Python - Object-Oriented Programming - Make Your Objects Comparable.

This video tutorial explains the concept of magic methods in Python, focusing on how they are used internally by classes. It demonstrates creating a student class with attributes and methods to add courses and calculate averages. The tutorial further explores defining comparison methods to make objects comparable, ensuring type safety by checking object types, and handling errors effectively.

What are Dunder methods in Python primarily used for?

• To manage database connections

• To handle internal operations of a class

• To directly invoke methods from outside the class

• To create graphical user interfaces

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

• To compare two objects

• To provide a string representation of an object

• To add new methods to a class

• To initialize object attributes

Why can't custom objects be compared by default in Python?

• Python does not support object comparison

• Custom objects lack predefined comparison logic

• Comparison requires a database connection

• Objects are always equal by default

Which dunder method is used to define the greater than operator?

• __eq__

• __lt__

• __gt__

• __ne__

What is the return type of comparison operations in Python?

• Integer

• Float

• String

• Boolean

What is the purpose of the __le__ method in Python?

• To define the less than or equal to operator

• To define the less than operator

• To define the greater than operator

• To define the equal to operator

How can you ensure that two objects being compared are of the same class?

• By using isinstance function

• By comparing their memory addresses

• By converting them to strings

• By checking the object ID

What happens if you try to compare a Student object with an integer?

• The comparison returns true

• The comparison returns false

• The integer is converted to a Student object

• An error is raised

What should be done if a comparison method receives an incompatible type?

• Return a default value

• Ignore the comparison

• Convert the type to a string

• Raise a ValueError

Which method is used to check if an object is an instance of a specific class?

• type()

• typeof()

• isinstance()

• classof()