diff --git a/django/contrib/gis/db/backends/mysql/base.py b/django/contrib/gis/db/backends/mysql/base.py
index 9cf61e40d2..fccea5919d 100644
--- a/django/contrib/gis/db/backends/mysql/base.py
+++ b/django/contrib/gis/db/backends/mysql/base.py
@@ -1,5 +1,6 @@
-from django.db.backends.mysql.base import \
-    DatabaseWrapper as MySQLDatabaseWrapper
+from django.db.backends.mysql.base import (
+    DatabaseWrapper as MySQLDatabaseWrapper,
+)
 
 from .features import DatabaseFeatures
 from .introspection import MySQLIntrospection
diff --git a/django/contrib/gis/db/backends/mysql/features.py b/django/contrib/gis/db/backends/mysql/features.py
index 05affeecb7..9d4f8982d5 100644
--- a/django/contrib/gis/db/backends/mysql/features.py
+++ b/django/contrib/gis/db/backends/mysql/features.py
@@ -1,6 +1,7 @@
 from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
-from django.db.backends.mysql.features import \
-    DatabaseFeatures as MySQLDatabaseFeatures
+from django.db.backends.mysql.features import (
+    DatabaseFeatures as MySQLDatabaseFeatures,
+)
 
 
 class DatabaseFeatures(BaseSpatialFeatures, MySQLDatabaseFeatures):
diff --git a/django/contrib/gis/db/backends/mysql/operations.py b/django/contrib/gis/db/backends/mysql/operations.py
index 7d8adbf158..a86370121d 100644
--- a/django/contrib/gis/db/backends/mysql/operations.py
+++ b/django/contrib/gis/db/backends/mysql/operations.py
@@ -1,6 +1,7 @@
 from django.contrib.gis.db.backends.base.adapter import WKTAdapter
-from django.contrib.gis.db.backends.base.operations import \
-    BaseSpatialOperations
+from django.contrib.gis.db.backends.base.operations import (
+    BaseSpatialOperations,
+)
 from django.contrib.gis.db.backends.utils import SpatialOperator
 from django.contrib.gis.db.models import GeometryField, aggregates
 from django.db.backends.mysql.operations import DatabaseOperations
diff --git a/django/contrib/gis/db/backends/oracle/base.py b/django/contrib/gis/db/backends/oracle/base.py
index a4f6684f6d..0093ef83bb 100644
--- a/django/contrib/gis/db/backends/oracle/base.py
+++ b/django/contrib/gis/db/backends/oracle/base.py
@@ -1,5 +1,6 @@
-from django.db.backends.oracle.base import \
-    DatabaseWrapper as OracleDatabaseWrapper
+from django.db.backends.oracle.base import (
+    DatabaseWrapper as OracleDatabaseWrapper,
+)
 
 from .features import DatabaseFeatures
 from .introspection import OracleIntrospection
diff --git a/django/contrib/gis/db/backends/oracle/features.py b/django/contrib/gis/db/backends/oracle/features.py
index 996fe8e54b..ece45b2623 100644
--- a/django/contrib/gis/db/backends/oracle/features.py
+++ b/django/contrib/gis/db/backends/oracle/features.py
@@ -1,6 +1,7 @@
 from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
-from django.db.backends.oracle.features import \
-    DatabaseFeatures as OracleDatabaseFeatures
+from django.db.backends.oracle.features import (
+    DatabaseFeatures as OracleDatabaseFeatures,
+)
 
 
 class DatabaseFeatures(BaseSpatialFeatures, OracleDatabaseFeatures):
diff --git a/django/contrib/gis/db/backends/oracle/operations.py b/django/contrib/gis/db/backends/oracle/operations.py
index 013ffa74f6..758581a1aa 100644
--- a/django/contrib/gis/db/backends/oracle/operations.py
+++ b/django/contrib/gis/db/backends/oracle/operations.py
@@ -9,8 +9,9 @@
 """
 import re
 
-from django.contrib.gis.db.backends.base.operations import \
-    BaseSpatialOperations
+from django.contrib.gis.db.backends.base.operations import (
+    BaseSpatialOperations,
+)
 from django.contrib.gis.db.backends.oracle.adapter import OracleSpatialAdapter
 from django.contrib.gis.db.backends.utils import SpatialOperator
 from django.contrib.gis.db.models import aggregates
diff --git a/django/contrib/gis/db/backends/postgis/base.py b/django/contrib/gis/db/backends/postgis/base.py
index 203e3ba075..afcf864680 100644
--- a/django/contrib/gis/db/backends/postgis/base.py
+++ b/django/contrib/gis/db/backends/postgis/base.py
@@ -1,6 +1,7 @@
 from django.db.backends.base.base import NO_DB_ALIAS
-from django.db.backends.postgresql.base import \
-    DatabaseWrapper as Psycopg2DatabaseWrapper
+from django.db.backends.postgresql.base import (
+    DatabaseWrapper as Psycopg2DatabaseWrapper,
+)
 
