withdraw_file_write(n,draw)

return m

def withdraw_file_write(user,withdraw):

shouxufei = cash * 0.05

tran_time=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))

spath = "record_tran.txt"

f = open(spath,'a')

f.write("%s|%s|withdraw|%d|%d \n" %(user,tran_time,withdraw,shouxufei))

f.close()

cashin.py

#!/usr/bin/python

import time

#cash in function

def cash_in(n,m):

print "Hello %s, your account have %d RMB now." %(n,m)

cash = int(raw_input("Please input how much money you want to save in :"))

m = m + cash

cashin_file_write(n,cash)

return m

def cashin_file_write(user,cashin):

tran_time=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))

spath = "record_tran.txt"

f = open(spath,'a')

f.write("%s|%s|cashin|%d|0 \n" %(user,tran_time,cashin))

f.close()

printlist.py

#!/usr/bin/python

#select current user's bill

def print_list(n):

print "Hello %s, Here is your bill:" %n

print "Account|Date|Goods|Price|Fee"

spath1 = "./record_tran.txt"

f1 = open(spath1,'r')

for line in f1.readlines():

if line.split('|')[0] == n:

print line

user_list

user1 123

user2 456

goods_list

1 Car 250000

2 Clothes 399

3 Shoes 199

4 Iphone5s 4999

5 Coffee 35

6 Foods 68

7 Bicycle 1688

example of record_tran.txt

user1|2014-07-08 16:59:27|Iphone5s|4999|0

user2|2014-07-08 16:59:31|withdraw|1000|50

user1|2014-07-08 16:59:56|withdraw|500|25

user2|2014-07-09 14:38:33|cashin|3456|0

user2|2014-07-09 14:39:10|Coffee|35|0