Ubuntu中python多个版本之间切换

sudo pip install virtualenvwrappermkdir $HOME/.virtualenvssudo vim ~/.bashrc#在打开的.bashrc文件中添加如下2行：export WORKON_HOME=$HOME/.virtualenvssource /usr/local/bin/virtualenvwrapper.shsource ~/.bashrcmkvirtualenv -p /usr/bin/python2.7 python27_envmkvirtualenv -p /usr/bin/python3.5 python35_env#使用python2workon python27_env#退出python2source deactivate#使用python3workon python35_env#退出python3source deactivate#进入python27_env虚拟环境workon python27_envsudo vim $VIRTUAL_ENV/bin/postactivate#在打开的文件添加如下一行cd /worksapce/py27_devrmvirtualenv python27_env

echo alias python=python3 >> ~/.bashrcsource ~/.bashrc