Update app.py

app.py

@@ -10,6 +10,7 @@ from pathlib import Path
 from langchain_huggingface import ChatHuggingFace, HuggingFaceEndpoint
 from transformers import AutoTokenizer, AutoModelForSequenceClassification
 import torch
+import os
 
 huggingface_token = os.getenv('HUGGINGFACE_TOKEN')