Python type annotations for Enum value

问题

I have this piece of code:

import enum


class Color(enum.Enum):
    RED = '1'
    BLUE = '2'
    GREEN = '3'


def get_color_return_something(some_color):
    pass

How do I properly add type annotations to the some_color varaible in this function, if I suppose to receive a value from the Color enum (for example: Color.RED)?

回答1:

Type hinting the Color class should work:

def get_color_return_something(some_color: Color):
    print(some_color.value)

回答2:

def get_color_return_something(some_color: Color):
    pass

来源：https://stackoverflow.com/questions/52624736/python-type-annotations-for-enum-value