add reasoning content to ChatCompletions

using getattr to access reasoning_content

check if hasattr reasoning_content

Author: Ddper

src/agents/models/openai_chatcompletions.py

@@ -208,9 +208,13 @@ async def stream_response(
                     continue
 
                 delta = chunk.choices[0].delta
+                if hasattr(delta, "reasoning_content"):
+                    content = delta.reasoning_content if delta.reasoning_content else delta.content
+                else:
+                    content = delta.content
 
                 # Handle text
-                if delta.content:
+                if content:
                     if not state.text_content_index_and_output:
                         # Initialize a content tracker for streaming text
                         state.text_content_index_and_output = (
@@ -249,13 +253,13 @@ async def stream_response(
                     # Emit the delta for this segment of content
                     yield ResponseTextDeltaEvent(
                         content_index=state.text_content_index_and_output[0],
-                        delta=delta.content,
+                        delta=content,
                         item_id=FAKE_RESPONSES_ID,
                         output_index=0,
                         type="response.output_text.delta",
                     )
                     # Accumulate the text into the response part
-                    state.text_content_index_and_output[1].text += delta.content
+                    state.text_content_index_and_output[1].text += content
 
                 # Handle refusals (model declines to answer)
                 if delta.refusal: