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[3.12] gh-107576: Ensure __orig_bases__ are our own in get_original_bases (GH-107584) (#107592)

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gh-107576: Ensure `__orig_bases__` are our own in `get_original_bases` (GH-107584)
(cherry picked from commit ed4a978449)

Co-authored-by: James Hilton-Balfe <gobot1234yt@gmail.com>
Co-authored-by: Chris Bouchard <chris@upliftinglemma.net>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
This commit is contained in:
Miss Islington (bot) 2023-08-03 08:07:43 -07:00 • committed by GitHub
parent 93fcf75878
commit d2c7b25afb
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3 changed files with 20 additions and 7 deletions
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11
Lib/types.py
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@ -165,14 +165,11 @@ def get_original_bases(cls, /):
assert get_original_bases(int) == (object,)
"""
try:
return cls.__orig_bases__
return cls.__dict__.get("__orig_bases__", cls.__bases__)
except AttributeError:
try:
return cls.__bases__
except AttributeError:
raise TypeError(
f'Expected an instance of type, not {type(cls).__name__!r}'
) from None
raise TypeError(
f"Expected an instance of type, not {type(cls).__name__!r}"
) from None
class DynamicClassAttribute: