You can run python on windows mobile; I even found some kind of IDLE version for it - there's a bunch of links here: <a href="http://www.awaretek.com/pymo.html#win" rel="nofollow">http://www.awaretek.com/pymo.html#win</a>
I thought it was pretty good, but typing symbols was a pain. I wrote some twitter data mining stuff with it while waiting for a plane with it once.<p>If you want to do anything else with your phone, you don't really want a windows mobile, though :-(