Python Email sender

import datetime
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
 
import time
import openpyxl
import pyodbc
import smtplib
import schedule
import logging
 
import sql_queries
import config
 
 
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)
 
 
class DataBaseConnector:
    def __init__(self, server, database):
        self.server = server
        self.database = database
 
    def connection(self):
        conn = pyodbc.connect('DRIVER={ODBC Driver 17 for SQL Server};SERVER='+self.server+';DATABASE='+self.database+';Trusted_Connection=yes')
        return conn
 
 
class ExcelGeneration:
    def __init__(self, data, cursor, file_name):
        self.data = data
        self.cursor = cursor
        self.file_name = file_name
 
    def generation_excel(self):
 
        wb = openpyxl.Workbook()
        sheet = wb.active
 
        #добавляем заголовки
        headers = [desc[0] for desc in self.cursor.description]
        sheet.append(headers)
 
        #Добавляем данные с базы
        for row in self.data:
            sheet.append(list(row))
        wb.save(self.file_name)
        return self.file_name
 
 
class EmailSender:
    def __init__(self, email_sender, email_recipient, subject,  attachment, smtp_server, smtp_port, email_password):
        self.email_sender = email_sender
        self.email_recipient = email_recipient
        self.subject = subject
        self.attachment = attachment
        self.smtp_server = smtp_server
        self.smtp_port = smtp_port
        self.email_password = email_password
 
    def send_email(self):
 
        msg = MIMEMultipart()
 
        msg['From'] = self.email_sender
        msg['To'] = ', '.join(self.email_recipient)
        msg['Subject'] = self.subject
 
 
        with open(self.attachment, 'rb') as f:
            self.attachment = MIMEApplication(f.read(), Name=self.attachment)
        msg.attach(self.attachment)
        server = smtplib.SMTP(self.smtp_server, self.smtp_port)
        server.login(self.email_sender, self.email_password)
        server.sendmail(self.email_sender, self.email_recipient, msg.as_string())
        server.quit()
 
 
class NewsLetters:
    def __init__(self, sql_server, DataBase, sql_query, email_sender, email_recipient, email_subject, smtp_server, smtp_port, email_password, file_name):
        self.sql_server = sql_server
        self.DataBase = DataBase
        self.sql_query = sql_query
        self.email_sender = email_sender
        self.email_recipient = email_recipient
        self.email_subject = email_subject
        self.smtp_server = smtp_server
        self.smtp_port = smtp_port
        self.email_password = email_password
        self.file_name = file_name
 
    def start(self):
        logger.info('Начало процесса NewsLetters')
 
        connector = DataBaseConnector(self.sql_server, self.DataBase)
        conn = connector.connection()
        cursor = conn.cursor()
        cursor.execute(self.sql_query)
        data = cursor.fetchall()
        logger.info('Успешно подключение к бд')
 
 
        generator = ExcelGeneration(data, cursor, self.file_name)
        attachment = generator.generation_excel()
        logger.info('Файл Excel сгенерирован успешно')
 
        sender = EmailSender(self.email_sender, self.email_recipient, self.email_subject, attachment, self.smtp_server, self.smtp_port, self.email_password)
        sender.send_email()
        logger.info('Письмо отправлено успешно')
 
def run():
 
    email = NewsLetters(config.sql_server, config.DataBase, sql_queries.sql_query, config.email_sender, sql_queries.email_recipient, sql_queries.email_subject, config.smtp_server, config.smtp_port, config.email_password, sql_queries.file_name)
    email.start()
 
def check_if_first_day_of_month():
 
    logger.info('Проверяем число')
    if datetime.date.today().day == 9:
        run()
    else:
        logger.info('Не сегодня ;)')
 
schedule.every().day.at("14:00").do(check_if_first_day_of_month)
 
 
 
while True:
    schedule.run_pending()
    time.sleep(1)