# 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
```

---

[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/d27d4b2d9895a4aa83170b4aaa135878f99c7fd6/libs/langgraph/langgraph/pregel/_io.py#L23)