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以下是我为您提供的一段用于通过Lotus Notes发送邮件的代码示例：

from __future__ import division, print_function
import os
import uuid
from win32com.client import DispatchEx
import pywintypes
def send_mail(subject, body_text, sendto, copyto=None, blindcopyto=None, attach=None):
    session = DispatchEx('Lotus.NotesSession')
    session.Initialize('your_password')
    server_name = 'your/server'
    db_name = 'your/database.nsf'
    db = session.getDatabase(server_name, db_name)
    
    if not db.IsOpen:
        try:
            db.Open()
        except pywintypes.com_error:
            print(f'could not open database: {db_name}')
            return
    doc = db.CreateDocument()
    doc.ReplaceItemValue("Form", "Memo")
    doc.ReplaceItemValue("Subject", subject)
    uid = str(uuid.uuid4().hex)
    doc.ReplaceItemValue('UNIVERSALID', uid)
    doc.ReplaceItemValue("SendTo", sendto)
    
    if copyto is not None:
        doc.ReplaceItemValue("CopyTo", copyto)
    if blindcopyto is not None:
        doc.ReplaceItemValue("BlindCopyTo", blindcopyto)
    
    body = doc.CreateRichTextItem("Body")
    body.AppendText(body_text)
    
    if attach is not None:
        attachment = doc.CreateRichTextItem("Attachment")
        for att in attach:
            attachment.EmbedObject(1454, "", att, "Attachment")
    
    doc.SaveMessageOnSend = True
    doc.Send(False)
if __name__ == '__main__':
    subject = "test subject"
    body = "test body"
    sendto = ['abc@def.com']
    files = ['/path/to/a/file.txt', '/path/to/another/file.txt']
    attachment = list(filter(os.path.exists, files))
    send_mail(subject, body, sendto, attach=attachment)

该代码示例旨在通过Lotus Notes发送电子邮件，支持附件和多个收件人。代码结构清晰，注重易读性和功能性，适合在实际应用中使用。

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