Tweety occassional但持久性错误＆＃34;期待长度，发现意外值＆＃34;

Question

我已经将Tweepy与Twitter流API一起使用，汇总了一个python脚本，该脚本使用某个#hashtag收集推文并将其保存到数据库中。我在自己的Ubuntu服务器上托管它，我通过ssh从我的电脑登录。

我使用标签通过推特自己测试代码。当我启动脚本时，它将流式传输前一个或两个推文，然后在下一个推文上，我收到以下错误：

Traceback (most recent call last):
  File "stream.py", line 69, in <module>
    stream.filter(track=settings.TRACK_TERMS)
  File "build/bdist.linux-x86_64/egg/tweepy/streaming.py", line 450, in filter
  File "build/bdist.linux-x86_64/egg/tweepy/streaming.py", line 364, in _start
  File "build/bdist.linux-x86_64/egg/tweepy/streaming.py", line 297, in _run
  File "build/bdist.linux-x86_64/egg/tweepy/streaming.py", line 266, in _run
  File "build/bdist.linux-x86_64/egg/tweepy/streaming.py", line 323, in _read_loop
tweepy.error.TweepError: Expecting length, unexpected value found

从我的测试来看，这似乎与推文的长度，主题标签的位置或推文中使用的任何特殊字符无关。为什么脚本开始工作，处理一两条推文并将它们添加到数据库中，然后在下一条推文中突然想出这个错误？

下面是我的stream.py代码（我有一个单独的文件＆＃34; settings.py＆＃34;这是指，包含我的track_term #hashtag和api密钥）：

import settings
import dataset
import tweepy
from textblob import TextBlob
from sqlalchemy.exc import ProgrammingError
import json

db = dataset.connect(settings.CONNECTION_STRING)

class StreamListener(tweepy.StreamListener):

    def on_status(self, status):
        print(status.text)
        description = status.user.description
        text = status.text
        name = status.user.screen_name
        followers = status.user.followers_count
        created = status.created_at
        retweets = status.retweet_count
        id_str = status.id_str
        #creating and storing in database

        table = db[settings.TABLE_NAME]
        try:
            table.insert(dict(
                user_description=description,
                text=text,
                user_name=name,
                user_followers=followers,
                id_str=id_str,
                created=created,
                retweet_count=retweets,
            ))
        except ProgrammingError as err:
            print(err)

    def on_error(self, status_code):
        if status_code == 420:
            #returning False in on_data disconnects the stream
            return False

auth = tweepy.OAuthHandler(settings.TWITTER_APP_KEY, settings.TWITTER_APP_SECRET)
auth.set_access_token(settings.TWITTER_KEY, settings.TWITTER_SECRET)
api = tweepy.API(auth)

stream_listener = StreamListener()
stream = tweepy.Stream(auth=api.auth, listener=stream_listener)
stream.filter(track=settings.TRACK_TERMS)