我有像下面这样的数据,标签被限制在其中。-21 6-21 ' as col from dualselect '6-20 6-20 6-20 6-20 6-20 ' from dualselect '6-9 6-96-96-96-96-96-9 ' from dual)Mon: 6-21, Tue: 6-21, Wed:
我收到了错误消息:"AttributeError:'str‘对象没有属性'append'“,代码如下:"""Returns mimic dict mappingeach word to list of words which follow it."""f = open(filename, 'r')spli