old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  #from django.conf import settings
  #from django.utils.importlib import import_module
  from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from opps.core.models import Publishable, BaseBox
  
  
  try:
      OPPS_APPS = tuple([(u"{0}.{1}".format(
          app._meta.app_label, app._meta.object_name), u"{0} - {1}".format(
              app._meta.app_label, app._meta.object_name))
          for app in models.get_models() if 'opps.' in app.__module__])
  except ImportError:
      OPPS_APPS = tuple([])
  
  
  class QuerySet(Publishable):
      name = models.CharField(_(u"Dynamic queryset name"), max_length=140)
      slug = models.SlugField(
          _(u"Slug"),
          db_index=True,
          max_length=150,
          unique=True,
      )
  
      model = models.CharField(_(u'Model'), max_length=150, choices=OPPS_APPS)
      limit = models.PositiveIntegerField(_(u'Limit'), default=7)
      order = models.CharField(_('Order'), max_length=1, choices=(
          ('-', 'DESC'), ('+', 'ASC')))
      channel = models.ForeignKey(
          'channels.Channel',
          verbose_name=_(u"Channel"),
      )
  
  
  
  class DynamicBox(BaseBox):
  
      dynamicqueryset = models.ForeignKey(
          'boxes.QuerySet',
          verbose_name=_(u'Query Set')
      )
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  #from django.conf import settings
  #from django.utils.importlib import import_module
  from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from opps.core.models import Publishable, BaseBox
  
  
  try:
      OPPS_APPS = tuple([(u"{0}.{1}".format(
          app._meta.app_label, app._meta.object_name), u"{0} - {1}".format(
              app._meta.app_label, app._meta.object_name))
          for app in models.get_models() if 'opps.' in app.__module__])
  except ImportError:
      OPPS_APPS = tuple([])
  
  
  class QuerySet(Publishable):
      name = models.CharField(_(u"Dynamic queryset name"), max_length=140)
      slug = models.SlugField(
          _(u"Slug"),
          db_index=True,
          max_length=150,
          unique=True,
      )
  
      model = models.CharField(_(u'Model'), max_length=150, choices=OPPS_APPS)
      limit = models.PositiveIntegerField(_(u'Limit'), default=7)
      order = models.CharField(_('Order'), max_length=1, choices=(
          ('-', 'DESC'), ('+', 'ASC')))
      channel = models.ForeignKey(
          'channels.Channel',
          verbose_name=_(u"Channel"),
      )
  
  
  class DynamicBox(BaseBox):
  
      dynamicqueryset = models.ForeignKey(
          'boxes.QuerySet',
          verbose_name=_(u'Query Set')
      )
  
subject: fix pep8, opps/boxes/models.py:40:1: E303 too many blank lines (3)