模拟实现ATM与购物商城
程序员文章站
2022-07-09 21:34:09
一、功能介绍（第6条未实现）模拟实现一个ATM + 购物商城程序1额度15000或自定义2实现购物商城，买东西加入购物车，调用信用卡接口结账3可以提现，手续费5%4支持多账户登录5支持账户间转账6记录每月日常消费流水7提供还款接口8ATM记录操作日志9提供管理接口，包括添加账户、用户额度，冻结账户等 ......
一、功能介绍（第6条未实现）
模拟实现一个ATM + 购物商城程序
1额度15000或自定义
2实现购物商城，买东西加入购物车，调用信用卡接口结账
3可以提现，手续费5%
4支持多账户登录
5支持账户间转账
6记录每月日常消费流水
7提供还款接口
8ATM记录操作日志
9提供管理接口，包括添加账户、用户额度，冻结账户等。。。
10用户认证用装饰器
二、实现流程图
三、程序目录结构
ATM_WHW
├── whw_atm
├── README.txt
├── atm #入口程序目录
│ ├── __init__.py
│ └── main.py #入口程序(启动程序)
├── conf #配置文件目录
│ ├── __init__.py
│ └── setting.py #里面包含日志的相关设置
├── logics #程序核心逻辑目录
│ ├── __init__.py
│ ├── admin_opera.py #管理员模块(用户名与密码均是：admin)
│ ├── authentication.py #认证模块，实现三种不同的登录模式
│ ├── creditcard_opera.py #信用卡操作模块
│ ├── shoppingmall.py #购物商城模块
│ ├── logger_opera.py #日志实现逻辑模块
├── db #程序所用到的静态数据(今后会是数据库的动态数据操作)
│ ├── creditcard_dict #信用卡信息
│ ├── productlist #商城产品信息
│ └── shopping_car #购物车信息
│ └── users_dict #用户信息
└── logs
├── __init__.py
└── access.log #记录操作日志
└── transactions.log #记录信用卡相关日志
四、具体模块代码
1.main.py
import os
import sys
from logics import authentication,shoppingmall,creditcard_opera,admin_opera
#程序主目录
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
#为程序添加环境变量
sys.path.append(BASE_DIR)
while 1:
message = '''
1: 购物中心
2: 信用卡中心
3: 账户及信用卡管理
q: 退出系统
'''
print('欢迎进入信用卡及购物管理系统'.center(30,'#'))
print(message)
choice = input('请输入您想操作的编号：')
if not choice or choice not in ['1','2','3','q']:
print('请输入正确的编号!!!')
continue
if choice == '1':
res = authentication.user_auth()
if res != None:
if res[0] == "True":
current_user = res[1]#当前用户名
shoppingmall.clear_shopping_car()
while 1:
print('欢迎进入购物中心'.center(30,'#'),
'\n1：购物商场\n'
'2：查看购物车\n'
'3：购物结算\n'
'4：个人中心\n'
'b：返回\n'
)
choice = input('请输入要进行操作的对应编号：')
if choice == '1':
shoppingmall.shopping_mall()
elif choice == '2':
shoppingmall.shopping_car()
elif choice == '3':
shoppingmall.shopping_pay(current_user)
elif choice == '4':
while 1:
print('欢迎进入个人中心'.center(30,'^'),
'\n1：绑定信用卡\n'
'2：修改登陆密码\n'
'b：返回上一级菜单'
)
choice = input('请输入对应操作的编号：')
if choice == 'b':
break
elif choice == '1':
shoppingmall.creditcard_linked(current_user)
elif choice == '2':
shoppingmall.revise_password(current_user)
else:
print('请输入正确的编号！')
elif choice == 'b':
break
elif choice == '2':
res = authentication.creditcard_auth()
###############################################
if res != None:
if res[0] == 'True':
current_creditcard = res[1]
while 1:
print('欢迎进入信用卡中心'.center(30,'#'),
'\n1：信用卡信息\n'
'2：提现\n'
'3：转账\n'
'4：还款\n'
'b：返回')
choice_c = input('请输入您要进行的操作代码：')
if choice_c not in ['1','2','3','4','b'] or not choice_c:
print('请输入正确的编号！')
continue
elif choice_c == 'b':
break
elif choice_c == '1':
creditcard_opera.creditcard_msg(current_creditcard)
elif choice_c == '2':
creditcard_opera.creditcard_cash(current_creditcard)
elif choice_c == '3':
creditcard_opera.creditcard_transfer(current_creditcard)
elif choice_c == '4':
creditcard_opera.creditcard_payback(current_creditcard)
elif choice == '3':
res = authentication.admin_auth()
if res != None:
while 1:
print('管理员中心'.center(30,'#'),
"\n1：创建账号\n"
"2：锁定账号\n"
"3：解锁账号\n"
"4：新建信用卡\n"
"5：冻结信用卡\n"
"6：解冻信用卡\n"
"b：返回"
)
choice = input('请输入要进行的操作编号：')
if not choice or choice not in ['1','2','3','4','5','6','b']:
print('请输入正确的编号！')
continue
elif choice == 'b':
break
elif choice == '1':
admin_opera.create_user()
elif choice == '2':
admin_opera.user_locked()
elif choice == '3':
admin_opera.user_unlock()
elif choice == '4':
admin_opera.create_creditcard()
elif choice == '5':
