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__call__() — langchain Function Reference

Architecture documentation for the __call__() function in chain.py from the langchain codebase.

Entity Profile

Dependency Diagram

graph TD
  1e509cf1_5bdf_32f2_00f1_7fa1cc2b2eae["__call__()"]
  6401fee1_b148_641e_a1a4_002482507941["LoadingCallable"]
  1e509cf1_5bdf_32f2_00f1_7fa1cc2b2eae -->|defined in| 6401fee1_b148_641e_a1a4_002482507941
  style 1e509cf1_5bdf_32f2_00f1_7fa1cc2b2eae fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/langchain/langchain_classic/chains/question_answering/chain.py lines 35–40

    def __call__(
        self,
        llm: BaseLanguageModel,
        **kwargs: Any,
    ) -> BaseCombineDocumentsChain:
        """Callable to load the combine documents chain."""

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Frequently Asked Questions

What does __call__() do?
__call__() is a function in the langchain codebase, defined in libs/langchain/langchain_classic/chains/question_answering/chain.py.
Where is __call__() defined?
__call__() is defined in libs/langchain/langchain_classic/chains/question_answering/chain.py at line 35.

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