 from .features import DatabaseFeatures
 from .introspection import PostGISIntrospection
diff --git a/django/contrib/gis/db/backends/postgis/features.py b/django/contrib/gis/db/backends/postgis/features.py
index 2d613efe6e..60158ca5c3 100644
--- a/django/contrib/gis/db/backends/postgis/features.py
+++ b/django/contrib/gis/db/backends/postgis/features.py
@@ -1,6 +1,7 @@
 from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
-from django.db.backends.postgresql.features import \
-    DatabaseFeatures as Psycopg2DatabaseFeatures
+from django.db.backends.postgresql.features import (
+    DatabaseFeatures as Psycopg2DatabaseFeatures,
+)
 
 
 class DatabaseFeatures(BaseSpatialFeatures, Psycopg2DatabaseFeatures):
diff --git a/django/contrib/gis/db/backends/postgis/operations.py b/django/contrib/gis/db/backends/postgis/operations.py
index ae0821694a..5cc9039768 100644
--- a/django/contrib/gis/db/backends/postgis/operations.py
+++ b/django/contrib/gis/db/backends/postgis/operations.py
@@ -1,8 +1,9 @@
 import re
 
 from django.conf import settings
-from django.contrib.gis.db.backends.base.operations import \
-    BaseSpatialOperations
+from django.contrib.gis.db.backends.base.operations import (
+    BaseSpatialOperations,
+)
 from django.contrib.gis.db.backends.utils import SpatialOperator
 from django.contrib.gis.gdal import GDALRaster
 from django.contrib.gis.measure import Distance
diff --git a/django/contrib/gis/db/backends/spatialite/features.py b/django/contrib/gis/db/backends/spatialite/features.py
index 79517e8190..8a08b7fef1 100644
--- a/django/contrib/gis/db/backends/spatialite/features.py
+++ b/django/contrib/gis/db/backends/spatialite/features.py
@@ -1,6 +1,7 @@
 from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
-from django.db.backends.sqlite3.features import \
-    DatabaseFeatures as SQLiteDatabaseFeatures
+from django.db.backends.sqlite3.features import (
+    DatabaseFeatures as SQLiteDatabaseFeatures,
+)
 from django.utils.functional import cached_property
 
 
diff --git a/django/contrib/gis/db/backends/spatialite/operations.py b/django/contrib/gis/db/backends/spatialite/operations.py
index 909355b031..31cf624287 100644
--- a/django/contrib/gis/db/backends/spatialite/operations.py
+++ b/django/contrib/gis/db/backends/spatialite/operations.py
@@ -6,8 +6,9 @@ https://www.gaia-gis.it/gaia-sins/spatialite-sql-4.2.1.html
 import re
 import sys
 
-from django.contrib.gis.db.backends.base.operations import \
-    BaseSpatialOperations
+from django.contrib.gis.db.backends.base.operations import (
+    BaseSpatialOperations,
+)
 from django.contrib.gis.db.backends.spatialite.adapter import SpatiaLiteAdapter
 from django.contrib.gis.db.backends.utils import SpatialOperator
 from django.contrib.gis.db.models import aggregates
diff --git a/django/contrib/gis/geoip/prototypes.py b/django/contrib/gis/geoip/prototypes.py
index 74b9b2142f..ed46aebcb9 100644
--- a/django/contrib/gis/geoip/prototypes.py
+++ b/django/contrib/gis/geoip/prototypes.py
@@ -4,7 +4,6 @@ from django.contrib.gis.geoip.libgeoip import free, lgeoip
 
 
 # #### GeoIP C Structure definitions ####
-
 class GeoIPRecord(Structure):
     _fields_ = [('country_code', c_char_p),
                 ('country_code3', c_char_p),
diff --git a/django/contrib/gis/management/commands/inspectdb.py b/django/contrib/gis/management/commands/inspectdb.py
index 27345c59d4..5275175d66 100644
--- a/django/contrib/gis/management/commands/inspectdb.py
+++ b/django/contrib/gis/management/commands/inspectdb.py
@@ -1,5 +1,6 @@
-from django.core.management.commands.inspectdb import \
-    Command as InspectDBCommand
+from django.core.management.commands.inspectdb import (
+    Command as InspectDBCommand,
+)
 
