POC Object-Oriented Programming in Python 2

Question 1

What is the purpose of the `__str__` method in a Python class?

Accepted Answer

To return a human-readable string representation of an object

Answer

To compare two objects for equality

Answer

To initialize object attributes

Answer

To delete an object from memory

Question 2

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

Accepted Answer

Parentheses with the parent class name in the class definition

Answer

extends

Answer

implements

Answer

inherits

Question 3

What does `super().__init__()` do in a child class?

Accepted Answer

Calls the parent class's `__init__` method to initialize inherited attributes

Answer

Creates a new parent class instance

Answer

Overrides the parent constructor entirely

Answer

Deletes the child class constructor

Question 4

Which of the following best describes method overriding?

Accepted Answer

Defining a method with the same name in a child class to replace the parent's implementation

Answer

Adding extra parameters to an inherited method

Answer

Calling a parent method from inside the child class

Answer

Creating two methods with the same name in the same class

Question 5

What will `isinstance(obj, MyClass)` return if `obj` is an instance of a subclass of `MyClass`?

Accepted Answer

True

Answer

False

Answer

None

Answer

It raises a TypeError

Question 6

Which access modifier convention in Python indicates a method is intended for internal use only?

Accepted Answer

A single underscore prefix

Answer

A double underscore prefix (name mangling)

Answer

The `private` keyword

Answer

Enclosing the name in square brackets

Question 7

What is name mangling in Python?

Accepted Answer

Transforming `__attr` to `_ClassName__attr` to avoid name conflicts in subclasses

Answer

Automatically renaming variables during garbage collection

Answer

Encrypting attribute names for security

Answer

Converting attribute names to lowercase