init() — langchain Function Reference

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

Function python Observability TelemetryUtilities

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Observability→ TelemetryUtilities→ __init__() — langchain Function Reference

Dependency Diagram

graph TD
  fb255192_5aed_e5e5_8ecd_b7e483ab04e3["__init__()"]
  24bc19d6_d1f4_bd59_6fc4_6ef5b08a4d41["BaseCallbackManager"]
  fb255192_5aed_e5e5_8ecd_b7e483ab04e3 -->|defined in| 24bc19d6_d1f4_bd59_6fc4_6ef5b08a4d41
  style fb255192_5aed_e5e5_8ecd_b7e483ab04e3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/callbacks/base.py lines 901–931

    def __init__(
        self,
        handlers: list[BaseCallbackHandler],
        inheritable_handlers: list[BaseCallbackHandler] | None = None,
        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 callback manager.

        Args:
            handlers: The handlers.
            inheritable_handlers: The inheritable handlers.
            parent_run_id: The parent run ID.
            tags: The tags.
            inheritable_tags: The inheritable tags.
            metadata: The metadata.
            inheritable_metadata: The inheritable metadata.
        """
        self.handlers: list[BaseCallbackHandler] = handlers
        self.inheritable_handlers: list[BaseCallbackHandler] = (
            inheritable_handlers or []
        )
        self.parent_run_id: UUID | None = parent_run_id
        self.tags = tags or []
        self.inheritable_tags = inheritable_tags or []
        self.metadata = metadata or {}
        self.inheritable_metadata = inheritable_metadata or {}