LangChain Reference home pageLangChain ReferenceLangChain Reference
  • GitHub
  • Main Docs
Deep Agents
LangChain
LangGraph
Integrations
LangSmith
  • Overview
    • Overview
    • Graphs
    • Functional API
    • Pregel
    • Checkpointing
    • Storage
    • Caching
    • Types
    • Runtime
    • Config
    • Errors
    • Constants
    • Channels
    • Agents
    LangGraph Checkpoint
    Checkpoint Postgres
    Store Postgres
    Checkpoint SQLite
    LangGraph Prebuilt
    LangGraph CLI
    LangGraph SDK
    LangGraph Supervisor
    LangGraph Swarm
    ⌘I

    LangChain Assistant

    Ask a question to get started

    Enter to send•Shift+Enter new line

    Menu

    OverviewGraphsFunctional APIPregelCheckpointingStorageCachingTypesRuntimeConfigErrorsConstantsChannelsAgents
    LangGraph Checkpoint
    Checkpoint Postgres
    Store Postgres
    Checkpoint SQLite
    LangGraph Prebuilt
    LangGraph CLI
    LangGraph SDK
    LangGraph Supervisor
    LangGraph Swarm
    Language
    Theme
    PythonlanggraphchannelsdeltaDeltaChannelfrom_checkpoint
    Methodā—Since v1.1

    from_checkpoint

    Copy
    from_checkpoint(
        self,
        checkpoint: Any,
    ) -> Self
    View source on GitHub

    Initialize from a stored blob or sentinel.

    Blob types (dispatched via serde ext code, not dict key inspection):

    • DELTA_SENTINEL / MISSING: start empty; caller replays writes.
    • _DeltaSnapshot(value): restore value directly from snapshot.
    • plain value (migration from old BinOp blobs): use directly.