code: def export_features(self, delimiter='\\'):
          
          result_list = []
          for feature in self.features:
              result = '{}{}{}'.format(self.name, delimiter, feature)
              result_list.append(result)
          return result_list
docs: Export the features from this namespace as a list of feature tokens
          with the namespace name prepended (delimited by 'delimiter').
  
          Example:
          >>> namespace = Namespace('name1', features=['feature1', 'feature2'])
          >>> print namespace.export_features()
          ['name1\\feature1', 'name1\\feature2']