admin_opera.lock_creditcard()
elif choice == '6':
admin_opera.unlock_creditcard()
elif choice == 'q':
print('退出程序！')
exit()
2.setting.py
import os,logging
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
LOG_LEVEL = logging.INFO
LOG_TYPES = {
'transaction':'transactions.log',
'access':'access.log'
}
LOG_PATH = os.path.join(BASE_DIR,'logs')
LOG_FORMAT = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s' )
3.db文件夹中的内容（存放的都是静态数据）
（1）creditcard_dict.json
{"666666": {"personinfo": "lisi", "password": "123", "limit": 2569, "locked": 0, "limitcash": 7500, "creditcard": "666666"}, "123456": {"personinfo": "whw", "password": "123", "limit": 9807.45, "locked": 0, "limitcash": 7500, "creditcard": "123456"}, "888888": {"personinfo": "zhangsan", "password": "123", "limit": 11313, "locked": 0, "limitcash": 7500, "creditcard": "888888"}, "654321": {"personinfo": "zhaosi", "password": "123", "limit": 14478, "locked": 0, "limitcash": 7500, "creditcard": "654321"}, "777777": {"personinfo": "wangwu", "password": "123", "limit": 14288, "locked": 0, "limitcash": 7500, "creditcard": "777777"}, "000000": {"personinfo": "wanghw", "password": "123", "limit": 11001, "locked": 0, "limitcash": 7500, "creditcard": "000000"}, "111111": {"personinfo": "fff", "password": "123", "limit": 15000, "locked": 0, "limitcash": 7500, "creditcard": "111111"}, "785458": {"personinfo": "ttt", "password": "123", "limit": 15000, "locked": 0, "limitcash": 7500, "creditcard": "785458"}, "999999": {"personinfo": "uuu", "password": "123", "limit": 14334, "locked": 0, "limitcash": 7500, "creditcard": "999999"}, "222222": {"personinfo": "ooo", "password": "123", "limit": 15000, "locked": 0, "limitcash": 7500, "creditcard": "222222"}, "909090": {"personinfo": "blank", "password": "123", "limit": 15000, "locked": 0, "limitcash": 7500, "creditcard": "909090"}}
（2）publiclist.json
Computer 2299 1080Ti 3999 keyboard 999 Cookbook 199 MATE10 3999 Beauty 1099 Dragon 666
（3）shoppingcar仅是一个临时存放数据的地方，当用户退出或者结账后里面的数据自动清空
（4）user_dict.json
{"zhangsan": {"creditcard": "888888", "locked": 0, "username": "zhangsan", "password": "123"}, "lisi": {"creditcard": "666666", "password": "123", "username": "lisi", "locked": 0}, "wangwu": {"creditcard": "777777", "locked": 0, "username": "wangwu", "password": "333"}, "zhaosi": {"creditcard": "654321", "password": "123", "username": "zhaosi", "locked": 0}, "whw": {"creditcard": "123456", "password": "123", "username": "whw", "locked": 0}, "www": {"username": "www", "password": "123", "creditcard": "0", "locked": 0}, "eee": {"username": "eee", "password": "123", "creditcard": "0", "locked": 1}, "wanghw": {"username": "wanghw", "password": "123", "creditcard": "000000", "locked": 0}, "fff": {"username": "fff", "password": "123", "creditcard": "111111", "locked": 0}, "ttt": {"username": "ttt", "password": "123", "creditcard": "785458", "locked": 0}, "rrr": {"username": "rrr", "password": "123", "creditcard": "0", "locked": 0}, "uuu": {"username": "uuu", "password": "123", "creditcard": "999999", "locked": 0}, "ooo": {"username": "ooo", "password": "321", "creditcard": "222222", "locked": 0}, "rty": {"username": "rty", "password": "123", "creditcard": "0", "locked": 0}}
4.logics文件夹中的内容（都是本程序的后台逻辑）
（1）admin_opera.py
import os,json
from .logger_opera import logger
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
#信用卡与用户文件的相对路径
_user_dict = BASE_DIR + r'\db\user_dict.json'
_creditcard_dict = BASE_DIR + r'\db\creditcard_dict.json'
