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-rw-r--r--Lib/test/test_descr.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 2a9e329..71d8609 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -4414,6 +4414,14 @@ order (MRO) for bases """
self.assertRaises(TypeError, case, 1, 2, 3)
self.assertRaises(TypeError, case, 1, 2, foo=3)
+ def test_subclassing_does_not_duplicate_dict_descriptors(self):
+ class Base:
+ pass
+ class Sub(Base):
+ pass
+ self.assertIn("__dict__", Base.__dict__)
+ self.assertNotIn("__dict__", Sub.__dict__)
+
class DictProxyTests(unittest.TestCase):
def setUp(self):