рассылка файлов с заголовком v.1.1

import smtplib
from smtplib import SMTP_SSL
from email.mime.base import MIMEBase
from email import encoders
import os
import sys
from email.mime.text import MIMEText
from email.mime.multipart import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.image import MIMEImage
from email.mime.audio import MIMEAudio
from email.header import Header
from base64 import encodebytes
import email
import mimetypes
from email.header import decode_header
import random
import traceback


def sendFileByFile(path):

#список файлов для отправки
    SENDER = 'sender_email'

    FILES = ['C://Users/олег/1.txt',
             'C://Users/олег/2.txt',
             'C://Users/олег/3.txt'
    ]

    ATTACH = 'C://Users/олег/IP_Kornilov_O.doc'

    EMAILS = ['/////']

    for i in EMAILS:
        try:
            print(i)
            path = random.choice(FILES)
            if not os.path.isfile(path):             #является ли путь файлом
                print("Неверный путь к файлу")
                break
            else:
                filename = os.path.basename(ATTACH) #базовое имя пути (эквивалентно os.path.split(path)[1])
                basename = os.path.basename(ATTACH)

    #Compose attachment
            part = MIMEBase('application', "octet-stream")
            part.set_payload(open(ATTACH, "rb").read())    #Set the entire message object’s payload to payload.
            encoders.encode_base64(part) #Encodes the payload into base64 form and sets the Content-Transfer-Encoding header to base64

            #Here’s an example:
            #msg.add_header('Content-Disposition', 'attachment', filename='bud.gif')
            # This will add a header that looks like
            #Content-Disposition: attachment; filename="bud.gif"
            part.add_header('Content-Disposition', 'attachment', filename = "%s"
                            % basename)

    #Compose message
            msg = MIMEMultipart()
    #Header \\ заголовок письма
            msg['Subject'] = 'по вопросу экологической документации и прокуратуры (г. Иркутск)'
            msg['From'] = SENDER
            msg['To'] = i
            msg.attach(part)

    #Send mail
            smtp = smtplib.SMTP('smtp.mail.ru', 25)
            smtp.ehlo()
            smtp.starttls()

            smtp.login(SENDER, 'password')
            smtp.sendmail(SENDER, i, msg.as_string())
            print('%s sent %s' % (path, i))
        except Exception:
            print(''.join(traceback.format_exception(*sys.exc_info())))
            continue


    print('всё')




sendFileByFile('C://Users/олег/IP_Kornilov.doc')