Add support for *args\**kwds

[GoogleCodeExporter]

http://www.saltycrane.com/blog/2008/01/how-to-use-args-and-kwargs-in-python/

Original issue reported on code.google.com by levchenk...@gmail.com on 12 Jul 2011 at 11:55

[GoogleCodeExporter]

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.

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

test_var_args(1, "two", 3)

Results:
 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.

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)

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

Original comment by levchenk...@gmail.com on 12 Jul 2011 at 11:58

[GoogleCodeExporter]

Thanks for the recommendation.  This is the first time I've received a 
recommendation for this feature... and I think it is a good idea.  I will 
investigate the implementation.  The code you provided can serve as a couple 
unit tests.  I've re-filed this as Type-Enhancement rather than defect.

Original comment by dwhall...@gmail.com on 15 Jul 2011 at 2:29

• Added labels: Type-Enhancement, Component-pmvm
• Removed labels: Type-Defect, Component-all