如何在python中仅给具有默认值的函数的第二个参数赋值

Question

def func(a=2,b=3):
    print(a*b)

so this code prints 6 if you call:

func()  

and prints 10 if you call

func(5,2)

so how do you give the second parameter a value and leave the first one with the default? I already tried

func(,4)

but doesn't work this looks good:

funk(b=4)

but i want to read the values that might or might not be there from an xml file like this:

{"a,b":"2,4"}  

or this:

{"a,b":",4"}

what do you suggest?

Answer 1

Just do func(b=4) . This is the beauty of keyword arguments, one of my favourite features of Python :)