolist(self):
         return [1, 2, 3]
 
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
index ce0ed8514..9516bfec9 100644
--- a/tests/test_exceptions.py
+++ b/tests/test_exceptions.py
@@ -1,9 +1,6 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
 from django.test import RequestFactory, TestCase
-from django.utils import six, translation
-from django.utils.translation import ugettext_lazy as _
+from django.utils import translation
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework.exceptions import (
     APIException, ErrorDetail, Throttled, _get_error_details, bad_request,
@@ -46,12 +43,12 @@ class ExceptionTestCase(TestCase):
 
         exception = Throttled(wait=2)
         assert exception.get_full_details() == {
-            'message': 'Request was throttled. Expected available in {} seconds.'.format(2 if six.PY3 else 2.),
+            'message': 'Request was throttled. Expected available in {} seconds.'.format(2),
             'code': 'throttled'}
 
         exception = Throttled(wait=2, detail='Slow down!')
         assert exception.get_full_details() == {
-            'message': 'Slow down! Expected available in {} seconds.'.format(2 if six.PY3 else 2.),
+            'message': 'Slow down! Expected available in {} seconds.'.format(2),
             'code': 'throttled'}
 
 
@@ -92,7 +89,7 @@ class TranslationTests(TestCase):
     def test_message(self):
         # this test largely acts as a sanity test to ensure the translation files are present.
         self.assertEqual(_('A server error occurred.'), 'Une erreur du serveur est survenue.')
-        self.assertEqual(six.text_type(APIException()), 'Une erreur du serveur est survenue.')
+        self.assertEqual(str(APIException()), 'Une erreur du serveur est survenue.')
 
 
 def test_server_error():
diff --git a/tests/test_fields.py b/tests/test_fields.py
index aa3391a72..e7f16c178 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -1,7 +1,6 @@
 import datetime
 import os
 import re
-import unittest
 import uuid
 from decimal import ROUND_DOWN, ROUND_UP, Decimal
 
@@ -10,22 +9,17 @@ import pytz
 from django.core.exceptions import ValidationError as DjangoValidationError
 from django.http import QueryDict
 from django.test import TestCase, override_settings
-from django.utils import six
 from django.utils.timezone import activate, deactivate, override, utc
 
 import rest_framework
 from rest_framework import exceptions, serializers
+from rest_framework.compat import ProhibitNullCharactersValidator
 from rest_framework.fields import DjangoImageField, is_simple_callable
 
-try:
-    import typings
-except ImportError:
-    typings = False
-
-
 # Tests for helper functions.
 # ---------------------------
 
+
 class TestIsSimpleCallable:
 
     def test_method(self):
@@ -92,11 +86,11 @@ class TestIsSimpleCallable:
 
         assert is_simple_callable(ChoiceModel().get_choice_field_display)
 
-    @unittest.skipUnless(typings, 'requires python 3.5')
     def test_type_annotation(self):
         # The annotation will otherwise raise a syntax error in python < 3.5
-        exec("def valid(param: str='value'):  pass", locals())
-        valid = locals()['valid']
+        locals = {}
+        exec("def valid(param: str='value'):  pass", locals)
+        valid = locals['valid']
 
         assert is_simple_callable(valid)
 
@@ -165,7 +159,7 @@ class TestEmpty:
         """
         field = serializers.IntegerField(default=123)
         output = field.run_validation()
-        assert output is 123
+        assert output == 123
 
 
 class TestSource:
@@ -191,7 +185,7 @@ class TestSource:
         class ExampleSerializer(serializers.Serializer):
             example_field = serializers.CharField(source='example_callable')
 
-        class ExampleInstance(object):
+        class ExampleInstance:
             def example_callable(self):
                 return 'example callable value'
 
@@ -202,7 +196,7 @@ class TestSource:
         class ExampleSerializer(serializers.Serializer):
             example_field = serializers.CharField(source='example_callable', read_only=True)
 
-        class ExampleInstance(object):
+        class ExampleInstance:
             def example_callable(self):
                 raise AttributeError('method call failed')
 
@@ -657,7 +651,7 @@ class TestBooleanField(FieldValues):
 
 class TestNullBooleanField(TestBooleanField):
     """
-    Valid and invalid values for `BooleanField`.
+    Valid and invalid values for `NullBooleanField`.
     """
     valid_inputs = {
         'true': True,
@@ -682,6 +676,16 @@ class TestNullBooleanField(TestBooleanField):
     field = serializers.NullBooleanField()
 
 
+class TestNullableBooleanField(TestNullBooleanField):
+    """
+    Valid and invalid values for `BooleanField` when `allow_null=True`.
+    """
+
+    @property
+    def field(self):
+        return serializers.BooleanField(allow_null=True)
+
+
 # String types...
 
 class TestCharField(FieldValues):
@@ -718,6 +722,36 @@ class TestCharField(FieldValues):
             field.run_validation('   ')
         assert exc_info.value.detail == ['This field may not be blank.']
 
+    @pytest.mark.skipif(ProhibitNullCharactersValidator is None, reason="Skipped on Django < 2.0")
+    def test_null_bytes(self):
+        field = serializers.CharField()
+
+        for value in ('\0', 'foo\0', '\0foo', 'foo\0foo'):
+            with pytest.raises(serializers.ValidationError) as exc_info:
+                field.run_validation(value)
+            assert exc_info.value.detail == [
+                'Null characters are not allowed.'
+            ]
+
+    def test_iterable_validators(self):
+        """
+        Ensure `validators` parameter is compatible with reasonable iterables.
+        """
+        value = 'example'
+
+        for validators in ([], (), set()):
+            field = serializers.CharField(validators=validators)
+            field.run_validation(value)
+
+        def raise_exception(value):
+            raise exceptions.ValidationError('Raised error')
+
+        for validators in ([raise_exception], (raise_exception,), {raise_exception}):
+            field = serializers.CharField(validators=validators)
+            with pytest.raises(serializers.ValidationError) as exc_info:
+                field.run_validation(value)
+            assert exc_info.value.detail == ['Raised error']
+
 
 class TestEmailField(FieldValues):
     """
@@ -780,7 +814,7 @@ class TestSlugField(FieldValues):
 
         validation_error = False
         try:
-            field.run_validation(u'slug-99-\u0420')
+            field.run_validation('slug-99-\u0420')
         except serializers.ValidationError:
             validation_error = True
 
@@ -1106,7 +1140,7 @@ class TestLocalizedDecimalField(TestCase):
 
     def test_localize_forces_coerce_to_string(self):
         field = serializers.DecimalField(max_digits=2, decimal_places=1, coerce_to_string=False, localize=True)
-        assert isinstance(field.to_representation(Decimal('1.1')), six.string_types)
+        assert isinstance(field.to_representation(Decimal('1.1')), str)
 
 
 class TestQuantizedValueForDecimal(TestCase):
@@ -1177,7 +1211,7 @@ class TestDateField(FieldValues):
     outputs = {
         datetime.date(2001, 1, 1): '2001-01-01',
         '2001-01-01': '2001-01-01',
-        six.text_type('2016-01-10'): '2016-01-10',
+        str('2016-01-10'): '2016-01-10',
         None: None,
         '': None,
     }
@@ -1244,7 +1278,7 @@ class TestDateTimeField(FieldValues):
         datetime.datetime(2001, 1, 1, 13, 00): '2001-01-01T13:00:00Z',
         datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): '2001-01-01T13:00:00Z',
         '2001-01-01T00:00:00': '2001-01-01T00:00:00',
-        six.text_type('2016-01-10T00:00:00'): '2016-01-10T00:00:00',
+        str('2016-01-10T00:00:00'): '2016-01-10T00:00:00',
         None: None,
         '': None,
     }
@@ -1586,7 +1620,7 @@ class TestChoiceField(FieldValues):
             ]
         )
         field.choices = [1]
-        assert field.run_validation(1) is 1
+        assert field.run_validation(1) == 1
         with pytest.raises(serializers.ValidationError) as exc_info:
             field.run_validation(2)
         assert exc_info.value.detail == ['"2" is not a valid choice.']
@@ -1948,6 +1982,7 @@ class TestDictField(FieldValues):
     """
     valid_inputs = [
         ({'a': 1, 'b': '2', 3: 3}, {'a': '1', 'b': '2', '3': '3'}),
+        ({}, {}),
     ]
     invalid_inputs = [
         ({'a': 1, 'b': None, 'c': None}, {'b': ['This field may not be null.'], 'c': ['This field may not be null.']}),
@@ -1975,6 +2010,16 @@ class TestDictField(FieldValues):
         output = field.run_validation(None)
         assert output is None
 
+    def test_allow_empty_disallowed(self):
+        """
+        If allow_empty is False then an empty dict is not a valid input.
+        """
+        field = serializers.DictField(allow_empty=False)
+        with pytest.raises(serializers.ValidationError) as exc_info:
+            field.run_validation({})
+
+        assert exc_info.value.detail == ['This dictionary may not be empty.']
+
 
 class TestNestedDictField(FieldValues):
     """
diff --git a/tests/test_filters.py b/tests/test_filters.py
index a7d9a07c1..a52f40103 100644
--- a/tests/test_filters.py
+++ b/tests/test_filters.py
@@ -1,13 +1,12 @@
-from __future__ import unicode_literals
-
 import datetime
+from importlib import reload as reload_module
 
 import pytest
 from django.core.exceptions import ImproperlyConfigured
 from django.db import models
+from django.db.models.functions import Concat, Upper
 from django.test import TestCase
 from django.test.utils import override_settings
-from django.utils.six.moves import reload_module
 
 from rest_framework import filters, generics, serializers
 from rest_framework.compat import coreschema
@@ -156,6 +155,31 @@ class SearchFilterTests(TestCase):
 
         reload_module(filters)
 
+    def test_search_with_filter_subclass(self):
+        class CustomSearchFilter(filters.SearchFilter):
+            # Filter that dynamically changes search fields
+            def get_search_fields(self, view, request):
+                if request.query_params.get('title_only'):
+                    return ('$title',)
+                return super().get_search_fields(view, request)
+
+        class SearchListView(generics.ListAPIView):
+            queryset = SearchFilterModel.objects.all()
+            serializer_class = SearchFilterSerializer
+            filter_backends = (CustomSearchFilter,)
+            search_fields = ('$title', '$text')
+
+        view = SearchListView.as_view()
+        request = factory.get('/', {'search': r'^\w{3}$'})
+        response = view(request)
+        assert len(response.data) == 10
+
+        request = factory.get('/', {'search': r'^\w{3}$', 'title_only': 'true'})
+        response = view(request)
+        assert response.data == [
+            {'id': 3, 'title': 'zzz', 'text': 'cde'}
+        ]
+
 
 class AttributeModel(models.Model):
     label = models.CharField(max_length=32)
@@ -221,7 +245,7 @@ class SearchFilterM2MTests(TestCase):
         # ...
         for idx in range(3):
             label = 'w' * (idx + 1)
-            AttributeModel(label=label)
+            AttributeModel.objects.create(label=label)
 
         for idx in range(10):
             title = 'z' * (idx + 1)
@@ -304,6 +328,38 @@ class SearchFilterToManyTests(TestCase):
         assert len(response.data) == 1
 
