python安装virtualenv和virtualenvwrapper
1. pip常用命令pip安装命令: pip install package_name
pip升级命令:pip install –ungrage package_name
或:pip install -U package_name
pip卸载命令:pip uninstall package_name
如pip install djangopip install -U django
2. virtualenv的安装virtualenv的安装:
$ sudo pip install virtualenv
或