Python学习day5作业-ATM和购物商城、计算器

左手的ㄟ右手 2022-07-11 13:11 182阅读 0赞

# Python学习day5作业-ATM和购物商城、计算器 #

@(学习)\[python\]

*  Python学习day5作业-ATM和购物商城计算器
    
     *  ATM和购物商城
        
         *  程序说明
         *  基本流程图
         *  程序测试帐号
         *  程序结构
         *  程序测试
     *  计算器
        
         *  程序说明
         *  基本流程图
         *  程序结构
         *  程序测试

## ATM和购物商城 ##

作业需求

ATM：

> 1.  指定最大透支额度
> 2.  可取款
> 3.  定期还款（每月指定日期还款，如15号）
> 4.  可存款
> 5.  定期出账单
> 6.  支持多用户登陆，用户间转帐
> 7.  支持多用户
> 8.  管理员可添加账户、指定用户额度、冻结用户等

购物车：

> 1.  商品信息- 数量、单价、名称
> 2.  用户信息- 帐号、密码、余额
> 3.  用户可充值
> 4.  购物历史信息
> 5.  允许用户多次购买，每次可购买多件
> 6.  余额不足时进行提醒
> 7.  用户退出时 ，输出当次购物信息
> 8.  用户下次登陆时可查看购物历史
> 9.  商品列表分级显示

### 1. 程序说明 ###

购物商城实现功能如下：  
\- \[x\] 博客  
\- \[x\] 多用户登录  
\- \[x\] 商品按二级菜单显示  
\- \[x\] 充值功能  
\- \[x\] 多次购买，每次购买多件  
\- \[x\] 余额不足提示充值  
\- \[x\] 可查看购物历史

ATM实现功能如下：  
\- \[x\] 指定最大透支额度  
\- \[x\] 可取款  
\- \[ \] 定期还款（每月指定日期还款，如15号）  
\- \[x\] 可存款  
\- \[x\] 定期出账单  
\- \[x\] 支持多用户登陆，用户间转帐  
\- \[x\] 支持多用户  
\- \[x\] 管理员可添加账户、指定用户额度、冻结用户等

[ygqygq2的博客地址][ygqygq2]  
作业地址：[https://git.oschina.net/ygqygq2/python\_homework/tree/master/day5作业][https_git.oschina.net_ygqygq2_python_homework_tree_master_day5]

### 2. 基本流程图 ###

![这里写图片描述][SouthEast]

