中文域名过期了

import datetime
import smtplib
from email.mime.text import MIMEText

def check_domain_expiration(domain, expiration_date):
    today = datetime.date.today()
    days_until_expiration = (expiration_date - today).days
    if days_until_expiration <= 30:
        send_reminder_email(domain, days_until_expiration)

def send_reminder_email(domain, days_until_expiration):
    msg = MIMEText(f"域名 {domain} 即将过期，还有 {days_until_expiration} 天，请及时续费。")
    msg['Subject'] = '域名续费提醒'
    msg['From'] = 'your_email@example.com'
    msg['To'] = 'recipient_email@example.com'

    smtp_server = 'smtp.example.com'
    smtp_port = 587
    smtp_username = 'your_email@example.com'
    smtp_password = 'your_password'

    with smtplib.SMTP(smtp_server, smtp_port) as server:
        server.starttls()
        server.login(smtp_username, smtp_password)
        server.sendmail(msg['From'], msg['To'], msg.as_string())

# 示例使用
domain = 'example.com'
expiration_date = datetime.date(2024, 1, 1)
check_domain_expiration(domain, expiration_date)