title: pprint jinja2 debug variable helper
body: <p>I'm trying to use <a href="http://jinja.pocoo.org/docs/dev/templates/#pprint" rel="noreferrer">http://jinja.pocoo.org/docs/dev/templates/#pprint</a> <code>pprint</code> function like this:</p>
  
  <p><code>{{ pprint(player) }}</code> in my html file, but I get the following error:</p>
  
  <pre><code>jinja2.exceptions.UndefinedError
  UndefinedError: 'pprint' is undefined
  </code></pre>
  
  <p>Jinja2 is a template engine for python.
  Anyone could help me to display variables for easy debug?</p>