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passagemath-planarity

library10.8.4pypypiunverified

Wraps the edge addition planarity suite for graph planarity testing and embedding in passagemath. Version 10.8.4, requires Python >=3.11, <3.15. Part of the passagemath ecosystem. Release cadence follows passagemath.

database

pip install passagemath-planarity

github ↗package ↗homepage ↗docs ↗changelog ↗

INSTALL

IMPORT

SIG · PASSAGEMATH-PLANAR

passagemath-planarity

databasepythonv10.8.4

Install

11.3s avg

Import

—

Disk

368MB

Pass rate

8/ 10

Env Coverage8 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v10.6.48 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

glibc

py 3.10

✓ —

✓ 13.7s

py 3.11

✓ —

✓ 8.4s

py 3.12

✓ —

✓ 8.1s

py 3.13

✕ build_error

py 3.9

✓ —

✓ 15s

368MB installed

● package 368MB

Code

Verified usage

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

planarity

✓ from sage.graphs.planarity import planarity

✗ from passagemath.planarity import planarity

Quick example showing planarity test and planar embedding extraction.

from passagemath.planarity import planarity # Test planarity of a graph given as adjacency list # Graph: triangle with an extra isolated vertex adj = {0: [1,2], 1: [0,2], 2: [0,1], 3: []} result = planarity.is_planar(adj) print(result) # True # Get a planar embedding try: embedding = planarity.planar_embedding(adj) print(embedding) except Exception as e: print(e)

Debug

Known issues

gotchaThe library is part of the passagemath ecosystem. Do not import 'planarity' directly; always use 'from passagemath.planarity import planarity'.

fix

Use the correct import path: from passagemath.planarity import planarity

affects: >=10.8

deprecatedSome older examples use 'passagemath.planarity.planarity' (duplicated module name). This still works but is redundant; the canonical import is 'from passagemath.planarity import planarity'.

fix

Use the recommended import: from passagemath.planarity import planarity

affects: 10.8.x

gotchaRequires Python >=3.11, <3.15. Installing on Python 3.15+ will fail.

fix

Use a Python version from 3.11 to 3.14.

affects: 10.8.4

Upgrade

Version history

10.8.4latest on PyPI · released Apr 20, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

5 hits · last 30 days

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Resources

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

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

homepagehttps://passagemath.com ↗

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

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