Python Coding challenge - Day 753| 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 given operation cumulatively to all elements in a list.

Example: reduce(lambda x, y: x * y, [2, 3, 4]) → ((2*3)*4) = 24.

2. Define a list of numbers

nums = [2, 3, 4, 5]

A simple list of integers.

Contents: [2, 3, 4, 5].

3. Calculate the product using reduce

product = reduce(lambda x, y: x * y, nums)

The lambda multiplies elements pair by pair.

Step-by-step:

(2 * 3) = 6

(6 * 4) = 24

(24 * 5) = 120

So, product = 120.

4. Remove an element from the list

nums.remove(3)

Removes the first occurrence of 3 from the list.

Now nums = [2, 4, 5].

5. Use reduce to calculate sum with initial value

s = reduce(lambda x, y: x + y, nums, 10)

Here 10 is the initial value.

Process:

Start = 10

(10 + 2) = 12

(12 + 4) = 16

(16 + 5) = 21

So, s = 21.

6. Print results

print(product, s)

Prints both values:

Output →

120 21

500 Days Python Coding Challenges with Explanation