I thought I’d post this here, this is the second time I ran into this issue on Ubuntu and forgot what I did the first time.

If you get errors about things missing when you do ‘sudo pip install lxml’ on Ubuntu, you’ll probably need to install the following development packages (source):

• sudo apt-get install python-dev
• sudo apt-get install libxml2-dev
• sudo apt-get install libxslt1-dev

You may also want to do ‘sudo pip install lxml –upgrade’ if pip tells you that it’s already installed but you know it wasn’t properly installed.