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phillip-wenig-frequenz merged 1 commit into from
Apr 29, 2026
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Empty release notes #19

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37 changes: 4 additions & 33 deletions RELEASE_NOTES.md
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## Summary

This release introduces Rust-backed Python bindings for resampling and migrates
the Python package to the `frequenz.resampling` namespace.

The project now builds via `maturin`, includes a PyO3 extension module, and has
expanded tests and CI to validate the compiled package workflow.
<!-- Here goes a general summary of what this release is about -->

## Upgrading

- Update imports from `resampling` to `frequenz.resampling`.
- Old: `from resampling import Resampler`
- New: `from frequenz.resampling import Resampler`
- The implementation is now provided by a Rust extension module
(`frequenz.resampling._rust_backend`) built with `maturin`.
- If you maintain tooling around docs/linting/test discovery, note that Python
source paths now target `frequenz/` and pytest collection targets `tests/`.
<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->

## New Features

- Add Rust crate wrapper for `frequenz-resampling` using PyO3.
- Expose Python API in `frequenz.resampling` with:
- `Resampler`
- `resample()`
- `ResamplingFunction`
- `Closed`
- `Label`
- Add type stubs for the extension module (`_rust_backend.pyi`).
- Add comprehensive Python binding tests.
- Update CI packaging flow to better support compiled distribution builds across
environments.
- Expand repository docs (`README.md`, `AGENTS.md`) for the new architecture.

## Build Changes

- Switch from a single abi3-compatible wheel to per-Python-version wheels
(`cp311`, `cp312`, `cp313`, `cp314`). This removes the `abi3-py311` PyO3
feature so each supported Python version gets its own compiled wheel.
<!-- Here goes the main new features and examples or instructions on how to use them -->

## Bug Fixes

- Fix docs and tooling source path assumptions from `src/` to `frequenz/` for
mkdocs/mkdocstrings and related generation scripts.
- Apply formatting and cleanup updates around the new bindings and tests.
<!-- Here goes notable bug fixes that are worth a special mention or explanation -->
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