args and kwargs in python

Question

I know as what is *args used for but i am not sure about **kwargs

Answer 1

In cases when we don’t know how many arguments will be passed to a function, like when we want to pass a list or a tuple of values, we use *args.

1. >>> def func(*args):

2.   for i in args:

3.       print(i)

4. >>> func(3,2,1,4,7)

3

2

1

4

7

**kwargs takes keyword arguments when we don’t know how many there will be.

1. >>> def func(**kwargs):

2.   for i in kwargs:

3.       print(i,kwargs[i])

4. >>> func(a=1,b=2,c=7)

a.1

b.2

c.7

The words args and kwargs are convention, and we can use anything in their place.