centos6.10 重新安装python2.6 和 yum （不可以直接安装yum yum 依赖于python2.6）

（升级或卸载Python导致 yum出错）

一：升级python导致yum出错

1. cd /usr/bin/yum

2. #!/usr/bin/python 修改为 #!/usr/bin/python2.6

二：完全重装python和yum（卸载系统的安装的python）

<1> 删除python包

1. whereis python #　查看当前系统安装的python包

2. rpm -qa|grep python|xargs rpm -ev –allmatches –nodeps ##强制删除系统安装程序python包及其相关

3. whereis python |xargs rm -frv ##删除所有残余文件 ##xargs，允许你对输出执行其他某些命令

4. whereis python ##验证删除，返回无结果

<2> 删除现有yum

1.rpm -qa|grep yum|xargs rpm -ev –allmatches –nodeps

2. whereis yum |xargs rm -frv

<3>下载相应的rpm包（centos6版本） http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/

注意：rpm包的版本会更新，查看上面链接的源具体下载

1.下载相应的rpm包

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-2.6.6-66.el6_8.x86_64.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-devel-2.6.6-66.el6_8.x86_64.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-libs-2.6.6-66.el6_8.x86_64.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-pycurl-7.19.0-9.el6.x86_64.rpm

wgt http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-setuptools-0.6.10-4.el6_9.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/rpm-python-4.8.0-59.el6.x86_64.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/yum-utils-1.1.30-41.el6.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-41.el6.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/yum-plugin-protectbase-1.1.30-41.el6.noarch.rpm

wget http://mirrors.ustc.edu.cn/centos/6/os/x86_64/Packages/yum-plugin-aliases-1.1.30-41.el6.noarch.rpm

http://mirrors.163.com/centos 更换源为国内源，速度较快

2. rpm相应包

rpm -Uvh –replacepkgs python*.rpm

rpm -Uvh –force –nodeps –replacepkgs rpm-python*.rpm yum*.rpm （–force –nodeps 强制安装解决依赖问题）