No module named yum 解决办法

https://www.centos.org/forums/viewtopic.php?t=18383

yum出现如下问题的处理方法：

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[root@localhost ~]# yum update
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

No module named yum

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.7 (r27:82500, Aug 24 2012, 08:08:08)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-52)]

If you cannot solve this problem yourself, please go to
the yum faq at:
http://wiki.linux.duke.edu/YumFaq

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解决办法

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download this rpm

python-2.4.3-46.el5_8.2.i386.rpm 
python-devel-2.4.3-46.el5_8.2.i386.rpm 
python-libs-2.4.3-46.el5_8.2.i386.rpm 
python-tools-2.4.3-46.el5_8.2.i386.rpm 
tix-8.4.0-11.fc6.i386.rpm
tix-devel-8.4.0-11.fc6.i386.rpm
tkinter-2.4.3-46.el5_8.2.i386.rpm
yum-3.2.22-39.el5.centos.noarch.rpm

http://mirror.centos.org/centos/5/os/i386/CentOS/

[root@localhost x]# ls
python-2.4.3-46.el5_8.2.i386.rpm tix-8.4.0-11.fc6.i386.rpm
python-devel-2.4.3-46.el5_8.2.i386.rpm tix-devel-8.4.0-11.fc6.i386.rpm
python-libs-2.4.3-46.el5_8.2.i386.rpm tkinter-2.4.3-46.el5_8.2.i386.rpm
python-tools-2.4.3-46.el5_8.2.i386.rpm yum-3.2.22-39.el5.centos.noarch.rpm

[root@localhost x]# rpm -Uvh --replacepkgs *.rpm
Preparing... ########################################### [100%]
1:tix ########################################### [ 13%]
2:tix-devel ########################################### [ 25%]
3:python ########################################### [ 38%]
4:tkinter ########################################### [ 50%]
5:python-devel ########################################### [ 63%]
6:python-libs ########################################### [ 75%]
7:python-tools ########################################### [ 88%]
8:yum ########################################### [100%]
[root@localhost x]# yum update