PCAP Python OOP Concepts Quiz

1. Which method is used to represent an object as a string?

__str__

__string__

__repr__

__format__

2. What is the main advantage of using OOP principles in Python?

Code reusability, modularity, and maintainability

Faster execution speed

Reduced memory usage

Easier debugging of errors

3. Which dunder method defines the behavior of the + operator for a class?

__add__

__plus__

__sum__

__operator__

4. What is the difference between @staticmethod and @classmethod?

Static methods don't receive class or instance; class methods receive the class

They are the same thing

Static methods are faster

Class methods can only modify global variables

5. How do you create a static method in Python?

Using the @staticmethod decorator

Using the 'static' keyword

Defining a method outside the class

Using the @classmethod decorator

6. What is the Method Resolution Order (MRO) in Python?

The order in which Python looks for methods and attributes in a hierarchy

A list of all methods in a class

The order in which constructors are called

A technique to optimize method performance

7. Multiple inheritance in Python allows a class to inherit from how many parent classes?

More than one parent class

Only one parent class

Maximum of two parent classes

Only abstract classes

8. What is an abstract base class (ABC)?

A class that cannot be instantiated and defines methods for subclasses

A class that inherits from multiple parents

A class with no methods

A class that only contains private attributes

9. How do you call a parent class method from a child class?

Using super() function

Using parent.method_name()

Using self.method_name()

Using @override decorator

10. What is a class variable?

A variable shared by all instances of a class

A variable that only exists in one instance

A variable defined inside a method

A variable imported from another module

11. What is the primary purpose of a class in Python?

To define a blueprint for creating objects with attributes and methods

To store global variables

To import external libraries

To execute code immediately upon definition

12. What is the purpose of a property decorator (@property) in Python?

To allow controlled access to class attributes via getter/setter methods

To make an attribute read-only

To create class variables

To define static methods

13. How do you create a private attribute in Python?

Prefix the attribute name with double underscores (__)

Use the 'private' keyword

Declare it outside the class

Use the 'protected' keyword

14. What does encapsulation mean in OOP?

Bundling data and methods within a class while restricting direct access

Making all class attributes public

Creating classes inside functions

Storing objects in a list

15. Which of the following is an example of method overriding?

A child class redefining a method from the parent class

Creating two methods with the same name in one class

Using the same method name in different modules

Calling a parent method multiple times

16. What is polymorphism in the context of OOP?

The ability of objects to take multiple forms or for methods to behave differently

Creating multiple copies of the same class

Storing multiple data types in one variable

Inheriting from multiple unrelated classes

17. Which keyword is used to inherit from a parent class in Python?

Specified in parentheses after the class name

Using the 'extends' keyword

Using the 'inherit' keyword

Using the 'parent' keyword

18. What is inheritance in OOP?

A mechanism to create a new class from an existing class

A way to copy code between functions

A method to store data in memory

A technique to delete objects

19. In Python, what does 'self' represent in a class method?

The current instance of the class

A global variable

The class itself

An external object

20. Which special method is automatically called when an object is created?

__init__

__create__

__new__

__start__

PCAP Python Object Oriented Programming Quiz