What are some alternatives?
When comparing CherryPy and Ruby on Rails, you can also consider the following products
Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.
Django - The Web framework for perfectionists with deadlines
Laravel - A PHP Framework For Web Artisans
web2py - Web2py is an open source web application framework.
Bottle - bottle.py is a fast and simple micro-framework for python web-applications.