Python - Object-Oriented Programming - Public and Private

This video tutorial introduces the concept of encapsulation in object-oriented programming (OOP), using a TV example to illustrate how attributes and methods are bundled together and protected. It explains how encapsulation restricts direct access to attributes, preventing accidental modifications. The tutorial demonstrates how to define public and private attributes in Python, highlighting the use of single and double underscores to signal privacy. It concludes by discussing the limitations of making attributes private in Python and hints at using getter and setter methods for controlled access.

What is the primary purpose of encapsulation in object-oriented programming?

• To allow direct access to all attributes

• To make the code more colorful

• To hide the complexity and protect the data

• To increase the speed of the program

In the TV analogy, what role does the remote control play in encapsulation?

• It is a tool to repair the TV

• It acts as an interface to interact with the TV

• It symbolizes the TV's screen

• It represents the TV's power source

What is the significance of using a single underscore before an attribute name in Python?

• It automatically encrypts the attribute

• It makes the attribute public

• It is a convention to indicate the attribute is private

• It makes the attribute read-only

What is the initial status of the TV in the Python class example?

• On

• Off

• Standby

• Muted

What is the purpose of the __str__ method in the TV class?

• To initialize the TV object

• To print a formatted string representation of the TV object

• To delete the TV object

• To change the TV's channel

What is the initial volume set to in the TV class example?

• 0

• 25

• 100

• 50

What happens when you use a double underscore before an attribute name in Python?

• The attribute becomes a global variable

• The attribute is deleted

• The attribute name is mangled to prevent normal access

• The attribute is automatically documented

Why can't attributes be made absolutely private in Python?

• Python does not support encapsulation

• Python uses name mangling instead of true private attributes

• Python automatically makes all attributes public

• Python requires a special library for private attributes

What is a potential issue with allowing direct access to attributes in a class?

• It makes the code run faster

• It can lead to invalid values being assigned

• It simplifies the code

• It enhances security

What will the next video discuss after encapsulation?

• Abstract classes

• Getter and setter methods

• Polymorphism

• Inheritance