Pychart

PyChart is a Python library for creating high quality Encapsulated Postscript, PDF, PNG, or SVG charts. It currently supports line plots, bar plots, range-fill plots, and pie charts. Because it is based on Python, you can make full use of Python's scripting power. See some examples.

I've used PyChart to draw some real graphs to publish some real papers (see my SOSP and TOCS papers for example). So it's for real!

PyChart is distributed under GNU General Public License.

Download Pychart

Related links

Here are links to some competitors, in case you don't like PyChart:
This page is maintained by Yasushi Saito (firstname dot lastname at gmail dot com, http://www.ysaito.com).