Update app.py

app.py

@@ -1,7 +1,4 @@
 from typing import List
-from langchain_core.documents import Document
-from langchain_community.document_loaders import PyPDFLoader, WebBaseLoader
-from langchain_unstructured import UnstructuredLoader
 from langchain import hub
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_community.vectorstores import Chroma
@@ -14,15 +11,10 @@ from langchain_openai import OpenAIEmbeddings, ChatOpenAI
 from langchain_huggingface import HuggingFaceEmbeddings
 import ollama
 from langchain.embeddings import OllamaEmbeddings, HuggingFaceEmbeddings
-from langchain_ollama import OllamaEmbeddings
 import numpy as np
-from sklearn.decomposition import PCA
-import matplotlib.pyplot as plt
-import chromadb
 import uuid
 import os
 from dotenv import load_dotenv
-from langchain.chat_models import ChatOllama
 from langchain.chains import RetrievalQA
 from langchain_core.output_parsers import StrOutputParser
 from langchain_core.runnables import RunnablePassthrough
@@ -30,9 +22,6 @@ from langchain_huggingface import HuggingFaceEmbeddings
 from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationalRetrievalChain
 from langchain_core.prompts import PromptTemplate
-from sklearn.metrics.pairwise import cosine_similarity
-from langsmith import traceable
-import seaborn as sns
 from transformers import AutoModelForSequenceClassification, AutoTokenizer
 from transformers import pipeline
 import json
@@ -41,11 +30,9 @@ from email.mime.text import MIMEText
 from email.mime.multipart import MIMEMultipart
 from email.message import EmailMessage
 import ssl
-import json
 from datetime import datetime
 from langchain.prompts import PromptTemplate
 from langchain.schema.runnable import RunnablePassthrough
-from transformers import pipeline
 from sentence_transformers import CrossEncoder
 from langchain_openai import ChatOpenAI