Pyjamas is a stand-alone python to javascript compiler, an ajax framework / library and a desktop-like widget set.

this package contains a port of gchart: http://code.google.com/p/gchart to pyjamas. written in pure python, it can be used to create graphs, bar charts and pie charts in either a user's web browser (compiled to javascript), or as a desktop application under pyjamas-desktop.

an online demo is here: http://pyjs.org/examples/gcharttestapp/output/gcharttestapp.html

please note: pyjamas-gchart is experimental but functional, and does not yet use svg canvas (which is much faster).