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:
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#coding:utf-8
import
pickle
import
time
import
os
IOSTIME
=
'%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
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#!/usr/bin/env python
#coding=utf8
import
pickle
import
sys
import
time
import
os
IOSTIME
=
'%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
=
0
while
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()
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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!
本文转自 dyc2005 51CTO博客，原文链接：http://blog.51cto.com/dyc2005/1944150，如需转载请自行联系原作者
