Update app2.py

app2.py

@@ -13,8 +13,14 @@ from langchain.text_splitter import RecursiveCharacterTextSplitter, CharacterTex
 import tiktoken
 import chroma
 import gradio as gr
-import os
+
+import os, tempfile, glob, random
+from pathlib import Path
+from IPython.display import Markdown
+from PIL import Image
+from getpass import getpass
 import numpy as np
+from itertools import combinations
 
 # LLM: openai and google_genai
 import openai