_acall() — langchain Function Reference

Architecture documentation for the _acall() function in llms.py from the langchain codebase.

Function python LangChainCore LanguageModelBase called by 1

Entity Profile

LangChainCore→ LanguageModelBase→ _acall() — langchain Function Reference

Dependency Diagram

graph TD
  a27ba324_f950_5f71_c654_3c089ef7f49a["_acall()"]
  b2c7d2a5_0852_93df_c3e1_828c36a88999["LLM"]
  a27ba324_f950_5f71_c654_3c089ef7f49a -->|defined in| b2c7d2a5_0852_93df_c3e1_828c36a88999
  ffe354d9_4df1_2cd5_e12d_ff4ee146557e["_agenerate()"]
  ffe354d9_4df1_2cd5_e12d_ff4ee146557e -->|calls| a27ba324_f950_5f71_c654_3c089ef7f49a
  style a27ba324_f950_5f71_c654_3c089ef7f49a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/language_models/llms.py lines 1455–1491

    async def _acall(
        self,
        prompt: str,
        stop: list[str] | None = None,
        run_manager: AsyncCallbackManagerForLLMRun | None = None,
        **kwargs: Any,
    ) -> str:
        """Async version of the _call method.

        The default implementation delegates to the synchronous _call method using
        `run_in_executor`. Subclasses that need to provide a true async implementation
        should override this method to reduce the overhead of using `run_in_executor`.

        Args:
            prompt: The prompt to generate from.
            stop: Stop words to use when generating.

                Model output is cut off at the first occurrence of any of these
                substrings.

                If stop tokens are not supported consider raising `NotImplementedError`.
            run_manager: Callback manager for the run.
            **kwargs: Arbitrary additional keyword arguments.

                These are usually passed to the model provider API call.

        Returns:
            The model output as a string. SHOULD NOT include the prompt.
        """
        return await run_in_executor(
            None,
            self._call,
            prompt,
            stop,
            run_manager.get_sync() if run_manager else None,
            **kwargs,
        )