Fixed flake8 warnings introduced in recent commits.

django/db/backends/postgresql_psycopg2/base.py

@@ -4,8 +4,6 @@ PostgreSQL database backend for Django.
 Requires psycopg 2: http://initd.org/projects/psycopg2
 """
 
-import sys
-
 from django.conf import settings
 from django.db.backends import (BaseDatabaseFeatures, BaseDatabaseWrapper,
     BaseDatabaseValidation)

tests/get_or_create/tests.py

@@ -19,40 +19,38 @@ class GetOrCreateTests(TestCase):
         )
 
     def test_get_or_create_method_with_get(self):
-        p, created = Person.objects.get_or_create(
+        created = Person.objects.get_or_create(
             first_name="John", last_name="Lennon", defaults={
                 "birthday": date(1940, 10, 9)
             }
-        )
+        )[1]
         self.assertFalse(created)
         self.assertEqual(Person.objects.count(), 1)
 
-
     def test_get_or_create_method_with_create(self):
-        p, created = Person.objects.get_or_create(
+        created = Person.objects.get_or_create(
             first_name='George', last_name='Harrison', defaults={
                 'birthday': date(1943, 2, 25)
             }
-        )
+        )[1]
         self.assertTrue(created)
         self.assertEqual(Person.objects.count(), 2)
 
-
     def test_get_or_create_redundant_instance(self):
         """
         If we execute the exact same statement twice, the second time,
         it won't create a Person.
         """
-        george, created = Person.objects.get_or_create(
+        Person.objects.get_or_create(
             first_name='George', last_name='Harrison', defaults={
                 'birthday': date(1943, 2, 25)
             }
         )
-        evil_george, created = Person.objects.get_or_create(
+        created = Person.objects.get_or_create(
             first_name='George', last_name='Harrison', defaults={
                 'birthday': date(1943, 2, 25)
             }
-        )
+        )[1]
 
         self.assertFalse(created)
         self.assertEqual(Person.objects.count(), 2)
@@ -67,6 +65,7 @@ class GetOrCreateTests(TestCase):
             Person.objects.get_or_create, first_name="Tom", last_name="Smith"
         )
 
+
 class GetOrCreateTestsWithManualPKs(TestCase):
 
     def setUp(self):

tests/test_discovery_sample/doctests.py

@@ -3,6 +3,7 @@ Doctest example from the official Python documentation.
 https://docs.python.org/3/library/doctest.html
 """
 
+
 def factorial(n):
     """Return the factorial of n, an exact integer >= 0.
 

tests/test_runner/test_discover_runner.py

@@ -105,7 +105,6 @@ class DiscoverRunnerTest(TestCase):
 
     def test_testcase_ordering(self):
         suite = DiscoverRunner().build_suite(["test_discovery_sample/"])
-        tc_names = [case.__class__.__name__ for case in suite._tests]
         self.assertEqual(
             suite._tests[0].__class__.__name__,
             'TestDjangoTestCase',