# default_preprocessing_func

> **Function** in `langchain_community`

📖 [View in docs](https://reference.langchain.com/python/langchain-community/retrievers/bm25/default_preprocessing_func)

## Signature

```python
default_preprocessing_func(
    text: str,
) -> List[str]
```

---

[View source on GitHub](https://github.com/langchain-ai/langchain-community/blob/a6a6079511ac8a5c1293337f88096b8641562e77/libs/community/langchain_community/retrievers/bm25.py#L11)