--- description: Explore the Ultralytics YOLO v3 data build procedures, including the InfiniteDataLoader, seed_worker, build_dataloader, and load_inference_source. keywords: Ultralytics, YOLO v3, Data build, DataLoader, InfiniteDataLoader, seed_worker, build_dataloader, load_inference_source --- # Reference for `ultralytics/data/build.py` !!! Note This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/data/build.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/data/build.py). If you spot a problem please help fix it by [contributing](/help/contributing.md) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/data/build.py) 🛠️. Thank you 🙏!

## ::: ultralytics.data.build.InfiniteDataLoader

## ::: ultralytics.data.build._RepeatSampler

## ::: ultralytics.data.build.seed_worker

## ::: ultralytics.data.build.build_yolo_dataset

## ::: ultralytics.data.build.build_grounding

## ::: ultralytics.data.build.build_dataloader

## ::: ultralytics.data.build.check_source

## ::: ultralytics.data.build.load_inference_source