**pip安装三方库不成功:WARNING: You are using pip version 20.3.1; however, version 20.3.3 is available.**

pip安装三方库不成功:WARNING: You are using pip version 20.3.1; however, version 20.3.3 is available.

原因:pip版本过低导致安装第三方库失败

解决方法:
python.exe -m pip install --upgrade pip

在操作过程中会出现下载更新到一半就出错
多试几次就OK了,可能和网络有关系

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