Centos 重装Python2.7
<p><strong>一、删除现有的python</strong></p><div class="cnblogs_Highlighter">
<pre class="brush:python;gutter:true;"># rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps ##强制删除已安装程序及其关联
# 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
# whereis python ##验证删除，返回无结果
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<p> </p>
<p><strong>二、删除现有的yum</strong></p>
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<pre class="brush:python;gutter:true;"># rpm -qa|grep yum|xargs rpm -ev --allmatches --nodeps
# whereis yum |xargs rm -frv
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<p><strong>三、从中科，163或者阿里云镜像下载相对应的包</strong></p>
<p> </p>
<p><strong>下载地址：</strong></p>
<p>中科： http://mirrors.ustc.edu.cn/centos/7/os/x86_64/Packages/<br>163 ： http://mirrors.163.com/centos/7/os/x86_64/Packages/<br>阿里： https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/</p>
<p> </p>
<p><strong>下载清单：根据最新版本酌情选择</strong><br>python-libs-2.7.5-48.el7.x86_64.rpm，被python依赖<br>python-2.7.5-48.el7.x86_64.rpm<br>python-iniparse-0.4-9.el7.noarch.rpm， 被yum依赖<br>python-pycurl-7.19.0-19.el7.x86_64.rpm, 被python-urlgrabber依赖<br>python-urlgrabber-3.10-8.el7.noarch.rpm ， 被yum依赖<br>rpm-python-4.11.3-21.el7.x86_64.rpm ， 被yum依赖</p>
<p> </p>
<p><strong>下载后的安装方式</strong></p>
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<p>#rpm -ivh xxx.rpm</p>
<p>以下以163为参考<br> <br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-libs-2.7.5-89.el7.x86_64.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-2.7.5-89.el7.x86_64.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-10.el7.noarch.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/rpm-python-4.11.3-45.el7.x86_64.rpm<br>#rpm -ivh python-libs-2.7.5-89.el7.x86_64.rpm<br>#rpm -ivh python-2.7.5-89.el7.x86_64.rpm<br>#rpm -ivh python-iniparse-0.4-9.el7.noarch.rpm<br>#rpm -ivh python-pycurl-7.19.0-19.el7.x86_64.rpm<br>#rpm -ivh python-urlgrabber-3.10-10.el7.noarch.rpm<br>#rpm -ivh rpm-python-4.11.3-45.el7.x86_64.rpm</p>
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<p><strong>四、下载yum安装包</strong></p>
<p> </p>
<p><strong><strong>下载清单：根据最新版本酌情选择</strong></strong></p>
<p>yum-3.4.3-150.el7.centos.noarch.rpm, 就是它依赖了上面的python库<br>yum-metadata-parser-1.1.4-10.el7.x86_64.rpm<br>yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm</p>
<p>yum安装也按照顺序执行，在执行第一个rpm时， 结尾加上 --nodeps参数强制安装</p>
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<p>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-168.el7.centos.noarch.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm<br>#wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm<br>#rpm -Uvh yum-3.4.3-168.el7.centos.noarch.rpm --nodeps<br>#yum -Uvh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm --nodeps<br>#yum -Uvh yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm --nodeps</p>
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<p> </p>
<p>如果接下来还是提示yum有问题，可以通过#rpm -ivh http://mirror.centos.org/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm --force解决</p>
<p><em><strong>最后大功告成！！！</strong></em></p>
<p>http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-168.el7.centos.noarch.rpm</p><br><br>
来源：https://www.cnblogs.com/fan-yuan/p/15005647.html
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