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python 实现网上商城,转账,存取款等功能的信用卡系统

2019-11-25 16:38:25
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一、要求

二、思路

1.购物类buy

接收 信用卡类 的信用卡可用可用余额,

返回消费金额

2.信用卡(ATM)类

接收上次操作后,信用卡可用余额,总欠款,剩余欠款,存款

其中: 1.每种交易类型不单独处理金钱,也不单独记录流水账,每种交易类型调用处理金钱的函数(传入交易类型,交易金额)

    2.处理金钱的函数,调用配置文件中关于每种交易类型的加减钱和利率

返回本次操作后信用卡可用余额,总欠款,剩余欠款,存款

3.客户端

银行管理员注册登陆

普通用户注册登陆

发送需求:注册、登陆、交易类型、交易金额

4.服务器端

调用购物类,创建购物对象(购物接口)

调用信用卡(ATM)类,处理还款,转账等操作,对利息按月记录,写入文件

5.定时任务

定时执行程序,以计算利息。

三、代码

3.1配置文件

import os BASE_DIR = os.path.dirname(os.path.dirname(__file__)) #配置文件的上层目录DB_DIR=os.path.join(BASE_DIR,'db')  #数据文件夹ADMIN=os.path.join(DB_DIR,'admin')ALL_USERS=os.path.join(DB_DIR,'allusrs')A=os.path.join(BASE_DIR,'db','s')LOG=os.path.join(BASE_DIR,'log')  TRANSACTION={ 'repay':{'action':'plus','interest':0}, #还款 'withdraw':{'action':'minus','interest':0.05},#取现 'transfer':{'action':'minus','interest':0.05},#转账 'consume':{'action':'minus','interest':0},#消费 'saving':{'action':'plus','interest':0} #存款} 

3.2公共类

3.2.1购物类

class buy: goods=[   {"name": "电脑", "price": 1999},   {"name": "鼠标", "price": 10},   {"name": "游艇", "price": 20},   {"name": "美女", "price": 998},  ]  def __init__(self,money,consumption,shopping_cart,):  self.money=money  self.consumption=consumption  self.shopping_cart=shopping_cart  def gouwu(self): #购物模块  print('您的当前余额为:%d' %self.money)  num=int(input('请输入商品序号:'))  num-=1  if self.goods[num]["name"] in self.shopping_cart.keys():    #goods[num]["name"]取商品名   self.shopping_cart[self.goods[num]["name"]]['n']+=1     #商品数量+1  else:   self.shopping_cart[self.goods[num]["name"]]={"price":self.goods[num]["price"],'n':1,} # 创建购物车字典 {keys{"price":价格,数量:1}}  self.money-=self.shopping_cart[self.goods[num]["name"]]["price"]*self.shopping_cart[self.goods[num]["name"]]['n']  #单价*数量  self.consumption+=self.shopping_cart[self.goods[num]["name"]]["price"]*self.shopping_cart[self.goods[num]["name"]]['n']  def yichu(self): #移除购物车模块  c=int(input(' 请输入0/1选择是否移除购物车商品, 移除请输入1:'))  if c==1:   e=int(input(' 请输入要移除的商品序号:'))   d=self.goods[e-1]   if d in self.shopping_cart.keys():    #判断要移除的商品是否在购物车内    self.shopping_cart.remove(d)   #移除商品    self.money=self.money+self.goods[self.goods.index(d)]["price"]    #余额增加    self.consumption=self.consumption-self.goods[self.goods.index(d)]["price"] #消费总额减少   else:    print('商品不存在') def chongzhi(self): #充值模块  pay=int(input('请输入充值金额'))  self.money=self.money+pay  print('您的当前余额为:%d' % self.money) #显示当前余额  def main(self):  print('商品清单:')  for m,n in enumerate(self.goods,1):   print(m)   for v in n.values():    print(v)   print('=============')  #消费总额清零  self.consumption=0  buy=True #定义默认一直购物  while buy:   price=0 #定义初始价格   b=1 #定义默认不退出购物或充值状态   if self.money>=price:   #消费模块;金钱大于货物价格时,才能开始购物    while self.money>=price:  #计价模块,有钱就可以一直购物     self.gouwu()  #移除购物车商品模块     self.yichu()     if self.money>=0:      print('您的当前余额为:%d' %self.money)   #显示当前余额      b=int(input(' 请输入0/1选择是否继续购物, 购物请输入1:'))      if b==0:  #       break #退出计价模块    if b==0:   #如果不购物     break   #不购物退出整个购物程序  #充值模块   else:    while self.money<price:   #金钱不足,可多次充钱,直到能买得起货物     a=int(input(' 您的余额不足,请输入0/1选择是否充值,充值请输入1:'))     if a==1:      self.chongzhi()     else:      break   #退出充值模块     if a==0:      break   #不充值退出程序  #打印购物车商品名、商品价格、消费总额、余额  print('您的消费清单为:')  for m,n in self.shopping_cart.items():   print(m,n['price'],n['n'])     #打印消费清单   print('=============')  print('您的当前余额为:%d,您的消费总额为:%d' % (self.money,self.consumption) )   #打印消费总额  return self.consumption

