https://pytorch.org/tutorials/
pip3 install torch torchvision torchaudio
install pytorch first
install yolo dep:
pip install -r requirements.txt -i https://mirrors.aliyun.com/pypi/simple/
install image label tool:
pip3 install labelImg -i https://mirrors.aliyun.com/pypi/simple/
python train.py --img 640 --epochs 3 --data coco128.yaml --weights yolov5s.pt
look at yolo.py