2017年8月

把CentOS6.5默认的python2.6升级到了python2.7,然后运行yum命令的时候就出现了错误:

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:
2.7.13 (default, Aug 18 2017, 21:52:09) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-18)]
If you cannot solve this problem yourself, please go to 
the yum faq at:
  http://yum.baseurl.org/wiki/Faq

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