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Python: fix(python): Use AgentResponse.value instead of model_validate_json in HITL sample #4405

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moonbox3 merged 2 commits into from
Mar 3, 2026
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Python: fix(python): Use AgentResponse.value instead of model_validate_json in HITL sample #4405

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fix(python): use AgentResponse.value instead of model_validate_json i…
LEDazzio01 Mar 2, 2026
a76092d
fix: add safety guard for AgentResponse.value being None
LEDazzio01 Mar 2, 2026
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15 changes: 11 additions & 4 deletions python/samples/03-workflows/human-in-the-loop/guessing_game_with_human_input.py
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Original file line number Diff line number Diff line change
Expand Up @@ -102,12 +102,19 @@ async def on_agent_response(
"""Handle the agent's guess and request human guidance.

Steps:
1) Parse the agent's JSON into GuessOutput for robustness.
1) Use .value to access the parsed structured output directly.
2) Request info with a HumanFeedbackRequest as the payload.
"""
# Parse structured model output
text = result.agent_response.text
last_guess = GuessOutput.model_validate_json(text).guess
# Access the parsed structured model output via .value.
# Since the agent is configured with response_format=GuessOutput,
# .value returns the parsed GuessOutput instance directly.
agent_value = result.agent_response.value
if agent_value is None:
raise RuntimeError(
"AgentResponse.value is None. Ensure that the agent is invoked with "
"options={'response_format': GuessOutput} so structured output is available."
)
last_guess = agent_value.guess

# Craft a precise human prompt that defines higher and lower relative to the agent's guess.
prompt = (
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