Just for the record: http://www.amk.ca/python/howto/sockets/
"Of the various forms of IPC (Inter Process Communication), sockets are by far the most popular. On any given platform, there are likely to be other forms of IPC that are faster, but for cross-platform communication, sockets are about the only game in town." -- http://mail.python.org/mailman/listinfo/python-list
