发送带有附件的电子邮件通过Send从内容中获取数据

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

# 设置发件人、收件人和主题
from_addr = 'sender@example.com'
to_addr = 'recipient@example.com'
subject = '发送带附件的邮件'

# 创建一个MIMEMultipart对象，用于包含邮件内容和附件
msg = MIMEMultipart()
msg['From'] = from_addr
msg['To'] = to_addr
msg['Subject'] = subject

# 添加邮件正文
body = '这是一封带附件的邮件。'
msg.attach(MIMEText(body, 'plain'))

# 添加附件
filename = 'attachment.txt'
attachment = open(filename, 'rb')
part = MIMEBase('application', 'octet-stream')
part.set_payload(attachment.read())
encoders.encode_base64(part)
part.add_header('Content-Disposition', f'attachment; filename= {filename}')
msg.attach(part)

# 连接到SMTP服务器并发送邮件
smtp_server = 'smtp.example.com'
smtp_port = 587
username = 'your_username'
password = 'your_password'

try:
    with smtplib.SMTP(smtp_server, smtp_port) as server:
        server.starttls()
        server.login(username, password)
        server.sendmail(from_addr, to_addr, msg.as_string())
        print('邮件发送成功！')
except Exception as e:
    print('邮件发送失败:', str(e))