Create an abstract Enum class

Question

I\'m trying to create an abstract enum (Flag actually) with an abstract method. My final goal is to be able to create a string representation of compound enums,

Answer 1

If the goal is simply to change the __str__ output of Students1, you do not need to use abstract classes:

from enum import auto, Flag
from functools import reduce

class TranslateableFlag(Flag):

    def __init__(self, value):
        self.translated = self.name.title()

    def __str__(self):
        cls = self.__class__
        total = self._value_
        i = 1
        bits = set()
        while i <= total:
            bits.add(i)
            i *= 2
        members = [m for m in cls if m._value_ in bits]
        return '%s' % (
                ' | '.join([str(m.translated) for m in members]),
                )

class Students1(TranslateableFlag):
    ALICE = auto()
    BOB = auto()
    CHARLIE = auto()
    ALL = ALICE | BOB | CHARLIE

and in use:

>>> print(Students1.ALICE | Students1.BOB)
Alice | Bob

>>> print(Students1.ALL)
Alice | Bob | Charlie