Alex Instructional Video-credit card billing

Quota 15000

Can withdraw, handling fee%5

Last day of the month (30 days per month), write to File

Record daily consumption flow (trading day, transaction summary, amount)

Provide repayment interface

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Main program  bill_main_models.py#coding:utf-8import sysimport datetimeimport timedef 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     Not in circulation         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&NBSp;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 withdraw2 pay  by card3 repayment4 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 Transfers Procedure  bill_mon_sum.py#coding:UTF-8import datetimeimport timeimport  Sysdef mon_sum (Bill_card):    s = 0    for i  in bill_card:         i = float (i)          s = s + i    return swhile True:     if datetime.date.today (). Strftime ('%d ')  ==  ':       '   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 () &NBSP;&NBSP;&NBSP;&NBSP;&NBsp;   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

Alex Instructional Video-credit card billing