### 3. 程序测试帐号 ###

用户/密码：  
ATM普通用户：1000/abc、1001/1001  
ATM管理用户：admin/abc  
购物商城：test/test

### 4. 程序结构: ###

.
    ├── Atm  # ATM主程目录 
    │   ├── __init__.py
    │   ├── api  # ATM程序API目录
    │   │   ├── __init__.py
    │   │   ├── __pycache__
    │   │   │   ├── __init__.cpython-35.pyc
    │   │   │   └── pay1.cpython-35.pyc
    │   │   └── pay.py # ATM支付api
    │   ├── bin  # ATM执行文件目录
    │   │   ├── __init__.py
    │   │   ├── atm.py  # ATM执行程序，普通用户登录入口
    │   │   └── manager.py  # ATM管理员登录入口
    │   ├── conf  # ATM配置目录
    │   │   ├── __init__.py
    │   │   ├── __pycache__
    │   │   │   ├── __init__.cpython-35.pyc
    │   │   │   └── settings.cpython-35.pyc
    │   │   └── settings.py  # ATM配置文件
    │   ├── core  # ATM主要逻辑程序目录
    │   │   ├── __init__.py
    │   │   ├── __pycache__
    │   │   │   ├── __init__.cpython-35.pyc
    │   │   │   ├── accounts.cpython-35.pyc
    │   │   │   ├── auth.cpython-35.pyc
    │   │   │   ├── bill_date.cpython-35.pyc
    │   │   │   ├── db_handler.cpython-35.pyc
    │   │   │   ├── logger.cpython-35.pyc
    │   │   │   ├── main.cpython-35.pyc
    │   │   │   └── transaction.cpython-35.pyc
    │   │   ├── accounts.py  # 用于从文件里加载和存储账户数据
    │   │   ├── auth.py  # 用于帐户认证和帐户操作
    │   │   ├── bill_date.py  # 根据年-月，生成帐单起止时间模块
    │   │   ├── db_handler.py  # 数据库连接引擎
    │   │   ├── logger.py  # 日志记录模块
    │   │   ├── main.py  # 主逻辑程序
    │   │   └── transaction.py  # 记账\还钱\取钱等所有的与账户金额相关的操作模块
    │   ├── db  # 用户数据存储目录
    │   │   ├── __init__.py
    │   │   ├── account_sample.py  # 生成一个初始的账户数据 ,把这个数据存成一个以这个账户id为文件名的文件,放在accounts目录就行了,程序自己去会这里找
    │   │   └── accounts  # 存各个用户的账户数据，一个用户一个文件
    │   │       ├── 1000.json  # 一个普通用户账户文件
    │   │       └── admin.json  # 一个管理员用户示例文件
    │   ├── docs  # 程序说明文档目录
    │   │   └── __init__.py
    │   └── log  # 日志根目录
    │       ├── __init__.py
    │       ├── access.log  # 用户访问和操作的相关日志
    │       ├── accounts  # 存各个用户的帐单数据，一个用户一个文件
    │       │   └── 1000.bills  # 一个普通用户的帐单文件
    │       └── transactions.log  # 所有的交易还款等日志
    ├── README.md   # readme文件
    └── Shopping_mall  # 购物商城程序目录
        ├── bin  # 购物商城执行文件目录
        │   ├── __init__.py
        │   └── shopping_mall.py  # 购物商城入口程序
        ├── conf  # 购物商城配置目录
        │   ├── __init__.py
        │   ├── __pycache__
        │   │   ├── __init__.cpython-35.pyc
        │   │   ├── goods.cpython-35.pyc
        │   │   └── settings.cpython-35.pyc
        │   ├── goods.py  # 购物商城商品价格列表
        │   └── settings.py  # 购物商城配置文件
        ├── core  # 购物商城主要逻辑程序目录
        │   ├── __init__.py
        │   ├── __pycache__
        │   │   ├── __init__.cpython-35.pyc
        │   │   ├── accounts.cpython-35.pyc
        │   │   ├── auth.cpython-35.pyc
        │   │   ├── db_handler.cpython-35.pyc
        │   │   ├── logger.cpython-35.pyc
        │   │   ├── main.cpython-35.pyc
        │   │   └── shopping.cpython-35.pyc
        │   ├── accounts.py  # 用于从文件里加载和存储账户数据
        │   ├── auth.py  # 用于帐户认证和帐户操作
        │   ├── db_handler.py  # 数据库连接引擎
        │   ├── logger.py  # 日志记录模块
        │   └── main.py  # 主逻辑程序
        ├── db  # 用户数据存储目录
        │   └── accounts  # 存各个用户的账户数据，一个用户一个文件
        │       ├── __init__.py
        │       └── test.json  # 一个普通用户账户文件
        └── log
            ├── access.log  # 用户访问和操作的相关日志
            └── test_shopping.log  # 用户购物历史日志

### 5. 程序测试 ###

1.  管理员登录失败  
    `python Atm/bin/manager.py`

################ATM admin manager#################
    account:a
    password:a
    Account [a] does not exist!
    account:a
    password:a
    Account [a] does not exist!
    account:a
    password:a
    Account [a] does not exist!
    2017-01-27 01:47:07,377 - access - ERROR - account [a] too many login attempts
    
    Process finished with exit code 0

1.  管理员登录（不允许普通用户登录）  
    `python Atm/bin/manager.py`

################ATM admin manager#################
    account:1000
    password:abc
    Permission denied
    
