[Mailman-Users] Newbie question - tweaking Mailman and .py files

[Doug Brandon]

Mailman is my first exposure to Python.  I've installed Mailman 2.1b6 and 
have it running fine.  I've looked through FAQs and list archives, and am 
posting here as a last resort.  Sorry for the newbie question.  :)

I'm tweaking Mailman/Handlers/CookHeaders.py to experiment with the headers 
on a few announce-only lists which I have created.  I'm 99% sure that the 
changes I'm making should result in visible changes.  In particular, I'm 
using personalized mode and trying to get rid of the "Cc:list at domain.com" 
that mailman automatically inserts.  Anyway, after tweaking the .py file, I 
run python to make sure the .pyc is updated.  I figured this is all I would 
have to do, but no matter what I do, I can't seem to make Mailman see any 
of my changes.  Even something simple like commenting out the 
X-Mailman-Version tag insertion doesn't work.

I'm probably missing a very obvious step, but I can't figure it out!

Thanks,
    Doug