title: Enumerate two python lists simultaneously?
body: <p>How do I enumerate two lists of equal length simultaneously?
  I am sure there must be a more pythonic way to do the following:</p>
  
  <pre><code>for index, value1 in enumerate(data1):
      print index, value1 + data2[index]
  </code></pre>
  
  <p>I want to use the index and data1[index] and data2[index] inside the for loop.</p>