    Process finished with exit code 0

################ATM admin manager#################
    account:admin
    password:abc
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:1001
    Option does not exist!
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:1
    account id:1001
    password:1001
    Account [1001] is exist,try another account.
    account id:1002
    password:1002
    account [1002] added sucessed
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
      >>:2
    Please input your query account id:1002
    pay_day             :22                  
    credit              :15000               
    status              :0                   
    balance             :15000               
    id                  :1002                
    enroll_date         :2017-01-27          
    expire_date         :2022-01-26          
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:2
    Please input your query account id:1001
    pay_day             :22                  
    credit              :15000               
    status              :0                   
    id                  :1001                
    balance             :15000               
    enroll_date         :2017-01-27          
    expire_date         :2022-01-26          
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:>>:3
    account id:1001
    You can choose the items like this:
    {
        "password": "abc",
        "credit": 15000,
        "status": 0,
        "expire_date": "2021-01-01",
        "pay_day": 22
    }
    Input modify items(json):{
       "credit":20000,"pay_day": 23}
    Account infomation updated!
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:2
    Please input your query account id:1001
    pay_day             :23                  
    credit              :20000               
    status              :0                   
    balance             :15000               
    id                  :1001                
    enroll_date         :2017-01-27          
    expire_date         :2022-01-26          
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:>>:2
    Please input your query account id:0
    Get account [0] info pemission denied!
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>>>:2
    Please input your query account id:0
    Get account [0] info pemission denied!
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>>>:2
    Please input your query account id:0
    Get account [0] info pemission denied!
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:4
    ------------------Account bill:-------------------
    -----------------------End------------------------
    ------------------Account bill:-------------------
    expire_date         :2021-01-01          
    credit              :15000               
    enroll_date         :2016-01-02          
    status              :0                   
    balance             :4265.0              
    pay_day             :22                  
    id                  :1000                
    Today is not the bill generation day!
    Account [1000] need to repay [10735.0]
    -----------------------End------------------------
    ------------------Account bill:-------------------
    expire_date         :2022-01-26          
    id                  :1001                
    pay_day             :23                  
    status              :0                   
    balance             :15000               
    enroll_date         :2017-01-27          
    credit              :20000               
    Today is not the bill generation day!
    Account [1001] need to repay [5000]
    -----------------------End------------------------
    ------------------Account bill:-------------------
    expire_date         :2022-01-26          
    credit              :15000               
    pay_day             :22                  
    status              :0                   
    balance             :15000               
    enroll_date         :2017-01-27          
    id                  :1002                
    Today is not the bill generation day!
    Account [1002] needn't to repay.
    -----------------------End------------------------
    ------------------Account bill:-------------------
    -----------------------End------------------------
    
        ------- Admin erea ---------
        1.  添加账户
        2.  查询用户信息
        3.  用户信息修改（冻结帐户、用户信用卡额度等）
        4.  生成全部用户帐单
        5.  退出
    
    >>:5
    ###################Bye,thanks!####################

1.  普通用户登录（不允许管理员登录）  
    `python Atm/bin/atm.py`

##################Welcome to ATM##################
    account:1000
    password:abc
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:1
    status              :0                   
    pay_day             :22                  
    enroll_date         :2016-01-02          
    balance             :4265.0              
    expire_date         :2021-01-01          
    credit              :15000               
    id                  :1000                
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:2
     --------- BALANCE INFO --------
            Credit :    15000
            Balance:    4265.0
    Tip: [b] to back
    Input repay amount:200
    2017-01-28 09:49:30,934 - transaction - INFO - account:1000   action:repay    amount:200.0   interest:0.0
    New Balance:4465.0
    Tip: [b] to back
    Input repay amount:b
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:3
     --------- BALANCE INFO --------
            Credit :    15000
            Balance:    4465.0
    Tip: [b] to back
    Input withdraw amount:200
    2017-01-28 09:49:44,162 - transaction - INFO - account:1000   action:withdraw    amount:200.0   interest:10.0
    New Balance:4255.0
    Tip: [b] to back
    Input withdraw amount:b
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:4
     --------- BALANCE INFO --------
            Credit :    15000
            Balance:    4255.0
    
