原理:
本人把题库用xml文件的方式存储,实际上就是xml的读取和写入的实现
示例题库:
<?xml version="1.0" encoding="utf-8"?> <root> <chapter id="1" name="网球"> <segment id="1"> <question>网球拍</question> <answer>tennis racket</answer> </segment> <segment id="2"> <question>共享单车</question> <answer>shared bike</answer> </segment> </chapter> <chapter id="2" name="历史文化"> <segment id="1"> <question>讲究/强调</question> <answer>attach great significance to</answer> </segment> <segment id="2"> <question>以……为基础</question> <answer>be set in</answer> </segment> </chapter> </root>
首先导库:
from xml.dom.minidom import parse import numpy
由于可能存在多个题库,比如数学、英语题库,故让用户输入题库名选择题库(即xml文件):
print('choose xml file:') xmlName = input('type in:')
DomTree = parse(f'{xmlName}.xml') root = DomTree.documentElement
接下来让用户选择做题还是往题库中写题:
print('for examination, type in 0\nfor creation, type in 1') judge = input('type in:')
一个题库中可能有多个章节,接下来展示章节名,让用户选择章节(本人把章节名放在<chapter>标签的name属性中,见文章开头):
print('chapter:') chapterList = root.getElementsByTagName('chapter') for i in range(chapterList.length): print(chapterList[i].getAttribute('id') + '、' + chapterList[i].getAttribute('name')) chapterNumStr = input('choose chapter:') chapterNum = int(chapterNumStr)
获取对应章节的问题和答案(均放在<segment>标签下):
chapter = root.getElementsByTagName('chapter')[chapterNum - 1] segment = chapter.getElementsByTagName('segment')
如若用户选择做题,询问用户按照顺序做题还是打乱顺序(numpy.random.permutation()方法)做题,并展示题目,用户输入答案后按下回车会展示参考答案并展示下一个题目,本人没有判断用户输入的答案是否正确,各位可以试着添加:
if judge == '0': print('out of order, type in 0\nin order, type in 1') ifRandom = input('type in:') if ifRandom == '0': for i in numpy.random.permutation(range(segment.length)): print('question:\n' + segment[i].getElementsByTagName('question')[0].childNodes[0].data) print("answer:") pause = input('yours:') print("reference:" + segment[i].getElementsByTagName('answer')[0].childNodes[0].data + '\n') elif ifRandom == '1': for i in range(segment.length): print('question:\n' + segment[i].getElementsByTagName('question')[0].childNodes[0].data) print("answer:") pause = input('yours:') print("reference:" + segment[i].getElementsByTagName('answer')[0].childNodes[0].data + '\n')
如若用户选择往题库中写题,我们定义一个函数,让用户依次输入问题、答案,并循环往复,用户可以在输入问题时输入"break"来跳出循环,最后把问题节点(<question>)和答案节点(<answer>)悬挂到新生成的<segment>节点下,写入xml就可以了:
segLength = segment.length elif judge == '1': print('type in "break" in question to jump out of the loop') def write_question(): global segLength segLength += 1 q = input('type in question:') if q == 'break': print('*******************') print('Program terminated.') print('*******************') else: a = input('type in answer:') creationS = DomTree.createElement('segment') creationS.setAttribute('id', str(segLength)) creationQ = DomTree.createElement('question') textQ = DomTree.createTextNode(q) creationQ.appendChild(textQ) creationA = DomTree.createElement('answer') textA = DomTree.createTextNode(a) creationA.appendChild(textA) creationS.appendChild(creationQ) creationS.appendChild(creationA) chapter.appendChild(creationS) with open(f'{xmlName}.xml', 'w', encoding='utf-8') as f: DomTree.writexml(f, addindent='', encoding='utf-8') write_question() write_question()
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