Python for Everybody: The Ultimate Python 3 Bootcamp - Dunder Methods

The video tutorial introduces dunder methods in Python, focusing on __init__, __str__, and __len__. It demonstrates creating a book class, using __str__ for string representation, and calculating book length with __len__. The tutorial also explores other dunder methods available in Python, highlighting their uses and applications.

What is the primary purpose of the __init__ method in a Python class?

• To initialize the class attributes

• To delete the class instance

• To print the class name

• To calculate the length of the class

In the Book class example, what does the __str__ method help achieve?

• It deletes the book instance

• It provides a string representation of the book

• It calculates the number of pages

• It initializes the book's content

How does the __len__ method in the Book class example determine the length?

• By measuring the title length

• By counting the number of words in the content

• By calculating the memory size

• By counting the number of pages

Which dunder method is used to convert a class into a dictionary?

• __str__

• __dict__

• __len__

• __init__

What is a common use case for the __del__ method?

• To initialize class attributes

• To provide a string representation

• To free up memory quickly

• To calculate the length of an object

Which dunder method is often used in frameworks like Django?

• __class__

• __str__

• __del__

• __init__

What is the best practice regarding the use of the __repr__ method?

• It should be used for debugging

• It should be used to initialize objects

• It should be avoided

• It should be used to delete objects