# is_mapping_t

> **Function** in `langsmith`

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

## Signature

```python
is_mapping_t(
    obj: _MappingT | object,
) -> TypeGuard[_MappingT]
```

---

[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/d6cd6082f09e7826a2d6afe444ae6119e61b82a6/python/langsmith/_openapi_client/_utils/_utils.py#L190)