You are using pip version 8.1.2, however version 18.0 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
解决方法:
python -m pip install -U --force-reinstall pip
You are using pip version 8.1.2, however version 18.0 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
解决方法:
python -m pip install -U --force-reinstall pip