Update app.py

app.py

@@ -211,6 +211,7 @@
 from langdetect import detect
 from transformers import AutoTokenizer, AutoModelForCausalLM, TextGenerationPipeline, GenerationConfig
 import torch
+import os
 import logging
 from fastapi import FastAPI, Request, HTTPException, status
 from pydantic import BaseModel, Field
@@ -219,6 +220,14 @@ import asyncio
 from concurrent.futures import ThreadPoolExecutor
 from fastapi.middleware.cors import CORSMiddleware
 
+from langchain.vectorstores import Qdrant
+from langchain.embeddings import HuggingFaceEmbeddings
+from langchain.chains import RetrievalQA
+from langchain.llms import HuggingFacePipeline
+from qdrant_client import QdrantClient
+
+
+
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)