一.安装准备

1.安装python3编译环境

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

2.下载python包

wget https://www.python.org/ftp/python/3.8.5/Python-3.8.5.tgz

二.开始安装

1.解压包：tar zxvf Python-3.8.5.tgz

2.cd Python-3.8.5

3../configure --prefix=/usr/local/python3.8.5

4.make && make install

5.ln -s /usr/local/python3.8.5/bin/python3.8 /usr/bin/python3

6.检查运行