title: Jinja2: Looking for a View-Helper
body: <p>I'am new to the Jinja2 template engine. Is there something like the view-helpers from Zend Framework? Can i create simple functions and reuse them all over all my template-files?</p>
  
  <p>Something like this?</p>
  
  <pre><code>#somewhere in my python code:
  def nice_demo_function(message):
      """"return a simple message"""
      return message
  </code></pre>
  
  <p>So i can to use that:</p>
  
  <pre><code>&lt;!-- now in my template-file --&gt;
  {%  nice_demo_function('yes, this works great!') %}
  </code></pre>