title: How to skip one element in numpy array
body: <p>Suppose I have an array like:</p>
  
  <pre><code>from numpy import array
  a = array([[[1,2,3]]])
  </code></pre>
  
  <p>How can I make right indexing to get a view array like:</p>
  
  <pre><code>array([[[1,3]]])
  </code></pre>