Python에서 열거형을 효과적으로 사용하고 표현하려면 어떻게 해야 합니까?

from enum import Enum
Animal = Enum('Animal', 'ant bee cat dog')

Animal.ant  # <Animal.ant: 1>
Animal['ant']  # <Animal.ant: 1> (string lookup)
Animal.ant.name  # 'ant' (inverse lookup)

from aenum import Enum
Animal = Enum('Animal', 'ant bee cat dog')

Animal.ant  # same as enum34
Animal['ant']  # same as enum34
Animal.ant.name  # same as enum34

def enum(**enums):
    return type('Enum', (), enums)

Numbers = enum(ONE=1, TWO=2, THREE='three')
Numbers.ONE  # 1
Numbers.TWO  # 2
Numbers.THREE  # 'three'

def enum(*sequential, **named):
    enums = dict(zip(sequential, range(len(sequential))), **named)
    return type('Enum', (), enums)

Numbers = enum('ZERO', 'ONE', 'TWO')
Numbers.ZERO  # 0
Numbers.ONE  # 1

def enum(*sequential, **named):
    enums = dict(zip(sequential, range(len(sequential))), **named)
    reverse = dict((value, key) for key, value in enums.iteritems())
    enums['reverse_mapping'] = reverse
    return type('Enum', (), enums)

Numbers = enum('ZERO', 'ONE', 'TWO')
Numbers.reverse_mapping['1']  # 'ONE'

from typing import Literal

Animal = Literal['ant', 'bee', 'cat', 'dog']

def hello_animal(animal: Animal):
    print(f"hello {animal}")