# centos 资源库
http://mirrors.163.com/centos/7/os/x86_64/Packages/
# 删除系统中已安装的 Python
rpm -qa|grep python|xargs rpm -e --allmatches --nodeps
whereis python|xargs rm -rf
# 下载 Python 相关的安装文件
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/python-2.7.5-88.el7.x86_64.rpm
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/python-libs-2.7.5-88.el7.x86_64.rpm
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/python-urlgrabber-3.10-10.el7.noarch.rpm
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/python-devel-2.7.5-88.el7.x86_64.rpm
wget http://mirrors.163.com/centos/7.8.2003/os/x86_64/Packages/rpm-python-4.11.3-43.el7.x86_64.rpm
# 安装 Python 2.7.5
rpm -ivh python-*
rpm -ivh rpm-python-*
# 查看 Python 安装版本
python -V