Python Coding challenge - Day 917| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition Begins

class Alpha:

A class named Alpha is being defined.

It will contain one method called run().

2. Defining the run() Method

    def run(self):

        print("A", end="")

        return self

What happens inside?

print("A", end="")

Prints the letter A

end="" ensures no new line or space is added.

So the printed output appears continuously.

return self

Returns the same object

This allows method chaining

Meaning you can call another method directly on the result.

So, calling run() repeatedly prints "A" repeatedly.

3. Creating an Object

x = Alpha()

x becomes an object (instance) of the class Alpha.

Now we can call x.run().

4. First run() Call

y = x.run()

What happens?

x.run() executes:

prints "A"

returns x

The returned object is stored into variable y

So now:

x and y both refer to the same object

After this line, output so far:

A

(printed without newline)

5. Chaining More Calls

y.run().run()

Break it down:

First part: y.run()

prints "A"

returns y again (same object)

Second call: .run()

prints "A"

So two more "A" characters are printed.

6. Final Output

Total printed characters:

First x.run() → "A"

First y.run() → "A"

Second y.run() → "A"

So the final output is:

AAA

All on one line.

Final Result

Output:

AAA

500 Days Python Coding Challenges with Explanation