Update app.py

app.py

@@ -42,11 +42,18 @@ model = PeftModel.from_pretrained(base_model, LORA_MODEL_PATH)
 model = model.to("cuda" if torch.cuda.is_available() else "cpu")
 
 # 定义推理函数
-@spaces.GPU(duration=30)
+@spaces.GPU(duration=50)
 def stream_chat(message: str, history: list, temperature: float, max_new_tokens: int, top_p: float, top_k: int, penalty: float):
     conversation = []
+    
+    # 添加系统提示，定义模型的角色
+    conversation.append({"role": "system", "content": "你是一个检测代码漏洞的AI助手，帮助用户找到并修复代码中的安全问题。"})
+
+    # 将历史对话内容添加到会话中
     for prompt, answer in history:
         conversation.extend([{"role": "user", "content": prompt}, {"role": "assistant", "content": answer}])
+    
+    # 添加当前用户的输入到对话中
     conversation.append({"role": "user", "content": message})
 
     # 使用自定义对话模板生成 input_ids