Update app.py

app.py

@@ -12,9 +12,18 @@ from langchain.chains import ConversationalRetrievalChain
 from langchain.chat_models import ChatOpenAI
 from htmlTemplates import bot_template, user_template, css
 from transformers import pipeline
+
+import pinecone
+from langchain.embeddings.openai import OpenAIEmbeddings
+from langchain.vectorstores import Pinecone
+from langchain import PromptTemplate
+from langchain.chains.question_answering import load_qa_chain
+#from langchain.chains.summarize import load_summarize_chain
+import nltk
 import sys
 import os
 from dotenv import load_dotenv
+load_dotenv()
 
 HUGGINGFACEHUB_API_TOKEN = os.getenv("HUGGINGFACEHUB_API_TOKEN")
 repo_id=os.getenv("repo_id")