I have read http://www.manageability.org/blog/stuff/chandler-failure and I think it is very danger way of exposing concepts.
In the article pointed out, the quite dead Chandler project is compared to the multi-billion Eclipse project. And then a too easy analysis is done against dynamic languages, where Java is the absolute winner.
I will try to fix some of the things said there, and to add also my two cents here :)
Review of "Getting Started with Pyparsing", Copyright © 2008 O'Reilly Media, Inc.
Released: October 4, 2007