ATM+购物车

时间：2023-03-09 08:12:47
ATM+购物车

本次代码的实现用到了模块间的互相调用，这对于初学者而言有些难度，不过这也是我们必须要掌握的，在以后的大程序中，多个模块会让我们的代码看起来简洁明了，易排错 （本次代码只是简单的实现的基本的功能，其代码还不是很完美，望各位大神多多指导）

ATM+购物车

对于一个程序而言，读者想要大概了解你的代码都实现了什么功能，READEME是最直接的。这也是我们呈现给读者的窗口。就本次程序而言

├── README

├── ATM #ATM主程目录

│   ├── __init__.py

│   ├── bin #ATM 执行文件 目录

│   │   ├── __init__.py

│   │   ├── atm.py  #ATM 执行程序

│   │  

│   ├── conf #配置文件

│   │   ├── __init__.py

│   │   └── settings.py

│   ├── core #主要程序逻辑都 在这个目录 里

│   │   ├── __init__.py

│   │   ├── accounts.py  #用于从文件里加载和存储账户数据

│   │   ├── auth.py      #用户认证模块及主要功能函数

│   │   ├── db_handler.py   #数据库连接引擎

│   │   ├── logger.py       #日志记录模块

│   │   ├── main.py         #主逻辑交互程序

│   │  

│   ├── db  #用户数据存储的地方

│   │   ├── __init__.py

│   │   ├── account_sample.py #生成一个初始的账户数据 ,把这个数据 存成一个 以这个账户id为文件名的文件,放在accounts目录 就行了,程序自己去会这里找

│   │   └── accounts #存各个用户的账户数据 ,一个用户一个文件

│   │       └── 1234.json #一个用户账户示例文件

│   └── log #日志目录

│       ├── __init__.py

│       ├── access.log #用户访问和操作的相关日志

│       └── login_in.log    #登陆日志

└── shopping_mall #电子商城程序,需单独实现,主要实现购物的功能。

    └── __init__.py

下面是各个模块的源码及主要实现的功能

import os

import sys

base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

sys.path.append(base_dir)

from core import main

if __name__ == "__main__":

    main.run()

atm.py

import os

import sys

import logging

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

DATABASE = {

    'engine': 'file_storage',

    'name': 'accounts',

    'path': '%s\db' % BASE_DIR

}

LOG_LIVEL = logging.DEBUG

LOG_TYPES = {

    'access': 'access.log',

    'login_in': 'login_in.log'

}

TRANSACTION_TYPE = {

    'repay':{'action':'plus', 'interest':0},

    'withdraw':{'action':'minus', 'interest':0.05},

    'transfer':{'action':'minus', 'interest':0.05},

    'consume':{'action':'minus', 'interest':0},

}

settings.py

from core import db_handler

from conf import settings

import json

def account_load(user_id):

    db_path = db_handler.db_handler(settings.DATABASE)

    new_user_file = "%s\%s.json" % (db_path, user_id)

    with open(new_user_file, "r") as f:

        user_data = json.load(f)

        return user_data

def account_dump(new_accounts):

    db_path = db_handler.db_handler(settings.DATABASE)

    new_user_file = "%s\%s.json" % (db_path, new_accounts['id'])

    with open(new_user_file, "w") as f:

        json.dump(new_accounts, f)

    return True

account.py

import json

import re

from core import db_handler

from conf import settings

from core import account

from core import logger

import logging

tran_logger = logger.logger('access')

def make_transaction(tran_logger,user_data,tran_type,amount_money):

    amount_money = float(amount_money)

    if tran_type in settings.TRANSACTION_TYPE:

        intertest = amount_money * settings.TRANSACTION_TYPE[tran_type]['interest'] # 算的利息

        old_money = user_data['balance']

        if settings.TRANSACTION_TYPE[tran_type]['action'] == "plus":

            new_balance = old_money + amount_money + intertest

        elif settings.TRANSACTION_TYPE[tran_type]['action'] == "minus":

            new_balance = old_money - amount_money - intertest

            if new_balance < 0:

                print("余额不足")

                return

        user_data['balance'] = new_balance

        new_balance = user_data

        account.account_dump(new_balance)

        tran_logger.debug("this trans is success and you remain %s money" % (new_balance['balance']))

        return new_balance

    else:

        print("输入有误")

def withdraw(user_data):

    user_data = account.account_load(user_data['id'])

    print("信用卡现有金额 %s" % (user_data['balance']))

    flag = False

    while not flag:

        withdraw_money = input("输入你想要取的金额>>>>").strip()

        if len(withdraw_money) > 0 and withdraw_money.isdigit():

            new_user_data = make_transaction(tran_logger, user_data, 'withdraw', withdraw_money)

            if new_user_data:

                print("还剩余额%s" % (new_user_data['balance']))

