title: List PyPI packages by popularity
body: <p>Is it possible to obtain a list of PyPI packages ordered by popularity (number of total downloads)?</p>
  
  <p>I am unable to find a way to do this on PyPI. Perhaps PyPI provides a database dump for this purpose?</p>
  
  <p>If I'm unable to find a simpler way, I plan to scrape PyPI using their JSON API.</p>