 
+class SearchFilterAnnotatedSerializer(serializers.ModelSerializer):
+    title_text = serializers.CharField()
+
+    class Meta:
+        model = SearchFilterModel
+        fields = ('title', 'text', 'title_text')
+
+
+class SearchFilterAnnotatedFieldTests(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        SearchFilterModel.objects.create(title='abc', text='def')
+        SearchFilterModel.objects.create(title='ghi', text='jkl')
+
+    def test_search_in_annotated_field(self):
+        class SearchListView(generics.ListAPIView):
+            queryset = SearchFilterModel.objects.annotate(
+                title_text=Upper(
+                    Concat(models.F('title'), models.F('text'))
+                )
+            ).all()
+            serializer_class = SearchFilterAnnotatedSerializer
+            filter_backends = (filters.SearchFilter,)
+            search_fields = ('title_text',)
+
+        view = SearchListView.as_view()
+        request = factory.get('/', {'search': 'ABCDEF'})
+        response = view(request)
+        assert len(response.data) == 1
+        assert response.data[0]['title_text'] == 'ABCDEF'
+
+
 class OrderingFilterModel(models.Model):
     title = models.CharField(max_length=20, verbose_name='verbose title')
     text = models.CharField(max_length=100)
diff --git a/tests/test_generics.py b/tests/test_generics.py
index c0ff1c5c4..0b91e3465 100644
--- a/tests/test_generics.py
+++ b/tests/test_generics.py
@@ -1,11 +1,8 @@
-from __future__ import unicode_literals
-
 import pytest
 from django.db import models
 from django.http import Http404
 from django.shortcuts import get_object_or_404
 from django.test import TestCase
-from django.utils import six
 
 from rest_framework import generics, renderers, serializers, status
 from rest_framework.response import Response
@@ -167,7 +164,7 @@ class TestRootView(TestCase):
         request = factory.post('/', data, HTTP_ACCEPT='text/html')
         response = self.view(request).render()
         expected_error = '<span class="help-block">Ensure this field has no more than 100 characters.</span>'
-        assert expected_error in response.rendered_content.decode('utf-8')
+        assert expected_error in response.rendered_content.decode()
 
 
 EXPECTED_QUERIES_FOR_PUT = 2
@@ -245,7 +242,7 @@ class TestInstanceView(TestCase):
         with self.assertNumQueries(2):
             response = self.view(request, pk=1).render()
         assert response.status_code == status.HTTP_204_NO_CONTENT
-        assert response.content == six.b('')
+        assert response.content == b''
         ids = [obj.id for obj in self.objects.all()]
         assert ids == [2, 3]
 
@@ -291,7 +288,7 @@ class TestInstanceView(TestCase):
         """
         data = {'text': 'foo'}
         filtered_out_pk = BasicModel.objects.filter(text='filtered out')[0].pk
-        request = factory.put('/{0}'.format(filtered_out_pk), data, format='json')
+        request = factory.put('/{}'.format(filtered_out_pk), data, format='json')
         response = self.view(request, pk=filtered_out_pk).render()
         assert response.status_code == status.HTTP_404_NOT_FOUND
 
@@ -314,7 +311,7 @@ class TestInstanceView(TestCase):
         request = factory.put('/', data, HTTP_ACCEPT='text/html')
         response = self.view(request, pk=1).render()
         expected_error = '<span class="help-block">Ensure this field has no more than 100 characters.</span>'
-        assert expected_error in response.rendered_content.decode('utf-8')
+        assert expected_error in response.rendered_content.decode()
 
 
 class TestFKInstanceView(TestCase):
@@ -446,12 +443,12 @@ class TestM2MBrowsableAPI(TestCase):
         assert response.status_code == status.HTTP_200_OK
 
 
-class InclusiveFilterBackend(object):
+class InclusiveFilterBackend:
     def filter_queryset(self, request, queryset, view):
         return queryset.filter(text='foo')
 
 
-class ExclusiveFilterBackend(object):
+class ExclusiveFilterBackend:
     def filter_queryset(self, request, queryset, view):
         return queryset.filter(text='other')
 
@@ -541,7 +538,7 @@ class TestFilterBackendAppliedToViews(TestCase):
         view = DynamicSerializerView.as_view()
         request = factory.get('/')
         response = view(request).render()
-        content = response.content.decode('utf8')
+        content = response.content.decode()
         assert 'field_b' in content
         assert 'field_a' not in content
 
@@ -653,7 +650,7 @@ class ApiViewsTests(TestCase):
 
 class GetObjectOr404Tests(TestCase):
     def setUp(self):
-        super(GetObjectOr404Tests, self).setUp()
+        super().setUp()
         self.uuid_object = UUIDForeignKeyTarget.objects.create(name='bar')
 
     def test_get_object_or_404_with_valid_uuid(self):
diff --git a/tests/test_htmlrenderer.py b/tests/test_htmlrenderer.py
index decd25a3f..e31a9ced5 100644
--- a/tests/test_htmlrenderer.py
+++ b/tests/test_htmlrenderer.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import django.template.loader
 import pytest
 from django.conf.urls import url
@@ -7,7 +5,6 @@ from django.core.exceptions import ImproperlyConfigured, PermissionDenied
 from django.http import Http404
 from django.template import TemplateDoesNotExist, engines
 from django.test import TestCase, override_settings
-from django.utils import six
 
 from rest_framework import status
 from rest_framework.decorators import api_view, renderer_classes
@@ -47,7 +44,7 @@ urlpatterns = [
 @override_settings(ROOT_URLCONF='tests.test_htmlrenderer')
 class TemplateHTMLRendererTests(TestCase):
     def setUp(self):
-        class MockResponse(object):
+        class MockResponse:
             template_name = None
         self.mock_response = MockResponse()
         self._monkey_patch_get_template()
@@ -85,13 +82,13 @@ class TemplateHTMLRendererTests(TestCase):
     def test_not_found_html_view(self):
         response = self.client.get('/not_found')
         self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
-        self.assertEqual(response.content, six.b("404 Not Found"))
+        self.assertEqual(response.content, b"404 Not Found")
         self.assertEqual(response['Content-Type'], 'text/html; charset=utf-8')
 
     def test_permission_denied_html_view(self):
         response = self.client.get('/permission_denied')
         self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-        self.assertEqual(response.content, six.b("403 Forbidden"))
+        self.assertEqual(response.content, b"403 Forbidden")
         self.assertEqual(response['Content-Type'], 'text/html; charset=utf-8')
 
     # 2 tests below are based on order of if statements in corresponding method
@@ -105,14 +102,14 @@ class TemplateHTMLRendererTests(TestCase):
     def test_get_template_names_returns_view_template_name(self):
         renderer = TemplateHTMLRenderer()
 
-        class MockResponse(object):
+        class MockResponse:
             template_name = None
 
-        class MockView(object):
+        class MockView:
             def get_template_names(self):
                 return ['template from get_template_names method']
 
-        class MockView2(object):
+        class MockView2:
             template_name = 'template from template_name attribute'
 
         template_name = renderer.get_template_names(self.mock_response,
@@ -156,12 +153,11 @@ class TemplateHTMLRendererExceptionTests(TestCase):
         response = self.client.get('/not_found')
         self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
         self.assertTrue(response.content in (
-            six.b("404: Not found"), six.b("404 Not Found")))
+            b"404: Not found", b"404 Not Found"))
         self.assertEqual(response['Content-Type'], 'text/html; charset=utf-8')
 
     def test_permission_denied_html_view_with_template(self):
         response = self.client.get('/permission_denied')
         self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-        self.assertTrue(response.content in (
-            six.b("403: Permission denied"), six.b("403 Forbidden")))
+        self.assertTrue(response.content in (b"403: Permission denied", b"403 Forbidden"))
         self.assertEqual(response['Content-Type'], 'text/html; charset=utf-8')
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
index fe4ea4b42..e1a1fd352 100644
--- a/tests/test_metadata.py
+++ b/tests/test_metadata.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import pytest
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.db import models
diff --git a/tests/test_middleware.py b/tests/test_middleware.py
index 9df7d8e3e..28a5e558a 100644
--- a/tests/test_middleware.py
+++ b/tests/test_middleware.py
@@ -22,7 +22,7 @@ urlpatterns = [
 ]
 
 
-class RequestUserMiddleware(object):
+class RequestUserMiddleware:
     def __init__(self, get_response):
         self.get_response = get_response
 
@@ -34,7 +34,7 @@ class RequestUserMiddleware(object):
         return response
 
 
-class RequestPOSTMiddleware(object):
+class RequestPOSTMiddleware:
     def __init__(self, get_response):
         self.get_response = get_response
 
diff --git a/tests/test_model_serializer.py b/tests/test_model_serializer.py
index 7e801badb..413d7885d 100644
--- a/tests/test_model_serializer.py
+++ b/tests/test_model_serializer.py
@@ -5,12 +5,12 @@ shortcuts for automatically creating serializers based on a given model class.
 These tests deal with ensuring that we correctly map the model fields onto
 an appropriate set of serializer fields for each case.
 """
-from __future__ import unicode_literals
-
 import datetime
 import decimal
+import sys
 from collections import OrderedDict
 
+import django
 import pytest
 from django.core.exceptions import ImproperlyConfigured
 from django.core.validators import (
@@ -18,10 +18,9 @@ from django.core.validators import (
 )
 from django.db import models
 from django.test import TestCase
-from django.utils import six
 
 from rest_framework import serializers
-from rest_framework.compat import postgres_fields, unicode_repr
+from rest_framework.compat import postgres_fields
 
 from .models import NestedForeignKeySource
 
@@ -181,7 +180,7 @@ class TestRegularFieldMappings(TestCase):
                 null_boolean_field = NullBooleanField(required=False)
                 positive_integer_field = IntegerField()
                 positive_small_integer_field = IntegerField()
-                slug_field = SlugField(max_length=100)
+                slug_field = SlugField(allow_unicode=False, max_length=100)
                 small_integer_field = IntegerField()
                 text_field = CharField(max_length=100, style={'base_template': 'textarea.html'})
                 file_field = FileField(max_length=100)
@@ -191,7 +190,7 @@ class TestRegularFieldMappings(TestCase):
                 file_path_field = FilePathField(path='/tmp/')
         """)
 
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_field_options(self):
         class TestSerializer(serializers.ModelSerializer):
@@ -210,14 +209,26 @@ class TestRegularFieldMappings(TestCase):
                 descriptive_field = IntegerField(help_text='Some help text', label='A label')
                 choices_field = ChoiceField(choices=(('red', 'Red'), ('blue', 'Blue'), ('green', 'Green')))
         """)
-        if six.PY2:
-            # This particular case is too awkward to resolve fully across
-            # both py2 and py3.
-            expected = expected.replace(
-                "('red', 'Red'), ('blue', 'Blue'), ('green', 'Green')",
-                "(u'red', u'Red'), (u'blue', u'Blue'), (u'green', u'Green')"
-            )
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
+
+    # merge this into test_regular_fields / RegularFieldsModel when
+    # Django 2.1 is the minimum supported version
+    @pytest.mark.skipif(django.VERSION < (2, 1), reason='Django version < 2.1')
+    def test_nullable_boolean_field(self):
+        class NullableBooleanModel(models.Model):
+            field = models.BooleanField(null=True, default=False)
+
+        class NullableBooleanSerializer(serializers.ModelSerializer):
+            class Meta:
+                model = NullableBooleanModel
+                fields = ['field']
+
+        expected = dedent("""
+            NullableBooleanSerializer():
+                field = BooleanField(allow_null=True, required=False)
+        """)
+
+        self.assertEqual(repr(NullableBooleanSerializer()), expected)
 
     def test_method_field(self):
         """
@@ -361,7 +372,7 @@ class TestDurationFieldMapping(TestCase):
                 id = IntegerField(label='ID', read_only=True)
                 duration_field = DurationField()
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_duration_field_with_validators(self):
         class ValidatedDurationFieldModel(models.Model):
@@ -381,8 +392,12 @@ class TestDurationFieldMapping(TestCase):
             TestSerializer():
                 id = IntegerField(label='ID', read_only=True)
                 duration_field = DurationField(max_value=datetime.timedelta(3), min_value=datetime.timedelta(1))
+        """) if sys.version_info < (3, 7) else dedent("""
+            TestSerializer():
+                id = IntegerField(label='ID', read_only=True)
+                duration_field = DurationField(max_value=datetime.timedelta(days=3), min_value=datetime.timedelta(days=1))
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
 
 class TestGenericIPAddressFieldValidation(TestCase):
@@ -399,7 +414,7 @@ class TestGenericIPAddressFieldValidation(TestCase):
         self.assertFalse(s.is_valid())
         self.assertEqual(1, len(s.errors['address']),
                          'Unexpected number of validation errors: '
-                         '{0}'.format(s.errors))
+                         '{}'.format(s.errors))
 
