Solution
Please Install the Updated Packages.
Insight
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.
Affected
python-lxml on Fedora 20
References
Updated on 2015-03-25