code: def get(api_code=None):
      
      
      resource = 'stats?format=json'
      if api_code is not None:
          resource += '&api_code=' + api_code
      response = util.call_api(resource)
      json_response = json.loads(response)
      return Stats(json_response)
docs: Get network statistics.
      
      :param str api_code: Blockchain.info API code (optional)
      :return: an instance of :class:`Stats` class