Update app.py

app.py

@@ -1,8 +1,8 @@
 import gradio as gr
 import openai
 
-# 初始化 chat_history 为空列表
-chat_history = []
+
+
 
 # 系统提示
 system_prompt = [
@@ -19,6 +19,8 @@ def clear(user_message, chat_history):
 # 响应用户消息
 def respond(openai_apikey, chat_history):
     openai.api_key = openai_apikey
+    if chat_history is None:
+        chat_history = []
     re_messages = system_prompt
     for chat in chat_history:
         re_messages.append({"role": "user", "content": chat[0]})