I encountered this problem when installing mmdetection3D today, mainly when installing the mim toolkit, the following problem popped up
ERROR: Could not install packages due to an OSError: [WinError 5] 拒绝访问。: 'c:\\programdata\\anaconda3\\envs\\open-mmlab\\lib\\site-packages\\__pycache__\\typing_extensions.cpython-37.pyc' Consider using the – user option or check the permissions.
It should be a permission problem, add –user to solve it
, that is, the original command is pip install openmim
now used:pip install --user openmim