# StringDistance

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/evaluation/string_distance/base/StringDistance)

Distance metric to use.

## Signature

```python
StringDistance()
```

## Extends

- `str`
- `Enum`

## Properties

- `DAMERAU_LEVENSHTEIN`
- `LEVENSHTEIN`
- `JARO`
- `JARO_WINKLER`
- `HAMMING`
- `INDEL`

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/02991cb4cf2063d51a07268edafb05fe53de1826/libs/langchain/langchain_classic/evaluation/string_distance/base.py#L41)