如何通过电子邮件发送Python Dataframe？

import pandas as pd
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.application import MIMEApplication

data = {'Name': ['John', 'Jane', 'Mike'],
        'Age': [25, 30, 35],
        'City': ['New York', 'London', 'Paris']}
df = pd.DataFrame(data)

html = df.to_html()

msg = MIMEMultipart()
msg['Subject'] = 'Python Dataframe'
msg['From'] = 'sender@example.com'
msg['To'] = 'recipient@example.com'

body = MIMEText(html, 'html')
msg.attach(body)

attachment = MIMEApplication(df.to_csv(index=False).encode('utf-8'))
attachment.add_header('Content-Disposition', 'attachment', filename='dataframe.csv')
msg.attach(attachment)

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)