#负责记录各种操作
access_logger = logger('access')
#创建账户
def create_user(creditcard='0',locked=0):
while 1:
print('创建用户'.center(30,'*'))
f_user_dict = open(_user_dict,'r+')
user_dict = json.loads(f_user_dict.read())
print('现有账户名信息如下：')
for i,v in enumerate(user_dict,1):
print('%s：%s' % (i,v))
username = input('请输入要添加的账户名：')
password = input('请输入想要添加的密码：')
if username not in user_dict.keys():
if len(username.strip()) > 0:
if len(password.strip()) > 0:
#添加用户
user_dict[username] = {"username": username, "password": password, "creditcard": creditcard, "locked": locked}
new_user_dict = json.dumps(user_dict)
f_user_dict.seek(0)
f_user_dict.truncate(0)
f_user_dict.write(new_user_dict)
access_logger.info('create a new user: %s ' % username)
print("创建用户 %s 成功" % (username))
print('添加后的账户名信息如下：')
for i, v in enumerate(user_dict, 1):
print('%s：%s' % (i, v))
break
else:
print("输入的密码为空")
else:
print("输入的用户名为空")
else:
print("用户名 %s 已经存在" % (username))
#锁定账号
def user_locked():
while 1:
print('锁定账户'.center(30,'+'))
f_user_dict = open(_user_dict,'r+')
user_dict = json.loads(f_user_dict.read())
print('账户锁定状态如下：')
for i in user_dict:
if user_dict[i]['locked'] == 0:
print('用户 %s 未被锁定!' % i)
else:
print('用户 %s 已被锁定' % i)
lock_input = input('请输入要锁定的用户：')
if not lock_input:continue
if lock_input in user_dict.keys():
sure = input('是否确定进行锁定操作？确定【y】,返回上一级【b】')
if sure == 'y':
if user_dict[lock_input]['locked'] == 0:
user_dict[lock_input]['locked'] = 1
new_user_dict = json.dumps(user_dict)
f_user_dict.seek(0)
f_user_dict.truncate(0)
f_user_dict.write(new_user_dict)
print('账户 %s 锁定成功！' % lock_input)
access_logger.info('user %s just be locked!' % lock_input)
print('修改后的账户锁定状态如下：')
for i in user_dict:
if user_dict[i]['locked'] == 0:
print('用户 %s 未被锁定!' % i)
else:
print('用户 %s 已被锁定' % i)
break
else:
print('操作失败！该账户之前已被锁定！')
elif sure == 'b':
break
else:
print('请输入正确的操作编码！')
break
else:
print('账户名不存在，请重新输入！')
continue
#解锁账号
def user_unlock():
while 1:
print('解锁用户'.center(30,'-'))
f_user_dict = open(_user_dict, 'r+')
user_dict = json.loads(f_user_dict.read())
print('账户锁定状态如下：')
for i in user_dict:
if user_dict[i]['locked'] == 0:
print('用户 %s 未被锁定!' % i)
else:
print('用户 %s 已被锁定' % i)
unlock_input = input('请输入需要解锁的用户：')
if not unlock_input:continue
if unlock_input in user_dict.keys():
sure = input('是否确定进行解锁操作？确定【y】,返回上一级【b】')
if sure == 'y':
if user_dict[unlock_input]['locked'] != 0:
user_dict[unlock_input]['locked'] = 0
new_user_dict = json.dumps(user_dict)
f_user_dict.seek(0)
f_user_dict.truncate(0)
f_user_dict.write(new_user_dict)
print('账户 %s 解锁成功！' % unlock_input)
access_logger.info('user %s just be unlocked!' % unlock_input)
print('修改后的账户锁定状态如下：')
for i in user_dict:
if user_dict[i]['locked'] == 0:
print('用户 %s 未被锁定!' % i)
else:
print('用户 %s 已被锁定' % i)
break
else:
print('操作失败！该账户之前未被锁定！')
elif sure == 'b':
break
else:
print('请输入正确的操作编码！')
break
else:
print('账户名不存在，请重新输入！')
continue
#新建信用卡
def create_creditcard(personinfo='blank',limit=15000,locked=0,limitcash=7500):
while 1:
print('新建信用卡'.center(30,'+'))
f_creditcard_dict = open(_creditcard_dict,'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
print('现有信用卡信息如下：')
for index in creditcard_dict:
print('信用卡 %s >> 持卡人 %s'% (index,creditcard_dict[index]['personinfo']))
new_card = input('请输入要发行的信用卡卡号：')
if not new_card:continue
if new_card.isdigit():
if len(new_card.strip()) == 6:
if new_card not in creditcard_dict.keys():
password = input('请输入新增信用卡的密码：')
if len(password.strip()) > 0:
