将centos 部分程序更新了下，发现再次执行yum 的时候提示 No module named yum

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出错提示

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

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查找资料后说是python 版本的问题。

[root@clients ~]# python --version

Python 2.6.5

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[root@clients ~]# whereis python

python: /usr/src/Python-2.6.5/python /usr/bin/python2.4 /usr/bin/python2.6 /usr/bin/python /usr/bin/python2.6-config /usr/lib/python2.4 /usr/lib/python2.6 /usr/local/bin/python2.6 /usr/local/bin/python /usr/local/bin/python2.6-config /usr/local/lib/python2.6
/usr/include/python2.4 /usr/include/python2.6 /usr/share/man/man1/python.1.gz /usr/share/man/man1/python.1

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解决办法

修改yum文件

#vi /usr/bin/yum

将 #!/usr/bin/python 修改为 #!/usr/bin/python2.4

再次运行yum，一切正常！