webserver application (via Twisted?)

[flupke]

I need to program and setup serveral webservices.
If i were still using jsp, i would use Tomcat to make the several
applications available on a given port.
How can i accomplish this in Python?
I was thinking about Twisted but it's not clear to me what parts i need 
to make a webserver listen on a certain port and having it serve 
different application based on the url that i received.

Any advice on this?

Thanks,
Benedict