使用python将txt转换为excel

txt格式为 

892天平天国定都在？A开封B南京C北京（B）

# coding=utf-8
'''
main function：主要实现把txt中的每行数据写入到excel中
'''

#################
#第一次执行的代码
import xlwt #写入文件
import xlrd #打开excel文件
import os

txtFileName = 'questions.txt'
excelFileName = 'questions.xls'


if os.path.exists(excelFileName):
	os.remove(excelFileName)


fopen = open(txtFileName, 'r')

lines = fopen.readlines()

#新建一个excel文件
file = xlwt.Workbook(encoding='utf-8',style_compression=0)

#新建一个sheet
sheet = file.add_sheet('data')

############################
#写入写入a.txt，a.txt文件有20000行文件
i=0
j=0
for 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 + 1

file.save(excelFileName)