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
  80d69b6b_733a_5c3d_3088_80cbf31bd620["__init__()"]
  e8e02bb6_9351_3319_8aa4_a7ab69181c15["BaseRunManager"]
  80d69b6b_733a_5c3d_3088_80cbf31bd620 -->|defined in| e8e02bb6_9351_3319_8aa4_a7ab69181c15
  style 80d69b6b_733a_5c3d_3088_80cbf31bd620 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/callbacks/manager.py lines 460–492

    def __init__(
        self,
        *,
        run_id: UUID,
        handlers: list[BaseCallbackHandler],
        inheritable_handlers: list[BaseCallbackHandler],
        parent_run_id: UUID | None = None,
        tags: list[str] | None = None,
        inheritable_tags: list[str] | None = None,
        metadata: dict[str, Any] | None = None,
        inheritable_metadata: dict[str, Any] | None = None,
    ) -> None:
        """Initialize the run manager.

        Args:
            run_id: The ID of the run.
            handlers: The list of handlers.
            inheritable_handlers: The list of inheritable handlers.
            parent_run_id: The ID of the parent run.
            tags: The list of tags.
            inheritable_tags: The list of inheritable tags.
            metadata: The metadata.
            inheritable_metadata: The inheritable metadata.

        """
        self.run_id = run_id
        self.handlers = handlers
        self.inheritable_handlers = inheritable_handlers
        self.parent_run_id = parent_run_id
        self.tags = tags or []
        self.inheritable_tags = inheritable_tags or []
        self.metadata = metadata or {}
        self.inheritable_metadata = inheritable_metadata or {}