 
 @pytest.mark.skipif('not postgres_fields')
@@ -417,7 +432,7 @@ class TestPosgresFieldsMapping(TestCase):
             TestSerializer():
                 hstore_field = HStoreField()
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_array_field(self):
         class ArrayFieldModel(models.Model):
@@ -432,7 +447,7 @@ class TestPosgresFieldsMapping(TestCase):
             TestSerializer():
                 array_field = ListField(child=CharField(label='Array field', validators=[<django.core.validators.MaxLengthValidator object>]))
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_json_field(self):
         class JSONFieldModel(models.Model):
@@ -447,7 +462,7 @@ class TestPosgresFieldsMapping(TestCase):
             TestSerializer():
                 json_field = JSONField(style={'base_template': 'textarea.html'})
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
 
 # Tests for relational field mappings.
@@ -505,7 +520,7 @@ class TestRelationalFieldMappings(TestCase):
                 many_to_many = PrimaryKeyRelatedField(allow_empty=False, many=True, queryset=ManyToManyTargetModel.objects.all())
                 through = PrimaryKeyRelatedField(many=True, read_only=True)
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_nested_relations(self):
         class TestSerializer(serializers.ModelSerializer):
@@ -530,7 +545,7 @@ class TestRelationalFieldMappings(TestCase):
                     id = IntegerField(label='ID', read_only=True)
                     name = CharField(max_length=100)
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_hyperlinked_relations(self):
         class TestSerializer(serializers.HyperlinkedModelSerializer):
@@ -546,7 +561,7 @@ class TestRelationalFieldMappings(TestCase):
                 many_to_many = HyperlinkedRelatedField(allow_empty=False, many=True, queryset=ManyToManyTargetModel.objects.all(), view_name='manytomanytargetmodel-detail')
                 through = HyperlinkedRelatedField(many=True, read_only=True, view_name='throughtargetmodel-detail')
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_nested_hyperlinked_relations(self):
         class TestSerializer(serializers.HyperlinkedModelSerializer):
@@ -571,7 +586,7 @@ class TestRelationalFieldMappings(TestCase):
                     url = HyperlinkedIdentityField(view_name='throughtargetmodel-detail')
                     name = CharField(max_length=100)
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_nested_hyperlinked_relations_starred_source(self):
         class TestSerializer(serializers.HyperlinkedModelSerializer):
@@ -602,7 +617,7 @@ class TestRelationalFieldMappings(TestCase):
                     name = CharField(max_length=100)
         """)
         self.maxDiff = None
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_nested_unique_together_relations(self):
         class TestSerializer(serializers.HyperlinkedModelSerializer):
@@ -621,14 +636,7 @@ class TestRelationalFieldMappings(TestCase):
                     url = HyperlinkedIdentityField(view_name='onetoonetargetmodel-detail')
                     name = CharField(max_length=100)
         """)
-        if six.PY2:
-            # This case is also too awkward to resolve fully across both py2
-            # and py3.  (See above)
-            expected = expected.replace(
-                "('foreign_key', 'one_to_one')",
-                "(u'foreign_key', u'one_to_one')"
-            )
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_pk_reverse_foreign_key(self):
         class TestSerializer(serializers.ModelSerializer):
@@ -642,7 +650,7 @@ class TestRelationalFieldMappings(TestCase):
                 name = CharField(max_length=100)
                 reverse_foreign_key = PrimaryKeyRelatedField(many=True, queryset=RelationalModel.objects.all())
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_pk_reverse_one_to_one(self):
         class TestSerializer(serializers.ModelSerializer):
@@ -656,7 +664,7 @@ class TestRelationalFieldMappings(TestCase):
                 name = CharField(max_length=100)
                 reverse_one_to_one = PrimaryKeyRelatedField(queryset=RelationalModel.objects.all())
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_pk_reverse_many_to_many(self):
         class TestSerializer(serializers.ModelSerializer):
@@ -670,7 +678,7 @@ class TestRelationalFieldMappings(TestCase):
                 name = CharField(max_length=100)
                 reverse_many_to_many = PrimaryKeyRelatedField(many=True, queryset=RelationalModel.objects.all())
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
     def test_pk_reverse_through(self):
         class TestSerializer(serializers.ModelSerializer):
@@ -684,7 +692,7 @@ class TestRelationalFieldMappings(TestCase):
                 name = CharField(max_length=100)
                 reverse_through = PrimaryKeyRelatedField(many=True, read_only=True)
         """)
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
 
 class DisplayValueTargetModel(models.Model):
@@ -1053,9 +1061,9 @@ class TestMetaInheritance(TestCase):
                 char_field = CharField(max_length=100)
                 non_model_field = CharField()
         """)
-        self.assertEqual(unicode_repr(ChildSerializer()), child_expected)
-        self.assertEqual(unicode_repr(TestSerializer()), test_expected)
-        self.assertEqual(unicode_repr(ChildSerializer()), child_expected)
+        self.assertEqual(repr(ChildSerializer()), child_expected)
+        self.assertEqual(repr(TestSerializer()), test_expected)
+        self.assertEqual(repr(ChildSerializer()), child_expected)
 
 
 class OneToOneTargetTestModel(models.Model):
@@ -1124,14 +1132,14 @@ class Issue3674Test(TestCase):
                 title = CharField(max_length=64)
                 children = PrimaryKeyRelatedField(many=True, queryset=TestChildModel.objects.all())
         """)
-        self.assertEqual(unicode_repr(TestParentModelSerializer()), parent_expected)
+        self.assertEqual(repr(TestParentModelSerializer()), parent_expected)
 
         child_expected = dedent("""
             TestChildModelSerializer():
                 value = CharField(max_length=64, validators=[<UniqueValidator(queryset=TestChildModel.objects.all())>])
                 parent = PrimaryKeyRelatedField(queryset=TestParentModel.objects.all())
         """)
-        self.assertEqual(unicode_repr(TestChildModelSerializer()), child_expected)
+        self.assertEqual(repr(TestChildModelSerializer()), child_expected)
 
     def test_nonID_PK_foreignkey_model_serializer(self):
 
@@ -1223,7 +1231,7 @@ class TestFieldSource(TestCase):
                 number_field = IntegerField(source='integer_field')
         """)
         self.maxDiff = None
-        self.assertEqual(unicode_repr(TestSerializer()), expected)
+        self.assertEqual(repr(TestSerializer()), expected)
 
 
 class Issue6110TestModel(models.Model):
diff --git a/tests/test_multitable_inheritance.py b/tests/test_multitable_inheritance.py
index 2ddd37ebb..1e8ab3448 100644
--- a/tests/test_multitable_inheritance.py
+++ b/tests/test_multitable_inheritance.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.db import models
 from django.test import TestCase
 
diff --git a/tests/test_negotiation.py b/tests/test_negotiation.py
index 7ce3f92a9..089a86c62 100644
--- a/tests/test_negotiation.py
+++ b/tests/test_negotiation.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import pytest
 from django.http import Http404
 from django.test import TestCase
@@ -80,7 +78,7 @@ class TestAcceptedMediaType(TestCase):
         assert str(mediatype) == 'test/*; foo=bar'
 
     def test_raise_error_if_no_suitable_renderers_found(self):
-        class MockRenderer(object):
+        class MockRenderer:
             format = 'xml'
         renderers = [MockRenderer()]
         with pytest.raises(Http404):
diff --git a/tests/test_one_to_one_with_inheritance.py b/tests/test_one_to_one_with_inheritance.py
index 789c7fcb9..40793d7ca 100644
--- a/tests/test_one_to_one_with_inheritance.py
+++ b/tests/test_one_to_one_with_inheritance.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.db import models
 from django.test import TestCase
 
diff --git a/tests/test_pagination.py b/tests/test_pagination.py
index d9ad9e6f6..3c581ddfb 100644
--- a/tests/test_pagination.py
+++ b/tests/test_pagination.py
@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import pytest
 from django.core.paginator import Paginator as DjangoPaginator
 from django.db import models
@@ -207,7 +204,7 @@ class TestPageNumberPagination:
             ]
         }
         assert self.pagination.display_page_controls
-        assert isinstance(self.pagination.to_html(), type(''))
+        assert isinstance(self.pagination.to_html(), str)
 
     def test_second_page(self):
         request = Request(factory.get('/', {'page': 2}))
@@ -313,7 +310,7 @@ class TestPageNumberPaginationOverride:
             ]
         }
         assert not self.pagination.display_page_controls
-        assert isinstance(self.pagination.to_html(), type(''))
+        assert isinstance(self.pagination.to_html(), str)
 
     def test_invalid_page(self):
         request = Request(factory.get('/', {'page': 'invalid'}))
@@ -368,7 +365,7 @@ class TestLimitOffset:
             ]
         }
         assert self.pagination.display_page_controls
-        assert isinstance(self.pagination.to_html(), type(''))
+        assert isinstance(self.pagination.to_html(), str)
 
     def test_pagination_not_applied_if_limit_or_default_limit_not_set(self):
         class MockPagination(pagination.LimitOffsetPagination):
@@ -502,7 +499,7 @@ class TestLimitOffset:
         content = self.get_paginated_content(queryset)
         next_limit = self.pagination.default_limit
         next_offset = self.pagination.default_limit
-        next_url = 'http://testserver/?limit={0}&offset={1}'.format(next_limit, next_offset)
+        next_url = 'http://testserver/?limit={}&offset={}'.format(next_limit, next_offset)
         assert queryset == [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
         assert content.get('next') == next_url
 
@@ -515,7 +512,7 @@ class TestLimitOffset:
         content = self.get_paginated_content(queryset)
         next_limit = self.pagination.default_limit
         next_offset = self.pagination.default_limit
-        next_url = 'http://testserver/?limit={0}&offset={1}'.format(next_limit, next_offset)
+        next_url = 'http://testserver/?limit={}&offset={}'.format(next_limit, next_offset)
         assert queryset == [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
         assert content.get('next') == next_url
 
@@ -531,9 +528,9 @@ class TestLimitOffset:
         max_limit = self.pagination.max_limit
         next_offset = offset + max_limit
         prev_offset = offset - max_limit
-        base_url = 'http://testserver/?limit={0}'.format(max_limit)
-        next_url = base_url + '&offset={0}'.format(next_offset)
-        prev_url = base_url + '&offset={0}'.format(prev_offset)
+        base_url = 'http://testserver/?limit={}'.format(max_limit)
+        next_url = base_url + '&offset={}'.format(next_offset)
+        prev_url = base_url + '&offset={}'.format(prev_offset)
         assert queryset == list(range(51, 66))
         assert content.get('next') == next_url
         assert content.get('previous') == prev_url
@@ -631,7 +628,7 @@ class CursorPaginationTestsMixin:
         assert current == [1, 1, 1, 1, 1]
         assert next == [1, 2, 3, 4, 4]
 
