Is it possible to write web-based GUI using Python?

[Pierre Rouleau]

I have been using Python for some pretty basic CGI scripts using the cgi 
module and the like on a simple http server running over the 
CGIHTTPServer.  I am now wondering if it would be possible to implement 
a complete GUI application available to a web browser and implemented in 
Python on the server side.

At first glance, http://www.python.org/topics/web/ does not seem to 
contain anything related to this.

What I'd like to be able to do is implement a complete GUI-based control 
application (with buttons, slider, whatever widgets the app needs) 
accessible over the web.

Is this possble with Python?  If so, where the best place to start looking?

Thanks!

-- 
         Pierre Rouleau