pip安装错误，解决办法如下（特别注意-i 参数不能少，后面的地址可以是其他的仓库地址）：
(base) PS E:\DeepLearning> pip install pycocotools -i /simple/
Looking in indexes: /simple/
Collecting pycocotools
Obtaining dependency information for pycocotools from /packages/24/b2/ef28a34cf6ca50b6b2f7ad81e5837ed45c252ffef22f5a704b94141ea842/pycocotools-2.0.7-cp311-cp311-win_amd64.
Downloading pycocotools-2.0.7-cp311-cp311-win_amd64. (1.1 kB)