nodebpy

Build node trees in Blender more elegantly with Python code. Geometry Nodes, Shader Nodes and Compositor nodes are all fully supported, with type hints and IDE auto-completion throughout.

pip install nodebpy

A text-based version of nodes should bring the convenience of writing code with IDE auto-completion, type hinting, with overall compactness and readability, while staying as close as possible to what building a node tree via the GUI feels like.

from nodebpy import geometry as g

with g.tree("AnotherTree", collapse=True) as tree:
    rotation = (
        g.RandomValue.vector(min=-1, seed=2)
        >> g.AlignRotationToVector()
        >> g.RotateRotation(rotate_by=g.AxisAngleToRotation(angle=0.3))
    )

    _ = (
        tree.inputs.integer("Count", 10)
        >> g.Points(position=g.RandomValue.vector(min=-1))
        >> g.InstanceOnPoints(instance=g.Cube(), rotation=rotation)
        >> g.SetPosition(
            position=g.Position() * 2.0 + (0, 0.2, 0.3),
            offset=(0, 0, 0.1),
        )
        >> g.RealizeInstances()
        >> g.InstanceOnPoints(g.Cube(), instance=...)
        >> tree.outputs.geometry("Instances")
    )

Every node is a typed class named after the node it creates — 'Random Value' becomes g.RandomValue() — and node subtypes are class methods: g.RandomValue.vector().
Trees are built inside a with g.tree(...): context; instantiating a node class adds it to the current tree, and the tree's interface is declared with tree.inputs.* / tree.outputs.*.
Nodes are linked with the >> operator, which picks the most compatible socket pair automatically (much like Node Wrangler's Alt + Right Click drag) — or address sockets explicitly through the .i.* / .o.* accessors.
Python's arithmetic, comparison and boolean operators create the matching Math / VectorMath / Compare / BooleanMath nodes: g.Value(1.0) * 2 + (0, 0, 1).
Existing node trees — including ones wired up by hand in the GUI — can be exported back to nodebpy source with to_python().

Documentation

Guides and the full node reference live at bradyajohnston.github.io/nodebpy:

Writing node trees — adding, linking and organising nodes
Math operators — arithmetic, comparison and boolean expressions as nodes
Node API design — sockets, accessors, enum options and class methods
Custom node groups and asset node groups — reusable groups as Python classes
Nodes to code — turn existing trees back into nodebpy code
Using nodebpy in your add-on — installation, bundling and the Blender-tracking versioning scheme
Comparisons — how the API relates to geometry-script, geonodes, NodeToPython and TreeClipper

Like databpy, this project started as an internal tool inside molecularnodes before being broken out into its own robustly typed and tested package.

Contributing

Development setup, running the tests and regenerating the node classes (most of src/nodebpy/nodes/ is auto-generated by the gen/ package) are covered in CONTRIBUTING.md.

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

nodebpy-520.13.0.tar.gz (330.5 kB view details)

Uploaded Aug 20, 2026 Source

Built Distribution

If you're not sure about the file name format, learn more about wheel file names.

The dropdown lists show the available interpreters, ABIs, and platforms. Enable javascript to be able to filter the list of wheel files.

nodebpy-520.13.0-py3-none-any.whl (371.1 kB view details)

Uploaded Aug 20, 2026 Python 3

File details

Details for the file nodebpy-520.13.0.tar.gz.

File metadata

Download URL: nodebpy-520.13.0.tar.gz
Upload date: Aug 20, 2026
Size: 330.5 kB
Tags: Source
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/7.0.0 CPython/3.13.14

File hashes

Hashes for nodebpy-520.13.0.tar.gz
Algorithm	Hash digest
SHA256	`29e18993309b2283c2eda1ec97940f6acbce27da839cf59747928d8288dd5580`
MD5	`977ec111b7c11111fdee16feac69f82f`
BLAKE2b-256	`770009ad46ee3c7e66de01024eb32c0e09f28711fbfb4e282f3eed0d55b339d8`

See more details on using hashes here.

Provenance

The following attestation bundles were made for nodebpy-520.13.0.tar.gz:

Publisher: pypi.yml on BradyAJohnston/nodebpy

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: nodebpy-520.13.0.tar.gz
- Subject digest: 29e18993309b2283c2eda1ec97940f6acbce27da839cf59747928d8288dd5580
- Sigstore transparency entry: 2532026536
- Sigstore integration time: Aug 20, 2026
Source repository:
- Permalink: BradyAJohnston/nodebpy@9faf66e05a74c79566f1191bfb9410708e982d80
- Branch / Tag: refs/tags/v520.13.0
- Owner: https://github.com/BradyAJohnston
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: pypi.yml@9faf66e05a74c79566f1191bfb9410708e982d80
- Trigger Event: push