# RunLog

> **Class** in `langchain_core`

📖 [View in docs](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunLog)

Run log.

## Signature

```python
RunLog(
    self,
    ops: dict[str, Any] = (),
    *,
    state: RunState,
)
```

## Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `*ops` | `dict[str, Any]` | No | The operations to apply to the state. (default: `()`) |
| `state` | `RunState` | Yes | The initial state of the run log. |

## Extends

- `RunLogPatch`

## Constructors

```python
__init__(
    self,
    ops: dict[str, Any] = (),
    *,
    state: RunState,
) -> None
```

| Name | Type |
|------|------|
| `ops` | `dict[str, Any]` |
| `state` | `RunState` |


## Properties

- `state`

---

[View source on GitHub](https://github.com/langchain-ai/langchain/blob/f40f58d50499700f98051be6bb610bee5dd11cc2/libs/core/langchain_core/tracers/log_stream.py#L168)