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': '%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},
}
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 = "%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
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 = "%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
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
来源：http://www.cnblogs.com/flash55/p/5922376.html