如何使用python将文件附加到电子邮件中？

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

def send_email(sender_email, sender_password, receiver_email, subject, message, file_path):
    # 创建一个多部分（multipart）的邮件对象
    msg = MIMEMultipart()
    msg['From'] = sender_email
    msg['To'] = receiver_email
    msg['Subject'] = subject

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

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

    # 发送邮件
    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login(sender_email, sender_password)
    server.send_message(msg)
    server.quit()

# 示例用法
sender_email = "your_email@gmail.com"
sender_password = "your_password"
receiver_email = "recipient_email@gmail.com"
subject = "附件测试"
message = "这是一封带附件的测试邮件"
file_path = "path_to_your_file"

send_email(sender_email, sender_password, receiver_email, subject, message, file_path)