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#!/usr/bin/python3 student = ({'Tom', 'Jim', 'Mary', 'Tom', 'Jack', 'Rose'}) print(student) # 输出集合,重复的元素被自动去掉 # 成员测试 if('Rose' in student) : print('Rose 在集合中') else : print('Rose 不在集合中') # set可以进行集合运算 a = set('abracadabra') b = set('alacazam') print(a) print(a - b) # a和b的差集 print(a | b) # a和b的并集 print(a & b) # a和b的交集 print(a ^ b) # a和b中不同时存在的元素
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