getattr() — langchain Function Reference

Architecture documentation for the __getattr__() function in configurable.py from the langchain codebase.

Function python LangChainCore Runnables calls 1

Entity Profile

LangChainCore→ Runnables→ __getattr__() — langchain Function Reference

Dependency Diagram

graph TD
  225301e6_e73c_25d0_7739_755d87cb7472["__getattr__()"]
  018f968f_f1d1_6f85_05f3_0ff4abc12150["DynamicRunnable"]
  225301e6_e73c_25d0_7739_755d87cb7472 -->|defined in| 018f968f_f1d1_6f85_05f3_0ff4abc12150
  e71e4d88_aaa7_d3d0_06ac_43f60d5cd48a["prepare()"]
  225301e6_e73c_25d0_7739_755d87cb7472 -->|calls| e71e4d88_aaa7_d3d0_06ac_43f60d5cd48a
  style 225301e6_e73c_25d0_7739_755d87cb7472 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/runnables/configurable.py lines 280–315

    def __getattr__(self, name: str) -> Any:  # type: ignore[misc]
        attr = getattr(self.default, name)
        if callable(attr):

            @wraps(attr)
            def wrapper(*args: Any, **kwargs: Any) -> Any:
                for key, arg in kwargs.items():
                    if key == "config" and (
                        isinstance(arg, dict)
                        and "configurable" in arg
                        and isinstance(arg["configurable"], dict)
                    ):
                        runnable, config = self.prepare(cast("RunnableConfig", arg))
                        kwargs = {**kwargs, "config": config}
                        return getattr(runnable, name)(*args, **kwargs)

                for idx, arg in enumerate(args):
                    if (
                        isinstance(arg, dict)
                        and "configurable" in arg
                        and isinstance(arg["configurable"], dict)
                    ):
                        runnable, config = self.prepare(cast("RunnableConfig", arg))
                        argsl = list(args)
                        argsl[idx] = config
                        return getattr(runnable, name)(*argsl, **kwargs)

                if self.config:
                    runnable, config = self.prepare()
                    return getattr(runnable, name)(*args, **kwargs)

                return attr(*args, **kwargs)

            return wrapper

        return attr