# get_from_param_or_env

> **Function** in `langchain_upstage`

📖 [View in docs](https://reference.langchain.com/python/langchain-upstage/utils/value_retriever/get_from_param_or_env)

Get a value from a param or an environment variable.

## Signature

```python
get_from_param_or_env(
    key: str,
    param: Optional[str] = None,
    env_key: Optional[str] = None,
    default: Optional[str] = None,
) -> str
```

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[View source on GitHub](https://github.com/langchain-ai/langchain-upstage/blob/5723c8d5fdccbe69fb3567f95a6e0904a9af1d34/libs/upstage/langchain_upstage/utils/value_retriever.py#L5)