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passagemath-plantri

library10.8.4pypypiunverified

A Python interface to plantri and fullgen for generating planar triangulations, cubic planar graphs, and other planar graph families. Part of the passagemath ecosystem. Current version 10.8.4, requires Python 3.11-3.14. Releases follow passagemath release cycle.

data

pip install passagemath-plantri

github ↗package ↗docs ↗changelog ↗

INSTALL

IMPORT

SIG · PASSAGEMATH-PLANTR

passagemath-plantri

datapythonv10.8.4

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

planar_triangulations

✓ from passagemath_plantri import planar_triangulations

✗ from passagemath.plantri import planar_triangulations

Generate all planar triangulations on 6 vertices (2 connected, 3-connected) and print each as graph6 string.

from passagemath.plantri import planar_triangulations for g in planar_triangulations(6): print(g.graph6_string())

Debug

Known issues

gotchaThe `plantri` and `fullgen` binaries must be installed separately (e.g., via system package manager or by downloading from plantri website) and placed in PATH. Wrapper does NOT bundle them.

fix

Install plantri binary (e.g., 'sudo apt install plantri' on Debian/Ubuntu, or download from https://users.cecs.anu.edu.au/~bdm/plantri/)

affects: all

deprecatedPassing integer arguments directly to plantri functions (e.g., planar_triangulations(6)) is deprecated. Use PlantriOptions class instead.

fix

Use PlantriOptions(n=6, ...) and pass to functions

affects: >=10.8

breakingBefore passagemath 10.0, the library was named 'plantri' on PyPI and imported as 'import plantri'. Now it's 'passagemath-plantri' and imported from passagemath.plantri.

fix

Update imports: from passagemath.plantri import ...

affects: >=10.0

gotchaGenerated graphs are passagemath Graph objects, not networkx or igraph. Use .graph6_string() or adjacency_matrix() to convert.

fix

Use methods like g.graph6_string() or g.to_networkx() if passagemath-networkx installed

affects: all

Upgrade

Version history

10.8.4latest on PyPI · released Apr 20, 2026

Audit

Dependencies

passagemath-corerequiredBase library providing graph objects and caching infrastructure

plantrioptionalThird-party binary (plantri/fullgen) must be available in PATH or configured

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/passagemath/passagemath ↗

packagehttps://pypi.org/project/passagemath-plantri/ ↗

docshttps://passagemath.org/docs/latest ↗

changeloghttps://github.com/passagemath/passagemath/releases ↗