Default arguments with *args and **kwargs

Question

In Python 2.x (I use 2.7), which is the proper way to use default arguments with *args and **kwargs?
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Answer 1

You could also use a decorator like this:

import functools
def default_kwargs(**defaultKwargs):
    def actual_decorator(fn):
        @functools.wraps(fn)
        def g(*args, **kwargs):
            defaultKwargs.update(kwargs)
            return fn(*args, **defaultKwargs)
        return g
    return actual_decorator

Then just do:

@default_kwargs(defaultVar1 = defaultValue 1, ...)
def foo(*args, **kwargs):
    # Anything in here

For instance:

@default_kwargs(a=1)
def f(*args, **kwargs):
    print(kwargs['a']+ 1)

f() # Returns 2
f(3) # Returns 4