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    Pythonlangchain-classicsmithevaluationstring_run_evaluatorChainStringRunMapperinput_key
    Attribute●Since v1.0

    input_key

    The key from the model Run's inputs to use as the eval input. If not provided, will use the only input key or raise an error if there are multiple.

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    input_key: str | None = None
    View source on GitHub