Update enum.EnumType.__contains__ for Python 3.12

[InSyncWithFoo]

Documentation

The doc currently says:

class enum.EnumType
[...]

__contains__(cls, member)
Returns True if member belongs to the cls:

>>> some_var = Color.RED

>>> some_var in Color

True

Note: In Python 3.12 it will be possible to check for member values and not just members; until then, a TypeError will be raised if a non-Enum-member is used in a containment check.

Python 3.12 has already been released, so this note block should be replaced with a Changed in version 3.12 note:

Changed in version 3.12: Before Python 3.12, a TypeError is raised if a non-Enum-member is used in a containment check.

Linked PRs

• GH-111182: Update enum.EnumType.__contains__ #111183
• GH-111182: Update enum.EnumType.__contains__ #111184