---
id: cadquery-ocp-novtk
version: "7.9.3.1.1"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# cadquery-ocp-novtk — Python wrapper for Open CASCADE Technology 3D geometry library based on the official CadQuery/OCP sources (no VTK support)

License: permissive · Maintenance: active · Downloads: 264.6K/mo

## What it is and what it does

cadquery-ocp-novtk is a thin Python wrapper around the Open CASCADE Technology (OCCT) 3D geometry kernel, generated using pywrap. It exposes OCCT's modeling, topology, and geometry operations directly to Python, enabling developers to programmatically create and manipulate 3D shapes, perform geometric calculations, and work with CAD data. The package is designed primarily to support the CadQuery project and intentionally avoids adding functionality beyond what OCCT provides—it is a direct binding layer, not a higher-level abstraction.

The package ships precompiled wheels for Python 3.10–3.12 across macOS, Linux, and Windows, reducing installation friction. It explicitly excludes VTK (Visualization Toolkit) support, making it lighter-weight for headless or server-side geometry work. Type stubs are available separately for IDE integration. Active maintenance and recent releases indicate ongoing alignment with OCCT updates.

Use it for:

- Build CAD applications or geometry kernels in Python that require direct access to OCCT's modeling and topology operations.
- Perform 3D geometric calculations, shape transformations, and boolean operations in headless or server environments.
- Integrate OCCT geometry capabilities into workflows or parametric design tools.
- Develop computational geometry pipelines that need production-grade 3D kernel functionality without visualization overhead.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides Python bindings to the Open CASCADE Technology (OCCT) 3D geometry library, enabling programmatic access to OCCT's modeling, topology, and geometry operations without VTK visualization support.

Yes, if you need direct access to OCCT's 3D geometry and modeling capabilities in Python and are comfortable with a thin binding layer that does not abstract or extend OCCT's API. The permissive Apache-2.0 license, active maintenance, precompiled wheels, and lack of known vulnerabilities make it a solid choice for CAD, geometry, and parametric design work. Not suitable if you require VTK visualization or prefer higher-level geometry abstractions.

## Install

pip install cadquery-ocp-novtk
uv add cadquery-ocp-novtk
poetry add cadquery-ocp-novtk

## Installing cadquery-ocp-novtk

Before you install: Medium install friction due to compiled wheels; prebuilt binaries available for Python 3.10–3.12 on macOS (arm64, x86_64), Linux (aarch64, x86_64), and Windows (amd64). Active maintenance with a release within the last 78 days.

License in practice: Licensed under Apache-2.0 (permissive), allowing use in commercial and proprietary projects with minimal restrictions; attribution required.

Quickstart:

pip install cadquery-ocp-novtk

from OCP.gp import gp_Pnt
pt = gp_Pnt(1.0, 2.0, 3.0)

Requires Python >=3.10 and <3.15; VTK visualization is not supported in this variant.

Verify before relying:

- Completeness of OCCT module coverage and which specific OCCT versions are wrapped in 7.9.3.1.1.
- Performance characteristics and memory overhead compared to direct OCCT C++ usage.
- Availability and quality of type stubs (cadquery-ocp-stubs) for IDE support and type checking.

## Package facts

- License: Apache-2.0 (permissive)
- Python support: supports_current
- Install friction: medium
- Maintenance: active
- Downloads: 264.6K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

OCCT Python bindings, 3D geometry library Python, Open CASCADE Technology wrapper, CAD kernel Python, geometric modeling library, 3d-geometry, cad-kernel, occt-bindings

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