Python Coding challenge - Day 382| What is the output of the following Python Code?

 

Step by Step Explanation:

def decorator(cls):

    cls.value = 42  # Adds a new attribute `value` to the class

    return cls  # Returns the modified class

Step 1: Define a Class Decorator

def decorator(cls):

This defines a function named decorator that takes a class (cls) as its parameter.

When applied, it will modify the class by adding new attributes or methods.

cls.value = 42

This adds a new attribute value to the class passed to the decorator.

Every class that uses @decorator will automatically have value = 42.

return cls

The modified class is returned.

This ensures that the original class remains functional but now has additional modifications.

@decorator  # Applying the decorator to the class

class Test:

    pass

Step 2: Apply the Decorator

@decorator

This applies the decorator function to the Test class.

Equivalent to manually writing:

class Test:

    pass

Test = decorator(Test)  # Modifies `Test` by adding `value = 42`When Test is passed into decorator(), it modifies Test by adding value = 42.

print(Test.value)  # Accessing the modified class attribute

Step 3: Print the New Attribute

Test.value

Since the decorator added value = 42, this now exists in the class.

print(Test.value) prints 42.

Final Output:

42