diff --git a/daphne/cli.py b/daphne/cli.py
index 99e2454..1c51940 100755
--- a/daphne/cli.py
+++ b/daphne/cli.py
@@ -1,11 +1,11 @@
-import sys
 import argparse
 import logging
-from .server import Server
-from .endpoints import build_endpoint_description_strings
-from .access import AccessLogGenerator
-from .utils import import_by_path
+import sys
 
+from .access import AccessLogGenerator
+from .endpoints import build_endpoint_description_strings
+from .server import Server
+from .utils import import_by_path
 
 logger = logging.getLogger(__name__)
 
diff --git a/daphne/http_protocol.py b/daphne/http_protocol.py
index 7f7fa89..078cfea 100755
--- a/daphne/http_protocol.py
+++ b/daphne/http_protocol.py
@@ -1,22 +1,20 @@
-from __future__ import unicode_literals
-
 import logging
 import random
-import six
 import string
 import time
 import traceback
 
-from zope.interface import implementer
-
-from six.moves.urllib_parse import unquote, unquote_plus
+import six
 from twisted.internet.defer import ensureDeferred
 from twisted.internet.interfaces import IProtocolNegotiationFactory
 from twisted.protocols.policies import ProtocolWrapper
 from twisted.web import http
+from zope.interface import implementer
+
+from six.moves.urllib_parse import unquote, unquote_plus
 
 from .utils import parse_x_forwarded_for
-from .ws_protocol import WebSocketProtocol, WebSocketFactory
+from .ws_protocol import WebSocketFactory, WebSocketProtocol
 
 logger = logging.getLogger(__name__)
 
diff --git a/daphne/server.py b/daphne/server.py
index 23512fa..7f443c7 100755
--- a/daphne/server.py
+++ b/daphne/server.py
@@ -1,8 +1,6 @@
-from __future__ import unicode_literals
-
 # This has to be done first as Twisted is import-order-sensitive with reactors
-from twisted.internet import asyncioreactor
-asyncioreactor.install()
+from twisted.internet import asyncioreactor  # isort:skip
+asyncioreactor.install()  # isort:skip
 
 import asyncio
 import collections
@@ -12,9 +10,9 @@ import string
 import traceback
 import warnings
 
-from twisted.internet import reactor, defer
+from twisted.internet import defer, reactor
 from twisted.internet.endpoints import serverFromString
-from twisted.logger import globalLogBeginner, STDLibLogObserver
+from twisted.logger import STDLibLogObserver, globalLogBeginner
 from twisted.web import http
 
 from .http_protocol import HTTPFactory
diff --git a/daphne/test_application.py b/daphne/test_application.py
index cbd2bdb..a97ee58 100644
--- a/daphne/test_application.py
+++ b/daphne/test_application.py
@@ -1,8 +1,8 @@
-from concurrent.futures import CancelledError
 import logging
 import os
 import pickle
 import tempfile
+from concurrent.futures import CancelledError
 
 
 class TestApplication:
diff --git a/daphne/twisted/plugins/fd_endpoint.py b/daphne/twisted/plugins/fd_endpoint.py
index 096e778..ff5a4c7 100644
--- a/daphne/twisted/plugins/fd_endpoint.py
+++ b/daphne/twisted/plugins/fd_endpoint.py
@@ -1,9 +1,9 @@
+import socket
+
+from twisted.internet import endpoints
+from twisted.internet.interfaces import IStreamServerEndpointStringParser
 from twisted.plugin import IPlugin
 from zope.interface import implementer
-from twisted.internet.interfaces import IStreamServerEndpointStringParser
-from twisted.internet import endpoints
-
-import socket
 
 
 @implementer(IPlugin, IStreamServerEndpointStringParser)
@@ -21,4 +21,4 @@ class _FDParser(object):
         return self._parseServer(reactor, *args, **kwargs)
 
 
-parser = _FDParser()
\ No newline at end of file
+parser = _FDParser()
diff --git a/daphne/utils.py b/daphne/utils.py
index 7f0332b..450416e 100644
--- a/daphne/utils.py
+++ b/daphne/utils.py
@@ -1,5 +1,6 @@
-import sys
 import importlib
+import sys
+
 from twisted.web.http_headers import Headers
 
 
diff --git a/daphne/ws_protocol.py b/daphne/ws_protocol.py
index 36b38aa..1de218c 100755
--- a/daphne/ws_protocol.py
+++ b/daphne/ws_protocol.py
@@ -1,13 +1,12 @@
-from __future__ import unicode_literals
-
 import logging
-import six
 import time
 import traceback
-from six.moves.urllib_parse import unquote, urlencode
+
+import six
+from autobahn.twisted.websocket import ConnectionDeny, WebSocketServerFactory, WebSocketServerProtocol
 from twisted.internet import defer
 
-from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory, ConnectionDeny
+from six.moves.urllib_parse import unquote, urlencode
 
 from .utils import parse_x_forwarded_for
 
diff --git a/setup.cfg b/setup.cfg
index d0ede1c..34d6b8a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,3 +3,12 @@ universal=1
 
 [tool:pytest]
 addopts = tests/
+
+[isort]
+line_length = 120
+multi_line_output = 3
+
+[flake8]
+exclude = venv/*,tox/*,docs/*,testproject/*,js_client/*
+ignore = E123,E128,E402,W503,E731,W601
+max-line-length = 120
diff --git a/tests/http_base.py b/tests/http_base.py
index 74be5eb..4d21b9e 100644
--- a/tests/http_base.py
+++ b/tests/http_base.py
@@ -1,10 +1,10 @@
-from http.client import HTTPConnection
-from urllib import parse
 import socket
 import struct
 import subprocess
 import time
 import unittest
+from http.client import HTTPConnection
+from urllib import parse
 
 from daphne.test_application import TestApplication
 
diff --git a/tests/http_strategies.py b/tests/http_strategies.py
index e4b3d9c..4789c05 100644
--- a/tests/http_strategies.py
+++ b/tests/http_strategies.py
@@ -1,12 +1,9 @@
-"""
-Assorted Hypothesis strategies useful for generating HTTP requests and responses
-"""
-from __future__ import unicode_literals
-from six.moves.urllib import parse
 import string
 
 from hypothesis import strategies
 
+from six.moves.urllib import parse
+
 HTTP_METHODS = ["OPTIONS", "GET", "HEAD", "POST", "PUT", "DELETE", "TRACE", "CONNECT"]
 
 # Unicode characters of the "Letter" category
diff --git a/tests/test_http_request.py b/tests/test_http_request.py
index 6768e9e..924519c 100644
--- a/tests/test_http_request.py
+++ b/tests/test_http_request.py
@@ -3,7 +3,7 @@
 import collections
 from urllib import parse
 
-from hypothesis import given, assume, settings
+from hypothesis import assume, given, settings
 
 import http_strategies
 from http_base import DaphneTestCase
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 5f0b364..786b8c9 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,8 +1,9 @@
 # coding: utf8
 
-from twisted.web.http_headers import Headers
 from unittest import TestCase
 
+from twisted.web.http_headers import Headers
+
 from daphne.utils import parse_x_forwarded_for