You can use the built-in Enum (Python 3.4+), the enum34 backport, or, for more advanced needs (which this is not), the new aenum library.

If you use IntEnum:

class RGB(IntEnum): red = 1 green = 2 blue = 3 

If you have an int and want the matching Enum member:

>>> c = 2 >>> c = RGB(c) >>> c <RGB.green: 2> 

Once you have an IntEnum member, it is already an int:

>>> type(c) <enum 'RGB'> >>> isinstance(c, int) True 

The downside to IntEnum is that every IntEnum member will compare equal to every other IntEnum member that has the same value:

class Fruit(IntEnum): banana = 1 >>> Fruit.banana == Color.red True 

If you want to keep your Enums separate, but don't want to lose the intability of an IntEnum you could do:

class RGB(Enum): red = 1 green = 2 blue = 3 def __int__(self): return self.value 

Lookup works the same:

>>> c = 2 >>> c = RGB(c) >>> c <RGB.green: 2> 

But members are no longer ints:

>>> type(c) <enum 'RGB'> >>> isinstance(c, int) False 

So you do have to cast it (or access the value attribute):

>>> int(c) 2 >>> c.value 2 

And we no longer have the problem if Fruit.banana being equal to RGB.red:

>>> Fruit(1) == RGB(1) False 

If you are using Python 3+ there are some cool things you can do with aenum, such as:

import aenum class RGB(aenum.Enum, start=1): red green blue def __int__(self): return self.value 

which results in the same class as the last Enum example.

For here latest Python 3.7 and some Enum:

from enum import Enum class BatteryState(Enum): Unknown = 0 Unplugged = 1 Charging = 2 Full = 3 

Convert Int to Enum

just pass int to Enum

batteryStateInt = 2 curBattryState = BatteryState(batteryStateInt) print("curBattryState=%s" % curBattryState) 

can got what you expected Enum:

curBattryState=BatteryState.Charging 

Extra

get Enum string expression can via name

curBattryStateName = curBattryState.name print("curBattryStateName=%s" % curBattryStateName) 

can got expected: Charging