# coding=utf-8'''''main function：主要實現(xiàn)把txt中的每行數(shù)據(jù)寫入到excel中'''##################第一次執(zhí)行的代碼import xlwt #寫入文件import xlrd #打開excel文件import ostxtFileName = 'questions.txt'excelFileName = 'questions.xls'if os.path.exists(excelFileName):  os.remove(excelFileName)fopen = open(txtFileName, 'r')lines = fopen.readlines()#新建一個excel文件file = xlwt.Workbook(encoding='utf-8',style_compression=0)#新建一個sheetsheet = file.add_sheet('data')#############################寫入寫入a.txt，a.txt文件有20000行文件i=0j=0for line in lines:  indexA = line.find('A')  questionStr = line[0:indexA]  questionStr.lstrip()  indexB = line.find('B')  answerA = line[indexA:indexB]  indexC = line.find('C')  indexE = line.find('（')  answerB = ''  if indexC>0:    answerB = line[indexB:indexC]  else:    answerB = line[indexB:indexE]  indexD = line.find('D')  answerC = ''  answerD = ''  if indexD>0:    answerC = line[indexC:indexD]    answerD = line[indexD:indexE]  else:    answerC = line[indexC:indexE]  answer = line[line.find('（'):line.find('）')]  cindex = 0  questionStrCopy = ''  for c in questionStr:    if cindex<3:      if c>='0' and c<='9':        questionStrCopy = questionStr[cindex+1:]    cindex = cindex + 1  answerA = answerA[1:]  answerB = answerB[1:]  answerC = answerC[1:]  answerD = answerD[1:]  answer = answer.strip('（')  print answer  print questionStrCopy, answerA, answerB, answerC, answerD, answer  questionStrCopy = questionStrCopy.lstrip()  if questionStrCopy=='' or answerA=='' or answer=='':    continue  sheet.write(i, 0 , questionStrCopy)  sheet.write(i, 1 , answerA)  sheet.write(i, 2 , answerB)  sheet.write(i, 3 , answerC)  sheet.write(i, 4 , answerD)  sheet.write(i, 5 , answer)  i = i + 1file.save(excelFileName)