Python Coding challenge - Day 837| What is the output of the following Python Code?

Code Explanation:

1) Define the class

class Convert:

This starts the definition of a class named Convert.

A class groups related data (attributes) and behavior (methods).

2) Class attribute factor

    factor = 1.5

factor is a class variable (shared by the class and all its instances).

It’s set to the floating-point value 1.5.

You can access it as Convert.factor or cls.factor inside classmethods.

3) Mark the next method as a class method

    @classmethod

The @classmethod decorator makes the following method receive the class itself as the first argument (conventionally named cls) instead of an instance (self).

Class methods are used when a method needs to read/modify class state.

4) Define the apply class method

    def apply(cls, x):

        return x * cls.factor

apply takes two parameters: cls (the class object) and x (a value to process).

Inside the method, cls.factor looks up the class attribute factor.

The method returns the product of x and the class factor (i.e., x * 1.5).

5) Call the class method and convert to int

print(int(Convert.apply(12)))

Convert.apply(12) calls the class method with x = 12.

Calculation: 12 * 1.5 = 18.0.

int(...) converts the floating result 18.0 to the integer 18.

print(...) outputs that integer.

Final output

18

 

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