old_contents: from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from ella.core.models import Publishable
  
  class Article(Publishable):
      """
      ``Article`` is the most common publishable object. It can be used for 
      news on internet news pages, blog posts on smaller blogs or even for 
      news on an organization's home page.
      """
      content = models.TextField(_('Content'), default='')
  
      class Meta:
          verbose_name = _('Article')
          verbose_name_plural = _('Articles')
  
  
  
  
new_contents: from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from ella.core.models import Publishable
  
  
  class Article(Publishable):
      """
      ``Article`` is the most common publishable object. It can be used for
      news on internet news pages, blog posts on smaller blogs or even for
      news on an organization's home page.
      """
      content = models.TextField(_('Content'), default='')
  
      class Meta:
          verbose_name = _('Article')
          verbose_name_plural = _('Articles')
  
subject: Fix pep8 on Articles models: E303 too many blank lines