title: Grouping Conditions in Django template if statement
body: <p>I would like to negate the result of a group of conditions separated ors in an if statement in a django template.
  Heres my code</p>
  
  <pre><code>{% if not (owner.home_number or owner.work_number or owner.mobile_number) %}
      No contact number available
  {% endif %}
  </code></pre>
  
  <p>I am currently getting this error</p>
  
  <blockquote>
    <p>TemplateSyntaxError: Could not parse the remainder:
    '(owner.home_number' from '(owner.home_number'</p>
  </blockquote>