Menu
Both have exact same documentation, and it seems to me that both stem from same source code in https://hg.python.org/cpython/file/Modules/_functoolsmodule.c.
However, I am not sure about it. I didn't find any other refernces in the source code of CPython. Can some one shed some more light on this here?
338
The reduce(fun,seq) function is used to apply a particular function passed in its argument to all of the list elements mentioned in the sequence passed along. This function is defined in “functools” module. Working : At first step, first two elements of sequence are picked and the result is obtained.
Python's reduce() was originally a built-in function (and still is in Python 2. x), but it was moved to functools. reduce() in Python 3.0. This decision was based on some possible performance and readability issues.
The functools module, part of Python's standard Library, provides useful features that make it easier to work with high order functions (a function that returns a function or takes another function as an argument ).
reduce() works differently than map() and filter() . It does not return a new list based on the function and iterable we've passed. Instead, it returns a single value. Also, in Python 3 reduce() isn't a built-in function anymore, and it can be found in the functools module.
Per the documentation of functools.reduce in Python 2:
This is the same function as reduce(). It is made available in this module to allow writing code more forward-compatible with Python 3.
82
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
