title: single list to dictionary
body: <p>I have this list:</p>
  
  <pre><code>single = ['key1', 'value1', 'key2', 'value2', 'key3', 'value3']
  </code></pre>
  
  <p>What's the best way to create a dictionary from this?</p>
  
  <p>Thanks.</p>