python的枚举类 Enum

#枚举 from enum import Enum,unique #1、默认枚举类 Month = Enum('Month',('Jan','Feb','Mar')) for name,member in Month.__members__.items(): print(name,'=>',member,',',member.value) #value属性是自动赋给成员的int常量，默认从1开始记数 # Jan => Month.Jan , 1 # Feb => Month.Feb , 2 # Mar => Month.Mar , 3 #2、自定义枚举类 @unique #保证不重复 class Weekday(Enum): Sun = 0 Mon = 1 Tue = 2 Wed = 3 Thu = 4 Fri = 5 Sat = 6 #访问这些枚举类型可以有若干种方法： day1 = Weekday.Mon print(day1) #Weekday.Mon print(Weekday.Mon.value) #1,通过枚举常量获取value print(Weekday(1)) #Weekday.Mon,通过value获取枚举常量