This Object-Oriented Programming (OOP) exercise aims to help you to learn and practice OOP concepts. All questions are tested on Python 3.
Python Object-oriented programming (OOP) is based on the concept of “objects,” which can contain data and code: data in the form of instance variables (often known as attributes or properties), and code, in the form method. I.e., Using OOP, we encapsulate related properties and behaviors into individual objects.
What is included in this Python OOP exercise?
This OOP classes and objects exercise includes 8 different programs, questions, and challenges. All solutions are tested on Python 3.
This OOP exercise covers questions on the following topics:
- Class and Object creation
- Instance variables and Methods, and Class level attributes
- Model systems with class inheritance i.e., inherit From Other Classes
- Parent Classes and Child Classes
- Extend the functionality of Parent Classes using Child class
- Object checking
When you complete each question, you get more familiar with the Python OOP. Let us know if you have any alternative solutions. It will help other developers.
Use Online Code Editor to solve exercise questions.
Refer:
- Guide on Python OOP
- Inheritance in Python
Table of contents
- OOP Exercise 1: Create a Class with instance attributes
- OOP Exercise 2: Create a Vehicle class without any variables and methods
- OOP Exercise 3: Create a child class Bus that will inherit all of the variables and methods of the Vehicle class
- OOP Exercise 4: Class Inheritance
- OOP Exercise 5: Define a property that must have the same value for every class instance (object)
- OOP Exercise 6: Class Inheritance
- OOP Exercise 7: Check type of an object
- OOP Exercise 8: Determine if School_bus is also an instance of the Vehicle class
OOP Exercise 1: Create a Class with instance attributes
Write a Python program to create a Vehicle class with max_speed
and mileage
instance attributes.
Refer:
Show Solution
OOP Exercise 2: Create a Vehicle class without any variables and methods
Show Solution
OOP Exercise 3: Create a child class Bus that will inherit all of the variables and methods of the Vehicle class
Given:
Create a Bus object that will inherit all of the variables and methods of the parent Vehicle class and display it.
Expected Output:
Vehicle Name: School Volvo Speed: 180 Mileage: 12
Refer: Inheritance in Python
Show Solution
OOP Exercise 4: Class Inheritance
Given:
Create a Bus class that inherits from the Vehicle class. Give the capacity argument of Bus.seating_capacity()
a default value of 50.
Use the following code for your parent Vehicle class.
Expected Output:
The seating capacity of a bus is 50 passengers
Refer:
Show Hint
- First, use method overriding.
- Next, use default method argument in the
seating_capacity()
method definition of a bus class.
Show Solution
OOP Exercise 5: Define a property that must have the same value for every class instance (object)
Define a class attribute”color” with a default value white. I.e., Every Vehicle should be white.
Use the following code for this exercise.
Expected Output:
Color: White, Vehicle name: School Volvo, Speed: 180, Mileage: 12 Color: White, Vehicle name: Audi Q5, Speed: 240, Mileage: 18
Refer: Class Variable in Python
Show Hint
Define a color
as a class variable in a Vehicle class
Show Solution
Variables created in .__init__()
are called instance variables. An instance variable’s value is specific to a particular instance of the class. For example, in the solution, All Vehicle objects have a name and a max_speed, but the name and max_speed variables’ values will vary depending on the Vehicle instance.
On the other hand, the class variable is shared between all class instances. You can define a class attribute by assigning a value to a variable name outside of .__init__()
.
OOP Exercise 6: Class Inheritance
Given:
Create a Bus child class that inherits from the Vehicle class. The default fare charge of any vehicle is seating capacity * 100. If Vehicle is Bus instance, we need to add an extra 10% on full fare as a maintenance charge. So total fare for bus instance will become the final amount = total fare + 10% of the total fare.
Note: The bus seating capacity is 50. so the final fare amount should be 5500. You need to override the fare()
method of a Vehicle class in Bus class.
Use the following code for your parent Vehicle class. We need to access the parent class from inside a method of a child class.
Expected Output:
Total Bus fare is: 5500.0
Show Solution
OOP Exercise 7: Check type of an object
Write a program to determine which class a given Bus object belongs to.
Given:
Show Hint
Use Python’s built-in function type()
.
Show Solution
OOP Exercise 8: Determine if School_bus is also an instance of the Vehicle class
Given: