Good blog post on *args sand **kwargs

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

I haven't found myself needing variable argument lists in functions, but I see it frequently in other people's code. Variable function argument lengths in C is something I understand on a superficial level but have never needed to use myself - but I almost never see it in other code I read.