_call() — langchain Function Reference

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

Function python AgentOrchestration ClassicChains

Entity Profile

AgentOrchestration→ ClassicChains→ _call() — langchain Function Reference

Dependency Diagram

graph TD
  2a6cded1_052c_4c8e_d2e6_a5e53382a416["_call()"]
  9171cff6_74d4_b785_eb4e_31a83af8c002["NatBotChain"]
  2a6cded1_052c_4c8e_d2e6_a5e53382a416 -->|defined in| 9171cff6_74d4_b785_eb4e_31a83af8c002
  style 2a6cded1_052c_4c8e_d2e6_a5e53382a416 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/chains/natbot/base.py lines 113–132

    def _call(
        self,
        inputs: dict[str, str],
        run_manager: CallbackManagerForChainRun | None = None,
    ) -> dict[str, str]:
        _run_manager = run_manager or CallbackManagerForChainRun.get_noop_manager()
        url = inputs[self.input_url_key]
        browser_content = inputs[self.input_browser_content_key]
        llm_cmd = self.llm_chain.invoke(
            {
                "objective": self.objective,
                "url": url[:100],
                "previous_command": self.previous_command,
                "browser_content": browser_content[:4500],
            },
            config={"callbacks": _run_manager.get_child()},
        )
        llm_cmd = llm_cmd.strip()
        self.previous_command = llm_cmd
        return {self.output_key: llm_cmd}