old_contents: import os
  import functools
  import logging
  
  import six
  
  from pelican.utils import (slugify, python_2_unicode_compatible)
  
  logger = logging.getLogger(__name__)
  
  
  @python_2_unicode_compatible
  @functools.total_ordering
  class URLWrapper(object):
      def __init__(self, name, settings):
          self.name = name
          self.slug = slugify(self.name)
          self.settings = settings
  
      def as_dict(self):
          return self.__dict__
  
      def __hash__(self):
          return hash(self.name)
  
      def _key(self):
          return self.name
  
      def _normalize_key(self, key):
          return six.text_type(key)
  
      def __eq__(self, other):
          return self._key() == self._normalize_key(other)
  
      def __ne__(self, other):
          return self._key() != self._normalize_key(other)
  
      def __lt__(self, other):
          return self._key() < self._normalize_key(other)
  
      def __str__(self):
          return self.name
  
      def _from_settings(self, key, get_page_name=False):
          """Returns URL information as defined in settings.
  
          When get_page_name=True returns URL without anything after {slug} e.g.
          if in settings: CATEGORY_URL="cat/{slug}.html" this returns
          "cat/{slug}" Useful for pagination.
  
          """
          setting = "%s_%s" % (self.__class__.__name__.upper(), key)
          value = self.settings[setting]
          if not isinstance(value, six.string_types):
              logger.warning('%s is set to %s' % (setting, value))
              return value
          else:
              if get_page_name:
                  return os.path.splitext(value)[0].format(**self.as_dict())
              else:
                  return value.format(**self.as_dict())
  
      page_name = property(functools.partial(_from_settings, key='URL',
                           get_page_name=True))
      url = property(functools.partial(_from_settings, key='URL'))
      save_as = property(functools.partial(_from_settings, key='SAVE_AS'))
  
  
  class Category(URLWrapper):
      pass
  
  
  class Tag(URLWrapper):
      def __init__(self, name, *args, **kwargs):
          super(Tag, self).__init__(name.strip(), *args, **kwargs)
  
  
  class Author(URLWrapper):
      pass
  
new_contents: import os
  import functools
  import logging
  
  import six
  
  from pelican.utils import (slugify, python_2_unicode_compatible)
  
  logger = logging.getLogger(__name__)
  
  
  @python_2_unicode_compatible
  @functools.total_ordering
  class URLWrapper(object):
      def __init__(self, name, settings):
          self.name = name
          self.slug = slugify(self.name)
          self.settings = settings
  
      def as_dict(self):
          return self.__dict__
  
      def __hash__(self):
          return hash(self.name)
  
      def _key(self):
          return self.name
  
      def _normalize_key(self, key):
          return six.text_type(key)
  
      def __eq__(self, other):
          return self._key() == self._normalize_key(other)
  
      def __ne__(self, other):
          return self._key() != self._normalize_key(other)
  
      def __lt__(self, other):
          return self._key() < self._normalize_key(other)
  
      def __str__(self):
          return self.name
  
      def __repr__(self):
          return '<{} {}>'.format(type(self).__name__, str(self))
  
      def _from_settings(self, key, get_page_name=False):
          """Returns URL information as defined in settings.
  
          When get_page_name=True returns URL without anything after {slug} e.g.
          if in settings: CATEGORY_URL="cat/{slug}.html" this returns
          "cat/{slug}" Useful for pagination.
  
          """
          setting = "%s_%s" % (self.__class__.__name__.upper(), key)
          value = self.settings[setting]
          if not isinstance(value, six.string_types):
              logger.warning('%s is set to %s' % (setting, value))
              return value
          else:
              if get_page_name:
                  return os.path.splitext(value)[0].format(**self.as_dict())
              else:
                  return value.format(**self.as_dict())
  
      page_name = property(functools.partial(_from_settings, key='URL',
                           get_page_name=True))
      url = property(functools.partial(_from_settings, key='URL'))
      save_as = property(functools.partial(_from_settings, key='SAVE_AS'))
  
  
  class Category(URLWrapper):
      pass
  
  
  class Tag(URLWrapper):
      def __init__(self, name, *args, **kwargs):
          super(Tag, self).__init__(name.strip(), *args, **kwargs)
  
  
  class Author(URLWrapper):
      pass
  
subject: Add URLWrapper.__repr__