[mod_python] Newbie Question

Hello,

I have a quick question and it might be very silly:

How do I pass variables between pages short of building a query string 
into the URL? Is there a way to set variables in the request object?

What I'm trying to do is the following:

user fills out a form
form calls saveform function
input is validated
if not valid input return to the form with user values filled out.

So far the only way I manage to do this is with a query string. I am 
just wondering if there's a more elegant way to do this?


Thank you