update,

2025-01-31 19:38:17 +08:00
parent b7e6ca17ef
commit 5ea2c37f8d
124 changed files with 3736 additions and 0 deletions
--- a/daniel_jo/ITP4459_assignment_2023/src/docker/docker-compose.yml
+++ b/daniel_jo/ITP4459_assignment_2023/src/docker/docker-compose.yml
@@ -0,0 +1,34 @@
+services:
+    mysql:
+        image: mysql:latest
+        # container_name: db
+        restart: unless-stopped
+
+        environment:
+            MYSQL_ROOT_PASSWORD: root
+            MYSQL_DATABASE: itp4459_asg
+            MYSQL_USER: db_user
+            MYSQL_PASSWORD: db_user_pass
+        ports:
+            - "3306:3306"
+        volumes:
+            - db:/var/lib/mysql
+
+    phpmyadmin:
+        image: phpmyadmin/phpmyadmin
+        # container_name: pma
+        restart: unless-stopped
+        links:
+            - mysql
+        environment:
+            PMA_HOST: mysql
+            PMA_PORT: 3306
+            PMA_ARBITRARY: 1
+            PMA_USER: "root"
+            PMA_PASSWORD: "root"
+
+        ports:
+            - 8081:80
+
+volumes:
+    db:
--- a/daniel_jo/ITP4459_assignment_2023/src/python/Pipfile
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/Pipfile
@@ -0,0 +1,16 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+mysql = "*"
+mysql-connector-python = "*"
+mistune = ">=0.7.1"
+python-docx = ">=0.8.6"
+sympy = ">=0.7.6.1"
+
+[dev-packages]
+
+[requires]
+python_version = "3.10"
--- a/daniel_jo/ITP4459_assignment_2023/src/python/Pipfile.lock
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/Pipfile.lock
@@ -0,0 +1,214 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "6fc14ab26679ecb3c73181a5c3e6daa6ec1d2ff80343097b892a649cd17e0574"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.10"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "lxml": {
+            "hashes": [
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+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==4.9.2"
+        },
+        "mistune": {
+            "hashes": [
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+            ],
+            "index": "pypi",
+            "version": "==2.0.5"
+        },
+        "mpmath": {
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+            "version": "==1.3.0"
+        },
+        "mysql": {
+            "hashes": [
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+            ],
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+        },
+        "mysql-connector-python": {
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+            ],
+            "index": "pypi",
+            "version": "==8.0.33"
+        },
+        "mysqlclient": {
+            "hashes": [
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+            ],
+            "markers": "python_version >= '3.5'",
+            "version": "==2.1.1"
+        },
+        "protobuf": {
+            "hashes": [
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+                "sha256:e64857f395505ebf3d2569935506ae0dfc4a15cb80dc25261176c784662cdcc4",
+                "sha256:f4bd856d702e5b0d96a00ec6b307b0f51c1982c2bf9c0052cf9019e9a544ba99",
+                "sha256:f4c42102bc82a51108e449cbb32b19b180022941c727bac0cfd50170341f16ee"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==3.20.3"
+        },
+        "python-docx": {
+            "hashes": [
+                "sha256:1105d233a0956dd8dd1e710d20b159e2d72ac3c301041b95f4d4ceb3e0ebebc4"
+            ],
+            "index": "pypi",
+            "version": "==0.8.11"
+        },
+        "sympy": {
+            "hashes": [
+                "sha256:938f984ee2b1e8eae8a07b884c8b7a1146010040fccddc6539c54f401c8f6fcf",
+                "sha256:e32380dce63cb7c0108ed525570092fd45168bdae2faa17e528221ef72e88658"
+            ],
+            "index": "pypi",
+            "version": "==1.11.1"
+        }
+    },
+    "develop": {}
+}
--- a/daniel_jo/ITP4459_assignment_2023/src/python/app.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/app.py
@@ -0,0 +1,190 @@
+import tkinter
+import tkinter.ttk
+
+import constants
+from models import Programme
+from widgets import ModuleWidget
+
+from pprint import pprint
+
+# app.py - Main GUI dialog
+
+class App(tkinter.Tk):
+    def __init__(self, db):
+        super().__init__()
+        self.__db = db
+
+        self.__programme = None
+        self.__modules = None
+
+        self.refresh_db()
+        self.setup_ui()
+
+    # NOTE: Do not modify this method
+    def report_callback_exception(self, *args):
+        """When an error is occurred, raise the exception
+        so main_gui.py will handle the display of error.
