Python: AzureOpenAIResponsesClient(model_id=...) resolves to True due to walrus precedence

[moonbox3]

Description

AzureOpenAIResponsesClient incorrectly handles model_id in constructor kwargs due to walrus operator precedence.

Current code:

if model_id := kwargs.pop("model_id", None) and not deployment_name:
    deployment_name = str(model_id)

When model_id is provided and deployment_name is not, model_id receives a boolean (True) instead of the model string.

Expected behavior:

• model_id="gpt-4o" should set deployment/model id to "gpt-4o".

Code Sample

from agent_framework.azure import AzureOpenAIResponsesClient

c = AzureOpenAIResponsesClient(
    model_id="gpt-4o",
    endpoint="https://example.openai.azure.com",
    api_key="k",
)
print(c.model_id)  # observed: True

Error Messages / Stack Traces

No exception is raised; behavior is incorrect:

model_id True

Package Versions

• agent-framework-core: 1.0.0rc2
• Source commit tested: 02ba27493 (main)

Python Version

Python 3.13.5

Additional Context

Likely location:

• packages/core/agent_framework/azure/_responses_client.py (constructor near line 183)