我如何找到一个单词在tweepy流中重复的次数？

import tweepy
from collections import Counter

consumer_key = "Your_Consumer_Key"
consumer_secret = "Your_Consumer_Secret"
access_token = "Your_Access_Token"
access_token_secret = "Your_Access_Token_Secret"

auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)

class MyStreamListener(tweepy.StreamListener):
    def __init__(self):
        super(MyStreamListener, self).__init__()
        self.word_counter = Counter()

    def on_status(self, status):
        words = status.text.split()
        self.word_counter.update(words)

    def on_error(self, status_code):
        if status_code == 420:
            return False

my_listener = MyStreamListener()
my_stream = tweepy.Stream(auth=auth, listener=my_listener)
my_stream.filter(track=['keyword'])

word_count = my_listener.word_counter['cloud']
print("The word 'cloud' appears", word_count, "times.")