如何在发送邮件时附加文件名中包含空格的文件

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

def prepare_attachment(filepath):
    filename = os.path.basename(filepath)
    attachment = open(filepath, "rb")

    # instance of MIMEBase and named as p
    p = MIMEBase('application', 'octet-stream')

    # To change the payload into encoded form.
    p.set_payload((attachment).read())

    # encode into base64
    encoders.encode_base64(p)

    # 使用引号将文件名括起来
    p.add_header('Content-Disposition', 'attachment; filename="%s"' % filename)

    return p


class Sender(object):

    # other code...

    def send(self):
        msg = MIMEMultipart()

        # other code...

        # open the file to be sent
        for attachment in self.attachments:

            p = prepare_attachment(attachment)

            # attach the instance 'p' to instance 'msg'
            msg.attach(p)

        # rest of code...

        # 示例：发送邮件
        s = smtplib.SMTP('smtp.gmail.com', 587)
        s.starttls()
        s.login("your_email@gmail.com", "your_password")  # 替换为你的邮箱和密码
        s.sendmail("your_email@gmail.com", "recipient_email@example.com", msg.as_string()) # 替换为你的邮箱和收件人邮箱
        s.quit()


# 示例用法
if __name__ == '__main__':
    # 创建一个包含空格的文件名
    with open("my attachment.pdf", "w") as f:
        f.write("This is a test file.")

    sender = Sender()
    sender.attachments = ["my attachment.pdf"]
    sender.send()

    os.remove("my attachment.pdf") # 清理测试文件

p.add_header('Content-Disposition', 'attachment; filename="%s"' % filename)