+        """
+        raise args[1].with_traceback(args[2])
+
+    def refresh_db(self):
+        # Fetch all program records from database, and store it in __programme as a list
+        self.__programme = Programme.fetchall(self.__db)
+
+    def setup_ui(self):
+        self.title(constants.APP_NAME)
+        self.minsize(640, 480)
+
+        # Set weight of column 0 for auto resizing on X axis
+        self.columnconfigure(0, weight=1)
+
+        # Header
+        frm_top_bar = tkinter.Frame(self)
+        frm_top_bar.grid(row=0, sticky=tkinter.EW)
+        tkinter.Label(
+            frm_top_bar,
+            text = constants.APP_NAME,
+            font = ('bold', 16)
+        ).pack(side = tkinter.LEFT, padx=8, pady=8)
+        tkinter.ttk.Separator(self).grid(row=1, sticky=tkinter.EW)
+
+        # Content
+        frm_content = tkinter.Frame(self)
+        frm_content.grid(row=2, sticky=tkinter.NSEW)
+        self.rowconfigure(2, weight=1)
+
+        # Options
+        frm_filter = tkinter.LabelFrame(frm_content, text = "Options")
+        frm_filter.pack(fill=tkinter.X, side=tkinter.TOP, padx=8, pady=(4, 0))
+        frm_filter_container = tkinter.Frame(frm_filter)
+        frm_filter_container.pack(fill=tkinter.BOTH, side=tkinter.TOP, padx=6, pady=(0, 4))
+
+        # Options variables
+        # Option widgets
+        tkinter.Label(frm_filter_container,text = "Programme",).grid(row=0, column=0, padx=(0, 4))
+        list_of_programme=[]
+        for p in self.__programme:
+            list_of_programme.append(p.get_name())
+
+        self.selected_programme = tkinter.StringVar()
+        self.__om_programme_filter = tkinter.ttk.Combobox(frm_filter_container,textvariable=self.selected_programme, width=50)
+        self.__om_programme_filter.set('Please select')
+        self.__om_programme_filter['values'] = list_of_programme
+        self.__om_programme_filter['state'] = 'readonly'
+        self.__om_programme_filter.grid(row=0, column=1, padx=(0, 4), sticky=tkinter.EW)
+        self.__om_programme_filter.bind('<<ComboboxSelected>>', self.on_programme_changed )
+
+        # Semester select
+        tkinter.Label( frm_filter_container, text = "Semester").grid(row=0, column=2, padx=(0, 4))
+        self.selected_semester = tkinter.StringVar()
+        self.__om_semester_filter = tkinter.ttk.Combobox(frm_filter_container, textvariable=self.selected_semester)
+        self.__om_semester_filter.set('Please select')
+        self.__om_semester_filter['state'] = 'disabled'
+        self.__om_semester_filter.grid(row=0, column=3, padx=(4, 4))
+        self.__om_semester_filter.bind('<<ComboboxSelected>>', self.on_semester_changed)
+
+        # Modules
+        frm_modules = tkinter.LabelFrame(frm_content, text = "Modules")
+        frm_modules.pack(fill=tkinter.BOTH, side=tkinter.TOP, expand=1, padx=8, pady=(4, 0))
+        self.__frm_modules_container = tkinter.Frame(frm_modules)
+        self.__frm_modules_container.pack(fill=tkinter.BOTH, side=tkinter.TOP, padx=6, pady=(0, 4))
+
+        self.__module_widgets = list()
+        for _ in range(constants.APP_MAX_MODULES):
+            widget = ModuleWidget(self.__frm_modules_container, self.on_gpa_changed)
+            widget.get_frame().pack(fill=tkinter.X, side=tkinter.TOP, expand=1, pady=8)
+            widget.set_module(None)
+
+            self.__module_widgets.append(widget)
+
+        # Bottom bar
