v1.2.0 — Skeletal animation, ASSIMP 6.0.5, Python 3.12–3.14

Highlights

Skeletal animation support

Bones and animations are now exposed to Python:

• mesh.bones → Bone objects: name, bind-pose offset_matrix, per-bone vertex weights as parallel memoryviews (weights / weight_vertex_ids), plus armature_name/node_name when loading with the new Process_PopulateArmatureData flag
• scene.animations → Animation objects: name, duration, ticks_per_second, and per-node NodeAnim channels with position/rotation/scaling key tracks as float64-time + float32-value memoryviews, including pre/post behaviour states
• New constants: Process_PopulateArmatureData, AnimBehaviour_DEFAULT/_CONSTANT/_LINEAR/_REPEAT
• See the README skeletal-animation section and the new interactive demo (pip install assimp-py[demo], python examples/demo.py)

ASSIMP upgraded to 6.0.5 (from 5.4.3)

• Now fetched at build time via CMake FetchContent (SHA256-pinned release tarball) instead of a vendored source tree
• Includes fixes for the 2025 assimp CVEs (CVE-2025-2750/2751/2757/3158/3196)

Python 3.12 – 3.14

• Wheels for the three newest CPython versions; support for 3.9–3.11 dropped (those versions have reached or are reaching end-of-life — pip will keep resolving assimp-py 1.1.0 there)

Fixes

• Windows ARM64 wheels now actually work — the 1.1.0 win_arm64 wheels contained x64 binaries
• Memoryview lifetime fix — exported memoryviews (vertices, weights, key frames, …) now keep their backing data alive for as long as any view references it
• Source distributions repaired — earlier sdists were missing build files and could not be built from source

Packaging

• 55 wheels per release: Windows (AMD64/ARM64), macOS universal2, manylinux2014/2_28 (x86_64, i686, aarch64, ppc64le, s390x), musllinux_1_2 (6 arches)
• Requires-Python >= 3.12

assimp_py 1.1.0

What's Changed

• Updated ASSIMP to version 5.4.3
• Use memoryviews for vertex data (improves performance and memory use)
• Added an API to get nodes

Full Changelog: v1.0.8...v1.1.0

assimp_py v1.0.8

What's Changed

• Support for Python 3.12 and 3.13
• Generating wheels for the following operating systems now:
  • Windows x86 (64-bit)
  • Windows on arm
  • Mac OS universal2
  • Manylinux2014 and Manylinux_2_28 builds for:
    • x86_64
    • aarch64
    • s390x
    • ppc64le
  • Manylinux2014 i686
  • Musllinux_1_2 builds for:
    • x86_64
    • i686
    • aarch64
    • armv7l
    • s390x
    • ppc64le

• Updated GitHub Actions for Python 3.13, added new deploy Action and fixed mac universal2 build by @Zuzu-Typ in #7
• Updated status badges and install command by @Zuzu-Typ in #9
• Bump version (1.0.8) and add homepage url by @Zuzu-Typ in #8

Full Changelog: v1.0.7...v1.0.8-rc1

assimp_py v1.0.7

• Support python 3.11
• Update assimp sources

assimp_py v1.0.6

Support python 3.10

assimp_py v1.0.5

Return a list of tuples for the indices instead of flat list.

(Oversight from last release)

assimp_py v1.0.4

Bugfix release:

• previous release had useless face data, replaced with indices list.

assimp_py v1.0.3

update version

assimp_py v1.0.0

Initial release