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gh-100458: Clarify Enum.__format__() change of mixed-in types in the whatsnew/3.11.rst #100387

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Merged
merged 7 commits into from
May 1, 2023
Merged

gh-100458: Clarify Enum.__format__() change of mixed-in types in the whatsnew/3.11.rst #100387

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e51f55c
Clarify Enum.__format__() change of mixed-in types
anze3db Dec 21, 2022
4ccc0fe
Point users to StrEnum or IntEnum for old formatting behavior
anze3db Dec 27, 2022
3311e3d
Merge branch 'main' into main
anze3db Dec 27, 2022
0d265a0
Split into multiple ines
anze3db Dec 27, 2022
5f30054
Fix small typo
anze3db Dec 27, 2022
bee67ca
Address PR feedback
anze3db Mar 22, 2023
6aed4ca
update prose
ethanfurman Apr 18, 2023
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6 changes: 4 additions & 2 deletions 6 Doc/whatsnew/3.11.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -676,10 +676,12 @@ enum
* Changed :meth:`Enum.__format__() <enum.Enum.__format__>`
(the default for :func:`format`, :meth:`str.format` and :term:`f-string`\s)
of enums with mixed-in types (e.g. :class:`int`, :class:`str`)
to also include the class name in the output, not just the member's key.
to include the class name and member key in the output, not the member's value.
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Suggested change
to include the class name and member key in the output, not the member's value.
to show the class name and member name in the output, instead of the member's value.

This matches the existing behavior of :meth:`enum.Enum.__str__`,
returning e.g. ``'AnEnum.MEMBER'`` for an enum ``AnEnum(str, Enum)``
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Suggested change
returning e.g. ``'AnEnum.MEMBER'`` for an enum ``AnEnum(str, Enum)``
returning e.g. ``'AnEnum.MEMBER'`` for an enum ``AnEnum(str, Enum)``.

instead of just ``'MEMBER'``.
instead of the member's value. Those wishing to keep the old formatting behavior
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Suggested change
instead of the member's value. Those wishing to keep the old formatting behavior
Those wishing to keep the old formatting behavior

may wish to modify their enums with mixed-in types to inherit from the appropriate
:class:`StrEnum` or :class:`IntEnum` class.

* Added a new *boundary* class parameter to :class:`~enum.Flag` enums
and the :class:`~enum.FlagBoundary` enum with its options,
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