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1、会删除重复的值
2、会打乱集合内的值
wenyi_girlfriend_set = {'fanping', 'zhuping', 'qiangge', 'changyi', 'muzhiguniang1', 'muzhiguniang1','nick'} zhuping_jiyou_set = {'fanping', 'wenynyi', 'qiange', 'wuzhiguniang'} print(wenyi_girlfriend_set)
{'fanping', 'nick', 'muzhiguniang1', 'changyi', 'qiangge', 'zhuping'}
wenyi_freind_list = ['ruhua','suiyue','suiyue'] print(set(wenyi_freind_list)) # def set(wenyi_freind_list): # s = set() # for i in wenyi_freind_list: # s.add(i) # print(s)
{'suiyue', 'ruhua'}
print(len(wenyi_girlfriend_set))
6
print('fanping'in wenyi_girlfriend_set)
true
print(wenyi_girlfriend_set.union(zhuping_jiyou_set)) print(wenyi_girlfriend_set | (zhuping_jiyou_set))
{'fanping', 'nick', 'wuzhiguniang', 'muzhiguniang1', 'wenynyi', 'changyi', 'qiange', 'qiangge', 'zhuping'} {'fanping', 'nick', 'wuzhiguniang', 'muzhiguniang1', 'wenynyi', 'changyi', 'qiange', 'qiangge', 'zhuping'}
print(wenyi_girlfriend_set.intersection(zhuping_jiyou_set)) print(wenyi_girlfriend_set & (zhuping_jiyou_set))
{'fanping'} {'fanping'}
print(wenyi_girlfriend_set.difference(zhuping_jiyou_set)) print(wenyi_girlfriend_set - (zhuping_jiyou_set))
{'nick', 'muzhiguniang1', 'changyi', 'qiangge', 'zhuping'} {'nick', 'muzhiguniang1', 'changyi', 'qiangge', 'zhuping'}
print(wenyi_girlfriend_set.symmetric_difference(zhuping_jiyou_set)) print(wenyi_girlfriend_set ^ (zhuping_jiyou_set))
{'zhuping', 'nick', 'wenynyi', 'muzhiguniang1', 'changyi', 'qiange', 'qiangge', 'wuzhiguniang'} {'zhuping', 'nick', 'wenynyi', 'muzhiguniang1', 'changyi', 'qiange', 'qiangge', 'wuzhiguniang'}
print(wenyi_girlfriend_set == zhuping_jiyou_set)
false
print(wenyi_girlfriend_set > zhuping_jiyou_set) print(wenyi_girlfriend_set.issuperset(zhuping_jiyou_set))
false false
print(wenyi_girlfriend_set < zhuping_jiyou_set) print(wenyi_girlfriend_set.issubset(zhuping_jiyou_set))
false false
s={1,2,'a'} s.add(3) print(s)
{3, 1, 2, 'a'}
s.remove(2) print(s)
{3, 1, 'a'}
s1 = {1,2,3,'a'} s2 = {1,2,'a'} print(s1.difference_update(s2)) print(s1)
none {3}
print(s1.isdisjoint(s2))
true
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