Pattern is a fast, robust, general-purpose Python library for web mining

Pattern is a fast, robust, general-purpose Python library for web mining, text analysis and (upcoming in 1.1) graph visualization.

Extensive documentation can be found here:
http://www.clips.ua.ac.be/pages/pattern

http://www.clips.ua.ac.be/news/version-10-of-the-pattern-web-mining-module