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
  80a40ee0_1160_81fb_ae8c_9a0fbcd2057e["__init__()"]
  b12567d8_81a9_52c3_3096_d524d1371c83["CallbackManagerForChainGroup"]
  80a40ee0_1160_81fb_ae8c_9a0fbcd2057e -->|defined in| b12567d8_81a9_52c3_3096_d524d1371c83
  style 80a40ee0_1160_81fb_ae8c_9a0fbcd2057e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/callbacks/manager.py lines 1649–1675

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