Parent and child classes in Python - Mini Project: Build & Apply

Parent and Child Classes

📖 Scenario: Imagine you are creating a simple program to manage vehicles. You want to have a general vehicle type and a specific type for cars.

🎯 Goal: You will create a parent class called Vehicle and a child class called Car that inherits from Vehicle. You will then create a car object and display its details.

📋 What You'll Learn

Create a parent class named Vehicle with an __init__ method that sets make and model attributes.

Create a child class named Car that inherits from Vehicle and adds an attribute year.

Create an instance of Car with specific values for make, model, and year.

Print the car's details using the attributes.

💡 Why This Matters

🌍 Real World

Understanding parent and child classes helps organize code for things like vehicles, animals, or employees where many share common traits but also have unique features.

💼 Career

Inheritance is a key concept in many programming jobs to write clean, reusable, and organized code.

1

Create the parent class Vehicle

Create a parent class called Vehicle with an __init__ method that takes make and model as parameters and sets them as attributes.

Python

# Create the Vehicle class with __init__ method
# Your code here

Need a hint?

Use class Vehicle: to start the class. Inside, define def __init__(self, make, model): and set self.make = make and self.model = model.

2

Create the child class Car

Create a child class called Car that inherits from Vehicle. Add an __init__ method that takes make, model, and year as parameters. Call the parent __init__ method for make and model, and set self.year = year.

Python

class Vehicle:
    def __init__(self, make, model):
        self.make = make
        self.model = model

# Create the Car class inheriting from Vehicle
# Your code here

Need a hint?

Use class Car(Vehicle): to inherit. Inside __init__, call super().__init__(make, model) and then set self.year = year.

3

Create a Car object

Create an object called my_car from the Car class with make as 'Toyota', model as 'Corolla', and year as 2020.

Python

class Vehicle:
    def __init__(self, make, model):
        self.make = make
        self.model = model

class Car(Vehicle):
    def __init__(self, make, model, year):
        super().__init__(make, model)
        self.year = year

# Create my_car object with make 'Toyota', model 'Corolla', year 2020
# Your code here

Need a hint?

Create the object by calling Car('Toyota', 'Corolla', 2020) and assign it to my_car.

4

Print the car details

Print the details of my_car in this exact format: "Toyota Corolla 2020" using the attributes make, model, and year.

Python

class Vehicle:
    def __init__(self, make, model):
        self.make = make
        self.model = model

class Car(Vehicle):
    def __init__(self, make, model, year):
        super().__init__(make, model)
        self.year = year

my_car = Car('Toyota', 'Corolla', 2020)

# Print the car details in the format: "Toyota Corolla 2020"
# Your code here

Need a hint?

Use print(f"{my_car.make} {my_car.model} {my_car.year}") to display the details.