安装依赖
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc libffi-devel
下载 解压
cd /usr/local/
mkdir python3
cd python3/
wget https://www.python.org/ftp/python/3.8.2/Python-3.8.2.tgz
tar -zxf Python-3.8.2.tgz
cd Python-3.8.2
编译
./configure
make
make install
备份python2
mv /usr/bin/python /usr/bin/python.bak
创建新的软连接
ln -s /usr/local/bin/python3.8 /usr/bin/python
更改yum配置，因为yum要使用python2
vim /usr/bin/yum
vim /usr/libexec/urlgrabber-ext-down
将这两个文件头的 #!/usr/bin/python 改为 #!/usr/bin/python2。
