centos7安装pip并修改pip源，修改yum源

修改yum源 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo sudo yum clean all sudo yum makecache sudo yum repolist 安装pip sudo yum -y install epel-release sudo yum i

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