解决方法输入pip3 install –indexurl https://pypi.douban.com/simple requests

出现:WARNING: You are using pip version 19.2.3, however version 20.1 is available.
You should consider upgrading via the ‘pythonm pip installupgrade pipcommand.

再次输入pythonm pip install —upgrade pip –indexurl https://pypi.douban.com/simple requests

成功安装

Installing collected packages: pip
  Found existing installation: pip 19.2.3
    Uninstalling pip-19.2.3:
      Successfully uninstalled pip-19.2.3
Successfully installed pip-20.1
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原文链接https://blog.csdn.net/FormZeroToOne/article/details/106174573

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