无法使用api.update_status [Tweepy Twitter App]

Question

我已经能够使用https://www.youtube.com/watch?v=W0wWwglE1Vc

成功创建一个Twitter应用程序

但是问题是基于给定的关键字#helloworld，app无法回复推文，控制台也没有错误

import tweepy
import time
# NOTE: I put my keys in the keys.py to separate them
# from this main file.
# Please refer to keys_format.py to see the format.
from keys import *

# NOTE: flush=True is just for running this script
# with PythonAnywhere's always-on task.
# More info: https://help.pythonanywhere.com/pages/AlwaysOnTasks/
print('this is my twitter bot', flush=True)

auth = tweepy.OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET)
auth.set_access_token(ACCESS_KEY, ACCESS_SECRET)
api = tweepy.API(auth)

FILE_NAME = 'last_seen_idsearch.txt'

def retrieve_last_seen_id(file_name):
f_read = open(file_name, 'r')
last_seen_id = int(f_read.read().strip())
f_read.close()
return last_seen_id

def store_last_seen_id(last_seen_id, file_name):
f_write = open(file_name, 'w')
f_write.write(str(last_seen_id))
f_write.close()
return

def reply_to_tweets():
print('retrieving and replying to tweets...', flush=True)
# DEV NOTE: use 1060651988453654528 for testing.
last_seen_id = retrieve_last_seen_id(FILE_NAME)
# NOTE: We need to use tweet_mode='extended' below to show
# all full tweets (with full_text). Without it, long tweets
# would be cut off.
mentions = api.mentions_timeline(
                    last_seen_id,
                    tweet_mode='extended')
for mention in reversed(mentions):
    print(str(mention.id) + ' - ' + mention.full_text, flush=True)
    last_seen_id = mention.id
    store_last_seen_id(last_seen_id, FILE_NAME)
    if '#helloworld' in mention.full_text.lower():
        print('found #helloworld!', flush=True)
        print('responding back...', flush=True)
        api.update_status('@' + mention.user.screen_name +
                '#HelloWorld back to you!', mention.id)

while True:
    reply_to_tweets()
    time.sleep(15)

这是控制台输出

retrieving and replying to tweets...
retrieving and replying to tweets...
retrieving and replying to tweets...
retrieving and replying to tweets...