PySmire is a Python based Ant liked framework. Different from the XML file for Ant ,Python is the base script for PySmire. Actually,It's a Python package and it's not only a build tool.
Build tool in pure Python. http://boguslawski-piotr.github.com/atta/
Atta is a FREE build tool, targets-tasks driven, developed in pure Python. Similar in philosophy to the Ant, NAnt, etc. but without the use of XML syntax nightmare.
http://boguslawski-piotr.github.com/atta/