Pattern Programming
I believe we should defer to C2 for the main ideas about Patterns. I believe we should apply the BridgePattern. Use C2 to describe the pattern itself, and then show it here in it's Python-specific glory. There's seems to be little point in attempting to recreate the depth of C2 here.
See also :
[http://dales.rmplc.co.uk/Duncan/accu/pythonpatterns.html/ Patterns in Python by Duncan Booth]
GoF