下载源码包

进入Python官网，下载指定版本的源码包。

这里以python3.8.13为例：

$ wget https://www.python.org/ftp/python/3.8.13/Python-3.8.13.tgz

编译源码

安装编译所需的依赖：

$ yum install -y gcc patch libffi-devel python-devel  zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

进行编译安装：

$ tar xf Python-3.8.13.tgz
$ cd Python-3.8.13
$ ./configure --prefix=/usr/local/python3.8/	# /usr/local/python3.8/ 是安装的目录
$ make && make install

配置环境变量

$ echo -e "export PYTHON_HOME=/usr/local/python3.8\nexport PATH=\$PYTHON_HOME/bin:\$PATH" > /etc/profile.d/python3.8.sh
$ source /etc/profile.d/python3.8.sh