old_contents: import requests
  from statscraper import Dataset
  
  class BRA():
      """Scraper for Brottsförebyggande rådet."""
      url = 'http://statistik.bra.se'
  
      def describe(self):
          """Display metadata for a dataset."""
          raise NotImplementedError
  
      def select(self, fragment):
          raise NotImplementedError
  
      def unselect(self):
          raise NotImplementedError
  
      def reset(self):
          raise NotImplementedError
  
      @property
      def topics(self):
          raise NotImplementedError
  
      def fetch(self, params):
          """Fetch a dataset."""
          raise NotImplementedError
  
      def __repr__(self):
          return '<BRA instance: %s>' % self.url
  
new_contents: # encoding: utf-8
  
  
  class BRA():
      """Scraper for Brottsförebyggande rådet."""
      url = 'http://statistik.bra.se'
  
      def describe(self):
          """Display metadata for a dataset."""
          raise NotImplementedError
  
      def select(self, fragment):
          raise NotImplementedError
  
      def unselect(self):
          raise NotImplementedError
  
      def reset(self):
          raise NotImplementedError
  
      @property
      def topics(self):
          raise NotImplementedError
  
      def fetch(self, params):
          """Fetch a dataset."""
          raise NotImplementedError
  
      def __repr__(self):
          return '<BRA instance: %s>' % self.url
  
subject: add encoding, remove unused dep