# read_channel

> **Function** in `langgraph`

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

## Signature

```python
read_channel(
    channels: Mapping[str, BaseChannel],
    chan: str,
    *,
    catch: bool = True,
) -> Any
```

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[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/644815f9e5bc52ad8f7a5227a456227e9c3e639b/libs/langgraph/langgraph/pregel/_io.py#L23)