使用Python3 编写简单信用卡管理程序
1、程序执行代码:
#AuthorbyAndy #_*_coding:utf-8_*_ importos,sys,time Base_dir=os.path.dirname(os.path.dirname(os.path.abspath(__file__))) sys.path.append(Base_dir) str="欢迎使用银行信用卡自助服务系统!\n" foriinstr: sys.stdout.write(i) sys.stdout.flush() time.sleep(0.3) whileTrue: print("1、管理人员入口。") time.sleep(0.3) print("2、用户登录入口。") print("3、退出请按q!") choice=input(":") fromcoreimportmain Exit_flag=True whileExit_flag: user_choice=main.menu(choice) ifuser_choice=='1': main.get_user_credit() elifuser_choice=='2': main.repayment() elifuser_choice=='3': main.enchashment() elifuser_choice=='4': main.change_pwd() elifuser_choice=='5': main.transfer() elifuser_choice=='6': main.billing_query() elifuser_choice=='7': print("该功能正在建设中,更多精彩,敬请期待!") elifuser_choice=='a': main.change_user_credit() elifuser_choice=='b': main.add_user() elifuser_choice=='c': main.del_user() elifuser_choice=='d': main.change_pwd() elifuser_choice=='q'oruser_choice=='Q': print("欢迎再次使用,再见!") Exit_flag=False
2、程序功能函数:
#AuthorbyAndy#_*_coding:utf-8_* importjson,sys,os,time,shutil Base_dir=os.path.dirname(os.path.dirname(os.path.abspath(__file__))) sys.path.append(Base_dir) #定义认证装饰器 defauth(func): defwrapper(*args,**kwargs): #print("请输入卡号和密码进行验证!") f=open(Base_dir+'\data\\user_db.txt','r') Log_file=open(Base_dir+'\logs\log.txt','a+',encoding='utf-8') Bill_log_file=open(Base_dir+'\logs\\bill_log.txt','a+',encoding='utf-8') func_name=func.__name__ Time_formate='%Y-%m-%d%X' start_time=time.strftime(Time_formate,time.localtime()) user_data=json.load(f) count=0 whilecount<3: globaluser_id globaluser_pwd user_id=input('请输入您的卡号:') user_pwd=input('请输入您的密码:') ifuser_idinuser_data: ifuser_pwd==user_data[user_id]['Password']: Log_file.write(start_time+'卡号%s认证成功!\n'%user_id) Log_file.flush() time.sleep(1) Log_file.close keywords=func(*args,**kwargs) iffunc_name=='repayment'orfunc_name=='transfer'orfunc_name=='enchashment': Bill_log_file.write(start_time+'卡号'+user_id+'发起'+func_name+'业务,金额为:%s\n'%keywords) Bill_log_file.flush() time.sleep(1) Bill_log_file.close returnkeywords else: returnkeywords else: print('卡号或密码错误!请重新输入!') Log_file.write(start_time+'卡号%s认证失败!\n'%user_id) Log_file.flush() time.sleep(1) Log_file.close count+=1 else: print("卡号不存在,请确认!") ifcount==3: print("对不起,您已输错3三次,卡号已锁定!") Log_file.write(start_time+'卡号%s因连续三次验证失败而被锁定!\n'%user_id) time.sleep(1) Log_file.close returnwrapper #定义菜单函数,根据不同用户显示不通菜单。 defmenu(choice): ifchoice=='2': print("请选择服务类别:\n" "1、查询信用额度。\n" "2、信用卡还款。\n" "3、信用卡提现。\n" "4、修改口令。\n" "5、信用卡转账。\n" "6、信用卡账单查询。\n" "7、轻松购物。\n" "8、退出请按q!\n") service_items=input('-->') elifchoice=='1': print("请选择服务类别:\n" "a、修改用户信用额度。\n" "b、新增信用卡用户。\n" "c、删除信用卡用户。\n" "d、修改用户口令。\n" "e、退出请按q!\n") service_items=input('-->') else: print("感谢使用,祝生活愉快!") exit() returnservice_items #定义备份用户数据文件函数 defback_up_file(): Time_formate='%Y-%m-%d' Sys_time=time.strftime(Time_formate,time.localtime()) shutil.copy(Base_dir+"\data\\user_db.txt",Base_dir+"\data\\user_db--"+Sys_time+".bak.txt") #定义获取用户数据信息函数 defget_user_data(): withopen(Base_dir+"\data\\user_db.txt",'r+',encoding='utf-8')asf: user_data=json.load(f) returnuser_data #定义用户数据变量 user_data=get_user_data() #定义查询信用额度函数 @auth defget_user_credit(): user_credit=user_data[user_id]['Credit'] print("您目前的信用额度为:%s元\n" %(user_credit)) time.sleep(2) returnuser_credit #定义信用卡还款函数 @auth defrepayment(): user_data=get_user_data() user_credit=int(user_data[user_id]['Credit']) user_balance=int(user_data[user_id]['Balance']) user_bill=user_credit-user_balance print("您目前需要还款金额为:%s元.