title: Register every table/class from an app in the Django admin page
body: <p>I have an app named <code>doors</code> and my <code>models.py</code> for the app has 10 tables/class. Under my <code>admin.py</code>, how do I register every model in the file <code>models.py</code>?</p>
  
  <p>For example, currently I have to hardcode it:</p>
  
  <pre><code>from django.contrib import admin
  from doors.models import *
  
  admin.site.register(Group)
  admin.site.register(Item)
  admin.site.register(ItemType)
  admin.site.register(Location)
  admin.site.register(Log)
  admin.site.register(Order)
  admin.site.register(Property)
  admin.site.register(User)
  admin.site.register(Vendor)
  </code></pre>
  
  <p>Is there a way I perhaps find every class in <code>models.py</code> and loop through and register each class? Or is there some kind of wildcard I can use with Django?</p>