title: requests.exceptions.ChunkedEncodingError: ('Connection broken: IncompleteRead(0 bytes read, 512 more expected)', IncompleteRead
body: <p>I wanted to write a program to fetch tweets from Twitter and then do sentiment analysis. I wrote the following code and got the error even after importing all the necessary libraries. I'm relatively new to data science, so please help me. 
  I could not understand the reason for this error:</p>
  
  <pre><code>class TwitterClient(object):
  
  
  def __init__(self):
  
      # keys and tokens from the Twitter Dev Console
      consumer_key = 'XXXXXXXXX'
      consumer_secret = 'XXXXXXXXX'
      access_token = 'XXXXXXXXX'
      access_token_secret = 'XXXXXXXXX'
      api = Api(consumer_key, consumer_secret, access_token, access_token_secret)
  
      def preprocess(tweet, ascii=True, ignore_rt_char=True, ignore_url=True, ignore_mention=True, ignore_hashtag=True,letter_only=True, remove_stopwords=True, min_tweet_len=3):
          sword = stopwords.words('english')
  
          if ascii:  # maybe remove lines with ANY non-ascii character
              for c in tweet:
                  if not (0 &lt; ord(c) &lt; 127):
                      return ''
  
          tokens = tweet.lower().split()  # to lower, split
          res = []
  
          for token in tokens:
              if remove_stopwords and token in sword: # ignore stopword
                  continue
              if ignore_rt_char and token == 'rt': # ignore 'retweet' symbol
                  continue
              if ignore_url and token.startswith('https:'): # ignore url
                  continue
              if ignore_mention and token.startswith('@'): # ignore mentions
                  continue
              if ignore_hashtag and token.startswith('#'): # ignore hashtags
                  continue
              if letter_only: # ignore digits
                  if not token.isalpha():
                      continue
              elif token.isdigit(): # otherwise unify digits
                  token = '&lt;num&gt;'
  
              res += token, # append token
  
          if min_tweet_len and len(res) &lt; min_tweet_len: # ignore tweets few than n tokens
              return ''
          else:
              return ' '.join(res)
  
      for line in api.GetStreamSample():            
          if 'text' in line and line['lang'] == u'en': # step 1
              text = line['text'].encode('utf-8').replace('\n', ' ') # step 2
              p_t = preprocess(text)
  
      # attempt authentication
      try:
          # create OAuthHandler object
          self.auth = OAuthHandler(consumer_key, consumer_secret)
          # set access token and secret
          self.auth.set_access_token(access_token, access_token_secret)
          # create tweepy API object to fetch tweets
          self.api = tweepy.API(self.auth)
      except:
          print("Error: Authentication Failed")
  </code></pre>
  
  <p>Assume all the necessary libraries are imported. The error is on line 69.</p>
  
  <pre><code>for line in api.GetStreamSample():            
      if 'text' in line and line['lang'] == u'en': # step 1
          text = line['text'].encode('utf-8').replace('\n', ' ') # step 2
          p_t = preprocess(text)
  </code></pre>
  
  <p>I tried checking on the internet the reason for the error but could not get any solution. </p>
  
  <p>Error was:</p>
  
  <pre><code>requests.exceptions.ChunkedEncodingError: ('Connection broken: IncompleteRead(0 bytes read, 512 more expected)', IncompleteRead(0 bytes read, 512 more expected))
  </code></pre>
  
  <p>I'm using Python 2.7 and requests version 2.14, the latest one. </p>