Pyjamas

From HackRVA

Pyjamas is a port of GWT (Google Web Toolkit) to python. It compiles python into javascript for creating ajax applications. Allows for the creation of webpages via use of things like Panels, labels, textentry boxes. If you're used to UI development in environments like Gnome/KDE/Windows, you'll feel more at home with pyjamas.

Also supports serialization (XML/JSON) and allows you to query a database and return results in python dictionaries.

And, with Ajax, you have the benefit of dynamic data without browser reloads.