cyrk

library0.17.1pypypi✓ verified 81d ago

CyRK is a Python package providing fast Runge-Kutta ODE integrators implemented in Cython and Numba. Version 0.17.1 supports Python 3.9–3.14 and offers drop-in replacements for scipy.integrate.solve_ivp with improved performance via C++ backends and optional numba acceleration. It has a moderate release cadence, roughly monthly.

ai-ml data

pip install cyrk

github ↗package ↗docs ↗

INSTALL

IMPORT

SIG · CYRK

cyrk

ai-mlpythonv0.17.1

Install

12.0s avg

Import

—

Disk

445MB

Pass rate

5/ 10

Env Coverage5 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v0.17.1 · 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

py 3.10–3.95 runs

build_error

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 12.0s · import 0.000s · 443MB

445MB installed

● package 445MB

Code

Verified usage

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

nbsolve_ivp

✓ from CyRK import nbsolve_ivp

✗ from CyRK import cysolve_ivp

PySolver

✓ from CyRK import PySolver

NbCySolverResult

✓ from CyRK import NbCySolverResult

Basic usage of cysolve_ivp to solve a simple ODE. Note the case-sensitive import.

import numpy as np from CyRK import cysolve_ivp def diffeq(t, y): return np.array([-0.5 * y[0]]) t_span = (0.0, 10.0) y0 = np.array([1.0]) result = cysolve_ivp(diffeq, t_span, y0, method='RK45', rtol=1e-6, atol=1e-8) print(result.success, result.t[-1], result.y[0, -1])

Debug

Known issues

gotchaPackage import is case-sensitive: import CyRK not cyrk. Wrong casing raises ImportError.

fix

Use from CyRK import ...

affects: all

gotchaCyRK uses its own solver classes and does not accept scipy OdeSolvers as input. Passing a scipy solver object will fail.

fix

Use only methods like 'RK45', 'RK23', 'DOP853' (strings) supported by CyRK.

affects: all

breakingIn v0.15.0, std::optional was removed from integrator configs. Code relying on accessing optional fields directly may break.

fix

Update to v0.15+; if you used optional fields, access them as regular attributes now.

affects: <0.15.0

Upgrade

Version history

0.17.1latest on PyPI · released Feb 23, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

17 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/jrenaud90/CyRK ↗

packagehttps://pypi.org/project/cyrk/ ↗

docshttps://cyrk.readthedocs.io/en/latest/ ↗