Linux 下更新python 2．7用Wget一直是Not found

下好的centos 7，准备把Python 2.6更新到2．7，但是一直用wget报错not found，求助！

看看我安装的过程吧
http://blog.csdn.net/fk002008/article/details/50411042

http://blog.csdn.net/my2010sam/article/details/12156821

路径不正确了。直接用yum安装

http://blog.csdn.net/my2010sam/article/details/12156821