title: Why is np.pad not working the way I expect it to?
body: <p>My code generates an array that is 4x2.
  It also generates another array that is 10x6
  I want to pad each array with zeros so that it is centered in an array that is 14x12 after padding. </p>
  
  <p><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.pad.html" rel="nofollow noreferrer">https://docs.scipy.org/doc/numpy/reference/generated/numpy.pad.html</a></p>
  
  <pre><code>a = some array 4x2
  b = some array 10x6
  c = np.pad(a, padder=0, 2, 'pad_width', padder=0))
  </code></pre>
  
  <p>TypeError: pad() takes exactly 3 arguments (2 given)</p>