_call() — langchain Function Reference

Architecture documentation for the _call() function in llm_router.py from the langchain codebase.

Function python AgentOrchestration ClassicChains calls 1

Entity Profile

AgentOrchestration→ ClassicChains→ _call() — langchain Function Reference

Dependency Diagram

graph TD
  87ccce0a_1b7e_e8ff_7889_acaf7978975c["_call()"]
  6583c2eb_e73e_04a5_2dfe_d3e26b9ec1eb["LLMRouterChain"]
  87ccce0a_1b7e_e8ff_7889_acaf7978975c -->|defined in| 6583c2eb_e73e_04a5_2dfe_d3e26b9ec1eb
  066a3cee_7375_f828_5dd4_9fcf318aa904["parse()"]
  87ccce0a_1b7e_e8ff_7889_acaf7978975c -->|calls| 066a3cee_7375_f828_5dd4_9fcf318aa904
  style 87ccce0a_1b7e_e8ff_7889_acaf7978975c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/chains/router/llm_router.py lines 129–141

    def _call(
        self,
        inputs: dict[str, Any],
        run_manager: CallbackManagerForChainRun | None = None,
    ) -> dict[str, Any]:
        _run_manager = run_manager or CallbackManagerForChainRun.get_noop_manager()
        callbacks = _run_manager.get_child()

        prediction = self.llm_chain.predict(callbacks=callbacks, **inputs)
        return cast(
            "dict[str, Any]",
            self.llm_chain.prompt.output_parser.parse(prediction),
        )