clean: isort

app.py

@@ -2,15 +2,13 @@ import json
 import os
 
 import sqlalchemy
-import sqlite_vss
 import streamlit as st
 import streamlit.components.v1 as components
-from langchain.llms import OpenAI
 from langchain.callbacks import get_openai_callback
 from langchain.chains import ConversationalRetrievalChain
 from langchain.chains.conversation.memory import ConversationBufferMemory
 from langchain.embeddings import GPT4AllEmbeddings
-from sqlalchemy import event
+from langchain.llms import OpenAI
 
 from chat_history import insert_chat_history, insert_chat_history_articles
 from css import load_css

custom_pgvector.py

@@ -4,7 +4,6 @@ import contextlib
 import enum
 import json
 import logging
-import struct
 from typing import Any, Dict, Generator, Iterable, List, Optional, Tuple, Type
 
 import pandas as pd
@@ -16,8 +15,10 @@ from langchain.vectorstores.base import VectorStore
 from pgvector.sqlalchemy import Vector
 from sqlalchemy import delete, text
 from sqlalchemy.orm import Session, declarative_base
+
 from utils import str_to_list
 
+
 class DistanceStrategy(str, enum.Enum):
     """Enumerator of the Distance strategies."""