Update app.py

app.py

@@ -21,7 +21,7 @@ if st.button('Get AI Response'):
             data = {"url": url, "question": question}
             # 发送请求到 FastAPI 服务器
             current_datetime_0 = datetime.datetime.now()
-            print(f'API调用请求发送开始 @ {current_datetime}')             
+            print(f'API调用请求发送开始 @ {current_datetime_0}')             
             start_1 = timeit.default_timer() # Start timer               
             response = requests.post(fastapi_server_url, json=data)                       
             end_1 = timeit.default_timer() # Start timer