@celery.task(name='send_some_xyz_users_alerts')
def send_some_xyz_users_alerts():
    list_of_users = find_some_list_of_users()
    for user in list_of_users:
        send_user_alert.delay(user)


@celery.task(name='send_user_alert')
def send_user_alert(user):
    data = get_data_for_user(user)
    send_mail_to_user(data)