from enum import Flag

class Color(Flag):

    RED = 1

    BLUE = 2

    GREEN = 4

    WHITE = RED | BLUE | GREEN # <- How do I retrieve this alias?

list(Color) 

# [<Color.RED: 1>, <Color.BLUE: 2>, <Color.GREEN: 4>]

# How do I include Color.White and other aliases in this list?

__iter__(self):

Returns all contained non-alias members

Changed in version 3.11: Aliases are no longer returned during iteration.

__members__ is a read-only ordered mapping of member_name:member items. It is only available on the class.

mapping = Color.__members__

# mappingproxy({'RED': <Color.RED: 1>,

#              'BLUE': <Color.BLUE: 2>,

#              'GREEN': <Color.GREEN: 4>,

#              'WHITE': <Color.WHITE: 7>})

colors_list = list(mapping.values())

# [<Color.RED: 1>, <Color.BLUE: 2>, <Color.GREEN: 4>, <Color.WHITE: 7>]

class Color(Flag):

    RED = 1

    BLUE = 1

print(Color.__members__)

# mappingproxy({'RED': <Color.RED: 1>, 'BLUE': <Color.RED: 1>})