[Tutor] A chat server in Python

[Danny Yoo]

Hi everyone,

I've started to write a chat server in Python!  It's in preparation for
writing the online network part of that dots-and-boxes project that I
forgot about last month.  *grin*

The code is a bit long, so I've placed it here:

    http://hkn.eecs.berkeley.edu/~dyoo/python/chatserver/chatserver.py

I'd like some comments on how to improve it to make it more readable and
easy to understand.  Thank you!