Enums were added to Python in version 3.4 by PEP 435.
from enum import Enum
class Color(Enum):
red = 1
green = 2
blue = 3
print(Color.red) # Color.red
print(Color(1)) # Color.red
print(Color['red']) # Color.red
class Color(Enum):
red = 1
green = 2
blue = 3
[c for c in Color] # [<Color.red: 1>, <Color.green: 2>, <Color.blue: 3>]
To use enums in Python less than 3.4, you can use enum34 package:
pip install enum34