Update app.py

app.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*- Nour Eddine Zekaoui et al.
 
+import os
 import torch
 import spaces
 import gradio as gr
@@ -11,6 +12,9 @@ from transformers import (
     AutoModelForCausalLM)
 
 
+# Set an environment variable
+HF_TOKEN = os.environ.get("HF_TOKEN")
+
 def generate_prompt(instruction, input=None):
     if input:
         return f"""Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.  # noqa: E501