下载
wget https://www.python.org/ftp/python/3.9.16/Python-3.9.16.tgz
安装：
sudo yum groupinstall "Development Tools" -y
sudo yum install openssl-devel libffi-devel bzip2-devel -y
wget https://www.python.org/ftp/python/3.9.16/Python-3.9.16.tgz
tar xf Python-3.9.16.tgz
cd Python-3.9.16
./configure --enable-optimizations
sudo make altinstall
检查：
# python3.9 --version
Python 3.9.16
升级pip3.9
/usr/local/bin/python3.9 -m pip install --upgrade pip
安装项目依赖库：
pip3.9 install -r requirements.txt
同理安装其它版本
