What is *args and **kwargs in Python ?(Solved)

The special syntax, *args and **kwargs in function definitions is used to pass a variable number of arguments to a function. The single asterisk form (*args) is used to pass a non-keyworded, variable-length argument list, and the double asterisk form is used to pass a keyworded, variable-length argument list. Here is an example of how to use the non-keyworded form. This example passes one formal (positional) argument, and two more variable length arguments.

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def test_var_args(farg, *args):
    print "formal arg:", farg
    for arg in args:
        print "another arg:", arg

test_var_args(1, "two", 3)

************************Output***************************************** 

formal arg: 1
another arg: two
another arg: 3

Here is an example of how to use the keyworded form. Again, 

one formal argument and two keyworded variable arguments are passed. 

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def test_var_kwargs(farg, **kwargs):
    print "formal arg:", farg
    for key in kwargs:
        print "another keyword arg: %s: %s" % (key, kwargs[key])

test_var_kwargs(farg=1, myarg2="two", myarg3=3)

************************Output*****************************************

formal arg: 1
another keyword arg: myarg2: two
another keyword arg: myarg3: 3