Update app.py

app.py

@@ -5,6 +5,8 @@ from typing import List, Optional, Tuple, Dict
 import dashscope
 from dashscope import Generation
 from dashscope.api_entities.dashscope_response import Role
+import requests  # <-- Add this line to import the requests library
+
 
 # Configuration
 default_system = 'You are Qwen, created by Alibaba Cloud. You are a helpful assistant.'