尧图网页设计 
from enum import Enum class PlainModel(str, Enum): alice AAAA class Model(): alice AAAA a PlainModel(AAAA) b PlainModel(AAAA) c Model() d Model() print(a is b) # True print(c is d) # False Enum枚举实例化不会创建新对象
from enum import Enum class PlainModel(str, Enum): alice AAAA class Model(): alice AAAA a PlainModel(AAAA) b PlainModel(AAAA) c Model() d Model() print(a is b) # True print(c is d) # False