                # tran_logger.debug("this trans is success and you tack %s money" %(withdraw_money) )

            flag = True

def repay(user_data):

    user_data = account.account_load(user_data['id'])

    print("信用卡现有金额 %s" % (user_data['balance']))

    flag = False

    while not flag:

        repay_money = input("输入你要存取的金额>>>>").strip()

        if len(repay_money) > 0 and repay_money.isdigit():

            new_user_data = make_transaction(tran_logger, user_data, 'repay', repay_money)

            if new_user_data:

                print("信用卡金额%s" % (new_user_data['balance']))

                # tran_logger.debug("this trans is success and you save %s money" % (repay_money))

            flag = True

def transfer(user_data):

    user_data = account.account_load(user_data['id'])

    print("信用卡金额%s" % (user_data['balance']))

    flag = False

    while not flag:

        tran_id = input("请输入对方信用卡ID>>>>>").strip()

        tran_money = input("请输入要转的金额>>>>").strip()

        if tran_id.isdigit():

            if len(tran_money) > 0 and tran_money.isdigit():

                new_user_data = make_transaction(tran_logger,user_data, 'transfer', tran_money)

                if new_user_data:

                    print("信用卡剩余金额%s" % (new_user_data['balance']))

                    # tran_logger.debug("this trans is success and you transfer %s money to %s" % (tran_money,tran_id))

                flag = True

def spend():

    db_path = settings.BASE_DIR

    new_user_file = "%s\log\\access.log" % (db_path)

    # with open(new_user_file, "r") as f:

    #     user_data = json.load(f)

    #     print(user_data)

    f = open(new_user_file,'r')

    a = f.read()

    # i = re.compile('20\d{2}-\d+-\d+')

    # data = i.findall(a)

    print(a)

    f.close()

def xiaofei(shop_price,counts):

    flag = False

    while not flag:

        xiaofei_money = shop_price

        db_path = db_handler.db_handler(settings.DATABASE)

        new_user_file = "%s/%s.json" % (db_path, counts)

        # print(new_user_file,"+++++++++++++")

        with open(new_user_file,"r") as f:

            user_data = json.load(f)

            if user_data['balance'] < shop_price:

                print("余额不足")

            else:

                new_balance = float(user_data['balance']) - float(xiaofei_money)

                user_data['balance'] = new_balance

                new_user_data = user_data

                with open(new_user_file, "w") as f:

                    json.dump(new_user_data, f)

                    print("信用卡中剩余金额", new_user_data['balance'])

                    tran_logger.debug("this trans is success and you spend %s money" % (xiaofei_money))

        flag = True

auth.py

def db_path(user_date):

    user_path = "%s\%s" % (user_date['path'], user_date['name'])#user_data 相当于 settings.DATABASE

    return user_path

def db_handler(user_data):

    if user_data['engine'] == "file_storage":

        return db_path(user_data)

db_handle.py

import logging

from conf import settings

def logger(log_type):

    logger = logging.getLogger(log_type)

    logger.setLevel(settings.LOG_LIVEL)#设置等级

    ch = logging.StreamHandler() #屏幕对象

    ch.setLevel(settings.LOG_LIVEL)

    log_file = "%s\log\%s" % (settings.BASE_DIR, settings.LOG_TYPES[log_type])

    fh = logging.FileHandler(log_file)#文件对象

    fh.setLevel(settings.LOG_LIVEL)

    #日志输出格式

    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')

    ch.setFormatter(formatter)

    fh.setFormatter(formatter)

    logger.addHandler(ch)

    logger.addHandler(fh)

    return logger

logger.py

import os

import json

import logging

from core import db_handler

from conf import settings

from core import logger

from core import auth

user_logger = logger.logger('login_in')

None_user_data = {

        'user_id': None,

        'user_data': None,

        'is_auth': False

}

def show_user(user_data):

    print(user_data)

def drow_money(user_data):

    auth.withdraw(user_data)

def repay_money(user_data):

    auth.repay(user_data)

def tran_money(user_data):

    auth.transfer(user_data)

def spend_bill(user_data):

    auth.spend()

def logout(user_data):

    print("欢迎下次光临")

    exit()

def user_menu(user_data):

    print("欢迎来到信用卡操作系统".center(50, "-"))

    menu = '''

        1：显示用户信息

        2：取款

        3：存款

        4：转账

        5：打印账单

        6：退出

    '''

    menu_dic = {

        "": show_user,

        "": drow_money,

        "": repay_money,

        "": tran_money,

        "": spend_bill,

        "": logout

    }

    print(menu)

    flag = False

    while not flag:

        choice = input("请输入要操作的项>>>").strip()

        if choice in menu:

            menu_dic[choice](user_data)

        else:

            print("no exit")

def login_auth(accounts, password):

    db_path = db_handler.db_handler(settings.DATABASE)  # D:\python代码\ＡＴＭ/db/accounts

