What is the purpose and use of **kwargs?

Question

What are the uses for **kwargs in Python?

I know you can do an objects.filter on a table and pass in a **kwargs argument. &nbs

Answer 1

Motif: *args and **kwargs serves as a placeholder for the arguments that need to be passed to a function call

using *args and **kwargs to call a function

def args_kwargs_test(arg1, arg2, arg3):
    print "arg1:", arg1
    print "arg2:", arg2
    print "arg3:", arg3

Now we'll use *args to call the above defined function

#args can either be a "list" or "tuple"
>>> args = ("two", 3, 5)  
>>> args_kwargs_test(*args)

result:

arg1: two
arg2: 3
arg3: 5

---

Now, using **kwargs to call the same function

#keyword argument "kwargs" has to be a dictionary
>>> kwargs = {"arg3":3, "arg2":'two', "arg1":5}
>>> args_kwargs_test(**kwargs)

result:

arg1: 5
arg2: two
arg3: 3

Bottomline : *args has no intelligence, it simply interpolates the passed args to the parameters(in left-to-right order) while **kwargs behaves intelligently by placing the appropriate value @ the required place