+        frm_bottom_bar = tkinter.Frame(self)
+        frm_bottom_bar.grid(row=3, column=0,padx=(0, 10), pady=(4,4), sticky=tkinter.E)
+
+        # Result Label
+        self.semester_gpa = tkinter.StringVar()
+        self.lbl_stu_list = tkinter.ttk.Label(frm_bottom_bar, text='Semester GPA: %.2f' % 0, font=("bold",11))
+        self.lbl_stu_list.grid(row=0, column=0, sticky=tkinter.E)
+
+    def setup_module_list(self):
+        # Update the ModuleWidget in list __module_widgets to display
+        # modules for the selected programme and semester
+        current_select_idx = self.__om_semester_filter.current()
+        selected_semester = list(sorted(self.__modules.keys()))[current_select_idx]
+        module_in_semester = self.__modules[selected_semester]
+        for widget in self.__frm_modules_container.winfo_children():
+            widget.destroy()
+
+        self.__module_widgets = list()
+        i = 0
+        for _ in range(constants.APP_MAX_MODULES):
+            widget = ModuleWidget(self.__frm_modules_container, self.on_gpa_changed)
+            widget.get_frame().pack(fill=tkinter.X, side=tkinter.TOP, expand=1, pady=8)
+            if (i < len(module_in_semester)):
+                widget.set_module(module_in_semester[i])
+
+            self.__module_widgets.append(widget)
+            i = i + 1
+
+    def on_programme_changed(self, _):
+        # Get selected programme based on option menu index, and update GUI
+        for program in self.__programme:
+            if (self.selected_programme.get() == program.get_name()):
+                self.__om_semester_filter['values'] = sorted(program.get_modules().keys())
+                self.__modules = program.get_modules()
+                break
+        self.__om_semester_filter['state'] = 'readonly'
+
+        self.__om_semester_filter.set('Please select')
+
+        for widget in self.__frm_modules_container.winfo_children():
+            widget.destroy()
+
+        self.__module_widgets = list()
+        for _ in range(constants.APP_MAX_MODULES):
+            widget = ModuleWidget(self.__frm_modules_container, self.on_gpa_changed)
+            widget.get_frame().pack(fill=tkinter.X, side=tkinter.TOP, expand=1, pady=8)
+            widget.set_module(None)
+            self.__module_widgets.append(widget)
+
+        # reset gpa
+        self.lbl_stu_list.configure(text='Semester GPA: %.2f' % (0))
+
+
+    def on_semester_changed(self, _):
+        # Get modules based on option menu value, and update GUI
+        self.setup_module_list()
+
+        # reset gpa
+        self.lbl_stu_list.configure(text='Semester GPA: %.2f' % (0))
+
+
+    def on_gpa_changed(self):
+        # Calcuate semester GPA based on self.__modules
+
+        # 1.	For each modules in self.__modules, App class
+        # 2.	Obtain the module credit of current module and add it to the total credits
+        # 3.	Calculate the module gpa by multiplying the current module gpa and module credit
+        # 4.	Add the calculated module gpa to total module gpa
+        # 5.	After all module gpa are calculated, divide the total module gpa by total credits
+
+        total = 0
+        current_select_idx = self.__om_semester_filter.current()
+        selected_semester = list(sorted(self.__modules.keys()))[current_select_idx]
+        module_in_semester = self.__modules[selected_semester]
+        number_of_modules = len(module_in_semester)