-        assert isinstance(self.pagination.to_html(), type(''))
+        assert isinstance(self.pagination.to_html(), str)
 
     def test_cursor_pagination_with_page_size(self):
         (previous, current, next, previous_url, next_url) = self.get_pages('/?page_size=20')
@@ -798,11 +795,11 @@ class TestCursorPagination(CursorPaginationTestsMixin):
     """
 
     def setup(self):
-        class MockObject(object):
+        class MockObject:
             def __init__(self, idx):
                 self.created = idx
 
-        class MockQuerySet(object):
+        class MockQuerySet:
             def __init__(self, items):
                 self.items = items
 
diff --git a/tests/test_parsers.py b/tests/test_parsers.py
index d1287ecd6..dcd62fac9 100644
--- a/tests/test_parsers.py
+++ b/tests/test_parsers.py
@@ -1,6 +1,4 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
+import io
 import math
 
 import pytest
@@ -10,7 +8,6 @@ from django.core.files.uploadhandler import (
 )
 from django.http.request import RawPostDataException
 from django.test import TestCase
-from django.utils.six import BytesIO, StringIO
 
 from rest_framework.exceptions import ParseError
 from rest_framework.parsers import (
@@ -33,7 +30,7 @@ class TestFormParser(TestCase):
         """ Make sure the `QueryDict` works OK """
         parser = FormParser()
 
-        stream = StringIO(self.string)
+        stream = io.StringIO(self.string)
         data = parser.parse(stream)
 
         assert Form(data).is_valid() is True
@@ -41,11 +38,9 @@ class TestFormParser(TestCase):
 
 class TestFileUploadParser(TestCase):
     def setUp(self):
-        class MockRequest(object):
+        class MockRequest:
             pass
-        self.stream = BytesIO(
-            "Test text file".encode('utf-8')
-        )
+        self.stream = io.BytesIO(b"Test text file")
         request = MockRequest()
         request.upload_handlers = (MemoryFileUploadHandler(),)
         request.META = {
@@ -131,7 +126,7 @@ class TestFileUploadParser(TestCase):
 
 class TestJSONParser(TestCase):
     def bytes(self, value):
-        return BytesIO(value.encode('utf-8'))
+        return io.BytesIO(value.encode())
 
     def test_float_strictness(self):
         parser = JSONParser()
diff --git a/tests/test_permissions.py b/tests/test_permissions.py
index 37540eb8e..9c9300694 100644
--- a/tests/test_permissions.py
+++ b/tests/test_permissions.py
@@ -1,19 +1,20 @@
-from __future__ import unicode_literals
-
 import base64
 import unittest
+import warnings
+from unittest import mock
 
 import django
-from django.contrib.auth.models import Group, Permission, User
+import pytest
+from django.contrib.auth.models import AnonymousUser, Group, Permission, User
 from django.db import models
 from django.test import TestCase
 from django.urls import ResolverMatch
 
 from rest_framework import (
-    HTTP_HEADER_ENCODING, authentication, generics, permissions, serializers,
-    status, views
+    HTTP_HEADER_ENCODING, RemovedInDRF310Warning, authentication, generics,
+    permissions, serializers, status, views
 )
-from rest_framework.compat import is_guardian_installed
+from rest_framework.compat import PY36, is_guardian_installed
 from rest_framework.filters import DjangoObjectPermissionsFilter
 from rest_framework.routers import DefaultRouter
 from rest_framework.test import APIRequestFactory
@@ -329,14 +330,14 @@ class ObjectPermissionsIntegrationTests(TestCase):
         everyone = Group.objects.create(name='everyone')
         model_name = BasicPermModel._meta.model_name
         app_label = BasicPermModel._meta.app_label
-        f = '{0}_{1}'.format
+        f = '{}_{}'.format
         perms = {
             'view': f('view', model_name),
             'change': f('change', model_name),
             'delete': f('delete', model_name)
         }
         for perm in perms.values():
-            perm = '{0}.{1}'.format(app_label, perm)
+            perm = '{}.{}'.format(app_label, perm)
             assign_perm(perm, everyone)
         everyone.user_set.add(*users.values())
 
@@ -417,17 +418,34 @@ class ObjectPermissionsIntegrationTests(TestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
 
     # Read list
+    def test_django_object_permissions_filter_deprecated(self):
+        with warnings.catch_warnings(record=True) as w:
+            warnings.simplefilter("always")
+            DjangoObjectPermissionsFilter()
+
+        message = ("`DjangoObjectPermissionsFilter` has been deprecated and moved "
+                   "to the 3rd-party django-rest-framework-guardian package.")
+        self.assertEqual(len(w), 1)
+        self.assertIs(w[-1].category, RemovedInDRF310Warning)
+        self.assertEqual(str(w[-1].message), message)
+
     def test_can_read_list_permissions(self):
         request = factory.get('/', HTTP_AUTHORIZATION=self.credentials['readonly'])
         object_permissions_list_view.cls.filter_backends = (DjangoObjectPermissionsFilter,)
-        response = object_permissions_list_view(request)
+        # TODO: remove in version 3.10
+        with warnings.catch_warnings(record=True):
+            warnings.simplefilter("always")
+            response = object_permissions_list_view(request)
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response.data[0].get('id'), 1)
 
     def test_cannot_read_list_permissions(self):
         request = factory.get('/', HTTP_AUTHORIZATION=self.credentials['writeonly'])
         object_permissions_list_view.cls.filter_backends = (DjangoObjectPermissionsFilter,)
-        response = object_permissions_list_view(request)
+        # TODO: remove in version 3.10
+        with warnings.catch_warnings(record=True):
+            warnings.simplefilter("always")
+            response = object_permissions_list_view(request)
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertListEqual(response.data, [])
 
@@ -522,3 +540,170 @@ class CustomPermissionsTests(TestCase):
             detail = response.data.get('detail')
             self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
             self.assertEqual(detail, self.custom_message)
+
+
+class PermissionsCompositionTests(TestCase):
+
+    def setUp(self):
+        self.username = 'john'
+        self.email = 'lennon@thebeatles.com'
+        self.password = 'password'
+        self.user = User.objects.create_user(
+            self.username,
+            self.email,
+            self.password
+        )
+        self.client.login(username=self.username, password=self.password)
+
+    def test_and_false(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+        composed_perm = permissions.IsAuthenticated & permissions.AllowAny
+        assert composed_perm().has_permission(request, None) is False
+
+    def test_and_true(self):
+        request = factory.get('/1', format='json')
+        request.user = self.user
+        composed_perm = permissions.IsAuthenticated & permissions.AllowAny
+        assert composed_perm().has_permission(request, None) is True
+
+    def test_or_false(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+        composed_perm = permissions.IsAuthenticated | permissions.AllowAny
+        assert composed_perm().has_permission(request, None) is True
+
+    def test_or_true(self):
+        request = factory.get('/1', format='json')
+        request.user = self.user
+        composed_perm = permissions.IsAuthenticated | permissions.AllowAny
+        assert composed_perm().has_permission(request, None) is True
+
+    def test_not_false(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+        composed_perm = ~permissions.IsAuthenticated
+        assert composed_perm().has_permission(request, None) is True
+
+    def test_not_true(self):
+        request = factory.get('/1', format='json')
+        request.user = self.user
+        composed_perm = ~permissions.AllowAny
+        assert composed_perm().has_permission(request, None) is False
+
+    def test_several_levels_without_negation(self):
+        request = factory.get('/1', format='json')
+        request.user = self.user
+        composed_perm = (
+            permissions.IsAuthenticated &
+            permissions.IsAuthenticated &
+            permissions.IsAuthenticated &
+            permissions.IsAuthenticated
+        )
+        assert composed_perm().has_permission(request, None) is True
+
+    def test_several_levels_and_precedence_with_negation(self):
+        request = factory.get('/1', format='json')
+        request.user = self.user
+        composed_perm = (
+            permissions.IsAuthenticated &
+            ~ permissions.IsAdminUser &
+            permissions.IsAuthenticated &
+            ~(permissions.IsAdminUser & permissions.IsAdminUser)
+        )
+        assert composed_perm().has_permission(request, None) is True
+
+    def test_several_levels_and_precedence(self):
+        request = factory.get('/1', format='json')
+        request.user = self.user
+        composed_perm = (
+            permissions.IsAuthenticated &
+            permissions.IsAuthenticated |
+            permissions.IsAuthenticated &
+            permissions.IsAuthenticated
+        )
+        assert composed_perm().has_permission(request, None) is True
+
+    @pytest.mark.skipif(not PY36, reason="assert_called_once() not available")
+    def test_or_lazyness(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+
+        with mock.patch.object(permissions.AllowAny, 'has_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.AllowAny | permissions.IsAuthenticated)
+                hasperm = composed_perm().has_permission(request, None)
+                self.assertIs(hasperm, True)
+                mock_allow.assert_called_once()
+                mock_deny.assert_not_called()
+
+        with mock.patch.object(permissions.AllowAny, 'has_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.IsAuthenticated | permissions.AllowAny)
+                hasperm = composed_perm().has_permission(request, None)
+                self.assertIs(hasperm, True)
+                mock_deny.assert_called_once()
+                mock_allow.assert_called_once()
+
+    @pytest.mark.skipif(not PY36, reason="assert_called_once() not available")
+    def test_object_or_lazyness(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+
+        with mock.patch.object(permissions.AllowAny, 'has_object_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_object_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.AllowAny | permissions.IsAuthenticated)
+                hasperm = composed_perm().has_object_permission(request, None, None)
+                self.assertIs(hasperm, True)
+                mock_allow.assert_called_once()
+                mock_deny.assert_not_called()
+
+        with mock.patch.object(permissions.AllowAny, 'has_object_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_object_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.IsAuthenticated | permissions.AllowAny)
+                hasperm = composed_perm().has_object_permission(request, None, None)
+                self.assertIs(hasperm, True)
+                mock_deny.assert_called_once()
+                mock_allow.assert_called_once()
+
+    @pytest.mark.skipif(not PY36, reason="assert_called_once() not available")
+    def test_and_lazyness(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+
+        with mock.patch.object(permissions.AllowAny, 'has_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.AllowAny & permissions.IsAuthenticated)
+                hasperm = composed_perm().has_permission(request, None)
+                self.assertIs(hasperm, False)
+                mock_allow.assert_called_once()
+                mock_deny.assert_called_once()
+
+        with mock.patch.object(permissions.AllowAny, 'has_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.IsAuthenticated & permissions.AllowAny)
+                hasperm = composed_perm().has_permission(request, None)
+                self.assertIs(hasperm, False)
+                mock_allow.assert_not_called()
+                mock_deny.assert_called_once()
+
+    @pytest.mark.skipif(not PY36, reason="assert_called_once() not available")
+    def test_object_and_lazyness(self):
+        request = factory.get('/1', format='json')
+        request.user = AnonymousUser()
+
+        with mock.patch.object(permissions.AllowAny, 'has_object_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_object_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.AllowAny & permissions.IsAuthenticated)
+                hasperm = composed_perm().has_object_permission(request, None, None)
+                self.assertIs(hasperm, False)
+                mock_allow.assert_called_once()
+                mock_deny.assert_called_once()
+
+        with mock.patch.object(permissions.AllowAny, 'has_object_permission', return_value=True) as mock_allow:
+            with mock.patch.object(permissions.IsAuthenticated, 'has_object_permission', return_value=False) as mock_deny:
+                composed_perm = (permissions.IsAuthenticated & permissions.AllowAny)
+                hasperm = composed_perm().has_object_permission(request, None, None)
+                self.assertIs(hasperm, False)
+                mock_allow.assert_not_called()
+                mock_deny.assert_called_once()
diff --git a/tests/test_relations.py b/tests/test_relations.py
index 3c4b7d90b..3281b7ea2 100644
--- a/tests/test_relations.py
+++ b/tests/test_relations.py
@@ -26,7 +26,7 @@ class TestStringRelatedField(APISimpleTestCase):
         assert representation == '<MockObject name=foo, pk=1>'
 
