title: Adding elements to numpy array
body: <p>Using NumPy: </p>
  
  <pre><code>X= numpy.zeros(shape=[1, 4], dtype=np.int)
  </code></pre>
  
  <p>How can I add a list, such as <code>[1,2,3,4]</code>? I tried <code>numpy.add(X,[1,2,3,4])</code> and <code>np.hstack((1,2,3,4))</code> but none of them work!  </p>
  
  <p>I know how to use that in standard Python list using <code>append</code> method but I want to use numpy for performance.</p>