1. ubautu系统
sudo apt-get install python2.7
sudo apt-get install python3
卸装
sudo apt-get remove python3卸载Python3.6及其依赖
sudo apt-get remove --auto-remove python3.6
3. 将python命令映射到python3
sudo apt install python-is-python3标签：get,python,sudo,apt,remove,安装,python3 From： https://www.cnblogs.com/txt1024/p/17353610.html