一、环境及程序功能说明
python 2.7.12模拟与银行ATM功能,主要功能如下:
1,登录查询余额
2,转账功能
3,提现功能
4,流水查询
5,密码修改
6,还款功能
7,退出(切换账号)
采用pickle存储账号密码相关信息,以账号名为日志文件名存储该账号的流水日志~
为了实现测试,先写一个提供测试文件的小脚本,代码如下:
#coding:utf-8import pickleimport timeimport osIOSTIME = '%Y-%m-%d %X'Now = time.strftime(IOSTIME,time.localtime())Counts = {'9168':['1234','0',15000,[Now]],'9198':['4567','0',10000,[Now]],'9999':['6789','1',12000,[Now]]}bank_count = open("banks_counts.pkl",'w')pickle.dump(Counts,bank_count)os.chdir(".")for log in Counts.keys(): os.popen("rm -rf %s" %log)print("测试数据已经生成:\n:%s" %Counts) 二、ATM系统实现
#!/usr/bin/env python#coding=utf8import pickleimport sysimport timeimport osIOSTIME = '%Y-%m-%d %X'Now = time.strftime(IOSTIME,time.localtime())reload(sys)sys.setdefaultencoding('utf-8')##现在时间def NOW(): global Now Now = time.strftime(IOSTIME,time.localtime()) return Now##读入数据with open('banks_counts.pkl') as bank_infos: UserInfos = pickle.load(bank_infos) print UserInfos##完成写入功能def Write_DB(): with open('banks_counts.pkl','w') as New_bank_infos: pickle.dump(UserInfos,New_bank_infos)#for userinfo in UserInfos.keys():# print UserInfos[userinfo] ##查询金额def LookHow(HM): print "现在时间是: %s,银行余额: %s RMB!" %(NOW(),HM)#提现功能 def TakeCrash(HOW,WHO): ShouXuFei = HOW * 0.01 #手续费为1/100 if (HOW + ShouXuFei) > WHO: print "余额不足提取!" else: WHO = WHO - HOW- ShouXuFei print "您要提取的金额为:%s,手续费: %s,余额为:%s RMB!" %(HOW,ShouXuFei,WHO) with open(UserCard,'a+') as f: f.write("%s:%s提款%s\n" %(NOW(),UserCard,HOW)) UserInfos[UserCard][2] = WHO####转账功能def ZhuangZ(From,TO,How): print From,TO if How > From: print "%s 账号余额不足!" %How else: From = From - How TO = TO + How print "转出金额: %s RMB,余额为: %s RMB" %(How,From) UserInfos[UserCard][2] = From UserInfos[TO_Card][2] = TO with open(UserCard,"a+") as f1: f1.write("%s:%s扣款%s,输出到:%s!\n" %(NOW(),UserCard,How,TO_Card)) with open(TO_Card,"a+") as f2: f2.write("%s:%s收到来自%s的%s款!\n" %(NOW(),TO_Card,UserCard,How))###还款功能def AddMoney(HOW,WHO): if HOW > 0: print("确定还款:%s" %HOW) UserInfos[WHO][2] = UserInfos[WHO][2] + HOW with open(WHO,"a+") as f: f.write("%s:还款%s\n" %(NOW(),HOW))##流水查询def Logs(WHO): if os.path.isfile(os.path.join(os.getcwd(),WHO)): with open(WHO,'r') as f: for line in f.readlines(): else: print("该账号还没有产生交易流水!")##最后一次访问时间def LastAccess(WHO): UserInfos[WHO][3] = NOW()# Write_DB()##密码修改def ChgPwd(WHO,NewPass): UserInfos[WHO][0] = NewPass print("密码修改成功!")Contex = ["查询余额","转账","提现","流水","还款","修改密码","退出"]ErrorCount = 0while ErrorCount < 3 : for userinfo in UserInfos.keys(): UserCard = raw_input("[输入quit|exit退出系统]请输入您的银行卡:").strip()# if UserCard == 'quit':sys.exit("您选择退出!") if UserCard == '':continue elif UserCard == 'quit' or UserCard == 'exit': sys.exit("您选择退出!") elif UserCard not in UserInfos.keys(): print("您输入的银行卡不存在!") continue# else:# print("您输入的有误!") UserPwd = raw_input("[输入quit|exit退出系统]请输入您的密码:").strip() if UserPwd == 'quit' or UserPwd == "exit": sys.exit("您选择退出!") try: if UserInfos[UserCard][1] != '0': print "%s 账号被锁定!" % UserCard ErrorCount +=1 continue except KeyError: print "%s 账号不存在!" %UserCard ErrorCount +=1 continue if len(UserPwd) == 0 or UserPwd != UserInfos[UserCard][0]: print "密码错误!" ErrorCount +=1 continue else: print "%s 登录成功!您最后一次访问在: %s" %(UserCard,UserInfos[UserCard][3]) LastAccess(UserCard) #登录成功,写入访问时间 while True: print(("请选择你需要的服务:").center(90,"+")) print for i in range(len(Contex)): print i,Contex[i].decode("utf-8"),'\t', print print("+" * 80 + '\n') choice = raw_input("[按6或输入quit退出系统]请选择您的业务编号:") if len(choice) == 0:continue elif choice == 'quit' or int(choice) == 6 : Write_DB() print("您选择退出系统!") break elif int(choice) == 0: LookHow(UserInfos[UserCard][2]) elif int(choice) == 1: TO_Card = raw_input("请输入对方银行卡:").strip() if len(TO_Card) == 0 or TO_Card == UserInfos[UserCard]: print "账号错误!" continue HowZ = raw_input("输入转账金额:").strip() if len(HowZ) == 0: print "转账金额不能为0!" try: UserInfos[TO_Card] except KeyError: print "对方账号: %s 不存在!" % TO_Card continue else: UserInfos[TO_Card][2] = int(UserInfos[TO_Card][2]) ZhuangZ(UserInfos[UserCard][2],UserInfos[TO_Card][2],int(HowZ)) elif int(choice) == 2: HowTake = raw_input("请选择提取金额:") HowTake = int(HowTake) TakeCrash(HowTake,UserInfos[UserCard][2]) Write_DB() elif int(choice) == 4:# print UserCard HowAdd = int(raw_input("请输入您要还款的金额:")) AddMoney(HowAdd,UserCard) Write_DB() elif int(choice) == 3: Logs(UserCard) elif int(choice) == 5: NewPass = raw_input("请输入新的密码:") NewPass2 = raw_input("请再输入一次新密码:") if NewPass == NewPass2: ChgPwd(UserCard,NewPass) Write_DB() else: sys.exit("两次输入的密码不一致!退出密码修改!")else: print("你的账号已锁,请到柜台解锁!") UserInfos[UserCard][1] = '1' UserInfos[UserCard][3] = NOW() Write_DB() 三、功能测试如
$python creat_bank.py
$ python looks_bank.py
四、所有文件如下
$ls -alh
写着用来练习,如有错误之处欢迎指正,交流!