[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fa2fF9KdEjuyORT8kmCInQzHthvpmccFv-AqKagIi4YI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2026-05-07 10:55:54",360552913,[8,9,10,11],"[1,2,3]","(1,2,3)","{1,2,3}","{}",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","在下列语句中,定义了一个Python字典的是( )",[18,29,38,47,55,58,67,76,85,94],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],360552904,[22,23,24,25],"7","19","12","15","下列语句执行后的结果是().fruits={'apple': 3,'banana': 4,'pear':5}fruits [' banana']=7print(sum(fruits. values()))","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],360552906,[33,34,35,36],"值可以是任意类型的Python对象","属于Python中的不可变类型","字典元素用大括号{ }包裹","由键值(key-value)对构成","下列关于字典的定义,()是错误",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],360552909,[42,43,44,45],"字符串","字典","元组","列表","Python的序列类型不包括()",{"answer":48,"createTime":5,"id":49,"options":50,"question":54,"source":27,"type":28},[],360552911,[51,52,53,24],"6","3","9","对于字典dic={'abc':123,'def':456,'ghi':789},len(dic)的结果是()",{"answer":56,"createTime":5,"id":6,"options":57,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":59,"createTime":5,"id":60,"options":61,"question":66,"source":27,"type":28},[],360552915,[62,63,64,65],"dict={}","dict={4:6}","dict={(4,5,6): 'dictionary'}","dict={[4,5,6]: 'dictionary'}","在下列语句中,不能创建一个字典的语句是()",{"answer":68,"createTime":5,"id":69,"options":70,"question":75,"source":27,"type":28},[],360552918,[71,72,73,74],"D[3]","D[4]","D[D]","D['D']","对于字典D={'A':10,'B':20,'C':30,'D':40},对字典元素'D':40的访问形式是()",{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":27,"type":28},[],360552920,[80,81,82,83],"dict1={}","dict2={3:5}","dict3=dict([1,2],[3,4])","dict4=dict(([1,2],[3,4]))","以下不能创建字典的语句是()",{"answer":86,"createTime":5,"id":87,"options":88,"question":93,"source":27,"type":28},[],360552922,[89,90,91,92],"10","100","40","200","对于字典D={'A':10,'B':20,'C':30,'D':40},sum(list(D.values()))的值是()",{"answer":95,"createTime":5,"id":96,"options":97,"question":102,"source":27,"type":28},[],360552924,[98,99,100,101],"1","2","食品","饮料","下列语句执行后的结果是().d1={1:'food'}d2={1:"食品",2:"饮料"}d1. update(d2)print(d1[1])"]