小编Mar*_*kuz的帖子

我定义了两个带有属性的枚举。当我想通过指定属性来访问枚举元素时，它适用于枚举A（一个属性），但不适用于枚举B（两个属性）：

from enum import Enum

class A(Enum):
    ValOne = ('One')
    ValTwo = ('Two')

    def __init__(self, num):
        self.num = num

class B(Enum):
    ValOne = ('Val', 'One')
    ValTwo = ('Val', 'Two')

    def __init__(self, val, num):
        self.val = val
        self.num = num

print(A('One'))
print(B('Val', 'One'))

我得到以下输出：

A.ValOne
Traceback (most recent call last):
  File "test.py", line 19, in <module>
    print(B('Val', 'One'))
  File "/usr/lib/python3.8/enum.py", line 341, in __call__
    return cls._create_(
  File "/usr/lib/python3.8/enum.py", line 444, in _create_
    _, first_enum = cls._get_mixins_(cls, bases) …