Python Coding challenge - Day 998| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Printer Class

class Printer:

A class named Printer is defined.

2. Defining the __call__ Method

    def __call__(self):

        return "print"

__call__ makes objects of Printer callable.

When a Printer object is called like a function, it returns the string "print".

Example:

Printer()() → "print"

3. Defining the Job Class

class Job:

A class named Job is defined.

4. Creating a Class Attribute with a Callable Object

    task = Printer()

task is a class attribute of Job.

It stores an instance of Printer, not the class itself.

Since Printer objects are callable, task can be called like a function.

5. Creating an Instance of Job

j = Job()

An object j of class Job is created.

j does not have its own task attribute.

Python will look for task on the class Job.

6. Accessing and Calling j.task()

print(j.task())

Step-by-step:

Python looks for task on instance j → not found

Python finds task on class Job

task is a Printer object

Since it has __call__, Python executes:

j.task.__call__()

__call__ returns "print"

7. Final Output

print

Final Answer

✔ Output:

print

400 Days Python Coding Challenges with Explanation