#新增信用卡
creditcard_dict[new_card] = {"personinfo": personinfo, "password": password, "limit": limit, "locked": 0,
"limitcash": limit//2, "creditcard": new_card}
new_creditcard_dict = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(new_creditcard_dict)
access_logger.info('create a new creditcard: %s ' % new_card)
print('信用卡新增成功！新的信用卡信息如下：')
for index in creditcard_dict:
print('信用卡 %s >> 持卡人 %s'% (index,creditcard_dict[index]['personinfo']))
break
else:
print('信用卡密码不能为空！')
else:
print('该卡号已存在！')
else:
print('信用卡卡号必须是6位数字！')
else:
print('请输入数字！')
#冻结信用卡
def lock_creditcard():
while 1:
print('冻结信用卡'.center(30,'-'))
f_creditcard_dict = open(_creditcard_dict, 'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
print('现有信用卡信息如下：')
for index in creditcard_dict:
if creditcard_dict[index]['locked'] == 0:
print('信用卡 %s >>> %s' % (index,'未冻结'))
else:
print('信用卡 %s >>> %s' % (index, '已冻结'))
lock_card = input('请输入要冻结的信用卡卡号：')
if lock_card.isdigit() and len(lock_card) ==6:
if lock_card in creditcard_dict.keys():
if_lock = input('是否冻结该信用卡：%s。确认【y】,返回【b】' % lock_card)
if if_lock == 'b':
break
elif if_lock == 'y':
creditcard_dict[lock_card]['locked'] = 1
new_creditcard_dict = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(new_creditcard_dict)
access_logger.info('creditcard %s just be locked!' % lock_card)
print('信用卡 %s 已成功冻结！' % lock_card)
print('更改后的信用卡信息如下：')
for index in creditcard_dict:
if creditcard_dict[index]['locked'] == 0:
print('信用卡 %s >>> %s' % (index, '未冻结'))
else:
print('信用卡 %s >>> %s' % (index, '已冻结'))
break
else:
print('请输入正确的操作信息！')
else:
print('该信用卡卡号不存在！')
else:
print('请输入正确的卡号格式！')
continue
#解冻信用卡
def unlock_creditcard():
while 1:
print('解冻信用卡'.center(30,'-'))
f_creditcard_dict = open(_creditcard_dict, 'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
print('现有信用卡信息如下：')
for index in creditcard_dict:
if creditcard_dict[index]['locked'] == 0:
print('信用卡 %s >>> %s' % (index,'未冻结'))
else:
print('信用卡 %s >>> %s' % (index, '已冻结'))
ulock_card = input('请输入要解冻的信用卡卡号：')
if ulock_card.isdigit() and len(ulock_card) ==6:
if ulock_card in creditcard_dict.keys():
if_lock = input('是否解冻该信用卡：%s。确认【y】,返回【b】' % ulock_card)
if if_lock == 'b':
break
elif if_lock == 'y':
creditcard_dict[ulock_card]['locked'] = 0
new_creditcard_dict = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(new_creditcard_dict)
access_logger.info('creditcard %s just be unlocked!' % ulock_card)
print('信用卡 %s 已成功解冻！' % ulock_card)
print('更改后的信用卡信息如下：')
for index in creditcard_dict:
if creditcard_dict[index]['locked'] == 0:
print('信用卡 %s >>> %s' % (index, '未冻结'))
else:
print('信用卡 %s >>> %s' % (index, '已冻结'))
break
else:
print('请输入正确的操作信息！')
else:
print('该信用卡卡号不存在！')
else:
print('请输入正确的卡号格式！')
continue
（2）authentication.py
import os
import json
#程序主目录
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
#数据库文件：用户文件与信用卡文件——相对路径
users_dict = BASE_DIR + r'\db\user_dict.json'
creditcard_dict = BASE_DIR + r'\db\creditcard_dict.json'
#认证——装饰器
def login(auth_type):
def auth(func):
#用户名认证
if auth_type == 'user_auth':
def inner():
res = func()
n = 0
while n < 3:#用户有三次输入的机会
username = input('请输入用户名：')
password = input('请输入密码：')
if not username or not password:
print('用户名或密码不能为空，请重新输入！')
n += 1
continue
f = open(users_dict,'r+')
users_dict_j = json.loads(f.read())#loads
if username in users_dict_j.keys():
if password in users_dict_j[username]["password"]:
if users_dict_j[username]['locked'] == 0:
print('用户 %s 认证成功！' % username)
