fix bug

Signed-off-by: vax521 <13263397018@163.com>

app.py

@@ -4,14 +4,17 @@ import gradio as gr
 from pydantic import BaseModel
 import openai
 
+openai.api_base = "https://api.wzunjh.top/v1"
+
 
 def ask_gpt(prompt):
-    response = openai.Completion.create(
-        engine="text-davinci-002",
-        prompt=prompt,
-        temperature=0.7,
-        max_tokens=2000
+    response = openai.ChatCompletion.create(
+    model="gpt-3.5-turbo",  # here we use `gpt-3.5-turbo` model, while Stanford-Alpaca uses `text-davinci-003`
+    messages=[
+      {"role": "user", "content": prompt},
+    ]
     )
+    
     return response.choices[0].text.strip()