invoke() — langchain Function Reference

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

Function python LangChainCore Runnables calls 1

Entity Profile

LangChainCore→ Runnables→ invoke() — langchain Function Reference

Dependency Diagram

graph TD
  b9269634_6373_b9ab_ca27_a9d9ad13d264["invoke()"]
  8e601be2_5eac_8426_f30d_f1ed37138bd8["RunnableGenerator"]
  b9269634_6373_b9ab_ca27_a9d9ad13d264 -->|defined in| 8e601be2_5eac_8426_f30d_f1ed37138bd8
  38807d67_690b_db51_4b6a_d357e2a415b0["stream()"]
  b9269634_6373_b9ab_ca27_a9d9ad13d264 -->|calls| 38807d67_690b_db51_4b6a_d357e2a415b0
  style b9269634_6373_b9ab_ca27_a9d9ad13d264 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/runnables/base.py lines 4354–4360

    def invoke(
        self, input: Input, config: RunnableConfig | None = None, **kwargs: Any
    ) -> Output:
        final: Output | None = None
        for output in self.stream(input, config, **kwargs):
            final = output if final is None else final + output  # type: ignore[operator]
        return cast("Output", final)