title: Combine elements from two lists
body: <p>I want to merge two arrays in python in a special way. 
  The entries with an odd index of my output array <code>out</code> shall be the coresponding entries of my first input array <code>in0</code>. The entries with an even index in <code>out</code> shall be the coresponding entries of my second input array 
  <code>in1</code>.</p>
  
  <p><code>in0</code>, <code>in1</code> and <code>out</code> are all the same length.</p>
  
  <p>Example:</p>
  
  <p>The input arrays</p>
  
  <pre><code>in0 = [0, 1, 2, 3]
  in1 = [4, 5, 6, 7]
  </code></pre>
  
  <p>shall be merge to the output array</p>
  
  <pre><code>out = [0, 5, 2, 7]
  </code></pre>
  
  <p>Is there a nicer way than to loop over the whole length of the inputs and fill my <code>out</code> 'by hand'?</p>