Update app.py

app.py

@@ -99,6 +99,9 @@ if user_question !="" and not user_question.strip().isspace() and not user_quest
         start_5 = timeit.default_timer() # Start timer
         st.write(f"Query Engine - AI QA开始：{start_5}") 
         initial_response = st.session_state.query_engine.query(user_question)
+        end_5 = timeit.default_timer() # Start timer
+        st.write(f"Query Engine - AI QA结束：{end_5}")
+        st.write(f"Query Engine - AI QA耗时：{end_5 - start_5}")        
         temp_ai_response=str(initial_response)
         final_ai_response=temp_ai_response.partition('<|end|>')[0] 
         print("AI Response:\n"+final_ai_response)