升级python 到2.7 后引发的yum 不可用

由于yum 命令是依赖 python的，系统原自带的版本为2.4， 最近在学python 将版本升级到2.7后，发现yum 不可用了。 [oracle@cnode1 ~]$ yum 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: 解决方法：修改yum文件的版本，由于yum 命令是个python 程序， 改成python2.4 的环境变量就可以。 #vim /usr/bin/yum 将 #!/usr/bin/python 修改为  #!/usr/bin/python2.4  再次执行yum正常。 顺便P一下红帽，改升升级的就升升级了，别落后