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[3.9] bpo-41789: honor object overrides in Enum classes (GH-22250) (GH-22272)

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EnumMeta double-checks that `__repr__`, `__str__`, `__format__`, and `__reduce_ex__` are not the same as `object`'s, and replaces them if they are -- even if that replacement was intentionally done in the Enum being constructed.  This patch fixes that.
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Ethan Furman 2020-09-16 03:58:33 -07:00 • committed by GitHub
parent 95b81e2f8c
commit a4677068dd
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3 changed files with 14 additions and 1 deletions
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Lib/enum.py
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@ -249,7 +249,11 @@ class EnumMeta(type):
# double check that repr and friends are not the mixin's or various
# things break (such as pickle)
# however, if the method is defined in the Enum itself, don't replace
# it
for name in ('__repr__', '__str__', '__format__', '__reduce_ex__'):
if name in classdict:
continue
class_method = getattr(enum_class, name)
obj_method = getattr(member_type, name, None)
enum_method = getattr(first_enum, name, None)