title: Is column selection in pytorch differentiable?
body: <p>Is column selection in Pytorch differentiable? for eg if I want to select a single column from each row to make a new row X 1 array and then backdrop using this new array, will the backdrop work properly? </p>
  
  <pre><code>qvalues = qvalues[range(5),[0,1,0,1,0]]
  </code></pre>
  
  <p>if element selection is done as shown above from a 5*2 tensor?</p>