3.2.2 信用卡ATM类

class Atm: credit=15000 #信用卡额度 def __init__(self,balance,debt,remaining_debt,interest,saving,id):  self.id=id    #信用卡id  self.balance=balance  #信用卡可用金额  self.debt=debt   #总欠款  self.remaining_debt=remaining_debt #剩余欠款  self.interest=interest  #手续费  self.saving=saving  #存款  self.now_time=time.strftime("%Y-%m-%d %H:%M:%S")  self.now_data=time.strftime("%Y-%m")  self.struct_time=time.gmtime(time.time())  if self.struct_time.tm_mday>22:   self.now_data=self.struct_time.tm_year+'-'+str(int(self.struct_time.tm_mon)+1)  def account_info(self):#打印账户信息  return '账户id%s 信用卡额度%s;信用卡可用金额%s;剩余欠款%s;'%(self.id,self.credit,self.balance,self.remaining_debt,) def ret_account_info(self):  return [self.id,self.credit,self.balance,self.debt,self.remaining_debt,self.interest] def repay(self,amount):#还款  self.handel_money('repay',amount) def withdraw(self,amount): #取现  self.handel_money('withdraw',amount) def transfer(self,amount): #转账  self.handel_money('transfer',amount) def consume(self,amount): #消费  self.handel_money('consume',amount) def saves(self,amount):  self.handel_money('saving',amount) def transaction(self,a,amount):  dic={   '1':self.repay,   '2':self.withdraw,   '3':self.transfer,   '4':self.consume,   '5':self.saves  }  print("debug: a:",type(a),"amount:",type(amount))   print(a)  print(dic[a])  print(dic["5"])  dic[a](amount)  print("end debug")  def handel_money(self,transaction,amount): #交易类型,  amount=int(amount)  interest=amount*settings.TRANSACTION[transaction]['interest'] #手续费计算  if settings.TRANSACTION[transaction]['action']=='plus':    if amount<=self.remaining_debt:    self.remaining_debt-=amount    self.balance+=amount   else:    self.balance+=self.remaining_debt    self.remaining_debt=0    self.saving+=amount-self.remaining_debt  else:    if self.saving<amount:    self.saving=0    a=amount-self.saving    self.balance-=a+interest-self.saving    # self.debt+=amount+interest    self.remaining_debt+=a+interest  a='time:%s id:%s transaction: %s amount:%s interest %s /n'%(self.now_time,self.id,transaction,amount,interest)  print(a)  mulu=os.path.join(settings.ALL_USERS,self.id)  path_name_liushui=os.path.join(mulu,str(self.id)+'name_liushui',str(self.now_data))   with open(path_name_liushui,'a')as f:   #记录流水信息   f.write(a)   s=[self.balance,self.debt,self.remaining_debt,self.interest,self.saving,]  #更新基本信息  path_name_base=os.path.join(mulu,str(self.id)+'name_base')  pickle.dump(s,open(path_name_base,'wb'))

 3.3服务器端:

