title: ImportError: cannot import name <model_class>
body: <p>I am using <code>forms.ModelChoiceField</code> to have the choice loaded from a specific model entries:</p>
  
  <pre><code>from order.models import Region
  
  class CheckoutForm(forms.Form):
      area = forms.ModelChoiceField(queryset=Region.objects.all(),label=("Area"))
  </code></pre>
  
  <p>The problem I am facing is that when importing the class name from the app. I get the error: </p>
  
  <blockquote>
    <p>ImportError: cannot import name Region</p>
  </blockquote>
  
  <p>Please not that <code>from order.models import Region</code> is working when testing it independently in the shell.</p>
  
  <p>Any Idea what is causing so?</p>
  
  <pre><code>Traceback (most recent call last):
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 92, in inner_run
      self.validate(display_num_errors=True)
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 280, in validate
      num_errors = get_validation_errors(s, app)
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/core/management/validation.py", line 35, in get_validation_errors
      for (app_name, error) in get_app_errors().items():
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/db/models/loading.py", line 166, in get_app_errors
      self._populate()
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/db/models/loading.py", line 75, in _populate
      self.load_app(app_name)
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/db/models/loading.py", line 96, in load_app
      models = import_module('.models', app_name)
    File "/home/salma/venv/local/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
      __import__(name)
    File "/home/salma/Projects/Morabiz/Saludable/saludable_django/landing/models.py", line 2, in &lt;module&gt;
      from order.models import Dish
    File "/home/salma/Projects/Morabiz/Saludable/saludable_django/order/models.py", line 4, in &lt;module&gt;
      from order.forms import RegistrationFormNoUserName
    File "/home/salma/Projects/Morabiz/Saludable/saludable_django/order/forms.py", line 7, in &lt;module&gt;
      from order.models import Region
  ImportError: cannot import name Region
  </code></pre>