\n"%user_bill) Exit_flag=True whileExit_flag: repayment_value=input("请输入还款金额:") ifrepayment_value.isdigit(): repayment_value=int(repayment_value) user_data[user_id]['Balance']=user_data[user_id]['Balance']+repayment_value f=open(Base_dir+"\data\\user_db.txt",'r+',encoding='utf-8') json.dump(user_data,f) f.close() print("恭喜,还款成功!") print("您目前需要还款金额为:%s元.\n"%(user_data[user_id]['Credit']-user_data[user_id]['Balance'])) time.sleep(1) Exit_flag=False returnrepayment_value else: print("请输入正确的金额!") #定义信用卡提现函数 @auth defenchashment(): user_credit=user_data[user_id]['Credit'] print("你可用的取现额度为:%s"%user_credit) Exit_flag=True whileExit_flag: enchashment_value=input("请输入您要取现的金额:") ifenchashment_value.isdigit(): enchashment_value=int(enchashment_value) ifenchashment_value%100==0: ifenchashment_value<=user_credit: user_data[user_id]['Balance']=user_credit-enchashment_value f=open(Base_dir+"\data\\user_db.txt",'r+',encoding='utf-8') json.dump(user_data,f) f.close() print("取现成功,您目前的可用额度为:%s"%user_data[user_id]['Balance']) time.sleep(1) Exit_flag=False returnenchashment_value else: print("您的取现额度必须小于或等于您的信用额度!") else: print("取现金额必须为100的整数倍!") else: print("输入有误,取现金额必须为数字,且为100的整数倍") @auth #定义信用卡转账函数 deftransfer(): user_balance=user_data[user_id]['Balance'] print("您目前的可用额度为:%s"%user_balance) Exit_flag=True whileExit_flag: transfer_user_id=input("请输入对方帐号:") transfer_value=input("请输入转账金额:") iftransfer_user_idinuser_data.keys(): whileExit_flag: iftransfer_value.isdigit(): whileExit_flag: transfer_value=int(transfer_value) user_passwd=input("请输入口令以验证身份:") ifuser_passwd==user_data[user_id]['Password']: user_balance=user_balance-transfer_value user_data[transfer_user_id]['Balance']=int(user_data[transfer_user_id]['Balance'])+transfer_value f=open(Base_dir+"\data\\user_db.txt",'r+',encoding='utf-8') json.dump(user_data,f) f.close() print("转账成功,您目前的可用额度为:%s"%user_balance) time.sleep(1) Exit_flag=False returntransfer_value else: print("密码错误,请重新输入!") else: print("转账金额,必须为数字,请确认!") else: print("帐号不存在,请确认!") #@auth #定义信用卡账单查询函数 @auth defbilling_query(): print("我们目前仅提供查询所有账单功能!") print("您的账单为:\n") Bill_log_file=open(Base_dir+'\logs\\bill_log.txt','r',encoding='utf-8') forlinesinBill_log_file: ifuser_idinlines: print(lines.strip()) print() time.sleep(1) #定义修改信用卡额度函数 defchange_user_credit(): print("您正在修改用户的信用额度!") Exit_flag=True whileExit_flag: target_user_id=input("请输入您要修改的用户卡号:\n") iftarget_user_idinuser_data.keys(): whileExit_flag: new_credit=input("请输入新的信用额度:\n") ifnew_credit.isdigit(): new_credit=int(new_credit) user_data[target_user_id]['Credit']=new_credit print("卡号%s的新信用额度为:%s"%(target_user_id,new_credit)) choice=input("确认请输入1或者按任意键取消:\n") ifchoice=='1': f=open(Base_dir+"\data\\user_db.txt",'r+',encoding='utf-8') json.dump(user_data,f) f.close() print("信用额度修改成功,新额度已生效!") print("卡号%s的新信用额度为:%s"%(target_user_id,user_data[target_user_id]['Credit'])) time.sleep(1) Exit_flag=False else: print("用户的信用额度未发生改变!") else: print("信用额度必须为数字!