OCC Wrapper Library

April 23, 2026 ยท View on GitHub

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OCCWL is a simple, lightweight Pythonic wrapper around pythonocc (python bindings for OpenCascade).

Installing our conda package

conda create --name=myoccwlenv python=3.12
conda activate myoccwlenv
conda install -c lambouj -c conda-forge occwl

We have noticed conda running very slow recently. See issue #26. If conda is too slow, we recommend using mamba.

conda install -n base mamba -c conda-forge
...
mamba install occwl -c lambouj -c conda-forge

Hello world

from occwl.solid import Solid
from occwl.viewer import Viewer

box = Solid.make_box(10, 10, 10)
v = Viewer()
v.display(box)
v.fit()
v.show()

should display a box:

hello world viewer

More examples are available in the examples folder.

Developing and maintaining OCCWL

Please see here for information useful for developers and maintainers of OCCWL. This includes details on how to run tests and publish the conda package.

Maintainers