What are magic methods in python? (AI)

Question 1

What are magic methods in Python?

Answer 1

Standardized way to add built-in behavior to user-defined classes

Also known as dunder methods.

Question 2

Name a common use-case for magic methods related to string representation.

Answer 2

• __str__
• __repr__

__str__ is for end-users, while __repr__ is for developers.

Question 3

What magic method is used for object initialization?

Answer 3

__init__

This method is called when an instance of a class is created.

Question 4

Which magic methods control attribute access?

Answer 4

• __getattr__
• __setattr__
• __delattr__

These methods manage how attributes are accessed, assigned, and deleted.

Question 5

What magic method makes an instance callable?

Answer 5

__call__

Allows an instance to be called like a function.

Question 6

Which magic methods define comparison operators?

Answer 6

• __eq__
• __lt__

__eq__ defines equality (==), while __lt__ specifies less than (<).

Question 7

What magic methods are used for iteration?

Answer 7

• __iter__
• __next__

__iter__ returns an iterator, and __next__ retrieves the next item.

Question 8

Which magic methods are involved in context management?

Answer 8

• __enter__
• __exit__

__enter__ sets up the context, and __exit__ cleans it up.

Question 9

What magic methods handle numeric operations?

Answer 9

• __add__
• __sub__

__add__ is for addition (+), and __sub__ is for subtraction (-).