Python 2.6 Modules on OS X
OS X handles Python installations differently than Windows or Linux. This becomes evident when you try to install modules. Particularly if you then try to use those modules.
If you are like me and your Mac OS 10.5 install came with Python 2.5 and then you updated to Python 2.6, you should follow these instructions on droidism.com. They also tell you how to install Python 2.6, but most crucially, they explain that there is a separate easy_install setup for Python 2.6.