 
-class MockApiSettings(object):
+class MockApiSettings:
     def __init__(self, cutoff, cutoff_text):
         self.HTML_SELECT_CUTOFF = cutoff
         self.HTML_SELECT_CUTOFF_TEXT = cutoff_text
diff --git a/tests/test_relations_hyperlink.py b/tests/test_relations_hyperlink.py
index 887a6f423..5ad0e31ff 100644
--- a/tests/test_relations_hyperlink.py
+++ b/tests/test_relations_hyperlink.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 from django.test import TestCase, override_settings
 
diff --git a/tests/test_relations_pk.py b/tests/test_relations_pk.py
index 3317d6251..0da9da890 100644
--- a/tests/test_relations_pk.py
+++ b/tests/test_relations_pk.py
@@ -1,12 +1,10 @@
-from __future__ import unicode_literals
-
 from django.test import TestCase
-from django.utils import six
 
 from rest_framework import serializers
 from tests.models import (
-    ForeignKeySource, ForeignKeyTarget, ManyToManySource, ManyToManyTarget,
-    NullableForeignKeySource, NullableOneToOneSource,
+    ForeignKeySource, ForeignKeySourceWithLimitedChoices,
+    ForeignKeySourceWithQLimitedChoices, ForeignKeyTarget, ManyToManySource,
+    ManyToManyTarget, NullableForeignKeySource, NullableOneToOneSource,
     NullableUUIDForeignKeySource, OneToOnePKSource, OneToOneTarget,
     UUIDForeignKeyTarget
 )
@@ -38,6 +36,12 @@ class ForeignKeySourceSerializer(serializers.ModelSerializer):
         fields = ('id', 'name', 'target')
 
 
+class ForeignKeySourceWithLimitedChoicesSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ForeignKeySourceWithLimitedChoices
+        fields = ("id", "target")
+
+
 # Nullable ForeignKey
 class NullableForeignKeySourceSerializer(serializers.ModelSerializer):
     class Meta:
@@ -256,7 +260,7 @@ class PKForeignKeyTests(TestCase):
         instance = ForeignKeySource.objects.get(pk=1)
         serializer = ForeignKeySourceSerializer(instance, data=data)
         assert not serializer.is_valid()
-        assert serializer.errors == {'target': ['Incorrect type. Expected pk value, received %s.' % six.text_type.__name__]}
+        assert serializer.errors == {'target': ['Incorrect type. Expected pk value, received str.']}
 
     def test_reverse_foreign_key_update(self):
         data = {'id': 2, 'name': 'target-2', 'sources': [1, 3]}
@@ -360,6 +364,30 @@ class PKForeignKeyTests(TestCase):
         serializer.is_valid(raise_exception=True)
         assert 'target' not in serializer.validated_data
 
+    def test_queryset_size_without_limited_choices(self):
+        limited_target = ForeignKeyTarget(name="limited-target")
+        limited_target.save()
+        queryset = ForeignKeySourceSerializer().fields["target"].get_queryset()
+        assert len(queryset) == 3
+
+    def test_queryset_size_with_limited_choices(self):
+        limited_target = ForeignKeyTarget(name="limited-target")
+        limited_target.save()
+        queryset = ForeignKeySourceWithLimitedChoicesSerializer().fields["target"].get_queryset()
+        assert len(queryset) == 1
+
+    def test_queryset_size_with_Q_limited_choices(self):
+        limited_target = ForeignKeyTarget(name="limited-target")
+        limited_target.save()
+
+        class QLimitedChoicesSerializer(serializers.ModelSerializer):
+            class Meta:
+                model = ForeignKeySourceWithQLimitedChoices
+                fields = ("id", "target")
+
+        queryset = QLimitedChoicesSerializer().fields["target"].get_queryset()
+        assert len(queryset) == 1
+
 
 class PKNullableForeignKeyTests(TestCase):
     def setUp(self):
@@ -531,7 +559,7 @@ class OneToOnePrimaryKeyTests(TestCase):
         # When: Trying to create a second object
         second_source = OneToOnePKSourceSerializer(data=data)
         self.assertFalse(second_source.is_valid())
-        expected = {'target': [u'one to one pk source with this target already exists.']}
+        expected = {'target': ['one to one pk source with this target already exists.']}
         self.assertDictEqual(second_source.errors, expected)
 
     def test_one_to_one_when_primary_key_does_not_exist(self):
diff --git a/tests/test_renderers.py b/tests/test_renderers.py
index a68ece734..d63dbcb9c 100644
--- a/tests/test_renderers.py
+++ b/tests/test_renderers.py
@@ -1,18 +1,16 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
 import re
-from collections import MutableMapping, OrderedDict
+from collections import OrderedDict
+from collections.abc import MutableMapping
 
 import pytest
 from django.conf.urls import include, url
 from django.core.cache import cache
 from django.db import models
 from django.http.request import HttpRequest
+from django.template import loader
 from django.test import TestCase, override_settings
-from django.utils import six
 from django.utils.safestring import SafeText
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from rest_framework import permissions, serializers, status
 from rest_framework.compat import coreapi
@@ -78,8 +76,7 @@ class MockView(APIView):
     renderer_classes = (RendererA, RendererB)
 
     def get(self, request, **kwargs):
-        response = Response(DUMMYCONTENT, status=DUMMYSTATUS)
-        return response
+        return Response(DUMMYCONTENT, status=DUMMYSTATUS)
 
 
 class MockGETView(APIView):
@@ -174,7 +171,7 @@ class RendererEndToEndTests(TestCase):
         resp = self.client.head('/')
         self.assertEqual(resp.status_code, DUMMYSTATUS)
         self.assertEqual(resp['Content-Type'], RendererA.media_type + '; charset=utf-8')
-        self.assertEqual(resp.content, six.b(''))
+        self.assertEqual(resp.content, b'')
 
     def test_default_renderer_serializes_content_on_accept_any(self):
         """If the Accept header is set to */* the default renderer should serialize the response."""
@@ -306,14 +303,14 @@ class JSONRendererTests(TestCase):
         o = DummyTestModel.objects.create(name='dummy')
         qs = DummyTestModel.objects.values('id', 'name')
         ret = JSONRenderer().render(qs)
-        data = json.loads(ret.decode('utf-8'))
+        data = json.loads(ret.decode())
         self.assertEqual(data, [{'id': o.id, 'name': o.name}])
 
     def test_render_queryset_values_list(self):
         o = DummyTestModel.objects.create(name='dummy')
         qs = DummyTestModel.objects.values_list('id', 'name')
         ret = JSONRenderer().render(qs)
-        data = json.loads(ret.decode('utf-8'))
+        data = json.loads(ret.decode())
         self.assertEqual(data, [[o.id, o.name]])
 
     def test_render_dict_abc_obj(self):
@@ -343,11 +340,11 @@ class JSONRendererTests(TestCase):
         x['key'] = 'string value'
         x[2] = 3
         ret = JSONRenderer().render(x)
-        data = json.loads(ret.decode('utf-8'))
+        data = json.loads(ret.decode())
         self.assertEqual(data, {'key': 'string value', '2': 3})
 
     def test_render_obj_with_getitem(self):
-        class DictLike(object):
+        class DictLike:
             def __init__(self):
                 self._dict = {}
 
@@ -383,7 +380,7 @@ class JSONRendererTests(TestCase):
         renderer = JSONRenderer()
         content = renderer.render(obj, 'application/json')
         # Fix failing test case which depends on version of JSON library.
-        self.assertEqual(content.decode('utf-8'), _flat_repr)
+        self.assertEqual(content.decode(), _flat_repr)
 
     def test_with_content_type_args(self):
         """
@@ -392,7 +389,7 @@ class JSONRendererTests(TestCase):
         obj = {'foo': ['bar', 'baz']}
         renderer = JSONRenderer()
         content = renderer.render(obj, 'application/json; indent=2')
-        self.assertEqual(strip_trailing_whitespace(content.decode('utf-8')), _indented_repr)
+        self.assertEqual(strip_trailing_whitespace(content.decode()), _indented_repr)
 
 
 class UnicodeJSONRendererTests(TestCase):
@@ -403,7 +400,7 @@ class UnicodeJSONRendererTests(TestCase):
         obj = {'countries': ['United Kingdom', 'France', 'España']}
         renderer = JSONRenderer()
         content = renderer.render(obj, 'application/json')
-        self.assertEqual(content, '{"countries":["United Kingdom","France","España"]}'.encode('utf-8'))
+        self.assertEqual(content, '{"countries":["United Kingdom","France","España"]}'.encode())
 
     def test_u2028_u2029(self):
         # The \u2028 and \u2029 characters should be escaped,
@@ -412,7 +409,7 @@ class UnicodeJSONRendererTests(TestCase):
         obj = {'should_escape': '\u2028\u2029'}
         renderer = JSONRenderer()
         content = renderer.render(obj, 'application/json')
-        self.assertEqual(content, '{"should_escape":"\\u2028\\u2029"}'.encode('utf-8'))
+        self.assertEqual(content, '{"should_escape":"\\u2028\\u2029"}'.encode())
 
 
 class AsciiJSONRendererTests(TestCase):
@@ -425,7 +422,7 @@ class AsciiJSONRendererTests(TestCase):
         obj = {'countries': ['United Kingdom', 'France', 'España']}
         renderer = AsciiJSONRenderer()
         content = renderer.render(obj, 'application/json')
-        self.assertEqual(content, '{"countries":["United Kingdom","France","Espa\\u00f1a"]}'.encode('utf-8'))
+        self.assertEqual(content, '{"countries":["United Kingdom","France","Espa\\u00f1a"]}'.encode())
 
 
 # Tests for caching issue, #346
@@ -635,7 +632,7 @@ class BrowsableAPIRendererTests(URLPatternsTestCase):
             raise NotImplementedError
 
     router = SimpleRouter()
-    router.register('examples', ExampleViewSet, base_name='example')
+    router.register('examples', ExampleViewSet, basename='example')
     urlpatterns = [url(r'^api/', include(router.urls))]
 
     def setUp(self):
@@ -646,7 +643,7 @@ class BrowsableAPIRendererTests(URLPatternsTestCase):
         assert self.renderer.get_description({}, status_code=403) == ''
 
     def test_get_filter_form_returns_none_if_data_is_not_list_instance(self):
-        class DummyView(object):
+        class DummyView:
             get_queryset = None
             filter_backends = None
 
