init() — langchain Function Reference

Architecture documentation for the __init__() function in manager.py from the langchain codebase.

Function python Observability CallbackManager

Entity Profile

Observability→ CallbackManager→ __init__() — langchain Function Reference

Dependency Diagram

graph TD
  2c0b7984_7269_3962_d71d_4f8b0d857289["__init__()"]
  c39f1e6c_ff8b_15f7_1623_83b1b6b328ac["AsyncCallbackManagerForChainGroup"]
  2c0b7984_7269_3962_d71d_4f8b0d857289 -->|defined in| c39f1e6c_ff8b_15f7_1623_83b1b6b328ac
  style 2c0b7984_7269_3962_d71d_4f8b0d857289 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/callbacks/manager.py lines 2169–2194

    def __init__(
        self,
        handlers: list[BaseCallbackHandler],
        inheritable_handlers: list[BaseCallbackHandler] | None = None,
        parent_run_id: UUID | None = None,
        *,
        parent_run_manager: AsyncCallbackManagerForChainRun,
        **kwargs: Any,
    ) -> None:
        """Initialize the async callback manager.

        Args:
            handlers: The list of handlers.
            inheritable_handlers: The list of inheritable handlers.
            parent_run_id: The ID of the parent run.
            parent_run_manager: The parent run manager.
            **kwargs: Additional keyword arguments.
        """
        super().__init__(
            handlers,
            inheritable_handlers,
            parent_run_id,
            **kwargs,
        )
        self.parent_run_manager = parent_run_manager
        self.ended = False