1、python 指向的是python2.7
2、python3 指向的python3.11
环境依赖准备

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make

3、安装python3

去官网下载编译安装包或者直接执行以下命令下载

wget https://mirrors.huaweicloud.com/python/3.11.0/Python-3.11.0.tar.xz

解压

tar -xvJf Python-3.11.0.tar.xz

切换进入

cd Python-3.11.0

编译安装

./configure prefix=/usr/local/python3

make && make install

4、建立软连接

ln -s /usr/local/python3/bin/python3 /usr/bin/python3