Python Coding challenge - Day 937| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class User:

A class named User is defined.

It represents a user object that will store an age value.

2. Constructor Method (__init__)

    def __init__(self):

        self._age = 20

__init__ runs automatically when a User object is created.

It creates an instance variable _age and sets it to 20.

The single underscore (_age) is a convention meaning “internal/private variable”.

3. Defining a Property Getter

    @property

    def age(self):

        return self._age

@property turns the method age() into a read-only attribute.

So instead of calling u.age(), you can write u.age.

It returns the value of _age.

4. Creating an Object

u = User()

A User object is created.

The constructor sets u._age = 20.

5. Accessing the Property

print(u.age)

u.age calls the property method age().

The method returns self._age, which is 20.

print prints that value.

6. Final Output

20

Final Answer

✔ Output:

20

✔ Reason:

The @property decorator allows age to be accessed like an attribute while actually calling a method that returns _age.

300 Days Python Coding Challenges with Explanation