最近一直在做一个有关信用卡系统的项目,所有很少出来给大家打招呼了,今天也该告一段了,本项目是基于python编程语言做的,此信用卡支持购物,转账和存取钱,下面小编把需求及实现思路大概分享一下,仅供参考,如有bug欢迎各位大侠提出,共同学习进步,谢谢!
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
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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
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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
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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:
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#!/usr/bin/env python # -*- coding: utf-8 -*- import sys,os import hashlib import pickle import time import socketserver sys.path.append(os.path.dirname(os.path.dirname(__file__))) from config import settings from lib import modules from 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
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#!/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 pickle import sys import time import os import socket sys.path.append(os.path.dirname(os.path.dirname(__file__))) from config import settings from 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 0 def 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 0 def 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
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#!/usr/bin/env python # -*- coding:utf-8 -*- import os,sys import json,pickle import time sys.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() |
以上所述是小编给大家介绍的Python实现信用卡系统(支持购物、转账、存取钱)的全部内容,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!