def fit(
        self,
        nodes: List[BaseNode],
        field: str,
        field_context: Optional[Any] = None,
        expected_output: Optional[Any] = None,
        inplace: bool = True,
    ) -> str:
        """Given the input Nodes and fields, synthesize the python code."""
Given the input Nodes and fields, synthesize the python code.
llama-index-integrations/program/llama-index-program-evaporate/llama_index/program/evaporate/base.py