ElementTree-like Python bindings for libxml2 and libxslt

lxml provides a Python binding to the libxslt and libxml2 libraries.
It follows the ElementTree API as much as possible in order to provide
a more Pythonic interface to libxml2 and libxslt than the default
bindings. In particular, lxml deals with Python Unicode strings
rather than encoded UTF-8 and handles memory management automatically,
unlike the default bindings.