Update app.py

app.py

@@ -1,12 +1,8 @@
 import json
 import streamlit as st
-from gpt_index import GPTSimpleVectorIndex
+from gpt_index import GPTListIndex
 
-def search_gpt_index():
-    # Load the GPT index from the file
-    with open('index-4.json', 'r') as f:
-        index_data = json.load(f)
-    gpt_index = GPTSimpleVectorIndex(index_data)
+search_gpt_index = GPTListInex.load_from_disk('index-4.json')
 
     # Define the app layout
     st.title('GPT Search')