    (Tip: input [b] to back)
    Input receiver:1001
    Input transfer amount:200
    2017-01-28 09:50:06,723 - transaction - INFO - account:1000   action:transfer    amount:200.0   interest:10.0
    New Balance:4045.02017-01-28 09:50:06,723 - transaction - INFO - account:1001   action:receive    amount:200.0   interest:0.0
    
    Input receiver:b
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:5
     --------- BALANCE INFO --------
            Credit :    15000
            Balance:    4045.0
    
    (Tip: input [b] to back)
    Input your save amount:400
    2017-01-28 09:53:45,354 - transaction - INFO - account:1000   action:save    amount:400.0   interest:0.0
    New Balance:4445.0
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:6
    Please input the date you will query like [2016-12]>>>2016-12
    Account [1000] bills:
    --------------------------------------------------
    bill_date: 2017-1 account_id: 1000 need_repay: 10555
    
    bill_date: 2017-1 account_id: 1000 need_repay: 10555
    
    Account [1000] history log:
    --------------------------------------------------
    --------------------------------------------------
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:6
    Please input the date you will query like [2016-12]>>>2017-01
    Account [1000] bills:
    --------------------------------------------------
    bill_date: 2017-1 account_id: 1000 need_repay: 10555
    
    bill_date: 2017-1 account_id: 1000 need_repay: 10555
    
    Account [1000] history log:
    --------------------------------------------------
    2017-01-25 21:33:43,281 - transaction - INFO - account:1000   action:pay    amount:10000.0   interest:0.0
    2017-01-25 22:16:26,609 - transaction - INFO - account:1000   action:pay    amount:100.0   interest:0.0
    2017-01-25 22:16:52,347 - transaction - INFO - account:1000   action:pay    amount:100.0   interest:0.0
    2017-01-26 21:47:42,372 - transaction - INFO - account:1000   action:repay    amount:100.0   interest:0.0
    2017-01-26 21:51:13,819 - transaction - INFO - account:1000   action:repay    amount:100.0   interest:0.0
    2017-01-26 21:51:24,608 - transaction - INFO - account:1000   action:withdraw    amount:500.0   interest:25.0
    2017-01-26 21:53:16,352 - transaction - INFO - account:1000   action:withdraw    amount:200.0   interest:10.0
    2017-01-28 09:49:30,934 - transaction - INFO - account:1000   action:repay    amount:200.0   interest:0.0
    2017-01-28 09:49:44,162 - transaction - INFO - account:1000   action:withdraw    amount:200.0   interest:10.0
    2017-01-28 09:50:06,723 - transaction - INFO - account:1000   action:transfer    amount:200.0   interest:10.0
    2017-01-28 09:53:45,354 - transaction - INFO - account:1000   action:save    amount:400.0   interest:0.0
    --------------------------------------------------
    
        ------- Oldboy Bank ---------
        1.  账户信息
        2.  还款(示例)
        3.  取款(示例)
        4.  转账
        5.  存款
        6.  账单
        7.  退出
    
    >>:7
    ###################Bye,thanks!####################
    
    Process finished with exit code 1

1.  购物商城已注册用户登录  
    `python Shopping_mall/bin/shopping_mall.py`

------------Welcome to shopping mall!-------------
    
    --------------------------------------------------
        1.  Login
        2.  Sign up
        3.  Logout
    --------------------------------------------------
    
