| Name | lagrange JSON |
| Version |
3.0.1
JSON |
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| home_page | None |
| Summary | Pure-Python implementation of Lagrange interpolation over finite fields."" |
| upload_time | 2025-01-01 01:33:14 |
| maintainer | None |
| docs_url | None |
| author | Andrei Lapets |
| requires_python | >=3.7 |
| license | MIT |
| keywords |
|
| VCS |
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| bugtrack_url |
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| requirements |
No requirements were recorded.
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|
========
lagrange
========
Pure-Python implementation of Lagrange interpolation over finite fields.
|pypi| |readthedocs| |actions| |coveralls|
.. |pypi| image:: https://badge.fury.io/py/lagrange.svg#
:target: https://badge.fury.io/py/lagrange
:alt: PyPI version and link.
.. |readthedocs| image:: https://readthedocs.org/projects/lagrange/badge/?version=latest
:target: https://lagrange.readthedocs.io/en/latest/?badge=latest
:alt: Read the Docs documentation status.
.. |actions| image:: https://github.com/lapets/lagrange/workflows/lint-test-cover-docs/badge.svg#
:target: https://github.com/lapets/lagrange/actions/workflows/lint-test-cover-docs.yml
:alt: GitHub Actions status.
.. |coveralls| image:: https://coveralls.io/repos/github/lapets/lagrange/badge.svg?branch=main
:target: https://coveralls.io/github/lapets/lagrange?branch=main
:alt: Coveralls test coverage summary.
Purpose
-------
This library provides a pure-Python implementation of the `Lagrange interpolation <https://en.wikipedia.org/wiki/Lagrange_polynomial>`__ algorithm over finite fields.
Installation and Usage
----------------------
This library is available as a `package on PyPI <https://pypi.org/project/lagrange>`__:
.. code-block:: bash
python -m pip install lagrange
The library can be imported in the usual way:
.. code-block:: python
from lagrange import lagrange
Examples
^^^^^^^^
Interpolation can be performed on collections of points represented in a variety of ways:
.. code-block:: python
>>> lagrange({1: 15, 2: 9, 3: 3}, 17)
4
>>> lagrange([(1, 15), (2, 9), (3, 3)], 17)
4
>>> lagrange([15, 9, 3], 17)
4
>>> lagrange(\
{1: 119182, 2: 11988467, 3: 6052427, 4: 8694701,\
5: 9050123, 6: 3676518, 7: 558333, 8: 12198248,\
9: 7344866, 10: 10114014, 11: 2239291, 12: 2515398},\
15485867)
123
>>> lagrange(\
[119182, 11988467, 6052427, 8694701, 9050123, 3676518,\
558333, 12198248, 7344866, 10114014, 2239291, 2515398],\
15485867)
123
Development
-----------
All installation and development dependencies are fully specified in ``pyproject.toml``. The ``project.optional-dependencies`` object is used to `specify optional requirements <https://peps.python.org/pep-0621>`__ for various development tasks. This makes it possible to specify additional options (such as ``docs``, ``lint``, and so on) when performing installation using `pip <https://pypi.org/project/pip>`__:
.. code-block:: bash
python -m pip install ".[docs,lint]"
Documentation
^^^^^^^^^^^^^
The documentation can be generated automatically from the source files using `Sphinx <https://www.sphinx-doc.org>`__:
.. code-block:: bash
python -m pip install ".[docs]"
cd docs
sphinx-apidoc -f -E --templatedir=_templates -o _source .. && make html
Testing and Conventions
^^^^^^^^^^^^^^^^^^^^^^^
All unit tests are executed and their coverage is measured when using `pytest <https://docs.pytest.org>`__ (see the ``pyproject.toml`` file for configuration details):
.. code-block:: bash
python -m pip install ".[test]"
python -m pytest
Alternatively, all unit tests are included in the module itself and can be executed using `doctest <https://docs.python.org/3/library/doctest.html>`__:
.. code-block:: bash
python src/lagrange/lagrange.py -v
Style conventions are enforced using `Pylint <https://pylint.readthedocs.io>`__:
.. code-block:: bash
python -m pip install ".[lint]"
python -m pylint src/lagrange
Contributions
^^^^^^^^^^^^^
In order to contribute to the source code, open an issue or submit a pull request on the `GitHub page <https://github.com/lapets/lagrange>`__ for this library.
Versioning
^^^^^^^^^^
Beginning with version 0.2.0, the version number format for this library and the changes to the library associated with version number increments conform with `Semantic Versioning 2.0.0 <https://semver.org/#semantic-versioning-200>`__.
Publishing
^^^^^^^^^^
This library can be published as a `package on PyPI <https://pypi.org/project/lagrange>`__ via the GitHub Actions workflow found in ``.github/workflows/build-publish-sign-release.yml`` that follows the `recommendations found in the Python Packaging User Guide <https://packaging.python.org/en/latest/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows/>`__.
Ensure that the correct version number appears in ``pyproject.toml``, and that any links in this README document to the Read the Docs documentation of this package (or its dependencies) have appropriate version numbers. Also ensure that the Read the Docs project for this library has an `automation rule <https://docs.readthedocs.io/en/stable/automation-rules.html>`__ that activates and sets as the default all tagged versions.
To publish the package, create and push a tag for the version being published (replacing ``?.?.?`` with the version number):
.. code-block:: bash
git tag ?.?.?
git push origin ?.?.?
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The ``project.optional-dependencies`` object is used to `specify optional requirements <https://peps.python.org/pep-0621>`__ for various development tasks. 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