title: ValueError: too many values to unpack-converting pkl file to unpack
body: <p>I am running the code to train multi class and im getting the error too many values to unpack using the yelp dataset python DNN for sentiment analysis.</p>
  
  <pre><code>(reviews_words_index, labels) = pickle.load(open("review_sents_1859888.pkl", 'rb'))
  </code></pre>
  
  <p>but i get en error</p>
  
  <pre><code>ValueError: too many values to unpack.
  </code></pre>