[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRaWBZs3FdFN3iM8mZNme5d8KDeQs6FdvolMlhtyzVjc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-06-06 15:39:28",195386028,[8,9,10,11],"st.insert(s)","st.add(s)","st.append(s)","s.append(st)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},20,"44c3b509c563ea809405a7c6dc6002c2","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd318fe1b022a054e4ad01f419609f28e.jpg","Python程序设计","work_42007773","第四章 字符串","输入学生姓名,增加到一个列表st中,直到输入的姓名为空为止,最后输出st.s=[]while True: s=input() if s!="": __________ else: breakprint(st)",[21,32,41,44,54,63,72,81,90,99],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],195386019,[25,26,27,28],"i=len(s)","i=len(s)-1","i=len(s)+1","都不对","输入一个字符串s,反向输出它,例如输入"abc",输出"bca"s=input()__________while i>=0: print(s[i],end="")print()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],195386024,[36,37,38,39],"c.isDigit()","c.Digit()","c.IsDigit()","c.isdigit()","题目:输入一行字符,分别统计出其中英文字母、空格、数字和其它字符的个数.'''需求:输入一行字符,分别统计出其中英文字母、空格,数字和其他字符的个数.思路:利用while语句,条件为输入的字符'''s = input('input a string:')letters = 0space = 0digit = 0others = 0for c in s: if c.isalpha(): letters += 1 elif c.isspace(): space += 1 elif _________: digit += 1 else: others += 1print('char = %d, space = %d,digit = %d,others = %d' % (letters,space,digit,others))",{"answer":42,"createTime":5,"id":6,"options":43,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":45,"createTime":46,"id":47,"options":48,"question":53,"source":30,"type":31},[],"2025-06-06 15:39:29",195386035,[49,50,51,52],"\\","\u002F","#","%","当需要在字符串中使用特殊字符时,Python使用( )作为转义字符的起始符号",{"answer":55,"createTime":46,"id":56,"options":57,"question":62,"source":30,"type":31},[],195386039,[58,59,60,61],"'ab'","'''perface'''",""52wo"","abc","下列数据中,不属于字符串的是( )",{"answer":64,"createTime":46,"id":65,"options":66,"question":71,"source":30,"type":31},[],195386046,[67,68,69,70],"%c","%f","%d","%s","使用( )符号对浮点类型的数据进行格式化",{"answer":73,"createTime":46,"id":74,"options":75,"question":80,"source":30,"type":31},[],195386050,[76,77,78,79],"1","2","3","4","字符串'Hi,Andy'中,字符'A'对应的下标位置为( )",{"answer":82,"createTime":46,"id":83,"options":84,"question":89,"source":30,"type":31},[],195386055,[85,86,87,88],"length()","index()","count()","find()","下列方法中,能够返回某个子串在字符串中出现次数的是( )",{"answer":91,"createTime":46,"id":92,"options":93,"question":98,"source":30,"type":31},[],195386058,[94,95,96,97],"capitalize","title","upper","ljust","下列方法中,能够让所有单词的首字母变成大写的方法是( )",{"answer":100,"createTime":46,"id":101,"options":102,"question":107,"source":30,"type":31},[],195386061,[103,104,105,106],"删除字符串头尾指定的字符","删除字符串末尾指定的字符","删除字符串头部指定的字符","通过指定分隔符对字符串切片","字符串的strip方法的作用是( )"]