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LangGraph · Type Alias

PregelTask

prepare_single_task prepares one task for the next Pregel step. Its path identifies a PUSH or PULL task in the graph.

Last updated

Since
v1.2

Syntax

prepare_single_task(task_path: tuple[Any, ...], task_id_checksum: str | None, *, checkpoint: Checkpoint, tasks: Mapping[str, PregelNode], channels: Mapping[str, BaseChannel], managed: ManagedValueMapping, config: RunnableConfig, step: int, stop: int, for_execution: bool, store: BaseStore | None = None, checkpointer: BaseCheckpointSaver | None = None, manager: ParentRunManager | AsyncParentRunManager | None = None, input_cache: dict[INPUT_CACHE_KEY_TYPE, Any] | None = None, cache_policy: CachePolicy | None = None, retry_policy: Sequence[RetryPolicy] = ()) -> None | PregelTask | PregelExecutableTask

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • PregelTask
  • BaseChannel
  • PregelNode
  • StateSnapshot.tasks

Source: prepare_single_task | langgraph | LangChain Reference. Checked 2026-11-03.