code: def build_request(self, path, query_parameters):
          
          url = 'https://api.uber.com/v1' + self.sanitise_path(path)
          url += '?' + urlencode(query_parameters)
  
          return url
docs: Build the HTTP request by adding query parameters to the path.
          :param path: API endpoint/path to be used.
          :param query_parameters: Query parameters to be added to the request.
          :return: string