day06 记账程序01

最新推荐文章于 2024-06-12 10:55:13 发布

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最新推荐文章于 2024-06-12 10:55:13 发布

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本文链接：https://blog.youkuaiyun.com/weixin_40447206/article/details/81141722

本文介绍了一个简易的记账程序实现方法，通过Python语言完成开支与收入的记录、查询等功能。程序采用pickle模块来实现数据的持久化存储，并利用时间模块获取当前日期，确保每条记录的时间准确性。

记账程序
1. 假设在记账时,有一万元钱
2. 无论是开销还是收入都要进行记账
3. 记账内容包括时间、金额和说明等
4. 记账数据要求永久存储

import pickle
import os
import time

def cost(wallet, record):
    amount = int(input('amount: '))
    comment = input('comment: ')
    date = time.strftime('%Y-%m-%d')
    with open(wallet, 'rb') as fobj:
        balance = pickle.load(fobj) - amount
    with open(wallet, 'wb') as fobj:
        pickle.dump(balance, fobj)
    with open(record, 'a') as fobj:
        fobj.write(
            '%-12s%-8s%-8s%-10s%-20s\n' % (date, amount, '', balance, comment)
        )

def save(wallet, record):
    amount = int(input('amount: '))
    comment = input('comment: ')
    date = time.strftime('%Y-%m-%d')
    with open(wallet, 'rb') as fobj:
        balance = pickle.load(fobj) + amount
    with open(wallet, 'wb') as fobj:
        pickle.dump(balance, fobj)
    with open(record, 'a') as fobj:
        fobj.write(
            '%-12s%-8s%-8s%-10s%-20s\n' % (date, '', amount, balance, comment)
        )

def query(wallet, record):
    print('%-12s%-8s%-8s%-10s%-20s' % ('date', 'cost', 'save', 'balace', 'comment'))
    with open(record) as fobj:
        for line in fobj:
            print(line, end='')
    with open(wallet, 'rb') as fobj:
        balance = pickle.load(fobj)
    print("Latest Balance: %d" % balance)

def show_menu():
    cmds = {'0': cost, '1': save, '2': query}
    prompt = """(0) cost
(1) save
(2) query
(3) exit
Please input your choice(0/1/2/3): """
    wallet = 'wallet.data'
    record = 'record.txt'
    if not os.path.exists(wallet):
        with open(wallet, 'wb') as fobj:
            pickle.dump(10000, fobj)

    while True:
        try:
            choice = input(prompt).strip()[0]
        except IndexError:
            continue
        except (KeyboardInterrupt, EOFError):
            print()
            choice = '3'

        if choice not in '0123':
            print('Invalid input. Try again.')
            continue

        if choice == '3':
            break
        cmds[choice](wallet, record)

if __name__ == '__main__':
show_menu()