Python开关案例允许可选参数

您可以使用部分

from functools import partialdef zero(number):    return number == "zero"def one():    return "one"def numbers_to_functions_to_strings(argument):    switcher = {        0: partial(zero, argument),        1: one,        2: lambda: "two",    }    func = switcher.get(argument, lambda: "nothing")    return func()