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Python: Fix context duplication in handoff workflows when restoring from checkpoint (#2867)

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* Fix context duplication in handoff workflows when restoring from checkpoint

* Address Copilot PR review
This commit is contained in:
Evan Mattson
2025-12-16 18:52:59 +09:00
committed by GitHub
Unverified
parent 11d6dcfe80
commit 958a488f96
3 changed files with 493 additions and 24 deletions
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python/samples/getting_started/workflows/checkpoint/handoff_with_tool_approval_checkpoint_resume.py
+12 -10
View File
@@ -122,11 +122,17 @@ def _print_handoff_request(request: HandoffUserInputRequest, request_id: str) ->
print(f"Awaiting agent: {request.awaiting_agent_id}")
print(f"Prompt: {request.prompt}")
print("\nConversation so far:")
for msg in request.conversation[-3:]:
author = msg.author_name or msg.role.value
snippet = msg.text[:120] + "..." if len(msg.text) > 120 else msg.text
print(f" {author}: {snippet}")
# Note: After checkpoint restore, conversation may be empty because it's not serialized
# to prevent duplication (the conversation is preserved in the coordinator's state).
# See issue #2667.
if request.conversation:
print("\nConversation so far:")
for msg in request.conversation[-3:]:
author = msg.author_name or msg.role.value
snippet = msg.text[:120] + "..." if len(msg.text) > 120 else msg.text
print(f" {author}: {snippet}")
else:
print("\n(Conversation restored from checkpoint - context preserved in workflow state)")
print(f"{'=' * 60}\n")
@@ -273,11 +279,7 @@ async def resume_with_responses(
elif isinstance(event, WorkflowOutputEvent):
print("\n[Workflow Output Event - Conversation Update]")
if (
event.data
and isinstance(event.data, list)
and all(isinstance(msg, ChatMessage) for msg in event.data)
):
if event.data and isinstance(event.data, list) and all(isinstance(msg, ChatMessage) for msg in event.data):
# Now safe to cast event.data to list[ChatMessage]
conversation = cast(list[ChatMessage], event.data)
for msg in conversation[-3:]: # Show last 3 messages