+
+        should_update = True
+        all_credit = 0
+        for i in range(0, number_of_modules):
+            gpa = self.__module_widgets[i].get_gpa()
+            if (gpa == -1):
+                # not selected
+                should_update = False
+            else:
+                credit =self.__module_widgets[i].get_module().get_credit()
+                all_credit = all_credit + credit
+                total = total + (gpa * credit)
+
+        if should_update:
+            self.lbl_stu_list.configure(text='Semester GPA: %.2f' % (total / all_credit))
--- a/daniel_jo/ITP4459_assignment_2023/src/python/constants.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/constants.py
@@ -0,0 +1,26 @@
+# Database
+# NOTE: Modify the username and password if needed
+DB_HOST = "localhost"
+DB_NAME = "itp4459_asg"
+
+DB_USER = "db_user"
+DB_PASS = "db_user_pass"
+
+# Tkinter GUI
+APP_NAME = "GPA Calculator"
+APP_MAX_MODULES = 7
+
+# Application logic
+GPA_MAPPING = {
+    "A": 4,
+    "A-": 3.7,
+    "B+": 3.3,
+    "B": 3,
+    "B-": 2.7,
+    "C+": 2.3,
+    "C": 2,
+    "C-": 1.7,
+    "D+": 1.3,
+    "D": 1,
+    "F": 0
+}
--- a/daniel_jo/ITP4459_assignment_2023/src/python/db.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/db.py
@@ -0,0 +1,78 @@
+from abc import ABC, abstractmethod
+
+import mysql.connector
+
+# db.py - Database related classes
+# NOTE: You do not need to modify this source file
+
+__all__ = (
+    'MySQLConnection', 'MySQLObject'
+)
+
+class MySQLConnection:
+    """A class to handle all database related functions for this assingment."""
+
+    def __init__(self, host, user, password, database=None):
+        """Initialize connection to MySQL server.
+
+        Create database if needed automatically.
+        """
+        self.db = mysql.connector.connect(
+            host=host,
+            user=user,
+            password=password
+        )
+        if database is not None:
+            with self.db.cursor() as cursor:
+                cursor.execute(f"CREATE DATABASE IF NOT EXISTS {database};")
+                self.db.commit()
+            self.db.database = database
+
+    def close(self):
+        """Closes the database connection."""
+        self.db.close()
+
+    def cursor(self):
+        """Returns a database cursor, for executing multiple statments
+        in a single transaction.
+        """
+        return self.db.cursor()
+
+    def commit(self):
+        """Commit changes to database."""
+        self.db.commit()
+
+    def execute(self, query):
+        """Commit: Python -> Database
+
+        e.g. CREATE, INSERT and UPDATE
+        """
+        with self.db.cursor() as cursor:
+            cursor.execute(query)
+            self.db.commit()
+
+    def fetchone(self, query):
+        """Fetch: Python <- Database
+
+        e.g. SELECT and SHOW
+        """
+        with self.db.cursor() as cursor:
+            cursor.execute(query)
+            return cursor.fetchone()
+
+    def fetchall(self, query):
+        """Fetch: Python <- Database
+
+        e.g. SELECT and SHOW
+        """
+        with self.db.cursor() as cursor:
+            cursor.execute(query)
+            return cursor.fetchall()
+
+class MySQLObject(ABC):
+    """A database managed object."""
+    @staticmethod
+    @abstractmethod
+    def fetchall(db):
+        """Returns a list of object imported from database."""
