ʻEasy_install lxml` seems to give an error.
easy_install lxml
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Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
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It looks like no good.
It seems good to include python-lxml.
apt-get install libxml2-dev libxslt1-dev python-dev
apt-get install python-lxml
It seems that this time it went well.
http://stackoverflow.com/questions/6504810/how-to-install-lxml-on-ubuntu