Pre-university student looking to contribute to OS project

[Jason Walsh]

I'm a pre-university student with about 7 months Python experience
looking for an open source project to get involved in (learn the code,
do bug fixes, etc).  I've searched freshmeat.net, SourceForge, and
Google Code, and found a few possibilities, but I thought I'd ask the
list and see if there are any projects in particular that would be
good for a younger programmer like me.  I've taken a look at this
(http://wiki.python.org/moin/CodingProjectIdeas) and there's good
things there, but I'd really like to get involved in a pre-existing
project.

Thanks for the help,

Jason