from: http://www.cnblogs.com/voll/p/5940298.html
root用户使用yum install -y python-pip 时会报如下错误:
No package python-pip available
Error:Nothing to do
解决方法如下:
首先安装epel扩展源:
yum -y install epel-release
更新完成之后,就可安装pip:
yum -y install python-pip
安装完成之后清除cache:
yum clean all