A great place to start for TDD-related stuff is testdriven.com. On the topic of Python-specific unit testing, there's also a recent thread on the newly-created extreme-python google group: http://groups-beta.google.com/group/extreme-python/browse_thread/thread/f39844c4cf6c844f?tvc=2 Grig ==== http://agiletesting.blogspot.com