[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fhKP3DY0oXwtCn_4wcvDp8HOuh1IYjDpiFfb21Vw5PJQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-12 09:49:15",7187749,[8,9,10,11],"print(a)的结果是{'a', 'r', 'b', 'c', 'd'}","print(a)的结果是{'a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a'}",">>> a - b # 集合a中包含而集合b中不包含的元素的结果是{'r', 'd', 'b'}",">>> a | b# 集合a或b中包含的所有元素的结果是{'a', 'c', 'r', 'd', 'b', 'm', 'z', 'l'}",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},39,"2958ab01ed12f012de40b6c1a0dfa96a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffb4e0e6a5574c0a2bea5a3691ff957f7.jpg","金融量化分析-Python语言及其应用","1ae2fbc6835e4da8a6d1cfb6aa1823fd","第四章集合.xls","以下代码的结果不正确的是() a = set('abracadabra') b = set('alacazam')",[21,32,41,50,59,68,77,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],7187743,[25,26,27,28],"x = { 200, 'flg', 20.3}","x = ( 200, 'flg', 20.3)","x = [ 200, 'flg', 20.3 ]","x = {'flg' : 20.3}","如下表达式,正确定义了一个集合数据对象的是","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],7187744,[36,37,38,39],"集合(set)是一个无序的不重复元素序列","可以使用大括号 { } 创建集合","可以使用 set() 函数创建集合","创建一个空集合可以使用{ }","下面关于集合的说法错误的是",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],7187745,[45,46,47,48],"set = set() # 创建空集合必须用这种方式","set = {} # 使用这种方式创建的为空的集合","set = {1,2,3,4} # 可以用这种方式创建有初始值的集合","set = set(iterable) # iterable可以使用可迭代对象创建, 例如列表和元组","下列说法错误的是",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],7187746,[54,55,56,57],"使用操作符 | 执行并集操作,同样地,也可使用方法 issubset () 完成","使用 & 操作符执行交集操作,同样地,也可使用方法 intersection() 完成","使用操作符 - 执行差集操作,同样地,也可使用方法 difference() 完成","使用 ^ 操作符执行差集操作,同样地,也可使用方法difference() 完成","关于集合的运算,那个是错误的",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],7187747,[63,64,65,66],"结果为{'apple', 'orange', 'apple', 'pear', 'orange', 'banana'}","结果为{'orange', 'banana', 'pear', 'apple'}","结果为basket","结果会出错","以下代码的结果正确的是()basket = {'apple', 'orange', 'apple', 'pear', 'orange', 'banana'}print(basket)",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],7187748,[72,73,74,75],"'orange' in basket # 表示快速判断元素是否在集合内,结果为true","'crabgrass' in basket # 表示快速判断元素是否在集合内,结果为False","'milk' not in basket # 表示快速判断元素是否在集合内,结果为False","'pear' not in basket # 表示快速判断元素是否在集合内,结果为False","以下代码的结果正确的是()basket = {'apple', 'orange', 'apple', 'pear', 'orange', 'banana'}",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],7187750,[84,85,86,87],"type( )","index( )","len( )","count( )","Python内置函数_________可以返回列表、元组、字典、集合、字符串以及range对象中元素个数",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],7187751,[93,94,95,96],"s.discard(x)会删除集合中的所有元素","x在集合s中不存在时,使用s.discard(x)不触发异常","x在集合s中不存在时,使用s.remove(x)不触发异常","s.remove(x)会删除集合中的所有元素","s.remove(x)和s.discard(x)都可以从集合s 中删除元素x,二者的区别是",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],7187752,[102,103,104,105],"5","3","4","2","阅读下面程序: set_01 = {'a', 'c', 'b', 'a'} set_01.add('d') print(len(set_01)) 运行程序,输出结果是"]