import vk_api
import time
import random
vk = vk_api.VkApi(login = 'хз', password = 'хз')
vk.auth()

comms = ['ххх', 'новый бох', 'шарлотка', 'cot', 'tt', 'loxxx','пацаны я первый','лучший','яра','хопа епта']

def comm(owner_id, post_id,
c,from_group):
    vk.method('wall.createComment', {'owner_id':owner_id,'post_id':post_id, 'message':c,'from_group':1})

while True:
    try:
        newsfeed = vk.method("newsfeed.get", {"count": 1})
        rcomm = random.choice(comms)

        if newsfeed['items'][0]['comments']['can_post'] == 1 and newsfeed['items'][0]['comments']['count'] == 0:
            comm(newsfeed['items'][0]['source_id'], newsfeed['items'][0]['post_id'], rcomm,1)