# StrEnum

> **Class** in `langgraph`

📖 [View in docs](https://reference.langchain.com/python/langgraph/_internal/_runnable/StrEnum)

A string enum.

## Signature

```python
StrEnum()
```

## Extends

- `str`
- `enum.Enum`

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/95af6a00718588e7b7ce17310e8006d267896a77/libs/langgraph/langgraph/_internal/_runnable.py#L136)