# LoggingCallbackHandler

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/callbacks/tracers/logging/LoggingCallbackHandler)

Tracer that logs via the input Logger.

## Signature

```python
LoggingCallbackHandler(
    self,
    logger: logging.Logger,
    log_level: int = logging.INFO,
    extra: dict | None = None,
    **kwargs: Any = {},
)
```

## Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `logger` | `logging.Logger` | Yes | the logger to use for logging |
| `log_level` | `int` | No | the logging level (default: logging.INFO) (default: `logging.INFO`) |
| `extra` | `dict \| None` | No | the extra context to log (default: None) (default: `None`) |
| `**kwargs` | `Any` | No | additional keyword arguments. (default: `{}`) |

## Extends

- `FunctionCallbackHandler`

## Constructors

```python
__init__(
    self,
    logger: logging.Logger,
    log_level: int = logging.INFO,
    extra: dict | None = None,
    **kwargs: Any = {},
) -> None
```

| Name | Type |
|------|------|
| `logger` | `logging.Logger` |
| `log_level` | `int` |
| `extra` | `dict \| None` |


## Properties

- `name`

## Methods

- [`on_text()`](https://reference.langchain.com/python/langchain-classic/callbacks/tracers/logging/LoggingCallbackHandler/on_text)

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/8fec4e7ceee2c368b068c49f9fed453276e210e7/libs/langchain/langchain_classic/callbacks/tracers/logging.py#L13)