The mod_python project is now officially dead. (blog.dscpl.com.au)

They don't make a big deal out of it, but Phusion's Passenger (as is mega popular in the Ruby world) supports WSGI backends: http://www.modrails.com/

been unofficially dead for a while. mod_wsgi replaces it: http://code.google.com/p/modwsgi/