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Command "python setup.py egg_info" failed with error code 1 in You are using pip version 9.0.1, however version 18.1 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' comm and.
不是吧，我才安装了几个月而已。于是先以管理员身份运行cmd，再按照提示：
python -m pip install --upgrade pip
程序自动卸载9.0.1，安装了18.1
