Description

serhiy-storchaka

opened on Jun 15, 2022

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Enums does not work with generic alias of builtin types, like list[int].

>>> class E(enum.Enum):
...     L = list[int]
... 
>>> E.L
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/serhiy/py/cpython/Lib/enum.py", line 1241, in __repr__
    return "<%s.%s: %s>" % (self.__class__.__name__, self._name_, v_repr(self._value_))
                                                                  ^^^^^^^^^^^^^^^^^^^^
TypeError: descriptor '__repr__' requires a 'type' object but received a 'types.GenericAlias'

All works with typing.List[int].

>>> class E(enum.Enum):
...     L = List[int]
... 
>>> E.L
<E.L: typing.List[int]>

This is a manifestation of the #89828 bug.

Activity

1. serhiy-storchaka

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   topic-typing

   on Jun 15, 2022
2. serhiy-storchaka

   changed the title [-]Enum does not work if member is an instance oftypes.GenericAlias[/-] [+]Enum does not work if member is an instance of types.GenericAlias[/+] on Jun 15, 2022
3. kumaraditya303

   assigned

   ethanfurman

   on Jun 15, 2022
4. AlexWaygood

   added

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   3.11only security fixesonly security fixes

   3.12only security fixesonly security fixes

   on Jun 15, 2022
5. serhiy-storchaka

   added a commit that references this issue on Jun 16, 2022

   pythongh-93847: Fix repr of enum of generic aliases

   0ecc18f
6. serhiy-storchaka commented on Jun 16, 2022

   

   serhiy-storchaka

   on Jun 16, 2022

   MemberAuthor

   More actions

   It is not directly caused by the #89828 bug, but both bugs have the same cause (fixed in #93754).
7. ethanfurman

   closed this as completedin #93885on Jun 16, 2022
8. ethanfurman

   added a commit that references this issue on Jun 16, 2022

   gh-93847: Fix repr of enum of generic aliases (GH-93885)

   138db8e
9. miss-islington

   added 2 commits that reference this issue on Jun 16, 2022

   pythongh-93847: Fix repr of enum of generic aliases (pythonGH-93885)

   50a73f6

   gh-93847: Fix repr of enum of generic aliases (GH-93885)

   0319052
10. serhiy-storchaka

    added a commit that references this issue on Jun 26, 2022

    Revert 30935 defer bpo45162 to 312 (#94285)

    1ffde3e

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