Python Coding challenge - Day 635| What is the output of the following Python Code?

Code Explanation:

1. Class Definition

class Descend:

Defines a new class named Descend.

In Python, a class is a blueprint for creating objects (instances).

2. Constructor Method

    def __init__(self, n):

        self.n = n

This is the constructor method: __init__.

It gets called automatically when you create a new Descend object.

n is a parameter passed during object creation.

self.n = n stores the value of n as an instance variable, so it can be used elsewhere in the class.

3. Iterable Method

    def __iter__(self):

        return (i for i in range(self.n, 0, -1))

This defines the __iter__() method, which makes the object iterable.

It returns a generator expression:

(i for i in range(self.n, 0, -1))

This generates values starting from self.n down to 1, decreasing by 1 each time.

For example, if n = 3, this will generate 3, 2, 1.

4. Create Object and Convert to List

print(list(Descend(3)))

Descend(3) creates an instance of the Descend class with n = 3.

list(...) attempts to convert the object into a list.

Because the class defines __iter__(), Python uses it to iterate through values 3, 2, 1.

So the output will be:

[3, 2, 1]

Final Output

[3, 2, 1]

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