Information retrieval software that can be used with Python:


 * [[http://xapian.org/|Xapian]]


 * [[PyLucene|PyLucene]]
 * [[http://grassyknoll.googlecode.com/|GrassyKnoll]] a search engine in Python
 * [[http://code.google.com/p/tfidf/|TF IDF]] a basic TF-IDF module on Google code
 * [[https://github.com/gr33ndata/irlib|IRLib]] Information Retrieval Library (in Python)