Ubuntu默认安装了Python2.7和3.5
输入命令python

按Ctrl+D退出python命令行

输入命令sudo add-apt-repository ppa:jonathonf/python-3.6

如果报错: add-apt-repository: command not found
解决办法:
sudo apt-get install software-properties-common python-software-properties
完成这个,就可以使用add-apt-repository命令了。
按Enter确认
输入命令sudo apt-get update
输入命令sudo apt-get install python3.6
按Y确认
调整Python3的优先级,使得3.6优先级较高
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.5 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 2
更改默认值,python默认为Python2,现在修改为Python3
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
此时再输入命令python

可以看到此时已经是Python3.6了
网友评论