0.2.46

langgraph 0.2.46

Summary of Changes

• Added add_sequence method to StateGraph for creating a linear sequence of nodes (#2352)
• Introduced GraphCommand class as a replacement for the deprecated Control class (#2352)
• Enhanced checkpointer handling in StateGraph.compile() to support explicitly disabling checkpointing with False (#2328)
• Improved checkpoint state management and handling of pending writes
• Better task handling in the Pregel execution engine

Detailed Changes

langgraph.graph.state.StateGraph

• Added new add_sequence() method to create linear sequences of nodes (#2352)
  • Accepts a sequence of nodes (runnables or callables) or (name, node) tuples
  • Automatically infers node names when not explicitly provided
  • Creates edges between nodes in the sequence
  • Returns self for method chaining
• Fixed return type annotations for add_node() and add_edge() methods to correctly show they return the StateGraph instance (#2352)
• Enhanced compile() method's checkpointer parameter (#2328):
  • Now accepts False to explicitly disable checkpointing
  • Better documentation for inheritance of checkpointers in subgraphs

langgraph.graph.state.GraphCommand

• New class that replaces the deprecated Control class (#2352)
• Used for directing graph flow and updating state
• Introduces goto parameter (replacing trigger from Control) for more semantic clarity
• Inherits from the base Command class and adds graph-specific functionality

langgraph.pregel.Pregel

• Improved handling of pending writes in state snapshots
• Enhanced application of pending writes when resuming from checkpoints
• Better task organization with path-based sorting

langgraph.pregel.algo.PregelTaskWrites

• Added path property to better track and organize task execution order
• Used for sorting tasks when applying writes