"print" as function not statement

Duncan Booth wrote:
> You need a bit more checking to be sure nobody tried to pass in any > unexpected keyword arguments, and your output loop is a bit messy.

Why check for unknown keyword arguments? It seems to me that better 
forward-compatibility is achieved if we ignore them.

You're right about the output loop, though. I haven't really tried list 
comprehensions yet, so I didn't even think of using them. Thanks.