pip install virtualenv
pip install virtualenvwrapper
vim ~/.bashrc添加下面几行
export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/workspace
source /usr/local/bin/virtualenvwrapper.sh
source ~/.bashrc
virtualenv和virtualenvwrapper安装和配置
原文：http://www.cnblogs.com/gakyho/p/7780735.html