Python验证企业工商注册码

#coding: utf-8def getchecknum(input): ##定义企业注册码校验码计算函数  n = 10  for num in range(len(input)):    n = (int(input[num]) + n)%10    if n == 0:      n = 10    n = n*2%11  if n == 0:    s = 1  elif n== 1:    s = 0  else:    s = 11-n  return str(s) code = raw_input(u'请输入该企业15位注册码:')while True:  try:    len(code) == 15    num = code[:14]    check_num = int(code[14])    if check_num == int(getchecknum(num)):      print u'恭喜你，注册码正确。'    else:      print u'请注意，该注册码错误！！！'     break  except:    print u"请输入正确的企业15位注册码"raw_input(u'按任意键退出')