centos安装lxml和pyspider

yum -y install --nogpgcheck python34u-devel.x86_64 
yum -y install libcurl-devel
yum -y install libxslt-devel
yum -y install libxml2-devel
yum -y install libxslt
yum -y install libxml2

pip3.4 install lxml
pip3.4 install pyspider