import vk_api
from vk_api.longpoll import VkLongPoll, VkEventType
import time
import random


def main():

    login, password = '*', '*'
    vk_session = vk_api.VkApi(login, password)

    try:
        vk_session.auth(token_only=True)
    except vk_api.AuthError as error_msg:
        print(error_msg)
        return

    vk = vk_session.get_api()
    longpoll = VkLongPoll(vk_session)

    for event in longpoll.listen():
        if event.type == VkEventType.MESSAGE_NEW and event.to_me and event.text:
            print('Новое сообщение')
            if event.from_user:
                while True:
                    vk.messages.send(
                        user_id=event.user_id,
                        message='',
                        random_id=random.randint(0, 111111111)
                    )
                    time.sleep(2)
            if event.from_chat:
                while True:
                    vk.messages.send(
                        chat_id=event.chat_id,
                        message='',
                        random_id=random.randint(0, 111111111)
                    )
                    time.sleep(2)


if __name__ == '__main__':
    main()