searching a project to contribute to

[Clint Norton]

Hi all,
    I'm a student currently in the beginning of my master's degree and
I'm searching for an interesting open source project written in Python
to contribute to.
    I have worked as a programmer for the past few years (mostly in
academia but also as a typical full time code monkey in a commercial
company), some of it in python, some in Java (commercial companies
really seem to like Java).
    Anyway, which python projects would be a good start? I generally
like working on algorithmic parts or "Business Logic" and really don't
like doing interface work. The software I like producing has a tendency
to make use of the random and/or math modules, if that says something
about the nature of the work I've done... I really want to give
something back to the community I've taken so much from in the past.

Thanks in advance.