I'm going to be really cheeky and suggest that additional exercises can be found in this book's "follow-up": Head First Python. It's forum is here: http://forums.oreill...d-first-python/
and more information about the book is here: http://shop.oreilly....636920003434.do
- there's also a support page, here: http://python.itcarlow.ie/
If you'd like to learn a little about web development, cloud development (on App Engine), and some simple Android app development, then Head First Python is worth a look. (My view is heavily biased, of course).
As I said, I'm being really cheeky. :-)