return res,username
else:
print('用户 %s 已被锁定！' % username)
break
else:
print('密码不匹配！')
n += 1
continue
else:
print('用户名不匹配！')
n += 1
continue
return inner
#信用卡认证
if auth_type == 'creditcard_auth':
def inner():
res = func()
n = 0
while n < 3:
creditcard = input('请输入信用卡卡号（6位数字）：')
password = input('请输入信用卡密码：')
if not creditcard or not password:
print('卡号或者密码不能为空，请重新输入！')
n += 1
continue
f = open(creditcard_dict,'r+')
creditcard_dict_j = json.loads(f.read())
if creditcard in creditcard_dict_j.keys():
if password in creditcard_dict_j[creditcard]['password']:
if creditcard_dict_j[creditcard]['locked'] == 0:
print('信用卡 %s 认证成功！' % creditcard)
return res,creditcard
else:
print('该信用卡已被冻结！')
break
else:
print('密码错误！')
n += 1
continue
else:
print('卡号错误！')
n += 1
continue
return inner
#管理员认证
if auth_type == 'admin_auth':
def inner():
res = func()
#规定admin账户只能是这一个唯一的账户
admin_dict = {'admin':'admin'}
n = 0
while n < 3:
admin_name = input('请输入管理员账户：')
admin_password = input('请输入管理员密码：')
if not admin_name or not admin_password:
print('账户名或密码不能为空！')
n += 1
continue
if admin_name in admin_dict:
if admin_password in admin_dict:
print('管理员账户 %s 认证成功！' % admin_name)
return res,admin_name
else:
print('密码不匹配！！')
n += 1
continue
else:
print('管理员账户名不匹配：')
n += 1
continue
return inner
return auth
#用户以三种方式登陆：用户名、信用卡、后台管理员
@login('user_auth')
def user_auth():
print('用户登陆认证：'.center(30,'+'))
return 'True'
@login('creditcard_auth')
def creditcard_auth():
print('信用卡登陆认证：'.center(30,'+'))
return 'True'
@login('admin_auth')
def admin_auth():
print('后台管理员登陆认证：'.center(30,'+'))
return 'True'
（3）creditcard_opera.py
import os,json
from.logger_opera import logger
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
#信息文件的相对路径：
_creditcard_dict = BASE_DIR + r'\db\creditcard_dict.json'
#负责记录各种交易
transaction_logger = logger('transaction')
#本信用卡信息
def creditcard_msg(current_creditcard):
while 1:
print('本信用卡信息：'.center(30,'*'))
f_creditcard_dict = open(_creditcard_dict,'r')
creditcard_dict = json.loads(f_creditcard_dict.read())
#先判断提现额度
if creditcard_dict[current_creditcard]['limitcash'] <= creditcard_dict[current_creditcard]['limit']:
limitcash = creditcard_dict[current_creditcard]['limitcash']
else:
limitcash = creditcard_dict[current_creditcard]['limit']
print("卡号：\t【%s】\n余额:\t【￥%s】\n提现额度:\t【￥%s】\n持卡人:\t【%s】\n"%(current_creditcard,
creditcard_dict[current_creditcard]["limit"],limitcash,creditcard_dict[current_creditcard]["personinfo"]))
choice = input('是否返回？【b】返回')
if choice == 'b':
break
else:
print('请输入【b】返回')
continue
#提现
def creditcard_cash(current_creditcard):
while 1:
print('信用卡提现操作（手续费为%5）'.center(30,'*'))
f_creditcard_dict = open(_creditcard_dict,'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
limit = creditcard_dict[current_creditcard]['limit']
limitcash = creditcard_dict[current_creditcard]['limitcash']
if limit >= limitcash:
print('可提现的金额为：%s' % limitcash)
cash_input = input('请输入要提取的金额：')
if not cash_input or not cash_input.isdigit():#输入为空或非数字
print('请输入数字！')
continue
cash = int(cash_input)
if cash != 0:
if cash <= limitcash:
limit = limit - (cash*1.05)
creditcard_dict[current_creditcard]['limit'] = limit
creditcard_dict_new = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(creditcard_dict_new)
#日志
transaction_logger.info('信用卡 %s 提现 %s元' % (current_creditcard,cash_input))
print('提现成功！当前余额为： %s ' % creditcard_dict[current_creditcard]['limit'])
break
else:
print('提现金额超出信用卡限额！')
else:
print('提现金额不能为空！')
if limit < limitcash:
