# Node

> **Class** in `langchain_core`

📖 [View in docs](https://reference.langchain.com/python/langchain-core/runnables/graph/Node)

Node in a graph.

## Signature

```python
Node()
```

## Extends

- `NamedTuple`

## Properties

- `id`
- `name`
- `data`
- `metadata`

## Methods

- [`copy()`](https://reference.langchain.com/python/langchain-core/runnables/graph/Node/copy)

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/51e954877efd2d2c3c5bf09364dcfec8794eadb0/libs/core/langchain_core/runnables/graph.py#L93)