I may not be an exact fit into group of people launching an app by end of november. But I'm learning Django and Python now and I pledge to build an app (public or private) before this month.
[1] - http://sahillavingia.com/blog/2010/10/26/reworder-a-tale-of-...
[2] - http://sahillavingia.com/blog/2010/10/24/rmmbr-my-1-hour-app...