Method overriding behavior in Python - Mini Project: Build & Apply

Method overriding behavior

📖 Scenario: Imagine you are creating a simple program to describe different types of vehicles. Each vehicle can make a sound, but different vehicles make different sounds.

🎯 Goal: You will build a program that shows how a child class can change the behavior of a method it inherits from a parent class. This is called method overriding.

📋 What You'll Learn

Create a parent class called Vehicle with a method make_sound that prints "Generic vehicle sound".

Create a child class called Car that inherits from Vehicle.

Override the make_sound method in Car to print "Vroom!" instead.

Create an object of Vehicle and an object of Car and call their make_sound methods.

💡 Why This Matters

🌍 Real World

Understanding method overriding helps when designing programs with different types of objects that share common features but behave differently.

💼 Career

Method overriding is a key concept in object-oriented programming used in software development to create flexible and reusable code.

1

Create the parent class Vehicle

Create a class called Vehicle with a method make_sound that prints exactly "Generic vehicle sound".

Python

# Your code here

Need a hint?

Use class Vehicle: to start the class and define make_sound with def make_sound(self):.

2

Create the child class Car

Create a class called Car that inherits from Vehicle. Do not add any methods yet.

Python

class Vehicle:
    def make_sound(self):
        print("Generic vehicle sound")

# Your code here

Need a hint?

Use class Car(Vehicle): to inherit from Vehicle and add pass inside to keep it empty for now.

3

Override the make_sound method in Car

In the Car class, override the make_sound method to print exactly "Vroom!".

Python

class Vehicle:
    def make_sound(self):
        print("Generic vehicle sound")

class Car(Vehicle):
    # Your code here

Need a hint?

Define make_sound inside Car and print "Vroom!" to replace the parent method.

4

Create objects and call make_sound

Create an object called vehicle of class Vehicle and an object called car of class Car. Then call make_sound on both objects.

Python

class Vehicle:
    def make_sound(self):
        print("Generic vehicle sound")

class Car(Vehicle):
    def make_sound(self):
        print("Vroom!")

# Your code here

Need a hint?

Create objects with vehicle = Vehicle() and car = Car(). Then call make_sound() on each.