feat: add proper Python module structure and uv/pyproject.toml support

Based on @carlosdp's PR unitreerobotics#107.

- Add __init__.py files to all subpackages for proper Python module resolution
- Migrate from setup.py to pyproject.toml with full project metadata
- Add cyclonedds pre-built wheel dependencies for macOS (x86_64/arm64) and Linux (x86_64/aarch64)
- Add fastcrc, numpy, opencv-python as project dependencies
- Add a note to README explaining the fork origin and changes
- Update .gitignore for Python packaging artifacts

https://claude.ai/code/session_01Er2d4LqFWhD6J43Jkn8vfW

Author: claude

.gitignore

@@ -36,4 +36,6 @@ __pycache__
 .idea/
 
 # python
-dist/
+dist/
+
+uv.lock

README.md

@@ -1,4 +1,7 @@
 # unitree_sdk2_python
+
+> **Note:** This is a fork of [unitreerobotics/unitree_sdk2_python](https://github.com/unitreerobotics/unitree_sdk2_python) with modern Python packaging support (`pyproject.toml` + [uv](https://github.com/astral-sh/uv)). The changes are based on [@carlosdp](https://github.com/carlosdp)'s [PR #107](https://github.com/unitreerobotics/unitree_sdk2_python/pull/107), which replaces `setup.py` with `pyproject.toml`, uses pre-built [cyclonedds wheels](https://github.com/carlosdp/cyclonedds-python/releases) (no manual C compilation needed), and swaps platform-specific CRC `.so` binaries for the cross-platform [`fastcrc`](https://pypi.org/project/fastcrc/) package.
+
 Python interface for unitree sdk2
 
 # Installation

pyproject.toml

@@ -1,3 +1,45 @@
+[project]
+name = "unitree_sdk2py"
+version = "1.0.1"
+description = "Unitree robot sdk version 2 for python"
+readme = { file = "README.md", content-type = "text/markdown" }
+requires-python = ">=3.11"
+license = { text = "BSD-3-Clause" }
+authors = [
+  { name = "UnitreeRobotics", email = "unitree@unitree.com" }
+]
+dependencies = [
+  # macOS x86_64
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp311-cp311-macosx_10_9_x86_64.whl ; python_version >= '3.11' and python_version < '3.12' and sys_platform == 'darwin' and platform_machine == 'x86_64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp312-cp312-macosx_10_9_x86_64.whl ; python_version >= '3.12' and python_version < '3.13' and sys_platform == 'darwin' and platform_machine == 'x86_64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp313-cp313-macosx_10_13_x86_64.whl ; python_version >= '3.13' and python_version < '3.14' and sys_platform == 'darwin' and platform_machine == 'x86_64'",
+
+  # macOS arm64
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp311-cp311-macosx_11_0_arm64.whl ; python_version >= '3.11' and python_version < '3.12' and sys_platform == 'darwin' and platform_machine == 'arm64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp312-cp312-macosx_11_0_arm64.whl ; python_version >= '3.12' and python_version < '3.13' and sys_platform == 'darwin' and platform_machine == 'arm64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp313-cp313-macosx_11_0_arm64.whl ; python_version >= '3.13' and python_version < '3.14' and sys_platform == 'darwin' and platform_machine == 'arm64'",
+
+  # Linux aarch64 (manylinux)
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp311-cp311-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl ; python_version >= '3.11' and python_version < '3.12' and sys_platform == 'linux' and platform_machine == 'aarch64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp312-cp312-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl ; python_version >= '3.12' and python_version < '3.13' and sys_platform == 'linux' and platform_machine == 'aarch64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp313-cp313-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl ; python_version >= '3.13' and python_version < '3.14' and sys_platform == 'linux' and platform_machine == 'aarch64'",
+
+  # Linux x86_64 (manylinux)
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl ; python_version >= '3.11' and python_version < '3.12' and sys_platform == 'linux' and platform_machine == 'x86_64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp312-cp312-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl ; python_version >= '3.12' and python_version < '3.13' and sys_platform == 'linux' and platform_machine == 'x86_64'",
+  "cyclonedds @ https://github.com/carlosdp/cyclonedds-python/releases/download/0.10.5/cyclonedds-0.10.5-cp313-cp313-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl ; python_version >= '3.13' and python_version < '3.14' and sys_platform == 'linux' and platform_machine == 'x86_64'",
+
+  "fastcrc>=0.3.2",
+  "numpy",
+  "opencv-python",
+]
+
+[project.urls]
+"Source Code" = "https://github.com/unitreerobotics/unitree_sdk2_python"
+
 [build-system]
-requires = ["setuptools", "wheel"]
-build-backend = "setuptools.build_meta"
+requires = ["setuptools>=64", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools.packages.find]
+include = ["unitree_sdk2py", "unitree_sdk2py.*"]