title: How to define a default value for a custom Django setting
body: <p>The Django documentation <a href="http://docs.djangoproject.com/en/dev/topics/settings/#creating-your-own-settings" rel="noreferrer">mentions</a> that you can add your own settings to <code>django.conf.settings</code>. So if my project's <code>settings.py</code> defines</p>
  
  <pre><code>APPLES = 1
  </code></pre>
  
  <p>I can access that with <code>settings.APPLES</code> in my apps in that project.</p>
  
  <p>But if my <code>settings.py</code> doesn't define that value, accessing <code>settings.APPLES</code> obviously won't work. Is there some way to define a default value for <code>APPLES</code> that is used if there is no explicit setting in <code>settings.py</code>?</p>
  
  <p>I'd like best to define the default value in the module/package that requires the setting.</p>