pip2使用国内源

root@yunwei]# cat ~/.pip/pip.conf 
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple

mkdir -p ~/.pip
echo "[global]" >> ~/.pip/pip.conf 
echo "index-url = https://pypi.tuna.tsinghua.edu.cn/simple" >> ~/.pip/pip.conf