+        return NotImplemented
--- a/daniel_jo/ITP4459_assignment_2023/src/python/main_db.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/main_db.py
@@ -0,0 +1,99 @@
+import constants
+from db import MySQLConnection
+
+# main_db.py - Program entry point for Part 1 Database
+
+tbl_programme = """
+    CREATE TABLE IF NOT EXISTS programmes (
+        programme_id VARCHAR(9) NOT NULL,
+        programme_name VARCHAR(100) NOT NULL,
+        PRIMARY KEY (programme_id)
+    )"""
+
+tbl_module = """
+    CREATE TABLE IF NOT EXISTS modules (
+        module_id VARCHAR(7) NOT NULL,
+        module_name VARCHAR(100) NOT NULL,
+        module_credit INT,
+        PRIMARY KEY (module_id)
+    )"""
+
+tbl_mapping = """
+    CREATE TABLE IF NOT EXISTS mappings (
+        mapping_programme_id VARCHAR(9) NOT NULL,
+        mapping_semester INT NOT NULL,
+        mapping_module_id VARCHAR(7) NOT NULL,
+        PRIMARY KEY (mapping_programme_id, mapping_semester, mapping_module_id),
+        FOREIGN KEY (mapping_programme_id) REFERENCES programmes(programme_id),
+        FOREIGN KEY (mapping_module_id) REFERENCES modules(module_id)
+    )"""
+
+radius = (('circle', 1.0),('circle', 2.0),('circle', 3.0))
+query = "INSERT INTO circles (name, radius) VALUES (%s, %s)"
+
+insert_programmes = (
+    ('IT114124', "Higher Diploma in AI and Smart Technology"),
+    ('IT114122', "Higher Diploma in Cybersecurity")
+)
+insert_programme_query = "INSERT INTO programmes (programme_id, programme_name) VALUES (%s, %s)"
+
+insert_modules = (
+    ("LAN3100","English & Communication: Workplace Interaction","6"),
+    ("LAN3103","English & Communication: Workplace Correspondance","6"),
+    ("LAN4107","English & Communication: Reports","9"),
+    ("LAN4108","English & Communication: Persuasive Presentations","9"),
+    ("LAN4101","English & Communication: Promotional Materials","10"),
+    ("LAN3003","Vocational Chinese Communication: Putonghua Conversation and Reports","6"),
+    ("LAN4003","Vocational Chinese Communication: Putonghua Presentations, Administrative and Technical Text Writing","9")
+)
+
+insert_modules_query = "INSERT INTO modules (module_id, module_name, module_credit) VALUES (%s, %s, %s)"
+
+insert_mappings = (
+    ("IT114124","1","LAN3100"),
+    ("IT114124","1","LAN3103"),
+    ("IT114124","1","LAN3003"),
+    ("IT114124","2","LAN4107"),
+    ("IT114124","2","LAN4003"),
+    ("IT114124","4","LAN4108"),
+    ("IT114124","5","LAN4101"),
+    ("IT114122","1","LAN3100"),
+    ("IT114122","1","LAN3103"),
+    ("IT114122","1","LAN3003"),
+    ("IT114122","2","LAN4107"),
+    ("IT114122","2","LAN4003"),
+    ("IT114122","4","LAN4108"),
+    ("IT114122","5","LAN4101")
+)
+
+insert_mappings_query = "INSERT INTO mappings (mapping_programme_id, mapping_semester, mapping_module_id) VALUES (%s, %s, %s)"
+
+if __name__ == "__main__":
+    db = MySQLConnection(
+        host=constants.DB_HOST,
+        user=constants.DB_USER,
+        password=constants.DB_PASS
+    )
+
+    with db.cursor() as cursor:
+        # Recreate database and select as default
+        cursor.execute(f"DROP DATABASE IF EXISTS {constants.DB_NAME};")
+        cursor.execute(f"CREATE DATABASE {constants.DB_NAME};")
+        cursor.execute(f"USE {constants.DB_NAME};")
+
+        # Tables
+        cursor.execute(tbl_programme)
+        cursor.execute(tbl_module)
+        cursor.execute(tbl_mapping)
+
+        # Records
+        # cursor.executemany(query, radius)
+        cursor.executemany(insert_programme_query, insert_programmes)
+        cursor.executemany(insert_modules_query, insert_modules)
