安裝完python2.7.11後用了幾天挺好，但是今天用yum的時候發現了問題
[root@template yum.repos.d]# yum list
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:
2.7.11 (default, Apr 7 2016, 21:10:55)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-16)]
If you cannot solve this problem yourself, please go to
the yum faq at:
http://yum.baseurl.org/wiki/Faq
上網查了一下才知道原來yum是需要python環境的，python2.7.11太新了，需要改回舊的版本
which yum
whereis python
vim /usr/bin/yum
將#!/usr/bin/python 改爲#!/usr/bin/python2.6