from enum import IntFlag

Perm = IntFlag('Perm', {'R': 4, 'W': 2, 'X': 1})
print(tuple(Perm))


class LabeledFlag(IntFlag):
    def __new__(cls, value: int, label: str):
        obj = super().__new__(cls, value)
        obj._value_ = value
        obj.label = label
        return obj


LabeledPerm = LabeledFlag('LabeledPerm', {'R': (4, 'Read'), 'W': (2, 'Write'), 'X': (1, 'Exec')})
print(tuple(LabeledPerm))

class LabeledFlag(IntFlag):
    def __new__(cls, value: int, label: str):
        obj = super().__new__(cls, value)
        obj._value_ = value
        obj.label = label
        return obj

    @classmethod
    def _missing_(cls, value):
        pseudo_member = super(_DnskeyFlagBase, cls)._missing_(value)
        if value in cls._value2member_map_ and pseudo_member.name is None:
            cls._value2member_map_.pop(value)
        return pseudo_member