Python's functools module includes the reduce() function, which is used for applying a function cumulatively to the items of an iterable, from left to right, to reduce the iterable to a single value. It's considered "special" because it's not a built-in function like map or filter and requires explicit importing from functools. The reduce() function takes two arguments:
A function of two arguments (the accumulator and the next element) An iterable (e.g., list, tuple)
It applies the function to the first two items in the iterable, then applies the function to the result and the next item, and so on, until a single result is obtained.
