[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fFOof3AWJuuij8bZNeboj08zDODPDVJIYRAvI08UKYxc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":14,"related":15,"source":25,"type":49},[],"2026-05-07 01:27:09",359788302,[8,9],"正确","错误",{"courseId":11,"courseImg":12,"courseName":13},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","There are two indexes in Python string: positive index and negative index. Negative index, right to left, from 0 by default",[16,27,36,46,50],{"answer":17,"createTime":5,"id":18,"options":19,"question":24,"source":25,"type":26},[],359788299,[20,21,22,23],"'-VAT payable'","'VAT payable-'","'Pay VAT'","'VAT payable'","string str 1 = "tax payable-VAT payable-input tax", the output result of the execution statement str 1 [5:10] is ()","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],359788300,[31,32,33,34],"1","-1","0","2","The last element in a Python string of any length is subscripted as ()",{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":45},[],359788301,[40,41,42,43],"A single character can be regarded as a string of length 1","String negative index from right to left, from-1 by default","You can create strings with either single quotes or double quotes","Special characters such as a change-line return can be included in a three-quote string","The following correct statement about the string is ()",1,{"answer":47,"createTime":5,"id":6,"options":48,"question":14,"source":25,"type":49},[],[8,9],3,{"answer":51,"createTime":5,"id":52,"options":53,"question":54,"source":25,"type":49},[],359788303,[8,9],"The positive index in Python is from left to right, starting from 0 by default"]