Python Object-Oriented Programming Basics 2

Question 1

What does the `super()` function do in Python?

Accepted Answer

Calls a method from the parent class

Answer

`super()` returns a proxy object that delegates method calls to a parent class, enabling cooperative multiple inheritance.

Question 2

Which of the following correctly defines a class method in Python?

Accepted Answer

@classmethod
def method(cls):

Answer

Class methods are decorated with `@classmethod` and receive the class itself as the first argument, conventionally named `cls`.

Question 3

What is the output of `type(42)` in Python?

Accepted Answer

Answer

`type()` returns the class object of the argument, displayed as `<class 'int'>` for integers.

Question 4

Which magic method is called when an object is created?

Accepted Answer

__init__

Answer

`__init__` is called after the object is created to initialize its attributes; `__new__` allocates it but is rarely overridden.

Question 5

What does name mangling do in Python (e.g., `__attr`)?

Accepted Answer

Renames the attribute to `_ClassName__attr`

Answer

Python mangles `__attr` to `_ClassName__attr` to reduce accidental override in subclasses, but it is still accessible.

Python Practice Test