错误描述:You are using pip version 19.0.3, however version 19.1.1 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command.
解决办法:直接运行 python -m pip install --upgrade pip 命令
错误描述:You are using pip version 19.0.3, however version 19.1.1 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command.
解决办法:直接运行 python -m pip install --upgrade pip 命令