[Zope] Calling a HTTPS url from a python script

Hello, I know this may not be a Zope specific question but I don't know where else to get my answers ... I am about to "simulate" a call to a payment gateway ... normally you create a HTML form with the action set to the gateway and the method set to POST .. but I want to make the call to the gateway from a python script. Alternavely a dtml method will work but ... I haven't got any clues on how to do this .. maybe there is something I have missed ... so are there anyone who can help me .. ?? TIA, Gitte Wange