# way1 class Directions:     up = 0     down = 1     left = 2     right =3     print Directions.down # way2 dirUp, dirDown, dirLeft, dirRight = range(4) print dirDown # way3 import collections dircoll=collections.namedtuple('directions', ('UP', 'DOWN', 'LEFT', 'RIGHT')) directions=dircoll(0,1,2,3) print directions.DOWN # way4 def enum(args, start=0):     class Enum(object):         __slots__ = args.split()         def __init__(self):             for i, key in enumerate(Enum.__slots__, start):                 setattr(self, key, i)     return Enum() e_dir = enum('up down left right') print e_dir.down # way5 # some times we need use enum value as string Directions = {'up':'up','down':'down','left':'left', 'right':'right'} print Directions['down']