code: def from_object(orm_class, engine_or_session, limit=None, **kwargs):
      
  
      ses, auto_close = ensure_session(engine_or_session)
      query = ses.query(orm_class)
      if limit is not None:
          query = query.limit(limit)
      result_proxy = execute_query_return_result_proxy(query)
      if auto_close:
          ses.close()
      return from_db_cursor(result_proxy.cursor)
docs: Select data from the table defined by a ORM class, and put into prettytable
  
      :param orm_class: an orm class inherit from
          ``sqlalchemy.ext.declarative.declarative_base()``
  
      :type engine_or_session: Union[Engine, Session]
      :param engine_or_session: the engine or session used to execute the query.
  
      :type limit: int
      :param limit: int, limit rows to return.
  
      :rtype: PrettyTable
  
      **中文文档**
  
      将数据对象的数据放入 PrettyTable 中.
  
      常用于快速预览某个对象背后的数据.