命令：yum install -y python-pip
错误一：提示No package python-pip available.Error: Nothing to do
解决：
a、yum -y install epel-release
b、rpm -ivh /pub/epel/6/i386/epel-release-6-8.noarch.rpm
错误二：提示以下报错信息（用于python2.6但是系统python版本是2.7）
Error: Package: python-pip-7.1.0-1.el6.noarch (epel)Requires: python(abi) = 2.6Installed: python-2.7.5-34.el7.x86_64 (@anaconda)python(abi) = 2.7python(abi) = 2.7Available: python-2.7.5-76.el7.x86_64 (base)python(abi) = 2.7python(abi) = 2.7Available: python-2.7.5-77.el7_6.x86_64 (updates)python(abi) = 2.7python(abi) = 2.7Available: python34-3.4.8-1.el6.i686 (epel)python(abi) = 3.4You could try using --skip-broken to work around the problemYou could try running: rpm -Va --nofiles --nodigest
解决：
yum clean all
rpm --rebuilddb
yum update
然后删掉之前的epel-release：yum remove epel-release
重新安装：yum -y install epel-release
再执行命令：yum install -y python-pip
