Update app.py

app.py

@@ -1,16 +1,17 @@
 # Q&A Chatbot
-from langchain.llms import OpenAI
+#from langchain.llms import OpenAI
 from langchain import HuggingFaceHub
-#from dotenv import load_dotenv
+from dotenv import load_dotenv
 
-#load_dotenv()  # take environment variables from .env.
+load_dotenv()  # take environment variables from .env.
 
 import streamlit as st
 import os
 
+huggingface_token = os.getenv("HUGGINGFACEHUB_API_TOKEN")
 
 ## Function to load OpenAI model and get respones
-os.environ["HUGGINGFACEHUB_API_TOKEN"]="HUGGINGFACEHUB_API_TOKEN"
+os.environ["HUGGINGFACEHUB_API_TOKEN"]=huggingface_token
 llm_huggingface=HuggingFaceHub(repo_id="google/flan-t5-xxl",model_kwargs={"temperature":0.6,"max_length":64})