python实现日常记账本小程序

python实现收支的自动计算，能够查询每笔账款的消费详情，具体内容如下

1、函数需要两个文件：一个类似钱包功能，存放钱；另一个用于记录每笔花销的用途

#!/usr/bin/env python
import cPickle as p

with open('wallet.data','w') as f:
 p.dump(10000,f)

with open('record.txt','w') as f:
 pass

2、功能实现

#!!/usr/bin/env python
#coding:utf8

import cPickle as p
import time

date = time.strftime('％Y％m％d')

def save_money():
 sav_count=int(raw_input('save money: '))
 sav_comment = raw_input('doing what: ')

with open('wallet.data') as f:
   balance = p.load(f)

new_bal = balance + sav_count
 with open('wallet.data','w') as f:
   p.dump(new_bal,f)

content = '％-12s％-8s％-8s％-10s％-25s\n'％(date,'N/A',sav_count,new_bal,sav_comment)
 with open('record.txt','a')as f:
   f.write(content)

def spend_money():
 spe_count=int(raw_input('spend money: '))
 spe_comment = raw_input('doing what: ')

with open('wallet.data') as f:
   balance = p.load(f)

new_bal = balance - spe_count
 with open('wallet.data','w') as f:
   p.dump(new_bal,f)

with open('record.txt','a')as f:
   content = '％-12s％-8s％-8s％-10s％-25s\n'％(date,spe_count,'N/A',new_bal,spe_comment)
   f.write(content)

def query_info():
 line = '='*63
 content = '％s\n％-12s％-8s％-8s％-10s％-25s'％(line,'Date','Cost','Save','Balance','Comment')

with open('wallet.data') as f:
   new_bal = p.load(f)

print 'new balance: ',new_bal

print content
 with open('record.txt') as f:
   for line in f:
      print line

def show_menu():
 prompt = '''''
 '0':'spend_money'
 '1':'save_money'
 '2':'query_info'
 '3':'quit'
'''
 while True:
   CMDs={'0':spend_money,'1':save_money,'2':query_info}
   choice = raw_input('which do you want to do ?％s: '％prompt)
   if choice not in '012':
     break
   CMDs[choice]()

if __name__=='__main__':
 show_menu()

3、程序还有改进处，例如将两个文件以参数的形式传入，会简化代码。

来源：http://blog.csdn.net/shougaogao2011/article/details/50498712