centos 卸載python2以後的解決辦法

網上看到有同窗yum不能使用的消息，出現了下面的結果

 

無賴的使用了網上的不少方法，仍是不行。

因而我卸載了python和yum，以爲本身從新安裝python和yum。

步驟1：卸載python

rpm -qa|grep python|xargs rpm -e --allmatches --nodeps

whereis python|xargs rm -fr

步驟2：卸載yum

rpm -qa|grep yum|xargs rpm -e --allmatches --nodeps

rm -rf /etc/yum.repos.d/*

whereis yum|xargs rm -fr

步驟3：安裝python

在任何一個鏡像站中找到你係統對應版本的python rpm包（個人是centos 6.9的64位系統，使用的鏡像是http://mirrors.163.com/centos/6.9/os/x86_64/Packages/）

mkdir /usr/local/src/python

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/python-2.6.6-66.el6_8.x86_64.rpm

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/python-pycurl-7.19.0-9.el6.x86_64.rpm

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/python-devel-2.6.6-66.el6_8.x86_64.rpm

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/python-libs-2.6.6-66.el6_8.x86_64.rpm

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/rpm-python-4.8.0-55.el6.x86_64.rpm

 

切換到/usr/local/src/python路徑下

rpm -ivh python-*   rpm-python-*

若是中間過程出現了相似下面的代碼，這是包與包之間的依賴關係，只須要卸載已經安裝的包（rpm -e 包名（沒有.rpm後綴）），而後先安裝依賴包

如：

rpm -e yum-metadata-parser-1.1.2-16.el6.x86_64

       rpm -ivh /yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

步驟4：安裝yum

mkdir /usr/local/src/yum

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm  

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm  

wget http://mirrors.163.com/centos/6.9/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-40.el6.noarch.rpm

切換到/usr/local/src/python路徑下

rpm -ivh yum-*

步驟5：測試

運行

yum

（成功）