WARNING: You are using pip version 19.2.3, however version 20.1.1
python环境用pip安装文件的时候提示下面的文字，是什么原因？
WARNING: You are using pip version 19.2.3, however version 20.1.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
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这是提示你的python版本太低了，你可以运行下面的命令升级pip：
升级成功的提示是这样的，我把完整的过程复制出来给你参考：
C:\Users\Administrator>python -m pip install -U --force-reinstall pip Collecting pip Using cached https://files.pythonhosted.org/packages/43/84/23ed6a1796480a6f1a2d38f2802901d078266bda38388954d01d3f2e821d/pip-20.1.1-py2.py3-none-any.whl 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-20.1.1