    >>:1
    Please input your user name and password!
    user:test
    password:test
    Input [y|yes] to view your purchase history,[others] means not.
    Please input:y
    User test shopping history:
    --------------------------------------------------
    2017-01-17 17:15:39,199 - shopping - INFO - account:test action:shopping product_number:2 goods:Tea cost:29378
    2017-01-17 17:22:13,163 - shopping - INFO - account:test action:shopping product_number:1 goods:Coffee cost:29348
    2017-01-24 21:55:50,796 - shopping - INFO - account:test action:shopping product_number:2 goods:Milk cost:29230
    2017-01-25 00:05:46,534 - shopping - INFO - account:test action:shopping product_number:1 goods:Coffee cost:29200
    2017-01-25 00:06:07,089 - shopping - INFO - account:test action:shopping product_number:1 goods:Coffee cost:29170
    2017-01-25 00:36:53,038 - shopping - INFO - account:test action:shopping product_number:1 goods:Coffee cost:29140
    2017-01-25 21:33:07,174 - shopping - INFO - account:test action:shopping product_number:1 goods:Coffee cost:30110
    -------------------Species list-------------------
    0 --> Mobile phone
    1 --> Car
    2 --> Drink
    -----------------------End------------------------
    [q|b] to quit;[c] to check;[t] to top up
    Input your choice:t
    Do you want to charge more money?[y|n|b]y
    Please use your ATM account to pay.
    Please input your top-up amount:1000
    account:abc
    password:a
    Account [abc] does not exist!
    account:1000
    password:abc
    2017-01-28 10:31:52,106 - transaction - INFO - account:1000   action:pay    amount:1000.0   interest:0.0
    Pay successed
    Your balance is [41310]
    -------------------Species list-------------------
    0 --> Mobile phone
    1 --> Car
    2 --> Drink
    -----------------------End------------------------
    [q|b] to quit;[c] to check;[t] to top up
    Input your choice:2
    ---->Enter Drink
    -------------------Product list-------------------
    0.Milk                 59                  
    1.Coffee               30                  
    2.Tea                  311                 
    -----------------------End------------------------
    [q|quit] to quit;[b|back] to back;[c|check] to check
    Please choice the product:1
    Please input the number of product:2
    Added [2] [Coffee] into shopping cart,your balance is [40250]
    2017-01-28 10:32:07,465 - shopping - INFO - account:test action:shopping product_number:2 goods:Coffee cost:40250
    -------------------Product list-------------------
    0.Milk                 59                  
    1.Coffee               30                  
    2.Tea                  311                 
    -----------------------End------------------------
    [q|quit] to quit;[b|back] to back;[c|check] to check
    Please choice the product:b
    -------------------Species list-------------------
    0 --> Mobile phone
    1 --> Car
    2 --> Drink
    -----------------------End------------------------
    [q|b] to quit;[c] to check;[t] to top up
    Input your choice:0
    ---->Enter Mobile phone
    -------------------Product list-------------------
    0.Iphone7              6188                
    1.Iphone7 plus         7888                
    2.Xiaomi5              2888                
    -----------------------End------------------------
    [q|quit] to quit;[b|back] to back;[c|check] to check
    Please choice the product:0
    Please input the number of product:1
    2017-01-28 10:32:20,656 - shopping - INFO - account:test action:shopping product_number:1 goods:Iphone7 cost:34062
    Added [1] [Iphone7] into shopping cart,your balance is [34062]
    -------------------Product list-------------------
    0.Iphone7              6188                
    1.Iphone7 plus         7888                
    2.Xiaomi5              2888                
    -----------------------End------------------------
    [q|quit] to quit;[b|back] to back;[c|check] to check
    Please choice the product:c
    *********You purchased products as below**********
    Goods                Price           Number     Cost                
    Iphone7              6188            1          6188                
    Coffee               30              2          60                  
    ***********************End************************
    You total cost:                                 6248                
    Your balance is [34062]
    -------------------Product list-------------------
    0.Iphone7              6188                
    1.Iphone7 plus         7888                
    2.Xiaomi5              2888                
    -----------------------End------------------------
    [q|quit] to quit;[b|back] to back;[c|check] to check
    Please choice the product:b
    -------------------Species list-------------------
    0 --> Mobile phone
    1 --> Car
    2 --> Drink
    -----------------------End------------------------
    [q|b] to quit;[c] to check;[t] to top up
    Input your choice:q
    *********You purchased products as below**********
    Goods                Price           Number     Cost                
    Iphone7              6188            1          6188                
    Coffee               30              2          60                  
    ***********************End************************
    You total cost:                                 6248                
    Your balance is [34062]
    ###################Bye,thanks!####################
    