#!/usr/bin/env python# -*- coding: utf-8 -*- import sys,osimport hashlibimport pickleimport timeimport socketserversys.path.append(os.path.dirname(os.path.dirname(__file__)))from config import settingsfrom lib import modulesfrom lib.modules import * class Myserver(socketserver.BaseRequestHandler):  def md5(self,pwd):  '''  对密码进行加密  :param pwd: 密码  :return:  '''  hash=hashlib.md5(bytes('xx7',encoding='utf-8'))  hash.update(bytes(pwd,encoding='utf-8'))  return hash.hexdigest()   def login(self,usrname,pwd,x):  '''  登陆  :param usrname: 用户名  :param pwd: 密码  :return:是否登陆成功  '''  conn=self.request  if x=='1':   path_name_pwd=os.path.join(settings.ADMIN,usrname)  else:   mulu=os.path.join(settings.ALL_USERS,usrname)   path_name_pwd=os.path.join(mulu,usrname+'name_pwd')  s=pickle.load(open(path_name_pwd,'rb'))  if usrname in s:    if s[usrname]==self.md5(pwd):  #和加密后的密码进行比较    return True    else:    return False  else:   return False   def regist(self,usrname,pwd,x):  '''  注册  :param usrname: 用户名  :param pwd: 密码  :return:是否注册成功  '''   conn=self.request  if x=='1':   mulu=os.path.join(settings.ADMIN,usrname)  else:   mulu=os.path.join(settings.ALL_USERS,usrname)    if os.path.exists(mulu):    return False  else:   os.mkdir(mulu)   s={}   s[usrname]=self.md5(pwd)   path_name_pwd=os.path.join(mulu,usrname+'name_pwd')   pickle.dump(s,open(path_name_pwd,'wb'))   path_name_base=os.path.join(mulu,usrname+'name_base')   pickle.dump([15000,{},0,0,0],open(path_name_base,'wb'))   path_name_liushui=os.path.join(mulu,usrname+'name_liushui')   os.mkdir(path_name_liushui)   return True  def user_identity_authentication(self,usrname,pwd,ret,x):  '''  判断注册和登陆,并展示用户的详细目录信息,支持cd和ls命令  :return:  '''  conn=self.request  if ret=='1':   r=self.login(usrname,pwd,x)   if r:    conn.sendall(bytes('y',encoding='utf-8'))   else:    conn.sendall(bytes('n',encoding='utf-8'))  elif ret=='2':   # print(usrname,pwd)   if x=='1':    r=self.regist(usrname,pwd,x)   else: #用户注册    s=[0,1]    pickle.dump(s,open(settings.A,'wb'))    while True:     ret=pickle.load(open(settings.A,'rb'))     if ret[0]==0:      time.sleep(30)      continue     elif ret[0]==1 or ret[0]==2:      break #默认值已更改,银行管理员已操作     if ret[0]==1: #如果管理员同意     r=self.regist(usrname,pwd,x)    else:     r=0    s=[0,0]    pickle.dump(s,open(settings.A,'wb'))   if r:    conn.sendall(bytes('y',encoding='utf-8'))   else:    conn.sendall(bytes('n',encoding='utf-8')) def interactive(self,usrname): #进行交互  conn=self.request  while True:   c=conn.recv(1024) #接收用户交互选项   r=str(c,encoding='utf-8')   mulu=os.path.join(settings.ALL_USERS,usrname)   path_name_base=os.path.join(mulu,usrname+'name_base')   s=pickle.load(open(path_name_base,'rb'))    #打印账户信息   obj=modules.Atm(s[0],s[1],s[2],s[3],s[4],usrname) #Atm对象   a=obj.account_info() #接收账户信息   conn.sendall(bytes(a,encoding='utf-8'))    b=obj.ret_account_info()      if r== '4':    buy_obj=modules.buy(b[2],0,{})    amount=buy_obj.main()   elif r=='q':    break   else:    s=conn.recv(1024)    amount=str(s,encoding='utf-8')    obj.transaction(r,amount)    pass   def handle(self):  conn=self.request  x=conn.recv(1024)  x=str(x,encoding='utf-8')  conn.sendall(bytes('收到用户类别',encoding='utf-8'))  while True:   if x=='1' or x=='2':    b=conn.recv(1024)    ret=str(b,encoding='utf-8')    conn.sendall(bytes('b ok',encoding='utf-8'))    c=conn.recv(1024)    r=str(c,encoding='utf-8')    usrname,pwd=r.split(',')    print(usrname,pwd)    self.user_identity_authentication(usrname,pwd,ret,x) #登陆或注册验证    if x=='2':#普通用户身份验证成功后     self.interactive(usrname)      pass     break   elif x=='q':    break if __name__=='__main__': sever=socketserver.ThreadingTCPServer(('127.0.0.1',9999),Myserver) sever.serve_forever()

