# identifier

> **Function** in `langgraph`

📖 [View in docs](https://reference.langchain.com/python/langgraph/pregel/_call/identifier)

Return the module and name of an object.

## Signature

```python
identifier(
    obj: Any,
    name: str | None = None,
) -> str | None
```

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/eae916719fe78de2900bb7cd45c212fffd64f88b/libs/langgraph/langgraph/pregel/_call.py#L79)