code: def get_duplicated_model(class_inst, new_class_name):
      
      # Ref: http://www.cnblogs.com/Jerryshome/archive/2012/12/21/2827492.html
      # get caller stack frame
      # caller_frame = inspect.currentframe()
      caller_frame_record = inspect.stack()[1]
  
      # parse module name
      module = inspect.getmodule(caller_frame_record[0])
      return ModelDuplicator(module.__name__).get_duplicated_model(class_inst, new_class_name)
docs: Duplicate the model fields from class_inst to new_class_name, example:
      NewClass = get_duplicated_model(OldClass, "NewClass")
      :param class_inst:
      :param new_class_name:
      :return: