如何在日志输出电子邮件中附加附件？

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email import encoders

# 创建MIMEMultipart对象
msg = MIMEMultipart()

# 添加附件
attachment = open('path/to/file', 'rb')
part = MIMEBase('application', 'octet-stream')
part.set_payload((attachment).read())
encoders.encode_base64(part)
part.add_header('Content-Disposition', "attachment; filename=filename")
msg.attach(part)

# 发送邮件
smtpObj = smtplib.SMTP('smtp.example.com', 587)
smtpObj.login('sender@example.com', 'password')
smtpObj.sendmail('sender@example.com', 'receiver@example.com', msg.as_string())
smtpObj.quit()

import javax.mail.*;
import javax.mail.internet.*;
import java.util.Properties;

// 创建Session对象
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.example.com");
props.put("mail.smtp.port", "587");
Session session = Session.getInstance(props, null);

// 创建Message对象
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress("sender@example.com"));
msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse("receiver@example.com"));
msg.setSubject("Subject");

// 创建Multipart对象
Multipart multipart = new MimeMultipart();

// 创建附件
MimeBodyPart attachment = new MimeBodyPart();
attachment.attachFile(new File("path/to/file"));
multipart.addBodyPart(attachment);

// 将Multipart对象添加到Message对象中
msg.setContent(multipart);

// 发送邮件
Transport.send(msg);