# default

> **Function** in `langchain_core`

📖 [View in docs](https://reference.langchain.com/python/langchain-core/load/dump/default)

Return a default value for an object.

## Signature

```python
default(
    obj: Any,
) -> Any
```

## Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `obj` | `Any` | Yes | The object to serialize to json if it is a Serializable object. |

## Returns

`Any`

A JSON serializable object or a SerializedNotImplemented object.

---

[View source on GitHub](https://github.com/langchain-ai/langchain/blob/9f232caa7a8fe1ca042a401942d5d90d54ceb1a6/libs/core/langchain_core/load/dump.py#L29)