invoke() — langchain Function Reference

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

Function python LangChainCore Runnables called by 3

Entity Profile

LangChainCore→ Runnables→ invoke() — langchain Function Reference

Dependency Diagram

graph TD
  e2ca1dd3_4ae9_2ab3_37d2_60242857703f["invoke()"]
  4a62481c_02cb_a5de_1833_50669d5351a6["Runnable"]
  e2ca1dd3_4ae9_2ab3_37d2_60242857703f -->|defined in| 4a62481c_02cb_a5de_1833_50669d5351a6
  2826dfcf_5024_bd4d_0268_8f909fbbae0c["batch()"]
  2826dfcf_5024_bd4d_0268_8f909fbbae0c -->|calls| e2ca1dd3_4ae9_2ab3_37d2_60242857703f
  233d5f85_2b64_14ea_50c5_ade4d2be2873["batch_as_completed()"]
  233d5f85_2b64_14ea_50c5_ade4d2be2873 -->|calls| e2ca1dd3_4ae9_2ab3_37d2_60242857703f
  66bfa0c6_f60c_67bd_cbc1_53b945547106["stream()"]
  66bfa0c6_f60c_67bd_cbc1_53b945547106 -->|calls| e2ca1dd3_4ae9_2ab3_37d2_60242857703f
  style e2ca1dd3_4ae9_2ab3_37d2_60242857703f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/runnables/base.py lines 822–842

    def invoke(
        self,
        input: Input,
        config: RunnableConfig | None = None,
        **kwargs: Any,
    ) -> Output:
        """Transform a single input into an output.

        Args:
            input: The input to the `Runnable`.
            config: A config to use when invoking the `Runnable`.

                The config supports standard keys like `'tags'`, `'metadata'` for
                tracing purposes, `'max_concurrency'` for controlling how much work to
                do in parallel, and other keys.

                Please refer to `RunnableConfig` for more details.

        Returns:
            The output of the `Runnable`.
        """