Python: updated declarative samples and handling of non-pydantic response formats (#5022)

* updated declarative samples and handling of non-pydantic response formats

* fixed from comments

* update docstring

python/samples/02-agents/declarative/openai_agent.py

@@ -0,0 +1,30 @@
+# Copyright (c) Microsoft. All rights reserved.
+import asyncio
+from pathlib import Path
+
+from agent_framework.declarative import AgentFactory
+from dotenv import load_dotenv
+
+# Load environment variables from .env file
+load_dotenv()
+
+
+async def main():
+    """Create an agent from a declarative yaml specification and run it."""
+    # get the path
+    current_path = Path(__file__).parent
+    yaml_path = current_path.parent.parent.parent.parent / "agent-samples" / "openai" / "OpenAIResponses.yaml"
+    # create the agent from the yaml
+    agent = AgentFactory(safe_mode=False).create_agent_from_yaml_path(yaml_path)
+    # use the agent
+    response = await agent.run("Why is the sky blue, answer in Dutch?")
+    # Use response.value with try/except for safe parsing
+    try:
+        parsed = response.value
+        print("Agent response:", parsed)
+    except Exception:
+        print("Agent response:", response.text)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())