# extract_response_type

> **Function** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/_openapi_client/_response/extract_response_type)

Given a type like `APIResponse[T]`, returns the generic type variable `T`.

This also handles the case where a concrete subclass is given, e.g.
```py
class MyResponse(APIResponse[bytes]):
    ...

extract_response_type(MyResponse) -> bytes
```

## Signature

```python
extract_response_type(
    typ: type[BaseAPIResponse[Any]],
) -> type
```

---

[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/d6cd6082f09e7826a2d6afe444ae6119e61b82a6/python/langsmith/_openapi_client/_response.py#L820)