报错如下:Could not install packages due to an OSError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url: /packages/c0/8f/dfa473f3a6241bff91ae8bb90
5bd0afceb827f37de2917a94b5c4b1112bf/Pillow-9.3.0-cp39-cp39-win_amd64.whl (Caused by ConnectTimeoutError(
nection to files.pythonhosted.org timed out. (connect timeout=15)'))
解决办法:命令换成pip install torchvision -i http://pypi.douban.com/simple --trusted-host pypi.douban.com