3.11.1: NamedTuple as Enum member converts it to an ordinary tuple.

[justmars]

Bug report

When using a NamedTuple as an Enum member, it converts the NamedTuple to an ordinary tuple, preventing the use of named attributes.

Consider the following base example that will be used to highlight the difference of the code under 3.11.0 and 3.11.1:

from typing import NamedTuple
from enum import Enum

class Desc(NamedTuple): # sample named tuple
    label: str
    num: int

class Publisher(Enum): # same enum
    A = Desc(label='bob', num=1)
    B = Desc(label='jane', num=2)

In 3.11.0, this works fine:

>>> Publisher.A.value.label
'bob'

In 3.11.1, the following error occurs:

>>> Publisher.A.value.label
AttributeError                            Traceback (most recent call last)
Cell In[2], line 1
----> 1 Publishers.A.value.label

AttributeError: 'tuple' object has no attribute 'label'

Interestingly, the named tuple works fine by itself:

>>> summer = Desc(label='summer', num=3)
>>> summer.num
3

Your environment

• CPython versions tested on: 3.11.0, 3.11.1
• Operating system and architecture: M1

[AlexWaygood]

Duplicate of #100098

[AlexWaygood]

It'll be fixed in 3.11.2 (cc. @ethanfurman)

[ethanfurman]

Check the duplicate for possible work-arounds.