@@ -656,9 +653,9 @@ class BrowsableAPIRendererTests(URLPatternsTestCase):
 
     def test_extra_actions_dropdown(self):
         resp = self.client.get('/api/examples/', HTTP_ACCEPT='text/html')
-        assert 'id="extra-actions-menu"' in resp.content.decode('utf-8')
-        assert '/api/examples/list_action/' in resp.content.decode('utf-8')
-        assert '>Extra list action<' in resp.content.decode('utf-8')
+        assert 'id="extra-actions-menu"' in resp.content.decode()
+        assert '/api/examples/list_action/' in resp.content.decode()
+        assert '>Extra list action<' in resp.content.decode()
 
 
 class AdminRendererTests(TestCase):
@@ -827,6 +824,16 @@ class TestDocumentationRenderer(TestCase):
         html = renderer.render(document, accepted_media_type="text/html", renderer_context={"request": request})
         assert '<h1>Data Endpoint API</h1>' in html
 
+    def test_shell_code_example_rendering(self):
+        template = loader.get_template('rest_framework/docs/langs/shell.html')
+        context = {
+            'document': coreapi.Document(url='https://api.example.org/'),
+            'link_key': 'testcases > list',
+            'link': coreapi.Link(url='/data/', action='get', fields=[]),
+        }
+        html = template.render(context)
+        assert 'testcases list' in html
+
 
 @pytest.mark.skipif(not coreapi, reason='coreapi is not installed')
 class TestSchemaJSRenderer(TestCase):
diff --git a/tests/test_request.py b/tests/test_request.py
index 83d295a12..0f682deb0 100644
--- a/tests/test_request.py
+++ b/tests/test_request.py
@@ -1,8 +1,6 @@
 """
 Tests for content parsing, and form-overloaded content parsing.
 """
-from __future__ import unicode_literals
-
 import os.path
 import tempfile
 
@@ -15,7 +13,6 @@ from django.contrib.sessions.middleware import SessionMiddleware
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.http.request import RawPostDataException
 from django.test import TestCase, override_settings
-from django.utils import six
 
 from rest_framework import status
 from rest_framework.authentication import SessionAuthentication
@@ -82,7 +79,7 @@ class TestContentParsing(TestCase):
         Ensure request.data returns content for POST request with
         non-form content.
         """
-        content = six.b('qwerty')
+        content = b'qwerty'
         content_type = 'text/plain'
         request = Request(factory.post('/', content, content_type=content_type))
         request.parsers = (PlainTextParser(),)
@@ -121,7 +118,7 @@ class TestContentParsing(TestCase):
         Ensure request.data returns content for PUT request with
         non-form content.
         """
-        content = six.b('qwerty')
+        content = b'qwerty'
         content_type = 'text/plain'
         request = Request(factory.put('/', content, content_type=content_type))
         request.parsers = (PlainTextParser(), )
@@ -235,7 +232,7 @@ class TestUserSetter(TestCase):
         This proves that when an AttributeError is raised inside of the request.user
         property, that we can handle this and report the true, underlying error.
         """
-        class AuthRaisesAttributeError(object):
+        class AuthRaisesAttributeError:
             def authenticate(self, request):
                 self.MISSPELLED_NAME_THAT_DOESNT_EXIST
 
@@ -249,10 +246,6 @@ class TestUserSetter(TestCase):
         with pytest.raises(WrappedAttributeError, match=expected):
             request.user
 
-        # python 2 hasattr fails for *any* exception, not just AttributeError
-        if six.PY2:
-            return
-
         with pytest.raises(WrappedAttributeError, match=expected):
             hasattr(request, 'user')
 
diff --git a/tests/test_requests_client.py b/tests/test_requests_client.py
index 161429f73..59b388c5a 100644
--- a/tests/test_requests_client.py
+++ b/tests/test_requests_client.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import unittest
 
 from django.conf.urls import url
diff --git a/tests/test_response.py b/tests/test_response.py
index e92bf54c1..d3a56d01b 100644
--- a/tests/test_response.py
+++ b/tests/test_response.py
@@ -1,8 +1,5 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import include, url
 from django.test import TestCase, override_settings
-from django.utils import six
 
 from rest_framework import generics, routers, serializers, status, viewsets
 from rest_framework.parsers import JSONParser
@@ -150,7 +147,7 @@ class RendererIntegrationTests(TestCase):
         resp = self.client.head('/')
         self.assertEqual(resp.status_code, DUMMYSTATUS)
         self.assertEqual(resp['Content-Type'], RendererA.media_type + '; charset=utf-8')
-        self.assertEqual(resp.content, six.b(''))
+        self.assertEqual(resp.content, b'')
 
     def test_default_renderer_serializes_content_on_accept_any(self):
         """If the Accept header is set to */* the default renderer should serialize the response."""
@@ -260,7 +257,7 @@ class Issue807Tests(TestCase):
         """
         headers = {"HTTP_ACCEPT": RendererA.media_type}
         resp = self.client.get('/', **headers)
-        expected = "{0}; charset={1}".format(RendererA.media_type, 'utf-8')
+        expected = "{}; charset={}".format(RendererA.media_type, 'utf-8')
         self.assertEqual(expected, resp['Content-Type'])
 
     def test_if_there_is_charset_specified_on_renderer_it_gets_appended(self):
@@ -270,7 +267,7 @@ class Issue807Tests(TestCase):
         """
         headers = {"HTTP_ACCEPT": RendererC.media_type}
         resp = self.client.get('/', **headers)
-        expected = "{0}; charset={1}".format(RendererC.media_type, RendererC.charset)
+        expected = "{}; charset={}".format(RendererC.media_type, RendererC.charset)
         self.assertEqual(expected, resp['Content-Type'])
 
     def test_content_type_set_explicitly_on_response(self):
diff --git a/tests/test_reverse.py b/tests/test_reverse.py
index 145b1a54f..9ab1667c5 100644
--- a/tests/test_reverse.py
+++ b/tests/test_reverse.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 from django.test import TestCase, override_settings
 from django.urls import NoReverseMatch
@@ -19,7 +17,7 @@ urlpatterns = [
 ]
 
 
-class MockVersioningScheme(object):
+class MockVersioningScheme:
 
     def __init__(self, raise_error=False):
         self.raise_error = raise_error
diff --git a/tests/test_routers.py b/tests/test_routers.py
index 1dd2d2b0a..0f428e2a5 100644
--- a/tests/test_routers.py
+++ b/tests/test_routers.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import warnings
 from collections import namedtuple
 
@@ -10,7 +8,9 @@ from django.db import models
 from django.test import TestCase, override_settings
 from django.urls import resolve, reverse
 
-from rest_framework import permissions, serializers, viewsets
+from rest_framework import (
+    RemovedInDRF311Warning, permissions, serializers, viewsets
+)
 from rest_framework.compat import get_regex_pattern
 from rest_framework.decorators import action
 from rest_framework.response import Response
@@ -119,7 +119,7 @@ class BasicViewSet(viewsets.ViewSet):
 
 class TestSimpleRouter(URLPatternsTestCase, TestCase):
     router = SimpleRouter()
-    router.register('basics', BasicViewSet, base_name='basic')
+    router.register('basics', BasicViewSet, basename='basic')
 
     urlpatterns = [
         url(r'^api/', include(router.urls)),
@@ -158,6 +158,12 @@ class TestSimpleRouter(URLPatternsTestCase, TestCase):
         response = self.client.delete(reverse('basic-action3', args=[1]))
         assert response.data == {'delete': '1'}
 
+    def test_register_after_accessing_urls(self):
+        self.router.register(r'notes', NoteViewSet)
+        assert len(self.router.urls) == 2  # list and detail
+        self.router.register(r'notes_bis', NoteViewSet)
+        assert len(self.router.urls) == 4
+
 
 class TestRootView(URLPatternsTestCase, TestCase):
     urlpatterns = [
@@ -432,13 +438,13 @@ class TestEmptyPrefix(URLPatternsTestCase, TestCase):
     def test_empty_prefix_list(self):
         response = self.client.get('/empty-prefix/')
         assert response.status_code == 200
-        assert json.loads(response.content.decode('utf-8')) == [{'uuid': '111', 'text': 'First'},
-                                                                {'uuid': '222', 'text': 'Second'}]
+        assert json.loads(response.content.decode()) == [{'uuid': '111', 'text': 'First'},
+                                                         {'uuid': '222', 'text': 'Second'}]
 
     def test_empty_prefix_detail(self):
         response = self.client.get('/empty-prefix/1/')
         assert response.status_code == 200
-        assert json.loads(response.content.decode('utf-8')) == {'uuid': '111', 'text': 'First'}
+        assert json.loads(response.content.decode()) == {'uuid': '111', 'text': 'First'}
 
 
 class TestRegexUrlPath(URLPatternsTestCase, TestCase):
@@ -450,14 +456,14 @@ class TestRegexUrlPath(URLPatternsTestCase, TestCase):
         kwarg = '1234'
         response = self.client.get('/regex/list/{}/'.format(kwarg))
         assert response.status_code == 200
-        assert json.loads(response.content.decode('utf-8')) == {'kwarg': kwarg}
+        assert json.loads(response.content.decode()) == {'kwarg': kwarg}
 
     def test_regex_url_path_detail(self):
         pk = '1'
         kwarg = '1234'
         response = self.client.get('/regex/{}/detail/{}/'.format(pk, kwarg))
         assert response.status_code == 200
-        assert json.loads(response.content.decode('utf-8')) == {'pk': pk, 'kwarg': kwarg}
+        assert json.loads(response.content.decode()) == {'pk': pk, 'kwarg': kwarg}
 
 
 class TestViewInitkwargs(URLPatternsTestCase, TestCase):
@@ -495,18 +501,18 @@ class TestBaseNameRename(TestCase):
             warnings.simplefilter('always')
             router.register('mock', MockViewSet, 'mock', base_name='mock')
 
-        msg = "The `base_name` argument has been deprecated in favor of `basename`."
+        msg = "The `base_name` argument is pending deprecation in favor of `basename`."
         assert len(w) == 1
         assert str(w[0].message) == msg
 
     def test_base_name_argument_deprecation(self):
         router = SimpleRouter()
 
-        with warnings.catch_warnings(record=True) as w:
+        with pytest.warns(RemovedInDRF311Warning) as w:
             warnings.simplefilter('always')
             router.register('mock', MockViewSet, base_name='mock')
 
-        msg = "The `base_name` argument has been deprecated in favor of `basename`."
+        msg = "The `base_name` argument is pending deprecation in favor of `basename`."
         assert len(w) == 1
         assert str(w[0].message) == msg
         assert router.registry == [
@@ -529,7 +535,7 @@ class TestBaseNameRename(TestCase):
         msg = "`CustomRouter.get_default_base_name` method should be renamed `get_default_basename`."
 
