Mocking Twitter's API library with Python's patch decorator

I'm using http://ift.tt/SHBj91 lib for Twiitter's API integration in Python. I have tw.py file with some Twitter's API usages and a tests.py file with some unit tests. Why my test: test_third does not pass? What am I doing wrong with patching tweepy.API class?

# tw.py
import tweepy
import settings


def get_tweepy_api():
    """
    Constructs twitter api object with all required keys, tokens.

    @return: tweepy API object
    @rtype: tweepy.api.API
    """
    oauth = tweepy.auth.OAuthHandler(
        consumer_key=settings.TWITTER_CONSUMER_KEY_ENGINE,
        consumer_secret=settings.TWITTER_CONSUMER_SECRET_KEY_ENGINE,
        callback=None)
    oauth.set_access_token(settings.TWITTER_ACCESS_KEY_ENGINE,
        settings.TWITTER_ACCESS_SECRET_ENGINE)
    api = tweepy.API(oauth)
    return api


class TwitterAccount(object):

    @staticmethod
    def validate(user_id):
        try:
            api = get_tweepy_api()
            print('object api', api)
            tuser = api.get_user(user_id)
            print('method', api.get_user)
            print('tuser', tuser)
            if tuser.protected:
                return False
        except tweepy.TweepError:
            return False
        return True


# tw.py
import unittest
from unittest.mock import create_autospec, MagicMock, ANY, patch
import tweepy
from tw import TwitterAccount


class MockedUser(object):
    protected = False


class TwitterTestCase(unittest.TestCase):

    def test_first(self):
        api = create_autospec(tweepy.API, name='FirstAPI')
        api.get_user = MagicMock(return_value=MockedUser)
        tweepy.API = MagicMock(return_value=api)
        self.assertTrue(TwitterAccount.validate('123'))
        api.get_user.assert_called_once_with('123')

    @patch.object(tweepy.API, 'get_user', return_value=MockedUser)
    def test_second(self, tweepy_api):
        self.assertTrue(TwitterAccount.validate('123'))
        tweepy_api.assert_called_once_with(ANY)

    @patch('tw.tweepy.API', autospec=True)
    def test_third(self, tweepy_api):
        tweepy_api.get_user = MagicMock(return_value=MockedUser)
        self.assertTrue(TwitterAccount.validate('123'))