 
 class Command(InspectDBCommand):
diff --git a/django/contrib/staticfiles/management/commands/runserver.py b/django/contrib/staticfiles/management/commands/runserver.py
index c25ac1f369..455d926b3e 100644
--- a/django/contrib/staticfiles/management/commands/runserver.py
+++ b/django/contrib/staticfiles/management/commands/runserver.py
@@ -1,7 +1,8 @@
 from django.conf import settings
 from django.contrib.staticfiles.handlers import StaticFilesHandler
-from django.core.management.commands.runserver import \
-    Command as RunserverCommand
+from django.core.management.commands.runserver import (
+    Command as RunserverCommand,
+)
 
 
 class Command(RunserverCommand):
diff --git a/django/core/mail/backends/filebased.py b/django/core/mail/backends/filebased.py
index cfe033fb48..17e89b75a4 100644
--- a/django/core/mail/backends/filebased.py
+++ b/django/core/mail/backends/filebased.py
@@ -5,8 +5,9 @@ import os
 
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
-from django.core.mail.backends.console import \
-    EmailBackend as ConsoleEmailBackend
+from django.core.mail.backends.console import (
+    EmailBackend as ConsoleEmailBackend,
+)
 from django.utils import six
 
 
diff --git a/tests/base/models.py b/tests/base/models.py
index 4a8a2ffd81..7a6b114516 100644
--- a/tests/base/models.py
+++ b/tests/base/models.py
@@ -3,7 +3,6 @@ from __future__ import unicode_literals
 from django.db import models
 from django.utils import six
 
-
 # The models definitions below used to crash. Generating models dynamically
 # at runtime is a bad idea because it pollutes the app registry. This doesn't
 # integrate well with the test suite but at least it prevents regressions.
diff --git a/tests/check_framework/tests_1_10_compatibility.py b/tests/check_framework/tests_1_10_compatibility.py
index 388ac1b024..e085f68881 100644
--- a/tests/check_framework/tests_1_10_compatibility.py
+++ b/tests/check_framework/tests_1_10_compatibility.py
@@ -1,5 +1,6 @@
-from django.core.checks.compatibility.django_1_10 import \
-    check_duplicate_middleware_settings
+from django.core.checks.compatibility.django_1_10 import (
+    check_duplicate_middleware_settings,
+)
 from django.test import SimpleTestCase
 from django.test.utils import override_settings
 
diff --git a/tests/check_framework/tests_1_8_compatibility.py b/tests/check_framework/tests_1_8_compatibility.py
index d8601b1064..c3865643b2 100644
--- a/tests/check_framework/tests_1_8_compatibility.py
+++ b/tests/check_framework/tests_1_8_compatibility.py
@@ -1,5 +1,6 @@
-from django.core.checks.compatibility.django_1_8_0 import \
-    check_duplicate_template_settings
+from django.core.checks.compatibility.django_1_8_0 import (
+    check_duplicate_template_settings,
+)
 from django.test import SimpleTestCase
 from django.test.utils import override_settings
 
diff --git a/tests/foreign_object/tests.py b/tests/foreign_object/tests.py
index 3c1f5bdfb4..e74732ab72 100644
--- a/tests/foreign_object/tests.py
+++ b/tests/foreign_object/tests.py
@@ -13,7 +13,6 @@ from .models import (
     Group, Membership, NewsArticle, Person,
 )
 
-
 # Note that these tests are testing internal implementation details.
 # ForeignObject is not part of public API.
 
diff --git a/tests/i18n/test_compilation.py b/tests/i18n/test_compilation.py
index b33338800a..85d3b7939a 100644
--- a/tests/i18n/test_compilation.py
+++ b/tests/i18n/test_compilation.py
@@ -10,8 +10,9 @@ from subprocess import Popen
 from django.core.management import (
     CommandError, call_command, execute_from_command_line,
 )
-from django.core.management.commands.makemessages import \
-    Command as MakeMessagesCommand
+from django.core.management.commands.makemessages import (
+    Command as MakeMessagesCommand,
+)
 from django.core.management.utils import find_command
 from django.test import SimpleTestCase, mock, override_settings
 from django.test.utils import captured_stderr, captured_stdout
diff --git a/tests/i18n/test_extraction.py b/tests/i18n/test_extraction.py
index 9311a1e7f0..3befcb7c8a 100644
--- a/tests/i18n/test_extraction.py
+++ b/tests/i18n/test_extraction.py
@@ -14,8 +14,9 @@ from admin_scripts.tests import AdminScriptTestCase
 from django.core import management
 from django.core.management import execute_from_command_line
 from django.core.management.base import CommandError
-from django.core.management.commands.makemessages import \
-    Command as MakeMessagesCommand
+from django.core.management.commands.makemessages import (
+    Command as MakeMessagesCommand,
+)
 from django.core.management.utils import find_command
 from django.test import SimpleTestCase, mock, override_settings
 from django.test.utils import captured_stderr, captured_stdout
diff --git a/tests/model_inheritance/models.py b/tests/model_inheritance/models.py
index 45f22df0bc..659f0c5b22 100644
--- a/tests/model_inheritance/models.py
+++ b/tests/model_inheritance/models.py
@@ -16,7 +16,6 @@ from __future__ import unicode_literals
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 
-
 #
 # Abstract base classes
 #
diff --git a/tests/model_options/models/tablespaces.py b/tests/model_options/models/tablespaces.py
index ec705b7b2d..0ee0e20ef4 100644
--- a/tests/model_options/models/tablespaces.py
+++ b/tests/model_options/models/tablespaces.py
@@ -1,6 +1,5 @@
 from django.db import models
 
