我正在尝试附加一个图像到我的电子邮件发件人写的python

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.image import MIMEImage

# 邮件信息
sender_email = "your_email@example.com"
receiver_email = "recipient_email@example.com"
subject = "附带图像的邮件"
message = "这是一封带有图像附件的邮件。"

# 创建邮件对象
msg = MIMEMultipart()
msg["From"] = sender_email
msg["To"] = receiver_email
msg["Subject"] = subject

# 添加邮件正文
msg.attach(MIMEText(message, "plain"))

# 添加图像附件
with open("image.jpg", "rb") as f:
    image_data = f.read()
image = MIMEImage(image_data, name="image.jpg")
msg.attach(image)

# 发送邮件
smtp_server = "smtp.example.com"
smtp_port = 587
smtp_username = "your_username"
smtp_password = "your_password"

with smtplib.SMTP(smtp_server, smtp_port) as server:
    server.starttls()
    server.login(smtp_username, smtp_password)
    server.send_message(msg)
    print("邮件发送成功！")