print("可提现金额:【%s】(扣除0.05手续费)\n" % (int(limit*0.95)))
cash_input = input('请输入要提取的金额：')
if not cash_input or not cash_input.isdigit(): # 输入为空或非数字
print('请输入数字！')
continue
cash = int(cash_input)
if cash != 0:
if cash < limit*0.95:
limit = limit - (cash * 1.05)
creditcard_dict[current_creditcard]['limit'] = limit
creditcard_dict_new = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(creditcard_dict_new)
# 日志
transaction_logger.info('信用卡 %s 提现 %s元' % (current_creditcard, cash_input))
print('提现成功！当前余额为： %s ' % creditcard_dict[current_creditcard]['limit'])
break
else:
print('提现金额超出信用卡限额！')
else:
print('提现金额不能为空！')
#转账
def creditcard_transfer(current_creditcard):
while 1:
print('信用卡转账'.center(30,'*'))
f_creditcard_dict = open(_creditcard_dict,'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
trans_input = input('（您的余额为%s）请输入要转入的卡号：' % creditcard_dict[current_creditcard]['limit'])
if trans_input or trans_input.isdigit() or len(trans_input) == 6:
if trans_input in creditcard_dict.keys():
transfer_cash = input('请输入您要转入的金额：')
if transfer_cash or transfer_cash.isdigit():
transfer_cash = int(transfer_cash)
if transfer_cash < creditcard_dict[current_creditcard]['limit']:
creditcard_dict[current_creditcard]['limit'] -= transfer_cash
creditcard_dict[trans_input]['limit'] += transfer_cash
creditcard_dict_new = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(creditcard_dict_new)
# 日志
transaction_logger.info('信用卡 %s 给信用卡 %s 转账 %s元' % (current_creditcard,trans_input,transfer_cash))
print('转账成功！您的当前余额为： %s' % (creditcard_dict[current_creditcard]['limit']))
break
else:
print('对不起，您的金额不足，转账失败！')
else:
print('金额输入有误！')
else:
print('该信用卡卡号不存在！')
else:
print('银行卡号输入有误！')
#还款
def creditcard_payback(current_creditcard):
while 1:
print('信用卡还款'.center(30,'*'))
f_creditcard_dict = open(_creditcard_dict,'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
payback = input('请输入还款金额：')
if payback and payback.isdigit():
payback = int(payback)
creditcard_dict[current_creditcard]['limit'] += payback
new_creditcard_dict = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(new_creditcard_dict)
# 日志
transaction_logger.info('信用卡 %s 还款 %s元' % (current_creditcard, payback))
print('信用卡 %s 还款成功！当前余额为：%s' % (current_creditcard,creditcard_dict[current_creditcard]['limit']))
break
else:
print('请输入正确的金额！')
（4）logger_opera.py
import logging,os
from conf import settings
def logger(log_type):
#新建日志
logger = logging.getLogger(log_type)
#拿到settings文件里的LOG_LEVEL：当前设置为logging.INFO
logger.setLevel(settings.LOG_LEVEL)
#根据log_type 决定往哪个log文件里写
log_file = os.path.join(settings.LOG_PATH,settings.LOG_TYPES[log_type])
#决定往哪里写后进行操作
fh = logging.FileHandler(log_file)
fh.setLevel(settings.LOG_LEVEL)
formatter = settings.LOG_FORMAT
#formatter：
fh.setFormatter(formatter)
logger.addHandler(fh)
return logger
（5）shoppingmall.py
import json,os
from .logger_opera import logger
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
#数据库文件的相对路径：
_user_dict = BASE_DIR + r'\db\user_dict.json'
_creditcard_dict = BASE_DIR + r'\db\creditcard_dict.json'
_productlist = BASE_DIR + r'\db\productlist.json'
_shoppingcar = BASE_DIR + r'\db\shoppingcar'
#负责记录各种交易
transaction_logger = logger('transaction')
#清空购物车
def clear_shopping_car():
f = open(_shoppingcar,'w')
l = json.dumps([])
f.write(l)
#购物商城
def shopping_mall():
shopping_list,pro_list = [],[]
f_pro = open(_productlist,'r')
for i in f_pro:
#得到商品列表，pro_list里面是：[['computer', '2299'], ['1080Ti', '3999'], ...]