         # Class definition should raise a warning
-        with warnings.catch_warnings(record=True) as w:
+        with pytest.warns(RemovedInDRF311Warning) as w:
             warnings.simplefilter('always')
 
             class CustomRouter(SimpleRouter):
diff --git a/tests/test_serializer.py b/tests/test_serializer.py
index 0650b7c57..e0acf368b 100644
--- a/tests/test_serializer.py
+++ b/tests/test_serializer.py
@@ -1,17 +1,13 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import inspect
 import pickle
 import re
-import unittest
-from collections import Mapping
+from collections import ChainMap
+from collections.abc import Mapping
 
 import pytest
 from django.db import models
 
-from rest_framework import fields, relations, serializers
-from rest_framework.compat import unicode_repr
+from rest_framework import exceptions, fields, relations, serializers
 from rest_framework.fields import Field
 
 from .models import (
@@ -19,15 +15,9 @@ from .models import (
 )
 from .utils import MockObject
 
-try:
-    from collections import ChainMap
-except ImportError:
-    ChainMap = False
-
 
 # Test serializer fields imports.
 # -------------------------------
-
 class TestFieldImports:
     def is_field(self, name, value):
         return (
@@ -131,7 +121,6 @@ class TestSerializer:
         assert not serializer.is_valid()
         assert serializer.errors == {'non_field_errors': ['No data provided']}
 
-    @unittest.skipUnless(ChainMap, 'requires python 3.3')
     def test_serialize_chainmap(self):
         data = ChainMap({'char': 'abc'}, {'integer': 123})
         serializer = self.Serializer(data=data)
@@ -156,6 +145,65 @@ class TestSerializer:
         assert serializer.validated_data == {'char': 'abc', 'integer': 123}
         assert serializer.errors == {}
 
+    def test_custom_to_internal_value(self):
+        """
+        to_internal_value() is expected to return a dict, but subclasses may
+        return application specific type.
+        """
+        class Point:
+            def __init__(self, srid, x, y):
+                self.srid = srid
+                self.coords = (x, y)
+
+        # Declares a serializer that converts data into an object
+        class NestedPointSerializer(serializers.Serializer):
+            longitude = serializers.FloatField(source='x')
+            latitude = serializers.FloatField(source='y')
+
+            def to_internal_value(self, data):
+                kwargs = super().to_internal_value(data)
+                return Point(srid=4326, **kwargs)
+
+        serializer = NestedPointSerializer(data={'longitude': 6.958307, 'latitude': 50.941357})
+        assert serializer.is_valid()
+        assert isinstance(serializer.validated_data, Point)
+        assert serializer.validated_data.srid == 4326
+        assert serializer.validated_data.coords[0] == 6.958307
+        assert serializer.validated_data.coords[1] == 50.941357
+        assert serializer.errors == {}
+
+    def test_iterable_validators(self):
+        """
+        Ensure `validators` parameter is compatible with reasonable iterables.
+        """
+        data = {'char': 'abc', 'integer': 123}
+
+        for validators in ([], (), set()):
+            class ExampleSerializer(serializers.Serializer):
+                char = serializers.CharField(validators=validators)
+                integer = serializers.IntegerField()
+
+            serializer = ExampleSerializer(data=data)
+            assert serializer.is_valid()
+            assert serializer.validated_data == data
+            assert serializer.errors == {}
+
+        def raise_exception(value):
+            raise exceptions.ValidationError('Raised error')
+
+        for validators in ([raise_exception], (raise_exception,), {raise_exception}):
+            class ExampleSerializer(serializers.Serializer):
+                char = serializers.CharField(validators=validators)
+                integer = serializers.IntegerField()
+
+            serializer = ExampleSerializer(data=data)
+            assert not serializer.is_valid()
+            assert serializer.data == data
+            assert serializer.validated_data == {}
+            assert serializer.errors == {'char': [
+                exceptions.ErrorDetail(string='Raised error', code='invalid')
+            ]}
+
 
 class TestValidateMethod:
     def test_non_field_error_validate_method(self):
@@ -338,23 +386,6 @@ class TestIncorrectlyConfigured:
         )
 
 
-class TestUnicodeRepr:
-    def test_unicode_repr(self):
-        class ExampleSerializer(serializers.Serializer):
-            example = serializers.CharField()
-
-        class ExampleObject:
-            def __init__(self):
-                self.example = '한국'
-
-            def __repr__(self):
-                return unicode_repr(self.example)
-
-        instance = ExampleObject()
-        serializer = ExampleSerializer(instance)
-        repr(serializer)  # Should not error.
-
-
 class TestNotRequiredOutput:
     def test_not_required_output_for_dict(self):
         """
@@ -551,7 +582,7 @@ class Test2555Regression:
     def test_serializer_context(self):
         class NestedSerializer(serializers.Serializer):
             def __init__(self, *args, **kwargs):
-                super(NestedSerializer, self).__init__(*args, **kwargs)
+                super().__init__(*args, **kwargs)
                 # .context should not cache
                 self.context
 
diff --git a/tests/test_serializer_bulk_update.py b/tests/test_serializer_bulk_update.py
index d9e5d7978..0465578bb 100644
--- a/tests/test_serializer_bulk_update.py
+++ b/tests/test_serializer_bulk_update.py
@@ -1,10 +1,7 @@
 """
 Tests to cover bulk create and update using serializers.
 """
-from __future__ import unicode_literals
-
 from django.test import TestCase
-from django.utils import six
 
 from rest_framework import serializers
 
@@ -87,8 +84,7 @@ class BulkCreateSerializerTests(TestCase):
         serializer = self.BookSerializer(data=data, many=True)
         assert serializer.is_valid() is False
 
-        text_type_string = six.text_type.__name__
-        message = 'Invalid data. Expected a dictionary, but got %s.' % text_type_string
+        message = 'Invalid data. Expected a dictionary, but got str.'
         expected_errors = [
             {'non_field_errors': [message]},
             {'non_field_errors': [message]},
diff --git a/tests/test_settings.py b/tests/test_settings.py
index 51e9751b2..b78125ff9 100644
--- a/tests/test_settings.py
+++ b/tests/test_settings.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.test import TestCase, override_settings
 
 from rest_framework.settings import APISettings, api_settings
diff --git a/tests/test_status.py b/tests/test_status.py
index 1cd6e229e..07d893bee 100644
--- a/tests/test_status.py
+++ b/tests/test_status.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from django.test import TestCase
 
 from rest_framework.status import (
diff --git a/tests/test_templates.py b/tests/test_templates.py
index a296395f6..0dba78ea2 100644
--- a/tests/test_templates.py
+++ b/tests/test_templates.py
@@ -1,7 +1,17 @@
+import re
+
 from django.shortcuts import render
 
 
+def test_base_template_with_context():
+    context = {'request': True, 'csrf_token': 'TOKEN'}
+    result = render({}, 'rest_framework/base.html', context=context)
+    assert re.search(r'\bcsrfToken: "TOKEN"', result.content.decode())
+
+
 def test_base_template_with_no_context():
     # base.html should be renderable with no context,
     # so it can be easily extended.
-    render({}, 'rest_framework/base.html')
+    result = render({}, 'rest_framework/base.html')
+    # note that this response will not include a valid CSRF token
+    assert re.search(r'\bcsrfToken: ""', result.content.decode())
diff --git a/tests/test_templatetags.py b/tests/test_templatetags.py
index dfbd5d9de..128160888 100644
--- a/tests/test_templatetags.py
+++ b/tests/test_templatetags.py
@@ -1,8 +1,6 @@
-# encoding: utf-8
-from __future__ import unicode_literals
-
 import unittest
 
+from django.template import Context, Template
 from django.test import TestCase
 
 from rest_framework.compat import coreapi, coreschema
@@ -224,7 +222,7 @@ class TemplateTagTests(TestCase):
         assert result == ''
 
     def test_get_pagination_html(self):
-        class MockPager(object):
+        class MockPager:
             def __init__(self):
                 self.called = False
 
@@ -304,6 +302,25 @@ class URLizerTests(TestCase):
             '&quot;foo_set&quot;: [\n    &quot;<a href="http://api/foos/1/">http://api/foos/1/</a>&quot;\n], '
         self._urlize_dict_check(data)
 
+    def test_template_render_with_autoescape(self):
+        """
+        Test that HTML is correctly escaped in Browsable API views.
+        """
+        template = Template("{% load rest_framework %}{{ content|urlize_quoted_links }}")
+        rendered = template.render(Context({'content': '<script>alert()</script> http://example.com'}))
+        assert rendered == '&lt;script&gt;alert()&lt;/script&gt;' \
+                           ' <a href="http://example.com" rel="nofollow">http://example.com</a>'
+
+    def test_template_render_with_noautoescape(self):
+        """
+        Test if the autoescape value is getting passed to urlize_quoted_links filter.
+        """
+        template = Template("{% load rest_framework %}"
+                            "{% autoescape off %}{{ content|urlize_quoted_links }}"
+                            "{% endautoescape %}")
+        rendered = template.render(Context({'content': '<b> "http://example.com" </b>'}))
+        assert rendered == '<b> "<a href="http://example.com" rel="nofollow">http://example.com</a>" </b>'
+
 
 @unittest.skipUnless(coreapi, 'coreapi is not installed')
 class SchemaLinksTests(TestCase):
@@ -320,7 +337,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['users']
         flat_links = schema_links(section)
-        assert len(flat_links) is 0
+        assert len(flat_links) == 0
 
     def test_single_action(self):
         schema = coreapi.Document(
@@ -338,7 +355,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['users']
         flat_links = schema_links(section)
-        assert len(flat_links) is 1
+        assert len(flat_links) == 1
         assert 'list' in flat_links
 
     def test_default_actions(self):
@@ -376,7 +393,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['users']
         flat_links = schema_links(section)
-        assert len(flat_links) is 4
+        assert len(flat_links) == 4
         assert 'list' in flat_links
         assert 'create' in flat_links
         assert 'read' in flat_links
@@ -424,7 +441,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['users']
         flat_links = schema_links(section)
-        assert len(flat_links) is 5
+        assert len(flat_links) == 5
         assert 'list' in flat_links
         assert 'create' in flat_links
         assert 'read' in flat_links
@@ -482,7 +499,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['users']
         flat_links = schema_links(section)
-        assert len(flat_links) is 6
+        assert len(flat_links) == 6
         assert 'list' in flat_links
         assert 'create' in flat_links
         assert 'read' in flat_links
@@ -533,7 +550,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['animals']
         flat_links = schema_links(section)
-        assert len(flat_links) is 4
+        assert len(flat_links) == 4
         assert 'cat > create' in flat_links
         assert 'cat > list' in flat_links
         assert 'dog > read' in flat_links
@@ -602,7 +619,7 @@ class SchemaLinksTests(TestCase):
         )
         section = schema['animals']
         flat_links = schema_links(section)
-        assert len(flat_links) is 4
+        assert len(flat_links) == 4
         assert 'cat > create' in flat_links
         assert 'cat > list' in flat_links
         assert 'dog > read' in flat_links
@@ -610,6 +627,6 @@ class SchemaLinksTests(TestCase):
 
         section = schema['farmers']
         flat_links = schema_links(section)
-        assert len(flat_links) is 2
+        assert len(flat_links) == 2
         assert 'silo > list' in flat_links
         assert 'silo > soy > list' in flat_links
diff --git a/tests/test_testing.py b/tests/test_testing.py
index 7868f724c..8094bfd8d 100644
--- a/tests/test_testing.py
+++ b/tests/test_testing.py
@@ -1,6 +1,3 @@
-# encoding: utf-8
-from __future__ import unicode_literals
-
 from io import BytesIO
 
 from django.conf.urls import url
@@ -293,13 +290,13 @@ class TestUrlPatternTestCase(URLPatternsTestCase):
     @classmethod
     def setUpClass(cls):
         assert urlpatterns is not cls.urlpatterns
-        super(TestUrlPatternTestCase, cls).setUpClass()
+        super().setUpClass()
         assert urlpatterns is cls.urlpatterns
 
