title: How to create 4d Array in Python
body: <p>Assist me in creating 4d array. Below is my code for 3 dimension array. 
  How do i get output in shape of (4,3,2,3)</p>
  
  <pre><code>Three_d_array - numpy.array([[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]])
  </code></pre>
  
  <p>The above code provides output in shape of (3,2,3) but how to i get the 4d in this shape</p>