Python Coding challenge - Day 771| What is the output of the following Python Code?

 Code Explanation:

1. Importing the reduce Function

from functools import reduce

reduce() is a function from the functools module.

It applies a function cumulatively to the items of a sequence (like a list), reducing it to a single value.

Example: reduce(lambda x, y: x + y, [1, 2, 3]) → (((1+2)+3)) = 6

2. Creating a List of Numbers

nums = [1, 2, 3, 4]

A list named nums is created with the elements [1, 2, 3, 4].

3. Calculating Product of All Elements

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

The lambda function multiplies two numbers: lambda x, y: x * y

reduce() applies this repeatedly:

Step 1: 1 × 2 = 2

Step 2: 2 × 3 = 6

Step 3: 6 × 4 = 24

So, prod = 24

4. Calculating Sum with an Initial Value

s = reduce(lambda x, y: x + y, nums, 5)

Here, reduce() starts with the initial value 5.

Then it adds all elements of nums one by one:

Step 1: 5 + 1 = 6

Step 2: 6 + 2 = 8

Step 3: 8 + 3 = 11

Step 4: 11 + 4 = 15

So, s = 15

5. Printing the Results

print(prod, s)

Prints both omputed values:

24 15

Final Output

24 15

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