Welcome to the 0.9.2 py lib and py.test release - mainly fixing Windows issues, providing better packaging and integration with setuptools.
Here is a quick summary of what the py lib provides:
See here for more information:
Pypi pages: http://pypi.python.org/pypi/py/
Download/Install: http://codespeak.net/py/0.9.2/download.html
Documentation/API: http://codespeak.net/py/0.9.2/index.html
best and have fun,
holger krekel