pythonOCC

Long-running open-source Python wrapper for the Open CASCADE Technology C++ kernel.

pythonOCC has provided Python bindings to OCCT since 2008. It lets Python developers access the full OCCT geometry, modeling, and visualization surface without writing C++, and integrates naturally with the Python data ecosystem (NumPy, SciPy, Jupyter). Used by architects, engineers, and researchers across 3D modeling, CAD, BIM, and aerospace workflows.

At a glance

Field	Value
Type	Wrapper
Software type	open-source
License	LGPL-3.0-only
Languages	Python, C++
Platforms	Windows, Linux, macOS
Repository	https://github.com/tpaviot/pythonocc-core
Demos	https://github.com/tpaviot/pythonocc-demos

Typical use cases

• Scripting CAD pipelines from Jupyter / VS Code.
• Bridging OCCT geometry to scientific-Python workflows.
• Teaching CAD without local C++ build setup.

Related entries

• pyOCCT - newer pybind11-based Python bindings.