passagemath-plantri 10.5.20

passagemath: Generating planar graphs with plantri and fullgen

About SageMath

“Creating a Viable Open Source Alternative to

Magma, Maple, Mathematica, and MATLAB”

Copyright (C) 2005-2024 The Sage Development Team

https://www.sagemath.org

SageMath fully supports all major Linux distributions, recent versions of macOS, and Windows (Windows Subsystem for Linux).

See https://doc.sagemath.org/html/en/installation/index.html for general installation instructions.

About this pip-installable distribution package

This pip-installable distribution passagemath-plantri provides an interface to plantri.

What is included

• Binary wheels on PyPI contain prebuilt copies of plantri executables.

Examples

Using plantri programs on the command line:

$ pipx run --pip-args="--prefer-binary" --spec "passagemath-plantri" sage -sh -c plantri

Finding the installation location of a plantri program:

$ pipx run --pip-args="--prefer-binary" --spec "passagemath-plantri[test]" ipython

In [1]: from sage.features.graph_generators import Plantri

In [2]: Plantri().absolute_filename()
Out[2]: '.../bin/plantri'

Using the Python interface:

$ pipx run --pip-args="--prefer-binary" --spec "passagemath-plantri[test]" ipython

In [1]: from sage.all__sagemath_plantri import *

In [2]: len(list(graphs.planar_graphs(4, minimum_edges=4)))
Out[2]: 4

In [3]: gen = graphs.triangulations(6, only_eulerian=True); g = next(gen)

In [4]: g.is_isomorphic(graphs.OctahedralGraph())
Out[4]: True