title: Count vs len on a Django QuerySet
body: <p>In Django, given that I have a <code>QuerySet</code> that I am going to iterate over and print the results of, what is the best option for counting the objects? <code>len(qs)</code> or <code>qs.count()</code>?</p>
  
  <p>(Also given that counting the objects in the same iteration is not an option.)</p>