summations

Library to enumerate all natural number lists with a target sum.

Purpose

This library allows programmers to create a generator for all the lists of natural numbers that add up to a target sum.

Package Installation and Usage

The package is available on PyPI:

python -m pip install summations

The library can be imported in the usual way:

import summations
from summations import summations

Testing

The library comes with a number of tests:

nosetests

Examples

An example of usage is provided below:

>>> from summations import summations
>>> sorted(list(sum_len(5, 3)))
[(0, 0, 5), (0, 1, 4), (0, 2, 3), (0, 3, 2), (0, 4, 1), (0, 5, 0),
 (1, 0, 4), (1, 1, 3), (1, 2, 2), (1, 3, 1), (1, 4, 0), (2, 0, 3),
 (2, 1, 2), (2, 2, 1), (2, 3, 0), (3, 0, 2), (3, 1, 1), (3, 2, 0),
 (4, 0, 1), (4, 1, 0), (5, 0, 0)]