MozPython embeds the Python interpreter in Mozilla. With MozPython you can execute Python scripts in Mozilla. Output sent to sys.stdout by a script is displayed in Mozilla's browser window, where it is interpreted as HTML.
cElementTree 0.8 is a fast and memory-efficient implementation of the ElementTree API, for Python 2.1 and later. On typical documents, it's 15-20 times faster than the Python version of ElementTree, and uses 2-5 times less memory.