title: How to truncate the time on a datetime object?
body: <p>What is a classy way to way truncate a python <code>datetime</code> object?</p>
  <p>In this particular case, to the day. So basically setting hour, minute, seconds, and microseconds to 0.</p>
  <p>I would like the output to also be a <code>datetime</code> object, not a string.</p>