[Zope] using sqlsession in python script??

[Chris Snow]

Apologies if I have come through to the wrong list.

I would like to use sqlsession in a python script.  The equivalent of what 
I'd like to do from a dtml method is:

<dtml-call Session>
<dtml-call "SESSION.set('userid', 'snowch')">

How can I do this from a python script?

I am a Zope newbie, so please go easy....

Thanks,

Chris Snow