Python Coding challenge - Day 706| What is the output of the following Python Code?

 

Code Explanation:

1) class A:

Defines a class named A.

It will have methods and attributes.

2) def __init__(self, x):

The constructor method of class A.

Called automatically when you create a new instance of A.

self._x = x → stores the argument x in an instance variable _x.

The underscore (_x) is just a convention to mean “internal/private” attribute.

3) @property

A decorator that converts the method below into a property.

This allows you to access it like an attribute (a.x) instead of calling it as a method (a.x()).

4) def x(self): return self._x * 2

Defines a property named x.

When you access a.x, Python runs this method.

It returns double the stored value (_x * 2).

5) a = A(5)

Creates an instance of A.

Calls __init__ with x=5.

Inside __init__, it sets self._x = 5.

6) print(a.x)

Accesses the property x.

This calls the x method behind the scenes.

Returns self._x * 2 = 5 * 2 = 10.

Prints 10.

Final Output

10

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