+        cursor.executemany(insert_mappings_query, insert_mappings)
+
+    db.commit()
+    db.close()
+
+
+
--- a/daniel_jo/ITP4459_assignment_2023/src/python/main_gui.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/main_gui.py
@@ -0,0 +1,42 @@
+from tkinter import messagebox
+
+import constants
+import traceback
+from app import App
+from db import MySQLConnection
+
+# main_gui.py - Program entry point for Part 2 GUI
+# NOTE: You do not need to modify this source file
+
+if __name__ == "__main__":
+    app = None
+    db = None
+    try:
+        # Create connection to database
+        db = MySQLConnection(
+            host=constants.DB_HOST,
+            user=constants.DB_USER,
+            password=constants.DB_PASS,
+            database=constants.DB_NAME)
+
+        # Create and start app
+        app = App(db)
+        app.mainloop()
+    except Exception as e:
+        # Display error in console
+        traceback.print_exception(e)
+
+        # Display error as message box
+        errorType = f"{type(e).__name__}"
+        messagebox.showerror(errorType, e.__str__())
+
+        # Close the app window
+        if app is App:
+            app.destroy()
+
+        # Raise the error again for debugger
+        raise e
+    finally:
+        # Close database connection
+        if db is MySQLConnection:
+            db.close()
--- a/daniel_jo/ITP4459_assignment_2023/src/python/models.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/models.py
@@ -0,0 +1,143 @@
+import constants
+from db import MySQLObject
+
+# models.py - Python representation of database table records
+
+class Programme(MySQLObject):
+    def __init__(self, id, name):
+        # initialize the id, name and modules attributes.
+        self.__id = id # a non-public string to store the id of the programme.
+        self.__name = name # a non-public string so store the name of the programme.
+        self.__modules = {} # a non-public dictionary to store Module objects, grouped by semester.
+
+    def __eq__(self, other):
+        # returns true if the id attribute is equal to the other object’s  	id attribute.
+        return self.__id == other.get_id()
+
+    def get_id(self):
+        # returns the id for this programme.
+        return self.__id
+
+    def get_name(self):
+        # returns the name for this programme.
+        return self.__name
+
+    def get_modules(self):
+        # returns Module dictionary object which contains module list of all semesters
+        return self.__modules
+
+    def add_module(self, semester, module):
+        # append module into list inside modules’ dictionary,
+        # using  semester as key.
+        if semester in self.__modules:
+            # module already contain semester, fall to end of function to add module into semester
+            pass
+        else:
+            # If the semester key is not found in the  dictionary,
+            # an empty list will be created to store the module object, init an empty semester list literally
+            self.__modules[semester]= []
+
+        # the semester will be available as a key after this line, append module into semester
+        self.__modules[semester].append(module)
+
+    def get_modules_by_semester(self, semester):
+        # returns Module list object from modules dictionary, using semester as key
+        return self.__modules[semester]
+
+    @staticmethod
+    def fetchall(db):
+        # overrides the parent class fetchall abstract static method to
+        # create a list of Programme objects retrieved from database table programme.
