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Try YTGrowAI FreeTop 100 Python OOP MCQs for Coding Exams (2026)
OOPs (Object-Oriented Programming) means writing code using objects and classes. There are four pillars of OOP: inheritance (reusing properties of a parent class), polymorphism (one interface, multiple behaviours), encapsulation (hiding data inside classes), and abstraction (showing only essential details).
Python Object-Oriented Programming helps us write clean, reusable, and scalable code using these pillars. In this article, I have compiled 100 Python OOP MCQs to help you practice different concepts related to OOP and prepare for interviews and coding exams in 2026.
100 Python OOP MCQs with Answers
Go through each Python OOP MCQ one by one and try to answer it based on your own knowledge. If you get stuck anywhere, remember we are in the AI era, just copy the MCQ and ask an AI tool to “explain the concept behind this question.” This way, you will understand the logic and remember it more easily.
Q1. Which keyword is used to define a new class in Python?
A. class
B. def
C. struct
D. object
Show Answer
Answer: A
The class keyword is used to create a blueprint for objects in Python.
Q2. What is the correct syntax to create an object of a class named “Student”?
A. Student obj = new Student();
B. obj = Student();
C. obj = new Student();
D. create obj = Student();
Show Answer
Answer: B
In Python, objects are created by calling the class name followed by parentheses.
Q3. Which method is automatically called when a new object is created?
A. __new__
B. __init__
C. __create__
D. __start__
Show Answer
Answer: B
The __init__ method acts as a constructor to initialize the object’s attributes.
Q4. What does the ‘self’ keyword represent in a Python class method?
A. The parent class
B. The current instance of the class
C. A static variable
D. A global variable
Show Answer
Answer: Bself refers to the specific object instance calling the method.
Q5. Which of the following is a correct convention for naming a private attribute in a Python class?
A. __name
B. name__
C. _name
D. Name
Show Answer
Answer: A
Prefixing an attribute with double underscores __ invokes name mangling to make it private.
Q6. Which type of inheritance occurs when a child class inherits from multiple parent classes?
A. Single Inheritance
B. Multilevel Inheritance
C. Multiple Inheritance
D. Hierarchical Inheritance
Show Answer
Answer: C
Multiple inheritance allows a class to derive features from more than one base class.
Q7. What is the output of the following code?
class Test:
def __init__(self):
self.x = 1
t = Test()
print(t.x)
Show Answer
Answer: 1
The attribute x is initialized to 1 in the constructor and accessed via the object.
Q8. Which method is used to access the parent class method from a child class in Python?
A. this.method()
B. super().method()
C. parent.method()
D. base.method()
Show Answer
Answer: B
The super() function returns a proxy object that allows access to methods of the parent class.
Q9. What is polymorphism in the context of Python OOPs?
A. Hiding data implementation
B. Ability to take various forms
C. Creating new classes
D. Binding data and functions
Show Answer
Answer: B
Polymorphism allows methods to do different things based on the object it is acting upon.
Q10. Which decorator is used to define a static method inside a class?
A. @staticmethod
B. @static
C. @classstaticmethod
D. @staticmethoddef
Show Answer
Answer: A
The @staticmethod decorator defines a method that does not receive an implicit first argument.
Q11. What does encapsulation refer to in Python?
A. Creating multiple objects
B. Bundling data and methods that work on the data
C. Inheriting properties
D. Overloading operators
Show Answer
Answer: B
Encapsulation is the concept of wrapping data (variables) and code (methods) together as a single unit.
Q12. Which function is used to check if an object is an instance of a particular class?
A. checkinstance()
B. isinstance()
C. typeof()
D. instance()
Show Answer
Answer: B
The isinstance() function returns True if the object belongs to the specified class.
Q13. What is the result of Method Resolution Order (MRO) in Python?
A. Order in which methods are deleted
B. Order in which base classes are searched for a method
C. Order in which objects are created
D. Order in which variables are assigned
Show Answer
Answer: B
MRO defines the order in which the interpreter looks for a method in a hierarchy of classes.
Q14. How do you define a class method in Python?
A. Using @classmethod decorator and cls parameter
B. Using @class decorator
C. Using self parameter
D. Using static keyword
Show Answer
Answer: A
Class methods take cls as the first parameter and are marked with the @classmethod decorator.
Q15. Which special method is used to overload the ‘+’ operator for a custom class?
A. __add__
B. __sum__
C. __plus__
D. __increment__
Show Answer
Answer: A
The __add__ magic method enables the use of the + operator for objects of the class.
Q16. What is abstraction in Python OOPs?
A. Hiding complex implementation details
B. Creating multiple instances
C. Copying objects
D. Deleting objects
Show Answer
Answer: A
Abstraction involves hiding the complex reality while exposing only the necessary parts.
Q17. Which module is used to create Abstract Base Classes (ABCs) in Python?
A. abc
B. abstract
C. interface
D. abc_module