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）
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()
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': '%sdb' % 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}, }
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
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 = "%slog\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('20d{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
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)
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 = "%slog\%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
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 = { "1": show_user, "2": drow_money, "3": repay_money, "4": tran_money, "5": spend_bill, "6": 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)
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)
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!!!")
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