optimize choices in multiple if ---: statements

[Pedroski55]

My multiple-choice marking program gives me a csv file, which I read in python and then enter in an Excel sheet.

My code for choosing which class looks clumsy, but works. I feel there must be a more elegant way to do this. Could you give me any suggestions, please?

classNum = input()

while classNum not in classses:
	print('Please enter 17BE1, 17BE2, 17BE3 or 17BE4.')
	classNum = input()
pathsToExcel = ['/home/pedro/winter2018/17BE/17BEC1/', '/home/pedro/winter2018/17BE/17BEC2/', '/home/pedro/winter2018/17BE/17BEC3/', '/home/pedro/winter2018/17BE/17BEC4/']
resultFiles = ['17BE1W17results.xlsx', '17BE2W17results.xlsx', '17BE3W17results.xlsx', '17BE4W17results.xlsx']
if classNum == '17BE1':
        pathXL = pathsToExcel[0]
if classNum == '17BE2':
        pathXL = pathsToExcel[1]
if classNum == '17BE3':
        pathXL = pathsToExcel[2]
if classNum == '17BE4':
        pathXL = pathsToExcel[3]

if classNum == '17BE1':
        resultFile = resultFiles[0]
if classNum == '17BE2':
        resultFile = resultFiles[1]
if classNum == '17BE3':
        resultFile = resultFiles[2]
if classNum == '17BE4':
        resultFile = resultFiles[3]