new_contents: import requests
  import json
  from ..scraper import Scraper
  
  
  class LayersScraper(Scraper):
      """A superclass for scraping Layers of the UofT Map.
  
      Map is located at http://map.utoronto.ca
      """
  
      def __init__(self, name, output_location='.'):
          super().__init__(name, output_location)
  
          self.host = 'http://map.utoronto.ca/'
          self.s = requests.Session()
  
      def get_layers_json(self, campus):
          """Retrieve the JSON structure from host."""
  
          self.logger.info('Scraping map layers %s.' % campus)
  
          headers = {
              'Referer': self.host
          }
          html = self.s.get('%s%s%s' % (self.host, 'data/map/', campus),
                            headers=headers).text
          data = json.loads(html)
          return data['layers']
  
      @staticmethod
      def get_value(self, entry, val, number=False):
          """Retrieve the desired value from the parsed response dictionary."""
  
          if val in entry.keys():
              return entry[val]
          else:
              return 0 if number else ''
  
subject: Initialize Layers superclass