yum 删除epel-release并重新安装

    1.yum remove epel-release

    2.清空epel目录：rm -rf /var/cache/yum/x86_64/6/epel/

    3.安装，yum install  epel-release

pip install scrapy-redis -i  https://pypi.tuna.tsinghua.edu.cn/simple/     #安装python第三方插件：scrapy-redis

Linux_yum安装详解