No module named yum 错误

在centos上,yum工具是一个很好用、很强大的工具,在系统一些软件升级之后,特别是python升级之后,发现yum 不好用了。

出现这样的错误提示

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

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:
2.7.2 (default, Nov  8 2012, 23:03:00) 
[GCC 4.1.2 20080704 (Red Hat 4.1.2-48)]

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

错误提示python版本不匹配,修改yum工具默认的python版本。

vi /usr/bin/yum
打开脚本文件

#!/usr/bin/python
import sys
try:
    import yum
。。。。。。。
修改为

#!/usr/bin/python2.4
import sys
try:
    import yum
except ImportError:
因为重新升级或者安装了python,所以重新指定版本。


测试OK。

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