diff --git a/tests/test_atomic_requests.py b/tests/test_atomic_requests.py
index 3e1d41725..8342ad3af 100644
--- a/tests/test_atomic_requests.py
+++ b/tests/test_atomic_requests.py
@@ -7,13 +7,13 @@ from django.db import connection, connections, transaction
 from django.http import Http404
 from django.test import TestCase, TransactionTestCase
 from django.utils.decorators import method_decorator
-from tests.models import BasicModel
 
 from rest_framework import status
 from rest_framework.exceptions import APIException
 from rest_framework.response import Response
 from rest_framework.test import APIRequestFactory
 from rest_framework.views import APIView
+from tests.models import BasicModel
 
 factory = APIRequestFactory()
 
diff --git a/tests/test_generics.py b/tests/test_generics.py
index 4398febc3..000adffa7 100644
--- a/tests/test_generics.py
+++ b/tests/test_generics.py
@@ -6,13 +6,13 @@ from django.db import models
 from django.shortcuts import get_object_or_404
 from django.test import TestCase
 from django.utils import six
-from tests.models import (
-    BasicModel, ForeignKeySource, ForeignKeyTarget, RESTFrameworkModel
-)
 
 from rest_framework import generics, renderers, serializers, status
 from rest_framework.response import Response
 from rest_framework.test import APIRequestFactory
+from tests.models import (
+    BasicModel, ForeignKeySource, ForeignKeyTarget, RESTFrameworkModel
+)
 
 factory = APIRequestFactory()
 
diff --git a/tests/test_multitable_inheritance.py b/tests/test_multitable_inheritance.py
index 5867f1966..340d4966a 100644
--- a/tests/test_multitable_inheritance.py
+++ b/tests/test_multitable_inheritance.py
@@ -2,9 +2,9 @@ from __future__ import unicode_literals
 
 from django.db import models
 from django.test import TestCase
-from tests.models import RESTFrameworkModel
 
 from rest_framework import serializers
+from tests.models import RESTFrameworkModel
 
 
 # Models
diff --git a/tests/test_permissions.py b/tests/test_permissions.py
index f36b8f4da..e04c72ec9 100644
--- a/tests/test_permissions.py
+++ b/tests/test_permissions.py
@@ -7,7 +7,6 @@ from django.contrib.auth.models import Group, Permission, User
 from django.core.urlresolvers import ResolverMatch
 from django.db import models
 from django.test import TestCase
-from tests.models import BasicModel
 
 from rest_framework import (
     HTTP_HEADER_ENCODING, authentication, generics, permissions, serializers,
@@ -17,6 +16,7 @@ from rest_framework.compat import guardian
 from rest_framework.filters import DjangoObjectPermissionsFilter
 from rest_framework.routers import DefaultRouter
 from rest_framework.test import APIRequestFactory
+from tests.models import BasicModel
 
 factory = APIRequestFactory()
 
diff --git a/tests/test_relations_hyperlink.py b/tests/test_relations_hyperlink.py
index b203884d8..c0642eda2 100644
--- a/tests/test_relations_hyperlink.py
+++ b/tests/test_relations_hyperlink.py
@@ -2,14 +2,14 @@ from __future__ import unicode_literals
 
 from django.conf.urls import url
 from django.test import TestCase
+
+from rest_framework import serializers
+from rest_framework.test import APIRequestFactory
 from tests.models import (
     ForeignKeySource, ForeignKeyTarget, ManyToManySource, ManyToManyTarget,
     NullableForeignKeySource, NullableOneToOneSource, OneToOneTarget
 )
 
-from rest_framework import serializers
-from rest_framework.test import APIRequestFactory
-
 factory = APIRequestFactory()
 request = factory.get('/')  # Just to ensure we have a request in the serializer context
 
diff --git a/tests/test_relations_pk.py b/tests/test_relations_pk.py
index fb797e993..169f7d9c5 100644
--- a/tests/test_relations_pk.py
+++ b/tests/test_relations_pk.py
@@ -2,13 +2,13 @@ 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, OneToOneTarget
 )
 
-from rest_framework import serializers
-
 
 # ManyToMany
 class ManyToManyTargetSerializer(serializers.ModelSerializer):
diff --git a/tests/test_response.py b/tests/test_response.py
index 595227bd7..df2d7b4ec 100644
--- a/tests/test_response.py
+++ b/tests/test_response.py
@@ -3,7 +3,6 @@ from __future__ import unicode_literals
 from django.conf.urls import include, url
 from django.test import TestCase
 from django.utils import six
-from tests.models import BasicModel
 
 from rest_framework import generics, routers, serializers, status, viewsets
 from rest_framework.parsers import JSONParser
@@ -12,6 +11,7 @@ from rest_framework.renderers import (
 )
 from rest_framework.response import Response
 from rest_framework.views import APIView
+from tests.models import BasicModel
 
 
 # Serializer used to test BasicModel
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 5d3cdad7e..fdc61a4aa 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -4,12 +4,12 @@ from django.conf.urls import url
 from django.core.exceptions import ImproperlyConfigured
 from django.test import TestCase
 from django.utils import six
-from tests.models import BasicModel
 
 import rest_framework.utils.model_meta
 from rest_framework.utils.breadcrumbs import get_breadcrumbs
 from rest_framework.utils.model_meta import _resolve_model
 from rest_framework.views import APIView
+from tests.models import BasicModel
 
 
 class Root(APIView):