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Commitff58045

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anze3dbJosephSBoyleethanfurman
authored andcommitted
pythongh-100458: Clarify Enum.__format__() change of mixed-in types in the whatsnew/3.11.rst (pythonGH-100387)
(cherry picked from commite665563)Co-authored-by: Anže Pečar <anze@pecar.me>Co-authored-by: JosephSBoyle <48555120+JosephSBoyle@users.noreply.github.com>Co-authored-by: Ethan Furman <ethan@stoneleaf.us>
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‎Doc/whatsnew/3.11.rst‎

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@@ -668,19 +668,11 @@ enum
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for:meth:`~object.__str__` and:meth:`~object.__format__`
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(used by:func:`str`,:func:`format` and:term:`f-string`\s).
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* Changed:class:`~enum.IntEnum`,:class:`~enum.IntFlag` and:class:`~enum.StrEnum`
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to now inherit from:class:`~enum.ReprEnum`,
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so their:func:`str` output now matches:func:`format`
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(both ``str(AnIntEnum.ONE)`` and ``format(AnIntEnum.ONE)`` return ``'1'``,
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whereas before ``str(AnIntEnum.ONE)`` returned ``'AnIntEnum.ONE'``.
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* Changed:meth:`Enum.__format__() <enum.Enum.__format__>`
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(the default for:func:`format`,:meth:`str.format` and:term:`f-string`\s)
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of enums with mixed-in types (e.g.:class:`int`,:class:`str`)
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to also include the class name in the output, not just the member's key.
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This matches the existing behavior of:meth:`enum.Enum.__str__`,
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returning e.g. ``'AnEnum.MEMBER'`` for an enum ``AnEnum(str, Enum)``
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instead of just ``'MEMBER'``.
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* Changed:meth:`Enum.__format__() <enum.Enum.__format__>` (the default for
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:func:`format`,:meth:`str.format` and:term:`f-string`\s) to always produce
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the same result as:meth:`Enum.__str__()`: for enums inheriting from
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:class:`~enum.ReprEnum` it will be the member's value; for all other enums
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it will be the enum and member name (e.g. ``Color.RED``).
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* Added a new *boundary* class parameter to:class:`~enum.Flag` enums
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and the:class:`~enum.FlagBoundary` enum with its options,

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