Python中使用枚举类

JAN = 1
FEB = 2
MAR = 3
...
NOV = 11
DEC = 12

from enum import Enum

Month = Enum('Month', ('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'))

for name, member in Month.__members__.items():
    print(name, '=>', member, ',', member.value)

Jan => Month.Jan , 1
Feb => Month.Feb , 2
Mar => Month.Mar , 3
Apr => Month.Apr , 4
May => Month.May , 5
Jun => Month.Jun , 6
Jul => Month.Jul , 7
Aug => Month.Aug , 8
Sep => Month.Sep , 9
Oct => Month.Oct , 10
Nov => Month.Nov , 11
Dec => Month.Dec , 12

from enum import Enum, unique

@unique
class Weekday(Enum):
    Sun = 0 # Sun的value被设定为0
    Mon = 1
    Tue = 2
    Wed = 3
    Thu = 4
    Fri = 5
    Sat = 6

day1 = Weekday.Mon
print(day1) 

Weekday.Mon

print(Weekday.Tue)

Weekday.Tue

print(Weekday['Tue'])

Weekday.Tue

print(Weekday.Tue.value)

2

print(Weekday(1))

Weekday.Mon

for name, member in Weekday.__members__.items():
     print(name, '=>', member)

Sun => Weekday.Sun
Mon => Weekday.Mon
Tue => Weekday.Tue
Wed => Weekday.Wed
Thu => Weekday.Thu
Fri => Weekday.Fri
Sat => Weekday.Sat

from enum import Enum,auto
class Color(Enum):
    RED=auto()
    BLUE=auto()
    GREEN=auto()

list(Color)

[<Color.RED: 1>, <Color.BLUE: 2>, <Color.GREEN: 3>]

list(Color)[0].value

1

for name, member in Color.__members__.items():
     print(name, member)

RED Color.RED
BLUE Color.BLUE
GREEN Color.GREEN

Color.RED is Color.RED

True

Color.RED is Color.BLUE

False