Python Coding challenge - Day 1071| What is the output of the following Python Code?

 

Code Explanation:

1. Defining Class A

class A:

Explanation:

This line creates a class named A.

A class is a blueprint used to create objects (instances).

2. Defining Method f

def f(self):

    return 1

Explanation:

A method named f is defined inside class A.

self refers to the current object (instance) of the class.

The method simply returns the value 1 when called.

So the method behavior is:

f(self) → returns 1

3. Creating an Object

a = A()

Explanation:

This creates an instance (object) a of class A.

Now the object a can access the method f.

Example:

a.f()

4. Print Statement

print(A.f(a), a.f())

This statement contains two function calls.

5. First Call: A.f(a)

Explanation:

Here we call method f using the class name.

When calling a method from the class, we must manually pass the object as the argument.

So Python executes:

A.f(a)

Which is equivalent to:

f(self=a)

Inside the function:

return 1

So:

A.f(a) → 1

6. Second Call: a.f()

Explanation:

Here we call the method using the object a.

Python automatically passes the object as self.

Internally Python converts:

a.f()

into:

A.f(a)

So the method runs and returns:

1

Thus:

a.f() → 1

7. Final Output

The print statement prints both values:

print(1, 1)

So the output is:

1 1

400 Days Python Coding Challenges with Explanation