请确认!") else: print("卡号不存在,请确认!") #定义修改口令函数 @auth defchange_pwd(): print("注意:正在修改用户密码!") Exit_flag=True whileExit_flag: old_pwd=input("请输入当前密码:") ifold_pwd==get_user_data()[user_id]["Password"]: new_pwd=input("请输入新密码:") new_ack=input("请再次输入新密码:") ifnew_pwd==new_ack: user_data=get_user_data() user_data[user_id]["Password"]=new_pwd f=open(Base_dir+"\data\\user_db.txt",'r+',encoding='utf-8') json.dump(user_data,f) f.close() print("恭喜,密码修改成功!") time.sleep(1) Exit_flag=False else: print("两次密码不一致,请确认!") else: print("您输入的密码不正确,请在确认!") #定义新增信用卡函数 defadd_user(): Exit_flag=True whileExit_flag: user_id=input("user_id:") Balance=input("Balance:") Credit=input("Credit:") ifBalance.isdigit()andCredit.isdigit(): Balance=int(Balance) Credit=int(Credit) else: print("余额和信用额度必须是数字!") continue Name=input("Name:") Password=input("Password:") print("新增信用卡用户信息为:\n" "User_id:%s\n" "Balance:%s\n" "Credit:%s\n" "Name:%s\n" "Password:%s\n" %(user_id,Balance,Credit,Name,Password)) choice=input("提交请按1,取消请按2,退出请按q:") ifchoice=='1': back_up_file() user_data=get_user_data() user_data[user_id]={"Balance":Balance,"Credit":Credit,"Name":Name,"Password":Password} f=open(Base_dir+"\data\\user_db.txt",'w+',encoding='utf-8') json.dump(user_data,f) f.close() print("新增用户成功!") time.sleep(1) Exit_flag=False elifchoice=='2': continue elifchoice=='q'orchoice=='Q': time.sleep(1) Exit_flag=False else: print('InvaliableOptions!') #定义删除信用卡函数 defdel_user(): Exit_flag=True whileExit_flag: user_id=input("请输入要删除的信用卡的卡号:") ifuser_id=='q'oruser_id=='Q': print('欢迎再次使用,再见!') time.sleep(1) Exit_flag=False else: user_data=get_user_data() print("新增信用卡用户信息为:\n" "User_id:%s\n" "Balance:%s\n" "Credit:%s\n" "Name:%s\n" %(user_id,user_data[user_id]['Balance'],user_data[user_id]['Credit'],user_data[user_id]['Name'])) choice=input("提交请按1,取消请按2,退出请按q:") ifchoice=='1': back_up_file() user_data.pop(user_id) f=open(Base_dir+"\data\\user_db.txt",'w+',encoding='utf-8') json.dump(user_data,f) f.close() print("删除用户成功!") time.sleep(1) Exit_flag=False elifchoice=='2': continue elifchoice=='q'orchoice=='Q': print('欢迎再次使用,再见!') time.sleep(1) Exit_flag=False else: print('InvaliableOptions!')
3、用户数据文件:
{"003":{"Name":"wangwu","Password":"qazwsx","Credit":16000,"Balance":8000},"004":{"Name":"zhaoliu","Password":"edcrfv","Credit":18000,"Balance":6000},"002":{"Name":"lisi","Password":"123456","Credit":14000,"Balance":10000},"009":{"Password":"qwerty","Name":"hanmeimei","Credit":15000,"Balance":15000},"005":{"Name":"fengqi","Password":"1234qwer","Credit":15000,"Balance":10700},"010":{"Name":"lilei","Password":"qaswed","Credit":50000,"Balance":50000},"008":{"Name":"zhengshi","Password":"123456","Credit":12345,"Balance":12345},"006":{"Name":"zhouba","Password":"123456","Credit":20000,"Balance":8300},"001":{"Name":"zhangsan","Password":"abcd1234","Credit":12000,"Balance":12000},"007":{"Name":"wujiu","Password":"123456","Credit":20000,"Balance":11243}}
4、相关日志内容:
登录日志:
2016-12-20 22:12:18卡号005认证成功!
2016-12-20 22:14:20卡号005认证成功!
2016-12-20 22:17:26卡号006认证成功!
2016-12-20 22:18:06卡号005认证成功!
2016-12-20 22:18:06卡号006认证成功!
2016-12-20 22:21:10卡号005认证失败!
2016-12-20 22:21:10卡号006认证成功!
2016-12-20 22:23:17卡号006认证成功!
2016-12-20 22:25:33卡号006认证成功!
2016-12-20 22:26:14卡号006认证成功!
2016-12-20 22:32:15卡号006认证成功!
2016-12-20 22:44:57卡号005认证成功!
2016-12-20 22:45:50卡号006认证成功!
2016-12-20 22:47:10卡号006认证成功!
2016-12-20 22:48:27卡号006认证成功!
2016-12-20 22:49:30卡号006认证成功!
2016-12-20 22:52:13卡号006认证成功!
2016-12-20 22:53:44卡号006认证成功!
交易日志:
2016-12-20 21:25:35卡号006发起repayment业务,金额为:100
2016-12-20 21:27:01卡号005发起repayment业务,金额为:100
2016-12-20 22:14:20卡号005发起repayment业务,金额为:100
2016-12-20 22:17:26卡号006发起transfer业务,金额为:300
以上所述是小编给大家介绍的使用Python3编写简单信用卡管理程序,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毛票票网站的支持!