Miro Hrončok <m...@hroncok.cz> added the comment:
Git bisect:
c314e60388282d9829762fb6c30b12e2807caa19 is the first new commit
commit c314e60388282d9829762fb6c30b12e2807caa19
Author: Ethan Furman <et...@stoneleaf.us>
Date: Tue Jan 12 23:47:57 2021 -0800
bpo-42901: [Enum] move member creation to `__set_name__` (GH-24196)
`type.__new__` calls `__set_name__` and `__init_subclass__`, which means
that any work metaclasses do after calling `super().__new__()` will not
be available to those two methods. In particular, `Enum` classes that
want to make use of `__init_subclass__` will not see any members.
Almost all customization is therefore moved to before the
`type.__new__()` call, including changing all members to a proto member
descriptor with a `__set_name__` that will do the final conversion of a
member to be an instance of the `Enum` class.
Lib/enum.py | 297 +++++++++++++--------
Lib/inspect.py | 2 +-
Lib/test/test_enum.py | 15 +-
.../2021-01-11-17-36-59.bpo-42901.gFd-ta.rst | 3 +
4 files changed, 207 insertions(+), 110 deletions(-)
create mode 100644
Misc/NEWS.d/next/Library/2021-01-11-17-36-59.bpo-42901.gFd-ta.rst
----------
nosy: +ethan.furman
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<https://bugs.python.org/issue43162>
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