def enum(*sequential, **named):
enums = dict(zip(sequential, [object() for _ in range(len(sequential))]), **named)
return type('Enum', (), enums)
If you name it, is your problem, but if not creating objects instead of values allows you to do this:
>>> DOG = enum('BARK', 'WALK', 'SIT')
>>> CAT = enum('MEOW', 'WALK', 'SIT')
>>> DOG.WALK == CAT.WALK
False
When using other implementations sited here (also when using named instances in my example) you must be sure you never try to compare objects from different enums. For here's a possible pitfall:
>>> DOG = enum('BARK'=1, 'WALK'=2, 'SIT'=3)
>>> CAT = enum('WALK'=1, 'SIT'=2)
>>> pet1_state = DOG.BARK
>>> pet2_state = CAT.WALK
>>> pet1_state == pet2_state
True
Yikes!
