title: Get average of times
body: <p>Given the following list:</p>
  
  <pre><code>times = [datetime.timedelta(0, 1, 256273), datetime.timedelta(0, 0, 910417), datetime.timedelta(0, 0, 388175)]
  </code></pre>
  
  <p>How would I get the average of times? Doing the following gives me an error:</p>
  
  <pre><code>avg = (float(sum(times)) / len(times))
  TypeError: unsupported operand type(s) for +: 'int' and 'datetime.timedelta'
  </code></pre>