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-rw-r--r--Lib/test/test_importlib/extension/test_loader.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/test/test_importlib/extension/test_loader.py b/Lib/test/test_importlib/extension/test_loader.py
index d82c805..24e0330 100644
--- a/Lib/test/test_importlib/extension/test_loader.py
+++ b/Lib/test/test_importlib/extension/test_loader.py
@@ -183,7 +183,7 @@ class MultiPhaseExtensionModuleTests(abc.LoaderTests):
self.assertIsInstance(module, types.ModuleType)
self.assertEqual(module.__name__, 'x')
self.assertEqual(module.str_const, 'something different')
- assert 'x' not in sys.modules
+ self.assertNotIn('x', sys.modules)
def test_load_twice(self):
'''Test that 2 loads result in 2 module objects'''