title: No module named helpers
body: <p>
  I trying to <strong>import helpers</strong> when I run <a href="https://github.com/ematvey/tensorflow-seq2seq-tutorials/blob/master/1-seq2seq.ipynb" rel="nofollow noreferrer">this tutorial</a>
  . However, this reported a error: ImportError: No module named helpers. I can't find any proper package in pypi. How can I get the third party package?</p>
  
  <p>The following is the tutorial fragment</p>
  
  <pre><code>In [1]:
  x = [[5, 7, 8], [6, 3], [3], [1]]
  While manipulating such variable-length lists are convenient to humans, RNNs prefer a different layout:
  In [2]:
  import helpers
  xt, xlen = helpers.batch(x)
  In [3]:
  x
  Out[3]:
  [[5, 7, 8], [6, 3], [3], [1]]
  In [4]:
  xt
  Out[4]:
  array([[5, 6, 3, 1],
         [7, 3, 0, 0],
         [8, 0, 0, 0]], dtype=int32)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/KnfVb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KnfVb.png" alt="Codes following"></a></p>
  
  <p>Notes: <strong>Helpers is not Helper</strong></p>