1,python下载地址
2,安装编译环境
yum install gcc-c++ gcc make cmake zlib-devel bzip2-devel openssl-devel ncurse-devel libffi-devel -y
3,在线下载或是本地上传python3.8.3源码包
cd /henan wget https://www.python.org/ftp/python/3.8.2/Python-3.8.2.tgz
4,解压并配置
tar -zxvf Python-3.8.2.tgz cd Python-3.8.2 mkdir -p /usr/local/python3 ./configure --prefix=/usr/local/python3 或是 ./configure --prefix=/usr/local/python3 --enable-optimizations #备注如果添加enable-optimizations 需要升级系统自带的gcc
5,编译并安装
make make install #两步 echo $? 没有报错即算编译成功
6,更换系统默认python版本
备份旧版:
mv /usr/bin/python /usr/bin/python.bak mv /usr/bin/pip /usr/bin/pip.bak
配置环境变量:创建新版本python和pip的软链接
ln -s /usr/local/python3/bin/python3.7 /usr/bin/python ln -s /usr/local/python3/bin/pip3 /usr/bin/pip
7,关键点来了
因为yum的功能依赖Pyhon2,现在更改默认Python版本后会导致yum无法正常工作,所以进行以下四处修复