话说CentOS 6.4自带的Python版本是有点老了，2.6.6，我通过下载源码编译安装的方式升级到了2.7.9，不过弄好后，发现yum不好使了，提示以下错误： ``` required to run yum. The error leading to this problem was: No module named yum Please install a package wh 阅读全文...