//卸载python
rpm -qa | grep python | xargs rpm -e --allmatches --nodeps
whereis python | xargs rm -rf–nodeps：不验证依赖包
–allmatches ： 删除所有匹配的包
//创建python下载包目录
mkdir /usr/local/src/python///查看Linux版本 下载对应的Python包
[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)//使用wget命令下载Python的一些所需包（我下载的版本对应的是 7.3.1611）你们下载你们对应的版本。
下载地址：http://vault.centos.org
cd /usr/local/src/python/
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/lvm2-python-libs-2.02.166-1.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/libxml2-python-2.9.1-6.el7_2.3.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-libs-2.7.5-48.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-ipaddress-1.0.16-2.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-backports-1.0-8.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-backports-ssl_match_hostname-3.4.0.2-4.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-2.7.5-48.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-setuptools-0.9.8-4.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-kitchen-1.1.1-5.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/python-chardet-2.2.1-1.el7_1.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/rpm-python-4.11.3-21.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-utils-1.1.31-40.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-plugin-aliases-1.1.31-40.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-plugin-protectbase-1.1.31-40.el7.noarch.rpm
wget http://vault.centos.org/7.3.1611/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm//安装
rpm -Uvh --replacepkgs python*.rpm
rpm -Uvh --replacepkgs lvm2-python-libs*.rpm --nodeps --force
rpm -Uvh --replacepkgs libxml2-python*.rpm
rpm -Uvh --replacepkgs rpm-python*.rpm yum*.rpm --nodeps --force–replacepkgs:如果包存在就从新安装
//测试python
python//测试yum随意安装个应用
yum -y install httpd
