python实现日常记账本小程序

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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 =

  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()

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