Python_Modul_Week_3

Question1: Create a Python class called "Rectangle" that represents a rectangle. The Rectangle class must have the following properties and methods:

Features:

• width (an integer)
• height (an integer)

Methods:

• area(self): A method that calculates and returns the area of ​​the rectangle.
• perimeter(self): A method that calculates and returns the perimeter of the rectangle.
• Create an instance of Rectangle class, set its width to 5 and height to 7, then print its area and perimeter.

Question2: Create a "School" class in Python. This class should have the following features and functionality:

Features:

• "name"
• "foundation_year"
• "students"
• "teachers"

Methods:

• add_new_student(self, student_name, class): A method used to add a new student to the school. It takes the student's name and class and adds it to the "students" list.
• add_new_teacher(self, teacher_name, branch): A method used to add a new teacher to the school. It takes the teacher's name and major and adds it to the "teachers" dictionary.
• view_student_list(self): A method used to display the list of students enrolled in the school. List student names and classes.
• view_teacher_list(self): A method used to display the list of teachers working in the school. List teacher names and majors.

Question3: Create a "Shape" class. Under this class, create two subclasses, the "Rectangle" and "Square" classes.

• Let the "shape" class have two properties: "width" and "height."
• Let the "Rectangle" class inherit from the "Shape" class and add an additional "calculate_area()" method.
• Let the "Square" class inherit from the "Shape" class and calculate the area of ​​the square using the same "area_calculate()" method.
• Create a "Rectangle" and a "Square" instance, determine the width and height of each, and calculate the area of ​​each and print the results.

Question4: Create a "Vehicle" class in Python. Make sure this class has the following properties:

Features:

• "make" (Brand of vehicle)
• "model" (Vehicle model)
• "year" (Year of manufacture of the vehicle)

Create a "Vehicle" class and create two derived subclasses, "Off-Road Vehicle" (SUV) and "SportsCar" classes.

• The "Off-Road Vehicle" class inherits from the "Vehicle" class and adds an additional "four_wheel drive" feature.
• Let the "SportCar" class inherit from the "Vehicle" class and add a "max_speed" property.

Create an instance of each class, determine its properties, and write a program to display these properties.

Question5: Create a "Customer" class and an "Account" class. Let the "Account" class inherit from the "Customer" class and represent a customer's bank account information.

Customer Class Features:

• "name" (customer name)
• "surname" (customer surname)
• "tc_identification" (customer TR ID number)
• "phone" (customer phone number)

Account Class Properties:

• "customer" (a Customer object)
• "account_number" (account number)
• "balance" (account balance)

Customer Class Method:

• "display_information()": Displays the customer's name, surname, TR ID number and telephone number.

Account Class Methods:

• "deposit(self, amount)": A method that deposits a certain amount of money into the account.
• "money_check(self, amount)": A method that withdraws a certain amount of money from the account. However, if there is not enough balance in the account, the transaction should not occur and a message should be displayed.
• "display_balance()": A method that displays the account balance.

Create these two classes, then create a Customer object and an Account object, add the customer information to the Account object, and perform account operations and view the results.

Mini Project

📚 Library Management System

A simple Library Management System written in Python.
It allows users to borrow and return books, manage accounts, and store data in a JSON file so the system continues from where it left off.

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🚀 Features

• User login & account creation
• Borrow and return books
• View all available books
• Track borrowed books
• Data persistence with JSON (save & load)

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🏗️ Class Design

Book (base class)

Attributes

• title
• author
• publication_year
• is_borrowed
• borrowed_by

Methods

• show_info()
• borrow(user)
• return_book()
• to_dict()

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Novel (inherits Book)

• Additional attribute: genre

Magazine (inherits Book)

• Additional attribute: issue

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User

Attributes

• name
• password
• borrowed_books

Methods

• borrow_book(book)
• return_book(book)
• list_borrowed_books()
• to_dict()

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Library

Attributes

• name
• books
• users

Methods

• add_book(book)
• add_user(user)
• show_all_books()
• login(name, password)
• save(file) → saves all data to JSON
• load(file) → loads data from JSON and restores relationships

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📋 Program Flow

1. On startup, a login screen is shown.
2. The user can log in or create a new account.
3. Menu options:

• 1 - List all books
• 2 - Borrow a book
• 3 - Return a book
• 4 - Show my borrowed books
• 5 - Save and exit

4. On exit, all data is saved to a JSON file.
5. On the next run, the system loads the saved state and continues.

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💾 Persistence

• All books, users, and borrowing states are stored in a JSON file.
• When the program restarts, the data is reloaded so nothing is lost.

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HackerRank Questions

• Inheritance: https://www.hackerrank.com/challenges/inheritance/problem

• Classes: Dealing with Complex Numbers: https://www.hackerrank.com/challenges/class-1-dealing-with-complex-numbers/problem