Update app.py

app.py

@@ -1,3 +1,4 @@
+import  os
 import gradio as gr
 from langchain_community.vectorstores import Qdrant
 from qdrant_client import QdrantClient
@@ -8,7 +9,7 @@ from langchain.prompts import PromptTemplate
 from langchain.chains import LLMChain
 from langchain_openai import ChatOpenAI
 from typing import Optional
-import  os
+
 
 def util_bot(question: str) -> Optional[str]:
     """