+        # For each of the created Programme objects,
+        # The modules belongs to the particular programme
+
+        output = []
+        temp= {}
+
+        with db.cursor() as cursor:
+            cursor.execute(f"USE {constants.DB_NAME};")
+            query = '''
+SELECT programme_id, mapping_semester, module_id, programme_name, module_name, module_credit
+FROM programmes
+INNER JOIN mappings ON programmes.programme_id = mappings.mapping_programme_id
+INNER JOIN modules ON mappings.mapping_module_id = modules.module_id;
+            '''
+            cursor.execute(query)
+            records = cursor.fetchall()
+
+            # row => module, bloat modules
+            for row in records:
+                programme_id = row[0]
+                mapping_semester = row[1]
+                module_id = row[2]
+                programme_name = row[3]
+                module_name = row[4]
+                module_credit = row[5]
+                new_module = Module(module_id, module_name, module_credit)
+
+                if not(programme_id in temp):
+                    temp[programme_id] = {'_name': programme_name}
+                if not(mapping_semester in temp[programme_id] ):
+                    temp[programme_id][mapping_semester] = []
+
+                temp[programme_id][mapping_semester].append(new_module)
+
+            for programme_id in temp.keys():
+                new_program = Programme(programme_id, temp[programme_id]['_name'])
+                # semester
+                for semester in temp[programme_id].keys():
+                    if (type(semester) == type(1)):
+                        modules_in_semester = temp[programme_id][semester]
+                        for module in modules_in_semester:
+                            new_program.add_module(semester, module)
+
+                output.append(new_program)
+
+        return output
+
+class Module(MySQLObject):
+    def __init__(self, id, name, credit):
+        # initialize the id, name and credit attributes
+        self.__id = id # a non-public string to store the id of the module
+        self.__name = name # a non-public string to store the name of the module
+        self.__credit = credit # a non-public integer to store the credit of the module
+
+    def __eq__(self, other):
+        # returns true of the id attribute is equal to the other object’s id attribute
+        if (hasattr(other,'get_id')):
+            return self.__id == other.get_id()
+        else:
+            return False
+
+    def get_id(self):
+        # returns the id for this module
+        return self.__id
+
+    def get_name(self):
+        # returns the name for this module
+        return self.__name
+
+    def get_credit(self):
+        # returns the credit for this module
+        return self.__credit
+
+    @staticmethod
+    def fetchall(db):
+        # fetchall overrides the parent class fetchall abstract static method to
+        #   return a list of Module objects retrieved from database table module.
+        # Module objects will be created and appended into the
+        #   returned list for every records retrieved  from database.
+        query = "select module_id, module_name, module_credit from modules"
+        output = []
+
+        with db.cursor() as cursor:
+            cursor.execute(f"USE {constants.DB_NAME};")
+            cursor.execute(query)
+            records = cursor.fetchall()
+            for row in records:
+                module_id = row[0]
+                module_name = row[1]
+                module_credit = row[2]
+                output.append(Module(module_id, module_name, module_credit))
+
+        return output
--- a/daniel_jo/ITP4459_assignment_2023/src/python/readme.md
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/readme.md
@@ -0,0 +1,11 @@
+```batch
+
+# start docker
+docker compose up -d
+
+pipenv shell
+
+# inside shell
+./run.bat
+
+```
--- a/daniel_jo/ITP4459_assignment_2023/src/python/run.bat
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/run.bat
@@ -0,0 +1,10 @@
+@REM feed
+@REM python ./main_db.py
+python "./main_gui.py"
+
+@REM python ./test_combobox.py
+
+@REM python .\options_test.py
+@REM python ".\models.py"
+
+@REM python ".\test_models.py"
--- a/daniel_jo/ITP4459_assignment_2023/src/python/widgets.py
+++ b/daniel_jo/ITP4459_assignment_2023/src/python/widgets.py
@@ -0,0 +1,92 @@
+import tkinter
+from constants import GPA_MAPPING
+import tkinter as tk
+import tkinter.ttk as ttk
+from pprint import pprint
+
+# widgets.py - Implements a custom GUI widget 'ModuleWidget'
+# TODO: Remove all 'pass' statements and complete the implementation based on class description
+
+class ModuleWidget:
+    """A supplier class for displaying a module and returning the GPA value.
