import os
import vk_api
import urllib.request
def captcha_handler(captcha):
    print (f"url: {captcha.get_url()}\n")
    key = input("Enter captcha code: ")
    return captcha.try_again(key)
def auth_handler():
    code = input("Enter 2FA code: ")
    return (code, True)
def save_post_pictures(post, imgfolder, imres):
    pictures = []
    if not os.path.exists(imgfolder):
        os.makedirs(imgfolder)
    for attachment in post['attachments']:
        if attachment['type'] == 'photo':
            photo = attachment['photo']
            for size in photo['sizes']:
                if size['type'] == imres:
                    url = size['url']
                    filename = ('_'.join(url.split('/')[-2:])).split('?')[0]
                    urllib.request.urlretrieve(url, os.path.join(imgfolder, filename))
                    pictures.append(filename)
    return pictures
phone = input("phone ")
password = input("password ")
domain = 'plattenbauten' # vk.com/plattenbauten
sess = vk_api.VkApi(phone, password, captcha_handler=captcha_handler, auth_handler=auth_handler)
sess.auth()
api = sess.get_api()
posts = api.wall.get(domain=domain, count=1)['items']
save_post_pictures(posts[0], domain, 'z') # https://vk.com/dev/photo_sizes - z максимальный размер