    Process finished with exit code 1

1.  购物商城新注册用户  
    `python Shopping_mall/bin/shopping_mall.py`

------------Welcome to shopping mall!-------------
    
    --------------------------------------------------
     1. Login
     2. Sign up
     3. Logout --------------------------------------------------
    
    >>:2
    user:test01
    password:test01
    -------------------Species list-------------------
    0 --> Drink
    1 --> Mobile phone
    2 --> Car
    -----------------------End------------------------
    [q|b] to quit;[c] to check;[t] to top up
    Input your choice:c
    *********You purchased products as below**********
    Goods                Price           Number     Cost                
    ***********************End************************
    You total cost:                                 0                   
    Your balance is [0]
    -------------------Species list-------------------
    0 --> Drink
    1 --> Mobile phone
    2 --> Car
    -----------------------End------------------------
    [q|b] to quit;[c] to check;[t] to top up
    Input your choice:q
    *********You purchased products as below**********
    Goods                Price           Number     Cost                
    ***********************End************************
    You total cost:                                 0                   
    Your balance is [0]
    ###################Bye,thanks!####################
    
    Process finished with exit code 1

## 计算器 ##

作业需求

计算器：

> 1.  算式支持加减乘除及括号
> 2.  有历史记录

### 1. 程序说明 ###

计算器实现功能如下：

*  \[x\] 算式支持加减乘除及括号
 *  \[x\] 有历史记录

[ygqygq2的博客地址][ygqygq2]  
作业地址：  
[https://git.oschina.net/ygqygq2/python\_homework/tree/master/day5作业][https_git.oschina.net_ygqygq2_python_homework_tree_master_day5]

### 2. 基本流程图 ###

![计算器][SouthEast 1]

### 3. 程序结构: ###

.
    ├── Calculator  # 计算器主程目录
    │   ├── __init__.py
    │   ├── bin  # 执行文件目录
    │   │   ├── __init__.py
    │   │   ├── calculator.py  # 计算器执行程序
    │   ├── conf  # 配置目录
    │   │   ├── __init__.py
    │   │   └── settings.py  # 配置文件
    │   ├── core  # 主要逻辑程序目录
    │   │   ├── __init__.py
    │   │   ├── logger.py  # 日志记录模块
    │   │   └── main.py  # 主逻辑程序
    │   └── log  # 日志根目录
    │       ├── __init__.py
    │       └── history.log  # 计算器历史日志
    ├── README.md   # readme文件
    ├── calculator.jpg  # 基本流程图

### 4. 程序测试 ###

`python Calculator/bin/calculator.py`

**************Welcome to calculator!**************
    Please input your expression[q to quit]：1 - 2 * ( (60-30 +(-40/5) * (9-2*5/3 + 7 /3*99/4*2998 +10 * 568/14 )) - (-4*3)/ (16-3*2) )
    The expression result：2776672.6952380957 --------------------------------------------------
    Please input your expression[q to quit]：1/(2-2)+3*8
    Do not allow the divisor is 0!

**************Welcome to calculator!**************
    Please input your expression[q to quit]：1+1+3
    The expression result：5.0 --------------------------------------------------
    Please input your expression[q to quit]：q
    *********************Bye bye**********************

[ygqygq2]: http://blog.csdn.net/ygqygq2
[https_git.oschina.net_ygqygq2_python_homework_tree_master_day5]: https://git.oschina.net/ygqygq2/python_homework/tree/master/day5作业
[SouthEast]: /images/20220711/2ee770d3bab64d629d4ffc88422e1a5e.png
[SouthEast 1]: /images/20220711/5d59e1ee24e146c2b2f8a90552012f50.png