title: Print the values of torch.data.dataset object
body: <p>I have made my pandas dataframe <code>X_train</code> into <code>z</code> tensor but the output is </p>
  
  <pre><code>user_id=torchtext.data.RawField()
  fields=[('user_id',user_id)]
  from torchtext.data import Dataset,Example
  z=torchtext.data.Dataset(X_train.user_id,fields)
  print(len(z))
  print(z)
  </code></pre>
  
  <p>Ouput is:</p>
  
  <pre><code>426018
  &lt;torchtext.data.dataset.Dataset object at 0x7feffb6a8f98&gt;
  </code></pre>
  
  <p>How should I print the actual data in my variable object z?</p>