'''集合：可变的数据类型，他里面的元素必须是不可变的数据类型，无序，不重复。     {}'''# set1 = set({1,2,3})# set2 = {1,2,3,[2,3],{'name':'alex'}}  # 错的# print(set1)# print(set2)# set1 = {'alex','wusir','ritian','egon','barry',}#增#add# set1.add('女神')# print(set1)#update# set1.update('abc')# print(set1)#删除# set1.pop()  # 随机删除# print(set1.pop())  # 有返回值# print(set1)# set1.remove('alex')  # 按元素# print(set1)#{} set()# set1.clear()# print(set1)  # set()# del set1# print(set1)#查# for i in set1:#     print(i)# set1 = {1,2,3,4,5}# set2 = {4,5,6,7,8}# set3 = set1 & set2# print(set3)  # {4, 5}# print(set1.intersection(set2))  # {4, 5}# set1 = {1,2,3,4,5}# set2 = {4,5,6,7,8}# print(set1 | set2)  # {1, 2, 3, 4, 5, 6, 7,8}# print(set2.union(set1))  # {1, 2, 3, 4, 5, 6, 7}# set1 = {1,2,3,4,5}# set2 = {4,5,6,7,8}# print(set1 ^ set2)  # {1, 2, 3, 6, 7, 8}# print(set1.symmetric_difference(set2))  # {1, 2, 3, 6, 7, 8}# set1 = {1,2,3,4,5}# set2 = {4,5,6,7,8}# print(set1 - set2)  # {1, 2, 3}# #set1独有的# print(set1.difference(set2))  # {1, 2, 3}# set1 = {1,2,3,}# set2 = {1,2,3,4,5,6}## print(set1 < set2)# print(set1.issubset(set2))  # 这两个相同，都是说明set1是set2子集。# print(set2 > set1)# print(set2.issuperset(set1))  # 这两个相同，都是说明set2是set1超集。#去重# li = [1,2,33,33,2,1,4,5,6,6]# set1 = set(li)# # print(set1)# li = list(set1)# print(li)# s1 = {1,2,3}# print(s1,type(s1))# s = frozenset('barry')# print(s,type(s))# for i in s:#     print(i)