离线安装需要五个
certifi-2019.9.11-py2.py3-none-any.whl chardet-3.0.4-py2.py3-none-any.whl idna-2.8-py2.py3-none-any.whl requests-2.22.0-py2.py3-none-any.whl urllib3-1.25.6-py2.py3-none-any.whl