【Python3】基本数据类型-集合(

发布时间:2019-10-17 09:07:37编辑:auto阅读(525)

    集合,不可重复的列表,可变类型

    difference s1中存在,s2中不存在

    s1 = {'xmzncc','fcc'}
    s2 = {'alex','wusir'}
    v = s1.difference(s2)
    print(v)

    s2中存在,s1中不存在

    s1 = {'xmzncc','fcc','test'}
    s2 = {'alex','wusir','xmzncc'}
    v = s2.difference(s1)
    print(v)

    difference_update s1中存在,s2中不存在,然后对s1清空,然后在重新赋值

    s1 = {'xmzncc','fcc','test'}
    s2 = {'alex','wusir','xmzncc'}
    s1.difference_update(s2)
    print(s1)

    symmetric_difference s1与s2bu不同处

    s1 = {'xmzncc','fcc','test'}
    s2 = {'alex','wusir','xmzncc'}
    v = s1.symmetric_difference(s2)
    print(v)

    intersection s1与s2交集处

    s1 = {'xmzncc','fcc','test'}
    s2 = {'alex','wusir','xmzncc'}
    v = s1.intersection(s2)
    print(v)

    union 并集

    s1 = {'xmzncc','fcc','test'}
    s2 = {'alex','wusir','xmzncc'}
    v = s1.union(s2)
    print(v)

    discard 移除

    s1 = {'xmzncc','fcc','test'}
    s1.discard('xmzncc')
    print(s1)

    update 更新

    s1 = {"alex",'eric','tony','李泉','李泉11'}
    s1.update({'alex','123123','fff'})
    print(s1)

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