title: Append two strings as a single element to a Python list
body: <p>I want to append two strings as a single element to a Python list. This is a simplified example of my problem:</p>
  
  <pre><code>lowerCase = [['a', 'b', 'c', 'd', 'e']]
  newList = []
  
  # Append two pieces of data as a single element
  i = 1;
  for letter in lowerCase[0]:
      [newList.append(letter), newList.append(i)]
      i += 1
  
  print newList
  print len(newList)
  </code></pre>
  
  <p>What I get:</p>
  
  <pre><code>['a', 1, 'b', 2, 'c', 3, 'd', 4, 'e', 5]
  10
  </code></pre>
  
  <p>What I want:</p>
  
  <pre><code>[['a', 1], ['b', 2], ['c', 3], ['d', 4], ['e', 5]]
  5
  </code></pre>