public methods def init (self)"""create an empty list of favorites ""will be list of item instances self data positionallistdef len (self)"""return number of entries on favorites list ""return len(self datadef is empty(self)"""return true if list is empty ""return len(self data= def access(selfe)"""access element ethereby increasing its access count ""try to locate existing element self find position(eif is nonep self data add last(self item( )if newplace at end always increment count elementcount + consider moving forward self move up(pdef remove(selfe)"""remove element from the list of favorites ""try to locate existing element self find position(eif is not nonedeleteif found self data delete(pdef top(selfk)"""generate sequence of top elements in terms of access count ""if not < <len(self)raise valueerrorillegal value for walk self data firstfor in range( )item walk elementelement of list is item report user' element yield item value walk self data after(walkcode fragment class favoriteslist (continued from code fragment