# FeedbackFormulaWeightedVariable

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/schemas/FeedbackFormulaWeightedVariable)

A feedback key and weight used when calculating feedback formulas.

## Signature

```python
FeedbackFormulaWeightedVariable()
```

## Extends

- `BaseModel`

## Properties

- `part_type`
- `weight`
- `key`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/fcda9320ff067c3d3857e9e3d088fc1eb0643fc4/python/langsmith/schemas.py#L1548)