sagemath_plantri: Generating planar graphs with plantri and fullgen

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

Type

optional

Dependencies

Version Information

package-version.txt:

10.6.29

version_requirements.txt:

passagemath-plantri ~= 10.6.29.0

Installation commands

$ pip install passagemath-plantri~=10.6.29.0

$ sage -i sagemath_plantri

However, these system packages will not be used for building Sage because spkg-configure.m4 has not been written for this package; see upstream Issue #27330 for more information.