# StreamPart

> **Class** in `langgraph_sdk`

📖 [View in docs](https://reference.langchain.com/python/langgraph-sdk/schema/StreamPart)

Represents a part of a stream response.

## Signature

```python
StreamPart()
```

## Extends

- `NamedTuple`

## Properties

- `event`
- `data`
- `id`

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/b674dd46228b0928a6bc0ad9a3d8e38ef28f6895/libs/sdk-py/langgraph_sdk/schema.py#L595)