POC Object-Oriented Programming in Python 3

Question 1

What is polymorphism in the context of Python OOP?

Accepted Answer

The ability of different objects to respond to the same method call in different ways

Answer

Polymorphism allows objects of different types to be treated through a common interface, each responding according to its own implementation.

Question 2

Which of the following is an example of duck typing in Python?

Accepted Answer

Calling a method on an object regardless of its class, trusting it has that method

Answer

Duck typing means Python calls a method on any object that has it, without checking the object's actual type first.

Question 3

What is the output of calling `type(42)`?

Accepted Answer

Answer

`type(42)` returns `<class 'int'>` because 42 is an integer object in Python.

Question 4

What does the `@staticmethod` decorator do?

Accepted Answer

Defines a method that does not receive the instance or class as an implicit first argument

Answer

A static method doesn't receive `self` or `cls`; it behaves like a regular function scoped inside the class.

Question 5

Which method is called when an object is about to be garbage collected?

Accepted Answer

__del__

Answer

`__del__` is the destructor method, called when the object's reference count drops to zero.

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