These are the slides and the source code from the talk I did at OggCamp 2010. It's all Creative Commons Attribution, Share Alike.
Update 14 May 2010
Thanks to all the people who have given me positive comments about this talk. I was really pleased to hear people say that they had been inspired to solve problems they had with Python, providing some inspiration was my main goal in preparing this talk, not necessarily showing you how to do things.