Some specifications for passing parameters when a Python function is called

Position parameters
The position parameter must correspond to the formal parameter one by one

def test(a,b) #a,b就是位置参数

Keyword parameters
Independent of formal parameter order

def test(x,y)    print(x,y)test(x=2,y=3)

Positional parameters must precede the keyword argument

(**kwargs): convert n keyword arguments to dictionary format

def test(**kwargs)    print(kwargs)test(c=1,b=2)

(*args): Converts n positional parameters into a

def test(*args)    print(args)test(1,2,3,4,5)

Some specifications for passing parameters when a Python function is called