已经备案域名过期不续费

import whois
import smtplib
from email.mime.text import MIMEText
from datetime import datetime, timedelta

def check_domain_expiration(domain):
    w = whois.whois(domain)
    expiration_date = w.expiration_date
    if isinstance(expiration_date, list):
        expiration_date = expiration_date[0]
    days_until_expiration = (expiration_date - datetime.now()).days
    return days_until_expiration

def send_reminder_email(domain, days_until_expiration):
    msg = MIMEText(f"域名 {domain} 将在 {days_until_expiration} 天后过期，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_email_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())

domain = 'example.com'
days_until_expiration = check_domain_expiration(domain)
if days_until_expiration < 30:
    send_reminder_email(domain, days_until_expiration)