     @classmethod
     def tearDownClass(cls):
         assert urlpatterns is cls.urlpatterns
-        super(TestUrlPatternTestCase, cls).tearDownClass()
+        super().tearDownClass()
         assert urlpatterns is not cls.urlpatterns
 
     def test_urlpatterns(self):
diff --git a/tests/test_throttling.py b/tests/test_throttling.py
index b220a33a6..b20b6a809 100644
--- a/tests/test_throttling.py
+++ b/tests/test_throttling.py
@@ -1,7 +1,6 @@
 """
 Tests for the throttling implementations in the permissions module.
 """
-from __future__ import unicode_literals
 
 import pytest
 from django.contrib.auth.models import User
@@ -296,7 +295,7 @@ class ScopedRateThrottleTests(TestCase):
             assert response.status_code == 200
 
     def test_get_cache_key_returns_correct_key_if_user_is_authenticated(self):
-        class DummyView(object):
+        class DummyView:
             throttle_scope = 'user'
 
         request = Request(HttpRequest())
diff --git a/tests/test_urlpatterns.py b/tests/test_urlpatterns.py
index 59ba395d2..25cc0032e 100644
--- a/tests/test_urlpatterns.py
+++ b/tests/test_urlpatterns.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import unittest
 from collections import namedtuple
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index a29ae2fa6..0d61cc2f9 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,6 +1,3 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
 from django.conf.urls import url
 from django.test import TestCase, override_settings
 
@@ -52,6 +49,14 @@ class ResourceViewSet(ModelViewSet):
     def detail_action(self, request, *args, **kwargs):
         raise NotImplementedError
 
+    @action(detail=True, name='Custom Name')
+    def named_action(self, request, *args, **kwargs):
+        raise NotImplementedError
+
+    @action(detail=True, suffix='Custom Suffix')
+    def suffixed_action(self, request, *args, **kwargs):
+        raise NotImplementedError
+
 
 router = SimpleRouter()
 router.register(r'resources', ResourceViewSet)
@@ -145,6 +150,24 @@ class BreadcrumbTests(TestCase):
             ('Detail action', '/resources/1/detail_action/'),
         ]
 
+    def test_modelviewset_action_name_kwarg(self):
+        url = '/resources/1/named_action/'
+        assert get_breadcrumbs(url) == [
+            ('Root', '/'),
+            ('Resource List', '/resources/'),
+            ('Resource Instance', '/resources/1/'),
+            ('Custom Name', '/resources/1/named_action/'),
+        ]
+
+    def test_modelviewset_action_suffix_kwarg(self):
+        url = '/resources/1/suffixed_action/'
+        assert get_breadcrumbs(url) == [
+            ('Root', '/'),
+            ('Resource List', '/resources/'),
+            ('Resource Instance', '/resources/1/'),
+            ('Resource Custom Suffix', '/resources/1/suffixed_action/'),
+        ]
+
 
 class JsonFloatTests(TestCase):
     """
@@ -166,7 +189,7 @@ class JsonFloatTests(TestCase):
             json.loads("NaN")
 
 
-@override_settings(STRICT_JSON=False)
+@override_settings(REST_FRAMEWORK={'STRICT_JSON': False})
 class NonStrictJsonFloatTests(JsonFloatTests):
     """
     'STRICT_JSON = False' should not somehow affect internal json behavior
diff --git a/tests/test_validation.py b/tests/test_validation.py
index 8b71693c5..6e00b48c2 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import re
 
 from django.core.validators import MaxValueValidator, RegexValidator
@@ -111,7 +109,7 @@ class TestAvoidValidation(TestCase):
         assert not serializer.is_valid()
         assert serializer.errors == {
             'non_field_errors': [
-                'Invalid data. Expected a dictionary, but got %s.' % type('').__name__
+                'Invalid data. Expected a dictionary, but got str.',
             ]
         }
 
@@ -150,14 +148,14 @@ class TestMaxValueValidatorValidation(TestCase):
 
     def test_max_value_validation_success(self):
         obj = ValidationMaxValueValidatorModel.objects.create(number_value=100)
-        request = factory.patch('/{0}'.format(obj.pk), {'number_value': 98}, format='json')
+        request = factory.patch('/{}'.format(obj.pk), {'number_value': 98}, format='json')
         view = UpdateMaxValueValidationModel().as_view()
         response = view(request, pk=obj.pk).render()
         assert response.status_code == status.HTTP_200_OK
 
     def test_max_value_validation_fail(self):
         obj = ValidationMaxValueValidatorModel.objects.create(number_value=100)
-        request = factory.patch('/{0}'.format(obj.pk), {'number_value': 101}, format='json')
+        request = factory.patch('/{}'.format(obj.pk), {'number_value': 101}, format='json')
         view = UpdateMaxValueValidationModel().as_view()
         response = view(request, pk=obj.pk).render()
         assert response.content == b'{"number_value":["Ensure this value is less than or equal to 100."]}'
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 4bbddb64b..fe31ba235 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -353,7 +353,7 @@ class TestUniquenessTogetherValidation(TestCase):
         filter_queryset should add value from existing instance attribute
         if it is not provided in attributes dict
         """
-        class MockQueryset(object):
+        class MockQueryset:
             def filter(self, **kwargs):
                 self.called_with = kwargs
 
@@ -558,19 +558,19 @@ class TestHiddenFieldUniquenessForDateValidation(TestCase):
 class ValidatorsTests(TestCase):
 
     def test_qs_exists_handles_type_error(self):
-        class TypeErrorQueryset(object):
+        class TypeErrorQueryset:
             def exists(self):
                 raise TypeError
         assert qs_exists(TypeErrorQueryset()) is False
 
     def test_qs_exists_handles_value_error(self):
-        class ValueErrorQueryset(object):
+        class ValueErrorQueryset:
             def exists(self):
                 raise ValueError
         assert qs_exists(ValueErrorQueryset()) is False
 
     def test_qs_exists_handles_data_error(self):
-        class DataErrorQueryset(object):
+        class DataErrorQueryset:
             def exists(self):
                 raise DataError
         assert qs_exists(DataErrorQueryset()) is False
diff --git a/tests/test_versioning.py b/tests/test_versioning.py
index 7e650e275..d4e269df3 100644
--- a/tests/test_versioning.py
+++ b/tests/test_versioning.py
@@ -319,9 +319,9 @@ class TestHyperlinkedRelatedField(URLPatternsTestCase, APITestCase):
     ]
 
     def setUp(self):
-        super(TestHyperlinkedRelatedField, self).setUp()
+        super().setUp()
 
-        class MockQueryset(object):
+        class MockQueryset:
             def get(self, pk):
                 return 'object %s' % pk
 
diff --git a/tests/test_views.py b/tests/test_views.py
index f0919e846..2648c9fb3 100644
--- a/tests/test_views.py
+++ b/tests/test_views.py
@@ -1,7 +1,4 @@
-from __future__ import unicode_literals
-
 import copy
-import sys
 
 from django.test import TestCase
 
@@ -14,10 +11,7 @@ from rest_framework.views import APIView
 
 factory = APIRequestFactory()
 
-if sys.version_info[:2] >= (3, 4):
-    JSON_ERROR = 'JSON parse error - Expecting value:'
-else:
-    JSON_ERROR = 'JSON parse error - No JSON object could be decoded'
+JSON_ERROR = 'JSON parse error - Expecting value:'
 
 
 class BasicView(APIView):
diff --git a/tests/test_viewsets.py b/tests/test_viewsets.py
index 54b691e22..eac36f095 100644
--- a/tests/test_viewsets.py
+++ b/tests/test_viewsets.py
@@ -63,9 +63,28 @@ class ActionViewSet(GenericViewSet):
         raise NotImplementedError
 
 
+class ActionNamesViewSet(GenericViewSet):
+
+    def retrieve(self, request, *args, **kwargs):
+        return Response()
+
+    @action(detail=True)
+    def unnamed_action(self, request, *args, **kwargs):
+        raise NotImplementedError
+
+    @action(detail=True, name='Custom Name')
+    def named_action(self, request, *args, **kwargs):
+        raise NotImplementedError
+
+    @action(detail=True, suffix='Custom Suffix')
+    def suffixed_action(self, request, *args, **kwargs):
+        raise NotImplementedError
+
+
 router = SimpleRouter()
 router.register(r'actions', ActionViewSet)
 router.register(r'actions-alt', ActionViewSet, basename='actions-alt')
+router.register(r'names', ActionNamesViewSet, basename='names')
 
 
 urlpatterns = [
@@ -172,6 +191,19 @@ class GetExtraActionUrlMapTests(TestCase):
     def test_uninitialized_view(self):
         self.assertEqual(ActionViewSet().get_extra_action_url_map(), OrderedDict())
 
+    def test_action_names(self):
+        # Action 'name' and 'suffix' kwargs should be respected
+        response = self.client.get('/api/names/1/')
+        view = response.renderer_context['view']
+
+        expected = OrderedDict([
+            ('Custom Name', 'http://testserver/api/names/1/named_action/'),
+            ('Action Names Custom Suffix', 'http://testserver/api/names/1/suffixed_action/'),
+            ('Unnamed action', 'http://testserver/api/names/1/unnamed_action/'),
+        ])
+
+        self.assertEqual(view.get_extra_action_url_map(), expected)
+
 
 @override_settings(ROOT_URLCONF='tests.test_viewsets')
 class ReverseActionTests(TestCase):
diff --git a/tests/utils.py b/tests/utils.py
index 509e6a102..06e5b9abe 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -2,7 +2,7 @@ from django.core.exceptions import ObjectDoesNotExist
 from django.urls import NoReverseMatch
 
 
-class MockObject(object):
+class MockObject:
     def __init__(self, **kwargs):
         self._kwargs = kwargs
         for key, val in kwargs.items():
@@ -16,7 +16,7 @@ class MockObject(object):
         return '<MockObject %s>' % kwargs_str
 
 
-class MockQueryset(object):
+class MockQueryset:
     def __init__(self, iterable):
         self.items = iterable
 
@@ -33,7 +33,7 @@ class MockQueryset(object):
         raise ObjectDoesNotExist()
 
 
-class BadType(object):
+class BadType:
     """
     When used as a lookup with a `MockQueryset`, these objects
     will raise a `TypeError`, as occurs in Django when making
diff --git a/tox.ini b/tox.ini
index 59aa38623..ab5e54cc3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,10 @@
 [tox]
 envlist =
-       {py27,py34,py35,py36}-django111,
-       {py34,py35,py36}-django20,
-       {py35,py36}-django21
-       {py35,py36}-djangomaster,
+       {py35,py36}-django111,
+       {py35,py36,py37}-django20,
+       {py35,py36,py37}-django21
+       {py35,py36,py37}-django22
+       {py36,py37}-djangomaster,
        base,dist,lint,docs,
 
 [travis:env]
@@ -11,6 +12,7 @@ DJANGO =
     1.11: django111
     2.0: django20
     2.1: django21
+    2.2: django22
     master: djangomaster
 
 [testenv]
@@ -23,6 +25,7 @@ deps =
         django111: Django>=1.11,<2.0
         django20: Django>=2.0,<2.1
         django21: Django>=2.1,<2.2
+        django22: Django>=2.2,<3.0
         djangomaster: https://github.com/django/django/archive/master.tar.gz
         -rrequirements/requirements-testing.txt
         -rrequirements/requirements-optionals.txt
@@ -41,7 +44,7 @@ deps =
         -rrequirements/requirements-optionals.txt
 
 [testenv:lint]
-basepython = python2.7
+basepython = python3.7
 commands = ./runtests.py --lintonly
 deps =
         -rrequirements/requirements-codestyle.txt
@@ -49,6 +52,7 @@ deps =
 
 [testenv:docs]
 basepython = python2.7
+skip_install = true
 commands = mkdocs build
 deps =
        -rrequirements/requirements-testing.txt