title: numpy -Create a 4 x 4 matrix and add values 4,5,6 above the parent diagonal
body: <p>Create a 4 x 4 matrix and add values 4,5,6 above the parent diagonal.I'm unable to understand how to achieve this output. Tried diagonal method but failed. I want the output as shown below.</p>
  
  <pre><code>            [[0 4 0 0]
               [0 0 5 0]
               [0 0 0 6]
              [0 0 0 0]]
  </code></pre>