[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fCRA-ATt_1DnvDTbNQm-RNbARKwAx1foAyG_e_MwXe8w":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-12-12 15:09:33",113303198,[8,9,10,11],"字符串可以保存在变量中,也可以单独存在","字符串是一个字符序列,字符串中的编号叫"索引"","可以使用datatype()测试字符串的类型","输出带有引号的字符串,可以使用转义字符\\",{"courseId":13,"courseImg":14,"courseName":15},"b8475c35b2f2ec9b021f52f25a1eadfc","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c390e4f52b95fda381f1986a38c02e3.jpg","Python程序设计","关于Python字符串,以下选项中描述错误的是( )",[18,29,38,47,56,65,68,77,86,95],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],113303193,[22,23,24,25],"Python语言中,字符串是用一对双引号""或者一对单引号 '' 括起来的零个或者多个字符","字符串包括两种序号体系:正向递增和反向递减","字符串是字符的序列,可以按照单个字符或者字符片段进行索引","Python字符串提供区间访问方式,采用[N:M]格式,表示字符串中从N到M的索引子字符串(包含N和M)","以下选项中,关于Python字符串的描述错误的是( )","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],113303194,[33,34,35,36],"print(TempStr[–5:0])","print(TempStr[–5:])","print(TempStr[–5: –1])","print(TempStr[–4: –1])","给出如下代码TempStr ="Hello World" 可以输出"World"子串的是( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],113303195,[42,43,44,45],"eval函数的定义为:eval(source, globals=None, locals=None, \u002F)","执行>>> eval("Hello")和执行>>> eval(" 'Hello' ")得到相同的结果","eval函数的作用是将输入的字符串转为Python语句,并执行该语句","如果用户希望输入一个数字,并用程序对这个数字进行计算,可以采用eval(input( ))组合","关于eval函数,以下选项中描述错误的是( )",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],113303196,[51,52,53,54],"{.2}","{:.2f}","{:.2}","{.2f}","利用print()格式化输出,能够控制浮点数的小数点后两位输出的是( )",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],113303197,[60,61,62,63],"s[3]","s[:-3]","s[-3]","s[0:-3]","以下选项中可访问字符串s从右侧向左第三个字符的是( )",{"answer":66,"createTime":5,"id":6,"options":67,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":27,"type":28},[],113303199,[72,73,74,75],"'0eff","'0off","'0xff'","'0bff'","下面代码的输出结果是>>> hex(255)",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":27,"type":28},[],113303200,[81,82,83,84],"'0d–377'","'0o–377'","'–0d377'","'–0o377'","面代码的输出结果是( )>>> oct(–255)",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":27,"type":28},[],113303201,[90,91,92,93],"'0o1010'","'0d1010'","'0b1010'","'0x1010'","下面代码的输出结果是( )>>> bin(10)",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":27,"type":28},[],113303202,[99,100,101,102],"gb2312","gbk","big5","ascii",")不是用于处理中文的字符编码"]