Python Coding challenge - Day 1023| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class Switch:

A class named Switch is defined.

2. Defining the Method flip

    def flip(self):

        self.flip = lambda: "OFF"

        return "ON"

This method does two important things:

🔹 a) Replaces Itself on the Instance

self.flip = lambda: "OFF"

Creates an instance attribute named flip.

This attribute overrides (shadows) the class method flip.

The new value is a lambda function that returns "OFF".

🔹 b) Returns a Value

return "ON"

The method returns the string "ON".

3. Creating an Object

s = Switch()

An instance s of class Switch is created.

At this moment:

s.flip → class method

4. First Call: s.flip()

s.flip()

Step-by-step:

Python looks for flip in s.__dict__ → ❌ not found.

Python finds flip in class Switch.

The method is executed.

Inside the method:

self.flip = lambda: "OFF" creates an instance attribute.

The method returns "ON".

After this call:

s.__dict__ == {'flip': <lambda>}

5. Second Call: s.flip()

s.flip()

Step-by-step:

Python looks for flip in s.__dict__ → ✅ found.

The instance attribute (lambda) is used.

The lambda function executes.

Returns "OFF".

6. Printing the Result

print(s.flip(), s.flip())

First s.flip() → "ON"

Second s.flip() → "OFF"

7. Final Output

ON OFF

✅ Final Answer

✔ Output:

ON OFF

400 Days Python Coding Challenges with Explanation