Installation

SplineOps requires Python 3.11 or newer. Install the current release from PyPI:

python -m pip install splineops

Published wheels include the native resize extension on supported platforms. The Python resize reference remains available for parity checks and build environments without the extension.

Verify the installation

import importlib.util
import splineops

print(splineops.__version__)
print(importlib.util.find_spec("splineops._lsresize") is not None)

The second line reports whether the native CPU resize backend is present.

Backend control

SPLINEOPS_ACCEL=never forces the Python resize reference. SPLINEOPS_ACCEL=always requires the native extension and raises an error if it cannot be imported. The default, auto, uses the native backend when it is available.

Development installation

git clone https://github.com/splineops/splineops.git
cd splineops
python -m venv .venv
source .venv/bin/activate
python -m pip install -e '.[dev]'
python -m pytest -q

Optional dependencies and exact backend limitations are listed in Backend support contract.