pro_list.append(i.strip("\n").split())
while 1:
print(('商城目前正在出售的商品及价格信息：').center(30,'#'))
print('编号\t商品\t\t\t价格')
for i,v in enumerate(pro_list):
print('%s\t%s: %s' % (i,v[0],v[1]))#打印商品列表
choice = input('请输入想要购买的商品编号或者输入\'b\'返回：')
if choice.isdigit():
choice = int(choice)
if 0 <= choice < len(pro_list):
pro_item = pro_list[choice]
print('已将商品 %s 加入购物车，价格为%s '% (pro_item[0],pro_item[1]))
shopping_list.append(pro_item)
else:
print('错误！没有对应的编号，请重新输入！')
elif choice == 'b':
f_shopping_car = open(_shoppingcar,'r+')
list_s = json.loads(f_shopping_car.read())
#注意这里是extend而不是append，append会使价格v[1]取成一个列表
list_s.extend(shopping_list)
f_shopping_car.seek(0)
f_shopping_car.truncate(0)
list_s = json.dumps(list_s)
f_shopping_car.write(list_s)
break
else:
print('错误~没有对应的编号，请重新输入！')
#查看购物车
def shopping_car():
while 1:
f_shopping_car = open(_shoppingcar,'r+')
l_shopping_car = json.loads(f_shopping_car.read())
n = 0
print('购物车信息清单如下：'.center(30,'*'))
for i,v in enumerate(l_shopping_car):
print(i,v[0],v[1])
n += int(v[1])#计算商品总价格
print('购物车中商品的总额为：%d 元' % n)
choice_in = input('请选择要进行的操作：返回【b】/清空【c】')
if choice_in == 'b':
break
elif choice_in == 'c':
clear_shopping_car()
else:
print('请重新输入正确的编号')
#购物结算前进行信用卡密码认证
def Auth_creditcard(creditcard):
with open(_creditcard_dict, "r+") as f_creditcard_dict:
creditcard_dict = json.loads(f_creditcard_dict.read())
passwd = input("当前信用卡 %s 请输入支付密码：:" % (creditcard))
if passwd == creditcard_dict[creditcard]["password"]:
return True
else:
print("密码输入错误，支付失败")
#购物结算
def shopping_pay(current_user):
while 1:
money = 0
print('购物结算'.center(30,'$'))
f_shopping_car = open(_shoppingcar,'r+')
l_shopping_car = json.loads(f_shopping_car.read())
for item in l_shopping_car:
money += int(item[1]) #购物车里商品的总钱数
pay_input = input('当前商品总额为 %d，是否进行支付？确定【y】/返回【b】' % money)
if pay_input == 'b':
break
elif pay_input == 'y':
f_user_dict = open(_user_dict,'r+')
user_dict = json.loads(f_user_dict.read())
creditcard = user_dict[current_user]['creditcard']#找到账户对应的信用卡
if creditcard == '0':
print('账户 %s 还未绑定信用卡，请进入个人中心绑定信用卡后再进行操作' % current_user)
else:
f_creditcard_dict = open(_creditcard_dict,'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
limit = creditcard_dict[creditcard]['limit']
limit_new = limit - money
if limit_new < 0:
print('当前信用卡额度为:%s元，不足以支付购物款:%s元',(limit,money))
else:
res = Auth_creditcard(creditcard)
if res == True:
creditcard_dict[creditcard]['limit'] = limit_new
new_creditcard_dict = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(new_creditcard_dict)
print('支付成功，当前余额为 %s元' % limit_new)
#记录日志
transaction_logger.info('用户 %s 购买产品花费 %s' %(current_user,money))
clear_shopping_car()#最后清空当前购物车
break
#信用卡绑定
def creditcard_linked(current_user):
while 1:
print('信用卡绑定'.center(30,'*'))
f_user_dict = open(_user_dict,'r+')
user_dict = json.loads(f_user_dict.read())
creditcard = user_dict[current_user]['creditcard']
if creditcard == '0':
print('当前账号 %s 未绑定信用卡' % current_user)
else:
print('当前账号 %s 已经绑定了信用卡：%s，不可以重复绑定！' % (current_user,creditcard))
break
link_input = input('是否要修改信用卡绑定？ 确定【y】/返回【b】')
if link_input.strip() == 'b':
break
if link_input.strip() == 'y':
creditcard_new = input('请输入新的信用卡卡号（6位数字）：')
if creditcard_new.isdigit() and len(creditcard_new) == 6:
f_creditcard_dict = open(_creditcard_dict,'r+')
creditcard_dict = json.loads(f_creditcard_dict.read())
if creditcard_new not in creditcard_dict.keys():
print('输入信用卡卡号不存在(或者未发行)！')
#信用卡的持卡人信息为blank(代表这个卡没有人绑定)
if creditcard_dict[creditcard_new]['personinfo'] == 'blank':
creditcard_dict[creditcard_new]['personinfo'] = current_user
user_dict[current_user]['creditcard'] = creditcard_new
#新的信用卡信息
dict_creditcard = json.dumps(creditcard_dict)
f_creditcard_dict.seek(0)
f_creditcard_dict.truncate(0)
f_creditcard_dict.write(dict_creditcard)
#新的人员信息
dict_users = json.dumps(user_dict)
f_user_dict.seek(0)
f_user_dict.truncate(0)
f_user_dict.write(dict_users)
#记录日志
transaction_logger.info('用户 %s 绑定信用卡 %s！' % (current_user,creditcard_new))
print('用户 %s 已成功绑定信用卡 %s！' % (current_user,creditcard_new))
break
else:
print('信用卡 %s 已绑定用户，不可以再绑定！' % creditcard_new)
else:
print('请输入正确格式的信用卡卡号')
else:
print('请输入正确的操作编号！')
#修改登陆密码
def revise_password(current_user):
while 1:
print('修改用户登陆密码'.center(30,'*'))
f_user_dict = open(_user_dict,'r+')
user_dict = json.loads(f_user_dict.read())
old_password = user_dict[current_user]['password']
old_password_o = input('请输入旧密码：')
if old_password_o != old_password:
print('旧密码不正确！')
break
new_password = input('请输入新密码：')
new_password_again = input('请确认新密码：')
if new_password == new_password_again:
user_dict[current_user]['password'] = new_password
new_user_dict = json.dumps(user_dict)
f_user_dict.seek(0)
f_user_dict.truncate(0)
f_user_dict.write(new_user_dict)
#记录日志
transaction_logger.info('用户 %s 修改了密码' % current_user)
print('用户 %s 密码修改成功！' % current_user)
break
else:
print('两次输入的密码不一致！')
break
5.logs文件夹中的内容（存放的都是日志信息）
（1）access.log
2018-04-17 17:41:37,130 - access - INFO - create a new user: rty 2018-04-17 17:41:49,616 - access - INFO - user rty just be locked! 2018-04-17 17:41:56,711 - access - INFO - user rty just be unlocked! 2018-04-17 17:42:08,399 - access - INFO - create a new creditcard: 909090 2018-04-17 17:42:21,666 - access - INFO - creditcard 909090 just be locked! 2018-04-17 17:42:29,636 - access - INFO - creditcard 909090 just be unlocked! 2018-04-17 18:01:53,331 - access - INFO - creditcard 000000 just be unlocked!
（2）transactions.log
2018-04-17 17:34:09,615 - transaction - INFO - 用户 whw 购买产品花费 4998 2018-04-17 17:34:23,226 - transaction - INFO - 用户 whw 修改了密码 2018-04-17 17:40:41,468 - transaction - INFO - 信用卡 123456 提现 333元 2018-04-17 17:40:49,250 - transaction - INFO - 信用卡 123456 给信用卡 666666 转账 11元 2018-04-17 17:40:55,188 - transaction - INFO - 信用卡 123456 还款 222元
最后，由于程序的运行情况十分繁琐这里就不再一一截图了。
本文章仅提供一种实现的思路，当然由于本人还是新手级别，所以代码在重用性与健壮性上与成熟的代码还有很大的差距，希望大家看后给一些意见，十分感谢！
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