[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fW7CRqdJJ69VNayMbXYMJ_2kR5MjAphgTL9vAx55XSIA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-11-02 19:15:32",227807890,[8,9,10,11],"' PYTHON'","'PYT'","= PYTHON print( {0:3} .format(a))A. 'PYTH'","'PYTHON'",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},13,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_47201408","第2章作业 2.1 字符串","下面结果正确的是",[21,32,41,50,59,68,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],227807885,[25,26,27,28],"字符串可以保存在变量中,也可以单独存在","可以使用datatype()测试字符串的类型","字符串是一个字符串列,字符串中的编号叫"索引"","输出带有引号的字符串,可以使用转义字符","关于Python字符串,以下选项中描述错误的是()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],227807886,[36,37,38,39],"print(str[1].upper()+str[-1:])","print(str[0].upper()+str[1:])","print(str[0].upper()+str[1:-1])","print(str[1].upper()+str[2:])","设str = 'python',能把字符串的第一个字母大写,其余字母仍是小写,正确的选项是",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],227807887,[45,46,47,48],"星期一","星期三","星期二","星期四","下面代码的输出结果是world1 = "星期一星期二星期三星期四星期五星期六星期日"n = 3print(world1=[n*2: n*3])",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],227807888,[54,55,56,57],"None",""Python", 'love', 'I'","","Python love I","字符串 s = "I love Python",如下程序的输出结果是:s = "I love Python"is = s.split()is.reverse()print(is)",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],227807889,[63,64,65,66],"***** *QQ\u002FNechat===","*QQ \u002FNechat===","QQ===Nechat","QQ\u002FNechat===","如下程序的输出结果是:s1 = "QQ"s2 = "Nechat"print("{0}\u002F{1}===".format(s1, s2))",{"answer":69,"createTime":5,"id":6,"options":70,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],227807891,[75,76,77,78],"想把一个字符串str全部的字符串写入用str.upper()","设x = 'aa',则执行x$的结果是'aaaaaa'","想获取字符串str的长度,用字符串处理函数str.len()","str.replace(x,y)方法把字符串str中全部的x子串都替换成y","如下关于字符串类型的描述的描述,错误的是",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],227807892,[84,85,86,87],"the sky is blue","sky is blue the","blue is sky the","blue the sky is","s = "the sky is blue",表达式 print(s[-4:], s[-4:]) 的结果是",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],227807893,[93,94,95,96],"print(TempStr[-5:])","print(TempStr[-5:0])","print(TempStr[-5: -1])","print(TempStr[-4: -1])print(TempStr[-4: -1])","给出以下代码:TempStr = "Hello World"如下选项中输出出 "World" 子串的是",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],227807894,[102,103,104,105],"1","True","0","False","str = "Python 语言程序设计",表达式 str.lanumeric() 的结果是"]