原理是先生成一个微信短网址，然后访问该短网址，看是否会返回带有weixin110.qq.com这样的关键字。

参考 https://www.pianshen.com/article/4855274152/

# 检查域名是否被封
def check_domain_killed(domain):
    try:
        check_url = "http://%s" % domain
        short_url = create_wechat_short_url(check_url)
        if short_url:
            return_url = requests.get(url=short_url, timeout=30).url
            if "weixin110.qq.com" in return_url:
                push_msg("封号提醒", '域名' + domain + '被封')
        else:
            return False
    except Exception as e:
        return False
# 创建微信短域名
def create_wechat_short_url(domain):
    try:
        access_token_string = "" # 这里根据文档从微信获取access_token
        to_short_params = {
            "access_token": access_token_string,
            "action": "long2short",
            "long_url": domain
        }
        short_url = "https://api.weixin.qq.com/cgi-bin/shorturl?access_token=%s" % access_token_string
        weixin_response = requests.post(url=short_url, data=json.dumps(to_short_params)).json()
        short_url = weixin_response.get("short_url")
        return short_url
    except Exception as e:
        return False