centos系统重装python或yum 报There was a problem importing one of the Python modules required to run yum. The error leading to this problem was:错误

sudo vim /usr/bin/yum
 
#修个python所在的路径，例如
#/usr/local/bin/python2.6 或 /usr/local/bin/python2.7
要原本你的系统原装的是26还是2.7