Python Coding challenge - Day 898| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class Box:

This line defines a class named Box.

A class acts as a template for creating objects.

2. Creating the Constructor Method

def __init__(self, n):

This is the constructor method.

It runs automatically when a new object is created.

self → Refers to the current object

n → A value passed while creating the object

3. Initializing an Instance Variable

self.n = n

This creates an instance variable n.

The value passed during object creation is stored in self.n.

After this:

self.n → 5

4. Defining the __repr__ Method

def __repr__(self):

__repr__ is a special method in Python.

It defines how an object should be displayed when printed.

5. Returning a Formatted String

return f"Box({self.n})"

This returns a formatted string representation of the object.

self.n is inserted into the string using an f-string.

This means:

repr(b) → "Box(5)"

6. Creating an Object

b = Box(5)

This creates an object b of the class Box.

The value 5 is passed to the constructor and stored in b.n.

7. Printing the Object

print(b)

When print(b) is executed, Python automatically calls:

b.__repr__()

Which returns:

"Box(5)"

So the final output is:

Box(5)

Final Output

Box(5)

700 Days Python Coding Challenges with Explanation