from ultralytics import YOLO

# Load a pretrained YOLO model (recommended for training)
model = YOLO('yolov8l.pt')

results = model.train(data='path_to_data/data.yaml', epochs=3)

# Evaluate the model's performance on the validation set
results = model.val()

# Perform object detection on an image using the model
results = model('path_to_test_image')

# Export the model to ONNX format
success = model.export(format='onnx')