title: Sorting a dictionary with lists as values, according to an element from the list
body: <p>I want to sort a dictionary of lists, by third item in each list. It's easy enough sorting a dictionary by value when the value is just a single number or string, but this list thing has me baffled.</p>
  <p>Example:</p>
  <pre><code>myDict = {'item1': [7, 1, 9], 'item2': [8, 2, 3], 'item3': [9, 3, 11] }
  </code></pre>
  <p>I want to be able to iterate through the dictionary in order of the third value in each list, in this case <code>item2</code>, <code>item1</code> then <code>item3</code>.</p>