This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
Enums are readable names that are bound to a constant value.
To use enums, import Enum from the enum standard library module:
from enum import EnumThen you can initialize a new enum in this way:
class State(Enum):
INACTIVE = 0
ACTIVE = 1Once you do so, you can reference State.INACTIVE and State.ACTIVE, and they serve as constants.
Now if you try to print State.ACTIVE for example:
print(State.ACTIVE)it will not return 1, but State.ACTIVE.
The same value can be reached by the number assigned in the enum: print(State(1)) will return State.ACTIVE. Same for using the square brackets notation State['ACTIVE'].
You can however get the value using State.ACTIVE.value.
You can list all the possible values of an enum:
list(State) # [<State.INACTIVE: 0>, <State.ACTIVE: 1>]You can count them:
len(State) # 2
This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
flaviocopes.com | Sciencx (2021-02-18T05:00:00+00:00) Python Enums. Retrieved from https://www.scien.cx/2021/02/18/python-enums/
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