摘要: # -*- coding: utf-8 -*- import math import re import csv import repr def ean_checksum(eancode): """returns the checksum of an ean string of length 13, returns -1 if the string has the wrong lengt... 阅读全文
posted @ 2016-05-24 23:29 屌丝IT男 阅读(2822) 评论(0) 推荐(0) 编辑