首先进入一个保存python安装包的目录，比如：
cd ~
然后无脑执行下面的代码：
yum install -y zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make libffi-devel
wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3.tgz
tar -zxf Python-3.8.3.tgz
mkdir /usr/local/python3 #创建编译安装目录
cd Python-3.8.3
./configure --prefix=/usr/local/python3
make && make install
# 添加软连接
ln -s /usr/local/python3/bin/python3.8 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3.8 /usr/bin/pip3
然后使用python3与pip3，即可得到Python 3.8.3