title: Loading .npy File Loads an Empty Array
body: <p>I have a TfIDF matrix of size </p>
  
  <pre><code>tr_tfidf_q1.shape, tr_tfidf_q2.shape which gives 
  ( (404288, 83766), (404288, 83766) )
  </code></pre>
  
  <p>Now I save it using </p>
  
  <pre><code>np.save('tr_tfidf_q1.npy', tr_tfidf_q1)
  </code></pre>
  
  <p>When I load the file like this</p>
  
  <pre><code>f = np.load('tr_tfidf_q1.npy') 
  f.shape() ## returns an empty array.
  ()
  </code></pre>
  
  <p>Thanks in advance.</p>