stream() — langchain Function Reference

Architecture documentation for the stream() function in fake.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ stream() — langchain Function Reference

Dependency Diagram

graph TD
  b23760d3_57ca_2e73_110b_8e100bf39538["stream()"]
  e7a8ec35_0102_1c07_7999_79d89f0901d2["FakeStreamingListLLM"]
  b23760d3_57ca_2e73_110b_8e100bf39538 -->|defined in| e7a8ec35_0102_1c07_7999_79d89f0901d2
  style b23760d3_57ca_2e73_110b_8e100bf39538 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/language_models/fake.py lines 98–116

    def stream(
        self,
        input: LanguageModelInput,
        config: RunnableConfig | None = None,
        *,
        stop: list[str] | None = None,
        **kwargs: Any,
    ) -> Iterator[str]:
        result = self.invoke(input, config)
        for i_c, c in enumerate(result):
            if self.sleep is not None:
                time.sleep(self.sleep)

            if (
                self.error_on_chunk_number is not None
                and i_c == self.error_on_chunk_number
            ):
                raise FakeListLLMError
            yield c