python配置yum源

import subprocess

import sys

import os

def main():

    try:

        subprocess.call(["yum install wget -y;cd /etc/yum.repos.d/ && mkdir repo_bak && mv *.repo repo_bak/"], shell=True)

        subprocess.call(["wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo"], shell=True)

        subprocess.call(["yum clean all && yum makecache && yum repolist"], shell=True)

        sys.exit(0)

    except Exception as e:

        print(e)

        sys.exit(1)

if __name__ == '__main__':

    main()