Python参数详解：什么是*args和**kwargs？

def a_function(*args, **kwargs):
    ...

def my_hobbies(*hobbies):
    print("My hobbies: " + ", ".join(hobbies))

>>> my_hobbies('reading', 'writing')
My hobbies: reading, writing

>>> my_hobbies('reading', 'writing', 'hiking', 'learning Python')
My hobbies: reading, writing, hiking, learning Python

>>> some_hobbies = ('reading', 'writing', 'hiking', 'learning Python')
>>> my_hobbies(*some_hobbies)
My hobbies: reading, writing, hiking, learning Python

def my_faves(**favorites):
    print("My favorite things...")
    for category, fave in favorites.items():
        print(f"{category}: {fave}")

>>> my_faves(Color='green', Fruit='persimmon')
My favorite things...
Color: green
Fruit: persimmon

>>> my_faves(Season='winter', Language='Python', Website='dev.to')
My favorite things...
Season: fall
Language: Python
Website: dev.to

>>> some_faves = {"Animal": "whale", "Summer Hobby": "hiking"}
>>> my_faves(**some_faves)
My favorite things...
Animal: whale
Summer Hobby: hiking

def a_function(arg, *args, **kwargs):
    ...