##error: command ‘x86_64-linux-gnu-gcc’ failed with exit status 1 http://blog.csdn.net/wang1144/article/details/42277179

sudo apt-get install libxml2-dev libxslt1-dev python-dev
sudo apt-get install zlib1g-dev
sudo apt-get install libevent-dev
sudo pip install lxml
or
sudo apt-get install python-twisted-web python2.7-de
sudo apt-get build-dep python-lxml
sudo pip install lxml --upgr

wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py insta