scripts/download_models.py

from pathlib import Path

from ultralytics import YOLO

YOLO_DIR = Path(__file__).resolve().parents[1] / 'models' / 'yolo'
YOLO_DIR.mkdir(parents=True, exist_ok=True)

for name in ['yolov8n', 'yolov8s']:
    model = YOLO(f'{name}.pt')
    source = Path(getattr(model, 'ckpt_path', '') or '')
    target = YOLO_DIR / f'{name}.pt'
    if source.exists() and not target.exists():
        target.write_bytes(source.read_bytes())
    print(f'Ready: {target}')