set常用操作
1 old_dic = {"1": 11, "2": 22, "3": 100} 2 3 new_dic = {"1": 33, "4": 22, "7": 100} 4 5 tup = (1, 4, 5, 6, 7, 4) 6 # 创建set集合 无序 不重复 7 oldSet = set(old_dic.keys()) 8 newSet = set(new_dic.keys()) 9 tupSet = set(tup) 10 # 并集 11 print(oldSet | newSet) 12 # 交集 13 print(newSet & oldSet) 14 # 差集 15 print(oldSet - newSet) 16 print(newSet - oldSet) 17 # 添加 返回None / 没有返回值 18 oldSet.add(4) 19 20 print(tupSet)
