python3安装教程

黄振国

#安装Python3
yum install python3 -y

#查看版本
python3 -V

#更改centos7的python版本为3
rm -rf /usr/bin/python
ln -s /usr/bin/python3 /usr/bin/python
sed -i 's/\/usr\/bin\/python/\/usr\/bin\/python2/g' /usr/bin/yum
sed -i 's/\/usr\/bin\/python/\/usr\/bin\/python2/g' /usr/libexec/urlgrabber-ext-down

#基础教程
https://www.runoob.com/python3/python3-tutorial.html