原因：pip版本过低导致安装第三方库失败。
解决办法：更新pip版本
方案一：执行命令easy_install -U pip
方案二：若方案一失败，则可采用国内源下载更新。执行命令：python -m pip install --upgrade pip -i https://pypi.douban.com/simple
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【pycharm】Python pip升级及升级失败解决方案，报错：You are using pip version 10.0.1, however version 21.3.1 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command.
解决You should consider upgrading via the 'python -m pip install --upgrade pip' command.
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