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bpo-43901: Lazy-create an empty annotations dict in all unannotated user classes and modules (#25623)

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Change class and module objects to lazy-create empty annotations dicts on demand.  The annotations dicts are stored in the object's `__dict__` for backwards compatibility.
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larryhastings 2021-04-29 20:09:08 -07:00 • committed by GitHub
parent dbe60ee09d
commit 2f2b69855d
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9 changed files with 308 additions and 8 deletions
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Lib/test/test_grammar.py
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@ -382,8 +382,7 @@ class GrammarTests(unittest.TestCase):
self.assertEqual(CC.__annotations__['xx'], 'ANNOT')
def test_var_annot_module_semantics(self):
with self.assertRaises(AttributeError):
print(test.__annotations__)
self.assertEqual(test.__annotations__, {})
self.assertEqual(ann_module.__annotations__,
{1: 2, 'x': int, 'y': str, 'f': typing.Tuple[int, int]})
self.assertEqual(ann_module.M.__annotations__,