枚举

'枚举类'
from enum import Enum,unique
Month = Enum('Month', ('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'))
for name,N in Month.__members__.items():
    print(name,'==>',N,',',N.value)
#unique保证没有重复值
class (Enum):
    Sun = 0 # Sun的value被设定为0
    Mon = 1
    Tue = 2
    Wed = 3
    Thu = 4
    Fri = 5
    Sat = 6
print(Weekday.Sat)
print(Weekday(1))