alex教学视频--信用卡账单

额度15000

可以提现，手续费%5

每月最后一天出账单（每月30天），写入文件

记录日常消费流水（交易日，交易摘要，金额）

提供还款接口

主程序 bill_main_models.py
#coding:UTF-8
import sys
import datetime
import time
def withdraw_mode(limit):
    f_file = ‘bill_detail.txt‘
    try:
        num = int(raw_input(‘Please input your withdraw number:‘))
    except:
        print ‘Please input a valid number‘
        #continue    不在循环中
        sys.exit()
    true_num = num + num * 0.05
    if true_num <= limit:
        print ‘OK,give you the money‘
        limit = limit - true_num
        print ‘now you have ‘,limit
        item = str(datetime.date.today()) + ‘ ‘ + ‘withdraw‘ + ‘ ‘ + str(true_num)
        f = file(f_file,‘a‘)
        f.write(item)
        f.write(‘\n‘)
        f.close()
        return limit
       
    else:
        print ‘you want too much money,now you have ‘,limit
       
def pay_by_card_mode(limit):
    f_file = ‘bill_detail.txt‘
    try:
        name = raw_input(‘Please input your product name:‘)
        num = int(raw_input(‘Please input your product money:‘))
    except:
        print ‘Please input a valid name or number‘
        sys.exit()
    if num <= limit:
        print ‘OK,you get it‘
        limit = limit - num
        print ‘now you have ‘,limit
        item = str(datetime.date.today()) + ‘ ‘ + ‘pay_by_card‘ + ‘ ‘ + str(num)
        f = file(f_file,‘a‘)
        f.write(item)
        f.write(‘\n‘)
        f.close()
        return limit
       
    else:
        print ‘you want too much money,now you have ‘,limit
       
def repayment_mode(limit):
    f_file = ‘bill_detail.txt‘
    try:
        num = int(raw_input(‘Please input your back money:‘))
    except:
        print ‘Please input a valid number‘
        sys.exit()
   
    print ‘OK,you back it‘
    limit = limit + num
    print ‘now you have ‘,limit
    item = str(datetime.date.today()) + ‘ ‘ + ‘repayment‘ + ‘ ‘ + str(num)
    f = file(f_file,‘a‘)
    f.write(item)
    f.write(‘\n‘)
    f.close()
    return limit
   
limit = 15000  #这应该写在文件里的
while True:
    print ‘‘‘
1 withdraw
2 pay by card
3 repayment
4 exit
‘‘‘
    try:
        choose = int(raw_input(‘Please input your number:‘))
    except:
        print ‘Please input a valid number‘
        continue
    if choose == 1:
        limit = withdraw_mode(limit)
    elif choose == 2:
        limit = pay_by_card_mode(limit)
    elif choose == 3:
        limit = repayment_mode(limit)
    elif choose == 4:
        sys.exit()
    else:
        print ‘Please input a valid number‘
        continue
月初出账程序 bill_mon_sum.py
#coding:UTF-8
import datetime
import time
import sys
def mon_sum(bill_card):
    s = 0
    for i in bill_card:
        i = float(i)
        s = s + i
    return s
while True:
    if datetime.date.today().strftime(‘%d‘) == ‘23‘:
        pay_by_card_mon = []
        withdraw_mon = []
        repayment_mon = []
        f_file = ‘bill_detail.txt‘
        f = file(f_file)
        for line in f.readlines():
            line = line.strip().split()
            if line[1] == ‘pay_by_card‘:
                pay_by_card_mon.append(line[2])
            elif line[1] == ‘withdraw‘:
                withdraw_mon.append(line[2])
            elif line[1] == ‘repayment‘:
                repayment_mon.append(line[2])
            else:
                print ‘this bill is no defiened‘
                pass
        f.close()
        pay_by_card_mon_sum = str(datetime.date.today()) + ‘ ‘ + ‘pay_by_card_mon‘ + ‘ ‘ + str(mon_sum(pay_by_card_mon))
        withdraw_mon_sum = str(datetime.date.today()) + ‘ ‘ + ‘withdraw_mon‘ + ‘ ‘ + str(mon_sum(withdraw_mon))
        repayment_mon_sum = str(datetime.date.today()) + ‘ ‘ + ‘repayment_mon‘ + ‘ ‘ + str(mon_sum(repayment_mon))
        f_file = ‘bill_mon.txt‘
        f = file(f_file,‘a‘)
        f.write(pay_by_card_mon_sum)
        f.write(‘\n‘)
        f.write(withdraw_mon_sum)
        f.write(‘\n‘)
        f.write(repayment_mon_sum)
        f.write(‘\n‘)
        f.close()
        print ‘1111111111‘
        time.sleep(60*60*24)
    else:
        print ‘222222‘
        time.sleep(60*60*24)
        continue