python3:
virtualenv -p /usr/bin/python3 /home/snow/py3env
source /home/snow/py3env/bin/activate
pip install package-name
python2:
virtualenv -p /usr/bin/python /home/snow/py2env
source /home/snow/py2env/bin/activate
pip install package-name
Ubuntu 14.04 64bit安装IPython：http://www.linuxdiyf.com/linux/13981.html
linux环境如何升级Python：http://www.linuxdiyf.com/linux/8395.html
6个最佳的开源Python应用服务器：http://www.linuxdiyf.com/linux/13330.html
无需操作系统直接运行Python代码：http://www.linuxdiyf.com/linux/12104.html