    # print(db_path)

    user_file = "%s\%s.json" % (db_path, accounts)  # D:\python代码\ＡＴＭ/db/accounts/1234

    # print(user_file, "111111111")

    if os.path.isfile(user_file):

        # print("---------------------")

        with open(user_file, "r") as f:

            accounts_data = json.load(f)  # 打开db里的用户信息

            # print(accounts_data['password'],type(accounts_data['password']),"+++++++++++++++++")

            if accounts_data['password'] == password:

                # print("aaaaaaaaaaaaaaaaaaaaaa")

                return accounts_data

            else:

                print("error")

    else:

        print("no exit!!!")

def login(None_user_data,log_obj):

    count = 0

    while None_user_data['is_auth'] is not True and count < 3:

        accounts = input("输入用户名>>>").strip()

        password = input("输入密码>>>").strip()

        new_user = login_auth(accounts, password)

        # print(new_user,"....................")

        if new_user:

            None_user_data['is_auth'] = True

            None_user_data['user_id'] = accounts

            return new_user

        count += 1

    else:

        log_obj.debug("Please check the account number or password")

        exit()

def run():

    #验证用户名id和密码

    user_data = login(None_user_data,user_logger)

    print(user_data)

    # print(None_user_data)

    if None_user_data['is_auth']:

        None_user_data['user_data'] = user_data

        # print(None_user_data)

        user_menu(user_data)

main.py

import json

acc_dic = {

    'id': 1234,

    'password': 'abc',

    'credit': 15000,

    'balance': 30000,

    'enroll_date': '2016-01-02',

    'expire_date': '2021-01-01',

    'pay_day': 22,

    'status': 0

}

# print(json.dumps(acc_dic))

with open("1234.json","w") as f:

    json.dump(acc_dic,f)

account_sample.py

import os

import sys

import json

#

base_dir = os.path.dirname(os.path.dirname(__file__))

# print(base_dir)

# sys.path.append(base_dir)

db_path = "%s/ATM主目录" % (base_dir)

sys.path.append(db_path)

from core import db_handler

from conf import settings

from db import account_sample

from core import auth

user_data_file = "%s/accounts" %(db_path)

shop_file = "%s/shpping_mall/shop1.json" % (base_dir)

shop_list = []

# shop_car = {}

if os.path.isfile(shop_file):

    with open(shop_file, "r") as f:

        shop1 = json.load(f)

        shop_car = {}

        for i in shop1:

            print(i['name'], i['price'])

        # print(shop1)

        counts = input("输入你的信用卡ID")

        while True:

            shop_choice = input("请输入你想购买的商品，退出结算请按 q/Q>>>>>")

            if shop_choice.lower() == "q":

                break

            for item in shop1:

                if item['name'] == shop_choice:

                    name = item['name']

                    if name in shop_car.keys():

                       shop_car[name]['num'] += 1

                    else:

                        shop_car[name] = {'num': 1, 'price': item['price']}

        print("您购买的商品%s" % (shop_car))

        all_money = 0

        for k, v in shop_car.items():

            n = v['price']

            m = v['num']

            money = n * m

            all_money = all_money + money

        print(all_money)

        auth.xiaofei(all_money,counts)

else:

    print("no shop_file!!!")

go_shopping.py

下面是执行过程中打印的日志信息

2016-09-23 23:19:43,010 - access - DEBUG - this trans is success and you remain 439994.2000000001 money

2016-09-23 23:19:48,881 - access - DEBUG - this trans is success and you remain 429494.2000000001 money

2016-09-23 23:20:00,706 - access - DEBUG - this trans is success and you remain 429694.2000000001 money

2016-09-23 23:20:16,022 - access - DEBUG - this trans is success and you remain 430260.2000000001 money

2016-09-23 23:20:34,724 - access - DEBUG - this trans is success and you remain 429992.416570.150004500000001 money

2016-09-23 23:20:49,748 - access - DEBUG - this trans is success and you remain 416840.15000000014 money

2016-09-23 23:23:41,075 - access - DEBUG - this trans is success and you spend 60 money

2016-09-23 23:25:34,224 - access - DEBUG - this trans is success and you remain 000014 money

2016-09-27 12:27:03,227 - access - DEBUG - this trans is success and you remain 416360.15000000014 money

2016-09-27 12:28:05,456 - access - DEBUG - this trans is success and you remain 416150.15000000014 money

2016-09-27 12:28:53,546 - access - DEBUG - this trans is success and you remain 415940.15000000014 money

2016-09-23 22:56:38,035 - login_in - DEBUG - Please check the account number or password

　　

　

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