getattr() — langchain Function Reference

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

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ __getattr__() — langchain Function Reference

Dependency Diagram

graph TD
  92e17b9f_11a3_1cdd_043f_0b7e50cdfd0e["__getattr__()"]
  1ad7446c_5ef5_eeb3_2fc5_22a110a58b17["RunnableBinding"]
  92e17b9f_11a3_1cdd_043f_0b7e50cdfd0e -->|defined in| 1ad7446c_5ef5_eeb3_2fc5_22a110a58b17
  style 92e17b9f_11a3_1cdd_043f_0b7e50cdfd0e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/runnables/base.py lines 6103–6137

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

        if callable(attr) and (
            config_param := inspect.signature(attr).parameters.get("config")
        ):
            if config_param.kind == inspect.Parameter.KEYWORD_ONLY:

                @wraps(attr)
                def wrapper(*args: Any, **kwargs: Any) -> Any:
                    return attr(
                        *args,
                        config=merge_configs(self.config, kwargs.pop("config", None)),
                        **kwargs,
                    )

                return wrapper
            if config_param.kind == inspect.Parameter.POSITIONAL_OR_KEYWORD:
                idx = list(inspect.signature(attr).parameters).index("config")

                @wraps(attr)
                def wrapper(*args: Any, **kwargs: Any) -> Any:
                    if len(args) >= idx + 1:
                        argsl = list(args)
                        argsl[idx] = merge_configs(self.config, argsl[idx])
                        return attr(*argsl, **kwargs)
                    return attr(
                        *args,
                        config=merge_configs(self.config, kwargs.pop("config", None)),
                        **kwargs,
                    )

                return wrapper

        return attr