(trying again) Secret Labs' Regular Expression Engine (SRE) is the regular expression engine shipped with Python 1.6 and 2.0. The latest SRE version (from Python 2.1a2) is now available separately: http://www.pythonware.com/products/sre Changes from the 2.0 version include a couple of bug fixes, and improved portability; this version works with Python 1.5.2 and later versions. The distribution includes library source code, and prebuilt Windows binaries for Python 1.5.2 and 2.0. enjoy, the pythonware team "Secret Labs -- makers of fine pythonware since 1997."