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Fix datetime JSON serialization error in agentchat_fastapi samples #7075

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Fix datetime JSON serialization error in agentchat_fastapi samples #7075

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Copilot Oct 8, 2025
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Fix datetime JSON serialization error in agentchat_fastapi samples
Copilot Oct 8, 2025
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4 changes: 2 additions & 2 deletions python/samples/agentchat_fastapi/app_agent.py
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Original file line number Diff line number Diff line change
Expand Up @@ -88,8 +88,8 @@ async def chat(request: TextMessage) -> TextMessage:

# Save chat history to file.
history = await get_history()
history.append(request.model_dump())
history.append(response.chat_message.model_dump())
history.append(request.dump())
history.append(response.chat_message.dump())
async with aiofiles.open(history_path, "w") as file:
await file.write(json.dumps(history))

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4 changes: 2 additions & 2 deletions python/samples/agentchat_fastapi/app_team.py
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Expand Up @@ -121,10 +121,10 @@ async def _user_input(prompt: str, cancellation_token: CancellationToken | None)
async for message in stream:
if isinstance(message, TaskResult):
continue
await websocket.send_json(message.model_dump())
await websocket.send_json(message.dump())
if not isinstance(message, UserInputRequestedEvent):
# Don't save user input events to history.
history.append(message.model_dump())
history.append(message.dump())

# Save team state to file.
async with aiofiles.open(state_path, "w") as file:
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