text: from functools import wraps
  
  from django.core.exceptions import ObjectDoesNotExist, ImproperlyConfigured
  from django.db.models.loading import get_apps, get_app_path, get_app_paths, get_app, get_models, get_model, register_models, UnavailableApp
  from django.db.models.query import Q, QuerySet
  from django.db.models.expressions import F
  from django.db.models.manager import Manager
  from django.db.models.base import Model
  from django.db.models.aggregates import *
  from django.db.models.fields import *
  from django.db.models.fields.subclassing import SubfieldBase
  from django.db.models.fields.files import FileField, ImageField
  from django.db.models.fields.related import ForeignKey, ForeignObject, OneToOneField, ManyToManyField, ManyToOneRel, ManyToManyRel, OneToOneRel
  from django.db.models.deletion import CASCADE, PROTECT, SET, SET_NULL, SET_DEFAULT, DO_NOTHING, ProtectedError
  from django.db.models import signals
  
  
  def permalink(func):
      """
      Decorator that calls urlresolvers.reverse() to return a URL using
      parameters returned by the decorated function "func".
  
      "func" should be a function that returns a tuple in one of the
      following formats:
          (viewname, viewargs)
          (viewname, viewargs, viewkwargs)
      """
      from django.core.urlresolvers import reverse
  
      @wraps(func)
      def inner(*args, **kwargs):
          bits = func(*args, **kwargs)
          return reverse(bits[0], None, *bits[1:3])
      return inner
  