+    """
+    def __init__(self, master, command):
+        self.__module = None
+        self.__command = command
+        self.__gpa = -1
+
+        self.setup_ui(master)
+        self.set_module(None)
+
+    def set_module(self, module = None):
+        if (module != None):
+            # TODO: When module is provided:
+            #       - Update UI to display module information
+            #       - Enable option menu
+
+            self.__var_name.set(module.get_name())
+            self.__var_credit.set(module.get_credit())
+            self.__ent_name['state'] = 'readonly'
+            self.__ent_credit['state'] = 'readonly'
+            self.__om_grade['state'] = 'readonly'
+
+        else:
+            # - Clear entry content
+            # - Disable option menu
+            self.__var_name.set('')
+            self.__var_credit.set('')
+            self.__ent_name['state'] = 'disabled'
+            self.__ent_credit['state'] = 'disabled'
+            self.__om_grade['state'] = 'disabled'
+
+        # Finally, update self.__module
+        self.__module = module
+
+    def get_module(self):
+        return self.__module
+
+    def get_frame(self):
+        return self.__frame
+
+    def get_gpa(self):
+        return self.__gpa
+
+    def setup_ui(self, master):
+        # Variables
+
+        # Contianer
+        self.__frame = tkinter.Frame(master)
+        # pprint(self)
+
+        # Module name
+        tkinter.Label(self.__frame, text = "Module", ).grid(row=0, column=0, padx=(0, 4), sticky=tkinter.W)
+        self.__var_name = tkinter.StringVar(value="")
+        self.__ent_name = ttk.Entry(self.__frame, textvariable=self.__var_name)
+        self.__ent_name.config(width=50)
+        self.__ent_name.grid(row=0, column=1, padx=(4, 4),  sticky=tkinter.E+tkinter.W)
+
+        # Module credit
+        tkinter.Label(self.__frame, text = "Credit", ).grid(row=0, column=2, padx=(0, 4), sticky=tkinter.W)
+        self.__var_credit = tkinter.StringVar(value="")
+        self.__ent_credit = ttk.Entry(self.__frame, textvariable=self.__var_credit)
+        self.__ent_credit['state'] = 'disabled'
+        self.__ent_credit.config(width=5)
+        self.__ent_credit.grid(row=0, column=3, padx=(4, 4),  sticky=tkinter.E+tkinter.W)
+
+        # Grade
+        tkinter.Label(self.__frame, text = "Grade", ).grid(row=0, column=4, padx=(0, 4), sticky=tkinter.W)
+        self.__var_grade = tk.StringVar()
+        self.__om_grade = ttk.Combobox(self.__frame, textvariable=self.__var_grade)
+        self.__om_grade.set('Please select')
+        self.__om_grade['values'] = [gpa for gpa in GPA_MAPPING.keys()]
+        self.__om_grade['state'] = 'disabled'
+        self.__om_grade.config(width=15)
+        self.__om_grade.grid(row=0, column=5, padx=(0, 4), sticky=tkinter.W)
+        self.__om_grade.bind('<<ComboboxSelected>>', self.on_grade_changed)
+
+    def on_grade_changed(self, _):
+        # Get GPA based on combo box value
+        letter_grade = list(GPA_MAPPING.keys())[self.__om_grade.current()]
+        num_grade = GPA_MAPPING[letter_grade]
+        self.__gpa = num_grade
+        self.__command()
--- a/daniel_jo/ITP4459_assignment_2023/src/readme.md
+++ b/daniel_jo/ITP4459_assignment_2023/src/readme.md
@@ -0,0 +1,16 @@
+```bash
+cd docker
+    docker compose build
+    docker compose up -d
+cd ..
+
+# after docker up and running
+cd python
+    pipenv shell
+    pipenv sync
+
+# inside pip environment
+python main_db.py
+python main_gui.py
+
+```
--- a/daniel_jo/ITP4459_assignment_2023/src/scripts/dev.ps1
+++ b/daniel_jo/ITP4459_assignment_2023/src/scripts/dev.ps1
@@ -0,0 +1,19 @@
+pushd docker
+
+    docker-compose pull
+
+    docker-compose build
+
+    docker-compose kill
+    docker-compose down
+    timeout 1
+
+    rmdir docker\volumes
+
+    docker-compose up -d
+
+    # docker-compose logs -f
+
+    # docker-compose exec -it ubuntu bash
+
+popd