3.4 用户端

#!/usr/bin/env python# -*- coding: utf-8 -*-'''本程序作为用户或银行管理员的入口,其中c=1代表银行管理员,c=2代表普通用户'''import pickleimport sysimport timeimport osimport socketsys.path.append(os.path.dirname(os.path.dirname(__file__)))from config import settingsfrom lib import *from lib.modules import * def login(usrname,pwd): ''' 登陆 :param usrname:用户名 :param pwd:密码 :return:是否登陆成功 ''' obj.sendall(bytes(usrname+','+pwd,encoding='utf-8')) ret=obj.recv(1024) r=str(ret,encoding='utf-8') if r=='y':  return 1 else:  return 0 def regist(usrname,pwd,x): ''' 注册 :param usrname:用户名 :param pwd:密码 :return:是否注册成功 ''' obj.sendall(bytes(usrname+','+pwd,encoding='utf-8'))  ret=obj.recv(1024) r=str(ret,encoding='utf-8') if r=='y':  return 1 else:  return 0def user_identity_authentication(usrname,pwd,x): ''' 选择登陆或注册,展示用户的详细目录信息,支持cd和ls命令 :return: ''' a=input('请选择1.登陆 2.注册') obj.sendall(bytes(a,encoding='utf-8')) obj.recv(1024) if a=='1':  ret=login(usrname,pwd)  if ret:   print('登陆成功')   return 1  else:   print('用户名或密码错误')   return 0 elif a=='2':  ret=regist(usrname,pwd,x)  if ret:   print('注册成功')   return 1  else:   print('用户名已存在或银行管理员拒绝')   return 0def main(x): usrname=input('请输入用户名') pwd=input('请输入密码') if user_identity_authentication(usrname,pwd,x): #如果验证身份成功  if x=='1': #处理用户注册信息    while True:    s=pickle.load(open(settings.A,'rb'))    if s[1]==0:     time.sleep(30)     continue    elif s[1]==1:     while True:      a=input('用户请求注册,输入1同意,2拒绝')      if a=='1':       s=[1,0]       pickle.dump(s,open(settings.A,'wb'))       break      elif a=='2':       s=[2,0]       pickle.dump(s,open(settings.A,'wb'))       break      else:       print('输入有误')     break  else: #普通用户登陆后   interactive() #进行交互  def interactive(): while True:  a=input('请选择 1.还款 2.取现 3.转账 4.消费 5.存钱 q退出')  obj.sendall(bytes(a,encoding='utf-8'))  r=obj.recv(1024) #接收账户信息  ret=str(r,encoding='utf-8')  print(ret)  if a !='4'and a !='q':   b=input('请输入金额')   obj.sendall(bytes(b,encoding='utf-8'))  elif a=='q':   break   obj=socket.socket() #创建客户端socket对象obj.connect(('127.0.0.1',9999))while True: x=input('请选择1.银行管理员 2.用户 q、退出') obj.sendall(bytes(x,encoding='utf-8')) obj.recv(1024) #确认收到用户类别 if x=='1' or x=='2':  main(x)  break elif x=='q':  break else:  print('输入有误请重新输入') obj.close()

 3.5定时任务

#!/usr/bin/env python# -*- coding:utf-8 -*-import os,sysimport json,pickleimport timesys.path.append(os.path.dirname(os.path.dirname(__file__)))from config import settings   def main(): card_list = os.listdir(settings.ALL_USERS) for card in card_list:  basic_info = pickle.load(open(os.path.join(settings.ALL_USERS, card, card+'name_base')))  struct_time = time.localtime()   # 循环账单列表,为每月的欠款计息。并写入到当月账单中  for item in basic_info['debt']:   interest = item['total_debt'] * 0.0005   if basic_info[4] >= interest:    basic_info[4] -= interest   else:    temp = interest - basic_info[4]    basic_info[4]=0    basic_info[0] -= temp    pickle.dump(      basic_info,      open(os.path.join(settings.ALL_USERS, card, card+'name_base'),'w')    )   # 如果当前等于10号(9号之前)  # 当前余额为负值,则将值添加到账单列表中,开始计息,同时,本月可用额度恢复。  date = time.strftime("%Y-%m-%d")  if struct_time.tm_mday == 11 and basic_info[2]>0:   dic = {'date': date,     "total_debt": basic_info[2],     "balance_debt": basic_info[2],     }   basic_info[1].append(dic)   # 恢复可用额度   basic_info[0] = 15000  pickle.dump(   basic_info,   open(os.path.join(settings.ALL_USERS, card, card+'name_base'),'w')    )  def run(): main()  

以上就是用python开发网上商城信用卡系统,需要的同学可以参考下。

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