import csv
validCodes = []
csvReader = csv.reader(file(u'D:\T201602.csv', 'r'))
for csvLine in csvReader:
csvLineStr = ','.join(csvLine)
csvLineValues = csvLineStr.split(',')
validCodes.append(csvLineValues[3])
import csv
validCodes = []
csvReader = csv.reader(file(u'D:\T201602.csv', 'r'))
for csvLine in csvReader:
csvLineStr = ','.join(csvLine)
csvLineValues = csvLineStr.split(',')
validCodes.append(csvLineValues[3])