-
 # Since the test database doesn't have tablespaces, it's impossible for Django
 # to create the tables for models where db_tablespace is set. To avoid this
 # problem, we mark the models as unmanaged, and temporarily revert them to
diff --git a/tests/prefetch_related/models.py b/tests/prefetch_related/models.py
index 6600418b8f..c5f895fe96 100644
--- a/tests/prefetch_related/models.py
+++ b/tests/prefetch_related/models.py
@@ -10,8 +10,6 @@ from django.utils.encoding import python_2_unicode_compatible
 from django.utils.functional import cached_property
 
 
-# Basic tests
-
 @python_2_unicode_compatible
 class Author(models.Model):
     name = models.CharField(max_length=50, unique=True)
diff --git a/tests/proxy_models/models.py b/tests/proxy_models/models.py
index 6960042d78..8b081f5290 100644
--- a/tests/proxy_models/models.py
+++ b/tests/proxy_models/models.py
@@ -7,7 +7,6 @@ providing a modified interface to the data from the base class.
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 
-
 # A couple of managers for testing managing overriding in proxy model cases.
 
 
diff --git a/tests/select_related/models.py b/tests/select_related/models.py
index bef2873731..26bf34ebd1 100644
--- a/tests/select_related/models.py
+++ b/tests/select_related/models.py
@@ -14,7 +14,6 @@ from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 
-
 # Who remembers high school biology?
 
 
diff --git a/tests/serializers/test_data.py b/tests/serializers/test_data.py
index f9cb9582fe..cc42f2869a 100644
--- a/tests/serializers/test_data.py
+++ b/tests/serializers/test_data.py
@@ -32,7 +32,6 @@ from .models import (
 )
 from .tests import register_tests
 
-
 # A set of functions that can be used to recreate
 # test data objects of various kinds.
 # The save method is a raw base model save, to make
diff --git a/tests/sessions_tests/tests.py b/tests/sessions_tests/tests.py
index 5ccccf699b..c15c39224b 100644
--- a/tests/sessions_tests/tests.py
+++ b/tests/sessions_tests/tests.py
@@ -10,12 +10,14 @@ from datetime import timedelta
 from django.conf import settings
 from django.contrib.sessions.backends.base import UpdateError
 from django.contrib.sessions.backends.cache import SessionStore as CacheSession
-from django.contrib.sessions.backends.cached_db import \
-    SessionStore as CacheDBSession
+from django.contrib.sessions.backends.cached_db import (
+    SessionStore as CacheDBSession,
+)
 from django.contrib.sessions.backends.db import SessionStore as DatabaseSession
 from django.contrib.sessions.backends.file import SessionStore as FileSession
-from django.contrib.sessions.backends.signed_cookies import \
-    SessionStore as CookieSession
+from django.contrib.sessions.backends.signed_cookies import (
+    SessionStore as CookieSession,
+)
 from django.contrib.sessions.exceptions import InvalidSessionKey
 from django.contrib.sessions.middleware import SessionMiddleware
 from django.contrib.sessions.models import Session
diff --git a/tests/staticfiles_tests/test_storage.py b/tests/staticfiles_tests/test_storage.py
index e06e54487e..d0dcafc123 100644
--- a/tests/staticfiles_tests/test_storage.py
+++ b/tests/staticfiles_tests/test_storage.py
@@ -8,8 +8,9 @@ import unittest
 
 from django.conf import settings
 from django.contrib.staticfiles import finders, storage
-from django.contrib.staticfiles.management.commands.collectstatic import \
-    Command as CollectstaticCommand
+from django.contrib.staticfiles.management.commands.collectstatic import (
+    Command as CollectstaticCommand,
+)
 from django.core.cache.backends.base import BaseCache
 from django.core.management import call_command
 from django.test import override_settings
diff --git a/tests/unmanaged_models/models.py b/tests/unmanaged_models/models.py
index e925752a06..657d3d5be0 100644
--- a/tests/unmanaged_models/models.py
+++ b/tests/unmanaged_models/models.py
@@ -6,7 +6,6 @@ is generated for the table on various manage.py operations.
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 
-
 #  All of these models are created in the database by Django.