The reduce() Function

What is reduce()?
The reduce() function from the functools module applies a function cumulatively to the items of an iterable, reducing the iterable to a single value.

Syntax

reduce(function, iterable)

To use reduce(), you need to import it from the functools module.

Example: Using reduce() to Sum a List

from functools import reduce

def add(x, y):
    return x + y

numbers = [1, 2, 3, 4, 5]
total_sum = reduce(add, numbers)

print(total_sum)

Output:

15

In this example, reduce() adds each number in the list to the next, resulting in the sum of all numbers.

Example: Using lambda with reduce()

from functools import reduce

numbers = [1, 2, 3, 4, 5]
total_sum = reduce(lambda x, y: x + y, numbers)

print(total_sum)

Output:

15

Using lambda with reduce() simplifies the function definition.

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