title: What is the purpose of app.py in django apps?
body: <p>In Django 1.4 and above :</p>
  
  <blockquote>
    <p>There is a new file called <code>app.py</code> in every django application. It defines the scope of the app and some initials required when loaded.</p>
  </blockquote>
  
  <p>Why don't they use <code>__init__.py</code> for the purpose? Any advantage over <code>__init__.py</code> approach? Can you link to some official documentation for the same?</p>