摘要： list_1 = set([1,2,3,4,5,6])list_2 = set([5,6,7,8,9,10])print(list_1.intersection(list_2)) #交集print(list_1.union(list_2)) #并集print(list_1.difference(li 阅读全文

摘要： The following code is 3 level menu, which is based on the list. But there is still some errors I can't fix them: we can't go back main menu by pressin 阅读全文