WebwareForPython is a web application server written in PythonLanguage, similar in purpose to ZopeApplicationServer, but much lighter in weight and shallower in learning curve.
http://webware.sourceforge.net/
Be sure to checkout the Webware Wiki: http://webware.colorstudy.net/twiki/bin/view/Webware
Webware uses many of the concepts from JavaServlet engines, only as with most Python systems, it is much simpler.