title: List of dicts to/from dict of lists
body: <p>I am looking to change back and forth between a dictionary of lists (all of the same length):</p>
  
  <pre><code>DL = {'a': [0, 1], 'b': [2, 3]}
  </code></pre>
  
  <p>and a list of dictionaries:</p>
  
  <pre><code>LD = [{'a': 0, 'b': 2}, {'a': 1, 'b': 3}]
  </code></pre>
  
  <p>I am looking for the cleanest way to switch between the two forms.</p>