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最近在centos7下执行命令时，出现以下提示： DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. More details abou

pip国内的一些镜像   阿里云http://mirrors.aliyun.com/pypi/simple/   中国科技大学https://pypi.mirrors.ustc.edu.cn/simple/   豆瓣(douban)http://pypi.douban.com/simple/   清华大学https://pypi.tuna.tsinghua.edu.cn/simple/   中国科学技术大学http://pypi.mirrors.ustc.edu.cn/simple/ ...