C:\Users\alexw\coding\cpython>python
Running Debug|x64 interpreter...
Python 3.12.0a0 (main, May 17 2022, 16:54:26) [MSC v.1931 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from enum import *
>>> class Foo(Flag):
...     X = 1
...     Y = 2
...     Z = X | Y
...
>>> len(Foo.X)
1
>>> len(Foo.Z)
2
>>> list(Foo.X)
[<Foo.X: 1>]
>>> list(Foo.Z)
[<Foo.X: 1>, <Foo.Y: 2>]