Python Coding challenge - Day 761| What is the output of the following Python Code?

 

Code Explanation:

1. Importing the Library

from functools import reduce

The reduce function comes from the functools module.

It is used to repeatedly apply a function (like multiplication or addition) to elements of a sequence, reducing it to a single value.

2. Creating a List

nums = [1, 2, 3, 4]

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

3. Using reduce to Compute Product

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

reduce applies the lambda function x * y across the list.

Step by step:

1 * 2 = 2

2 * 3 = 6

6 * 4 = 24

Final value of product = 24.

4. Modifying the List

nums.append(5)

A new element 5 is added to the list.

Now nums = [1, 2, 3, 4, 5].

5. Using reduce to Compute Sum with Initial Value

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

Here, reduce adds up all elements in nums.

It starts with the initializer value = 10.

Step by step:

Start = 10

10 + 1 = 11

11 + 2 = 13

13 + 3 = 16

16 + 4 = 20

20 + 5 = 25

Final value of total = 25.

6. Printing Results

print(product, total)

product = 24

total = 25

Output:

24 25

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