Python Coding challenge - Day 821| What is the output of the following Python Code?

 

Code Explanation:

1) Import reduce from functools

from functools import reduce

reduce is a function that applies a binary function cumulatively to the items of an iterable, reducing the iterable to a single value.

Example behavior: reduce(f, [a, b, c]) computes f(f(a, b), c).

2) Import the operator module

import operator

operator provides function equivalents of Python operators (like add, mul, sub, etc.).

Using operator.mul is the same as using a function that multiplies two numbers.

3) Define the list of numbers

nums = [2, 3, 4]

A simple Python list with three integers: 2, 3, and 4.

This list is the input iterable that reduce will process.

4) Reduce the list by multiplying elements

result = reduce(operator.mul, nums)

reduce(operator.mul, nums) applies multiplication cumulatively across the list.

Step-by-step:

First it computes operator.mul(2, 3) → 6.

Then it computes operator.mul(6, 4) → 24.

So result is assigned the final product: 24.

5) Print result + 2

print(result + 2)

Adds 2 to the reduced value: 24 + 2 = 26.

Prints the final value to standard output.

Final output

26

700 Days Python Coding Challenges with Explanation