Python Coding challenge - Day 685| What is the output of the following Python Code?

 

Code Explanation:

1. Importing reduce function

from functools import reduce

The reduce function is imported from Python’s built-in functools module.

reduce() applies a given function cumulatively to the items of an iterable (like a list), reducing it to a single value.

2. Importing operator module

import operator

The operator module provides function equivalents for standard operators.

Example: operator.mul(a, b) is the same as a * b.

3. Defining the list

nums = [1,2,3,4]

A list nums is created containing integers [1, 2, 3, 4].

This will be the sequence on which we apply multiplication.

4. Using reduce with operator.mul

res = reduce(operator.mul, nums)

reduce(function, iterable) takes:

function: a function that takes two arguments.

iterable: the sequence to process.

Here:

operator.mul is the function (performs multiplication: a * b).

nums is the iterable [1,2,3,4].

How it works step by step:

First applies 1 * 2 = 2

Then 2 * 3 = 6

Then 6 * 4 = 24

So the final result is 24.

5. Printing the result

print(res)

Prints the reduced result 24 to the console.

Final Output:

24

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