review

Author: moritzwilksch

pydantic_ai_slim/pydantic_ai/agent/__init__.py

@@ -684,7 +684,7 @@ def _run_span_end_attributes(
                 'all_messages_events': json.dumps(
                     [
                         InstrumentedModel.event_to_dict(e)
-                        for e in settings.messages_to_otel_events(list(state.message_history))
+                        for e in settings.messages_to_otel_events(state.message_history)
                     ]
                 )
             }

pydantic_ai_slim/pydantic_ai/agent/abstract.py

@@ -493,7 +493,7 @@ async def stream_to_final(
                                 raise exceptions.AgentRunError('Agent run produced final results')  # pragma: no cover
                             yielded = True
 
-                            messages = list(graph_ctx.state.message_history)
+                            messages = graph_ctx.state.message_history
 
                             async def on_complete() -> None:
                                 """Called when the stream has completed.
@@ -537,7 +537,7 @@ async def on_complete() -> None:
                     # if a tool function raised CallDeferred or ApprovalRequired.
                     # In this case there's no response to stream, but we still let the user access the output etc as normal.
                     yield StreamedRunResult(
-                        list(graph_ctx.state.message_history),
+                        graph_ctx.state.message_history,
                         graph_ctx.deps.new_message_index,
                         run_result=agent_run.result,
                     )