old_contents: from straight.plugin import load as plugin_load
  
  
  class Format(object):
      @classmethod
      def name(cls):
          """Get the format's name.
  
          An format's canonical name is the lowercase name of the class
          implementing it.
  
          >>> Format().name()
          'format'
          """
          return cls.__name__.lower()
  
      def read(self, stream):
          """Read style from *stream* according to the format.
          """
          raise NotImplementedError
  
      def write(self, stream):
          """Write style to *stream* according to the format.
          """
          raise NotImplementedError
  
  
  class PluginError(Exception):
      pass
  
  
  def find_formats():
      plugins = plugin_load('pygout.formats', subclasses=Format)
      formats = {}
  
      for p in plugins:
          if p.name() in formats:
              raise PluginError(('Duplicate format: '
                  '{e.__module__}.{e.__name__} and '
                  '{n.__module__}.{n.__name__}').format(e=formats[p.name()],
                                                        n=p))
          else:
              formats[p.name()] = p
  
      return formats
  
new_contents: from straight.plugin import load as plugin_load
  
  
  class Format(object):
      @classmethod
      def name(cls):
          """Get the format's name.
  
          An format's canonical name is the lowercase name of the class
          implementing it.
  
          >>> Format().name()
          'format'
          """
          return cls.__name__.lower()
  
      def read(self, stream):
          """Read style from *stream* according to the format.
          """
          raise NotImplementedError
  
      def write(self, style, stream):
          """Write *style* to *stream* according to the format.
          """
          raise NotImplementedError
  
  
  class PluginError(Exception):
      pass
  
  
  def find_formats():
      plugins = plugin_load('pygout.formats', subclasses=Format)
      formats = {}
  
      for p in plugins:
          if p.name() in formats:
              raise PluginError(('Duplicate format: '
                  '{e.__module__}.{e.__name__} and '
                  '{n.__module__}.{n.__name__}').format(e=formats[p.name()],
                                                        n=p))
          else:
              formats[p.name()] = p
  
      return formats
  
subject: Fix stupid oops in Format interface