Django snippets

from django.contrib.contenttypes.models import ContentType

class GetAllModels(object):
    ''' an iterator function to produce model names installed as choices format '''
    def __init__(self,counter=0):
        self.counter = counter
    def __iter__(self):
        return self
    def next(self):
        ct = ContentType.objects.all()
        if self.counter < len(ct)-1 :
            self.counter = self.counter +1
            return (ct[self.counter].app_label, ct[self.counter].model)
        else:
            raise StopIteration