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@github-actions github-actions released this 02 Apr 14:01
0.3.23
55f922c
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langgraph 0.3.23

Summary of Changes

  • Added a special REMOVE_ALL_MESSAGES identifier to allow clearing all messages in a MessageGraph conversation in one operation #4117
  • Moved empty_checkpoint function from being imported from a base module to being defined in the pregel checkpoint module #4126

Detailed Changes

langgraph.graph.message.add_messages

  • Added a special REMOVE_ALL_MESSAGES constant identifier ("__remove_all__")
  • Enhanced the message merging logic to detect when a RemoveMessage with this special ID is included
  • When this special removal message is detected, all previous messages are discarded and only messages after this special message are returned
  • This provides a convenient way to clear an entire conversation history in one operation #4117

langgraph.pregel.checkpoint.empty_checkpoint

  • Moved the function definition from being imported from langgraph.checkpoint.base to being directly defined in langgraph.pregel.checkpoint
  • Redefined LATEST_VERSION = 2 in the same module
  • Updated imports in relevant files to reference the new location
  • No change in functionality, purely a code organization improvement #4126
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