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！