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gh-102069: Fix __weakref__ descriptor generation for custom dataclasses (#102075)

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Nikita Sobolev 2023-03-14 00:42:05 +03:00 • committed by GitHub
parent 71e37d9079
commit d97757f793
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3 changed files with 15 additions and 4 deletions
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Lib/dataclasses.py
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@ -1189,6 +1189,9 @@ def _add_slots(cls, is_frozen, weakref_slot):
# Remove __dict__ itself.
cls_dict.pop('__dict__', None)
# Clear existing `__weakref__` descriptor, it belongs to a previous type:
cls_dict.pop('__weakref__', None) # gh-102069
# And finally create the class.
qualname = getattr(cls, '__qualname__', None)
cls = type(cls)(cls.__name__, cls.__bases__, cls_dict)