Python Coding challenge - Day 987 | What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class Engine:

A class named Engine is defined.

2. Defining the Method start

    def start(self):

        self.start = "running"

        return "init"

This method does two important things:

Creates an instance attribute named start

self.start = "running"

This overwrites the method name on the instance.

After this line, start on the object is no longer a method.

Returns a string

return "init"

3. Creating an Object

e = Engine()

An instance e of class Engine is created.

At this point:

e.start → method (from class)

4. First Call: e.start()

e.start()

Step-by-step:

Python finds start on the class.

Calls the method.

Inside the method:

self.start = "running" creates an instance attribute

The instance attribute shadows the method.

The method returns "init".

Result of first call:

"init"

5. Second Access: e.start

e.start

Python looks for start on the instance.

Finds the instance attribute:

e.start == "running"

The method on the class is no longer used.

6. Printing Both Values

print(e.start(), e.start)

First e.start() → "init"

Second e.start → "running"

7. Final Output

init running

Final Answer

✔ Output:

init running

400 Days Python Coding Challenges with Explanation