title: converting a string into a numpy array
body: <p>I have the string :</p>
  
  <pre><code>'0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,73-100,100-51,51,51,51-100,100-52,52,52,52,52,52,52,52,52-100,100-71,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0'
  </code></pre>
  
  <p>I basically want to feed a dataframe with a columns of strings like above to a 1D CNN for binary classification so I need to convert them to numpy arrays before training a model.</p>
  
  <p>how can I convert these strings to a numpy array and save its features considering the character <code>"-"</code> between some numbers?</p>