# -*- coding: utf-8 -*-
__author__ = 'WyAtu'
import time
import os
# 用于计算整个数据串的前4位
def cal_balance(bal):
 str_balance = '%04X' % (bal * 100)
 standard_balcnde = str_balance[2:] + str_balance[0:2]
 # print "The money_data is:", standard_balcnde
 return standard_balcnde
# 用于计算输入金额的对应数据串的校验位及之后的整个数据串
def cal_check_digit():
 clear = os.system("cls")
 while True:
 try:
 money_number = input('Please input the money:\n')
 top_four_number = cal_balance(money_number)
 data_string = raw_input('Please input the data_string:\n')
 check_string = top_four_number + data_string[4:30]
 container = []
 for n in range(2, len(check_string) + 1, 2):
 for i in range(0, len(check_string)):
 if n - 2 <= i < n and i % 2 != 0:
 container.append(check_string[i - 1] + check_string[i])
 sum = 0
 for i in range(len(container)):
 add = int(container[i], 16)
 sum = sum + add
 str_sum = str(hex(sum))
 result_string = check_string + str_sum[-2:]
 # print "the result data string is:\n"
 output_box(result_string)
 help()
 except Exception:
 # print e2
 pass
 else:
 break


# 用于输出最后的结果数据串
def output_box(sen):
 screen_width = 60
 text_width = len(sen)
 box_width = text_width + 6
 left_margin = (screen_width - box_width) // 2
 # print ' ' * left_margin + '+' + '-' * box_width + '+'
 # print ' ' * left_margin + '|' + ' ' * box_width + '|'
 # print ' ' * left_margin + '|' + ' ' * 3 + sen + ' ' * 3 + '|'
 # print ' ' * left_margin + '|' + ' ' * box_width + '|'
 # print ' ' * left_margin + '+' + '-' * box_width + '+', '\n'


# 用于退出
def quit(option):
 if option == 'Q' or option == 'q':
 clear = os.system("cls")
 for num in range(5, 0, -1):
 print("Thanks for your trust and use!\n"
 "Written by WyAtu~ Goodbye!")
 if num != 1:
 sec = "seconds..."
 else:
 sec = "second..."
 # print "Wait,the program will exit after", num, sec
 time.sleep(1)
 clear = os.system("cls")
 exit()
 else:
 cal_check_digit()


# 用于获取帮助
def help():
 opt = raw_input("Now you have the following options:\n"
 "1) Press 'H' to obtain help and more information.\n"
 "2) Press ANY KEY(except 'H' and 'Q') to enter program.\n"
 "3) Press 'Q' to exit.\n")
 if opt == 'H' or opt == 'h':
 clear = os.system("cls")
 # print "HELP INFORMATION:\n" \
 # "<1> Please input money After you press ANY KEY(except 'Q').\n" \
 # "<2> How to exit the program?\n" \
 # " Press 'Q'.\n"
 opt = raw_input("OK,now you have the following options:\n"
 "1) Press ANY KEY(except 'Q') to enter the program.\n"
 "2) Press 'Q' to exit.\n")
 quit(opt)
 cal_check_digit()
 else:
 quit(opt)
while True:
 try:
 print('Welcome to use this program!')
 help()
 cal_check_digit()
 except Exception:
 # print e1
 break
 else:
 break