A simple and basic regular expression lib implemented in Python.
Based on works Based on works of http://www.codeproject.com/Articles/28307/An-Implementation-of-Regular-Expression-Parser-in and knowledge from http://www.codeproject.com/Articles/5412/Writing-own-regular-expression-parser
With Tornado installed, webmain.py could be executed to launch a html-based interactive interface at http://localhost:8123.