Implementing credit card consumption mechanism through Python

Functional Requirements:
1. Quota 15000
2. It can be shown that the handling fee is 5%
3 The last day of the month is the bill, write a file
4. Record monthly daily consumption flow (no daily consumption)

5. Write the repayment for the current period

Python Source code:

 #!/usr/bin/env python# encoding=utf-8# author:sihaogongyuan# date:2015-4-13#  filename:atm-py# desc:atm-py################################################ #import  sysimport  Ossys.path.append ('/tmp/python/') import tabimport time############################################## # # #credit_line =int (15000) old_money=int (15000) #print  type (credit_line) #counter_fee =0.05fee_rate=0.05###### ########################################### #date =time.strftime ('%y-%m-%d %h:%m:%s ') ###################### ########################## #date1 =time.strftime ('%y-%m-%d-%h:%m:%s ') f=file ('%s.log '% (date1), ' W ') F.close () f=file ('%s.log '% (date1), ' a ') f.write (' Transaction date \ t ' transaction summary \ t amount \ t fee \ t credit limit \ n ') ###### #取现 ##################################### #def  qu_xian ():  global credit_line  global fee_rate  #date =os.system ("date   ' +%f:%t ')   #print  date date=time.strftime ('%y-%m-%d %h:%m:%s ')  quxian_money=int (Raw_input (' pleaseEnter cash amount: '). Strip ())   #print  quxian_money,type (Quxian_money)  while quxian_money== ":     continue   #print  quxian_money,type (Quxian_money)  if 0<quxian_ money<=credit_line:   #定义手续费counter_fee   counter_fee=quxian_money*fee_rate   credit_line=credit_line-quxian_money-counter_fee  print  ' \033[32m has been taken%d yuan, the handling fee is%d yuan, the credit limit is%d Yuan \033[0m ' % (quxian_money,counter_fee,credit_line)   f.write ('%s\t withdrawal \t%s\t%d\t%d\n '% (date,quxian_money,counter_ Fee,credit_line))   f.flush ()  else:  print  ' \033[31m Cash amount%d is not within the credit limit, withdrawal failed \033[0m '% ( Quxian_money) ###### #刷卡 ####################################### #def  shua_ka ():  global credit_line   #date =os.system ("date  ' +%f:%t '")  date=time.strftime ('%y-%m-%d %h:%m:%s ')  shuaka_ Money=int (raw_input (' Please enter consumption amount: '). Strip ())  if 0<shuaka_money<=credit_line:  credit_ Line=credit_line-shuaka_money  print  ' \033[32m has consumed%d yuan, credit limit is%d \033[0m '% (shuaka_money,credit_line)    #f. Write ( Os.system (' Date '), ' \ t ', ' swipe ', ' \ t ', shuaka_money,0)   f.write ('%s\t swipe \t%s\t0\t%d\n '% (Date,shuaka_money, Credit_line))   f.flush ()  else:  print  ' \033[31m consumption amount%d is not within the credit limit, consumption failed \033[0m '% ( Shuaka_money) ####### #存钱 ###################################### #def  cun_qian ():  global credit_ line  #date =os.system ("date  ' +%f:%t '")  date=time.strftime ('%y-%m-%d %h:%m:%s ')  cun_ Qian_money=int (raw_input (' Please enter your deposit amount: '). Strip ())  if cun_qian_money>0:  credit_line=credit_ line+cun_qian_money  print  ' \033[32m deposit%d successful, current credit limit is:%d '% (cun_qian_money,credit_line)    F.write ('%s\t save \t-%s\t0\t%d\n '% (date,cun_qian_money,credit_line))   f.flush ()  else:   print  ' \033[31m Access amount%d does not conform to specification, deposit failed \033[0m '% (Cun_qian_money) ########## #main ################################## # #print   ' \ t Welcome to ATM system ' WHile true:  #credit_line =int (15000)   #fee_rate =0.05 choice=raw_input (' Please enter what you want to do (withdraw, consume, save, withdraw) : '). Strip ()  if choice== ':     continue if choice== ' withdrawal '  or  choice== ' withdrawal ':   qu_xian ()   continue elif choice== ' credit card '  or choice== ' consumption ':   shua_ka ()   continue elif choice== ' save '  or choice== ' deposit ':   Cun_qian ()   continue elif choice== ' exit '  or choice== ' exit ':  break  else:  print  ' non-compliant operation, please re-select '   continue################################################ # # #f. Write (' \033[32m currently available credit limit:%s\n\033[0m '% (credit_line)) F.flush () f.write (' \033[32m current repayment amount is%d\n\033[0m '% (old_ Money-credit_line)) F.flush () F.close () f=file ('%s.log '% (date1), ' R ') Print f.read () ########################## #########################

Implementing credit card consumption mechanism through Python