merge_enum.py

import enum
from typing import Iterable, Type


def merge_enums(new_name: str, *enums: Iterable[Type[enum.Enum]]) -> Type[enum.Enum]:
    attributes = [{m.name: m.value for m in e} for e in enums]

    intersection = set.intersection(*map(set, attributes))
    if intersection:
        raise ValueError(f"Error codes are duplicated: {', '.join(intersection)}")

    return enum.Enum(new_name, {k: v for e in attributes for k, v in e.items()})