Sourced from pyo3's releases.

PyO3 0.22.2

This release contains some minor reliability fixes building upon PyO3 0.22.1.

As PyO3 is still working on supporting freethreaded Python (upcoming in 3.13), support has been gated behind an UNSAFE_PYO3_BUILD_FREE_THREADED=1 environment variable to avoid unsuspecting users running into broken builds.

Packages built for the abi3 stable ABI will now use FFI functions for refcounting instead of inline reference count modifications on all versions of the stable ABI (previously only abi3 builds for 3.12 and up would use FFI functions). This helps mitigate interactions of old versions of the stable ABI with future CPython releases which do more complex reference counting (e.g. immortal objects, freethreaded reference counting).

The #[pymodule] declarative module now supports directly receiving options. (E.g. #[pymodule(name = "foo")], which would previously have been written as two attributes #[pymodule] #[pyo3(name = "foo")].)

A compile error on Rust 1.78 related to use of c"" literals has been fixed.

Thank you to the following contributors for the improvements:

@​davidhewitt @​FlickerSoul @​gi0baro @​Icxolu @​MatthijsKok @​styvane

PyO3 0.22.1

This patch release improves some cases related to new functionality in PyO3 0.22.

PartialEq<bool> has been added for Bound<'py, PyBool>.

The #[pyo3(submodule)] attribute has been added for declarative modules to stop submodules from generating an external C symbol for importing the submodule directly (which is typically never used). Declarative modules will also now correctly add items annotated with full-path attributes like #[pyo3::prelude::pyfunction].

The #[pyclass(eq)] option will no longer raise a TypeError on comparison against types not in the signature.

A #[setter] in #[pymethods] with an Option<T> input will no longer raise a deprecation warning.

A regression has been fixed in conversions for 128-bit integers on big-endian platforms.

Thank you to the following contributors for the improvements:

@​alex @​davidhewitt @​jatoben @​kylebarron @​musicinmybrain @​ngoldbaum @​Owen-CH-Leung

Sourced from pyo3's changelog.

[0.22.2] - 2024-07-17

Packaging

• Require opt-in to freethreaded Python using the UNSAFE_PYO3_BUILD_FREE_THREADED=1 environment variable (it is not yet supported by PyO3). #4327

Changed

• Use FFI function calls for reference counting on all abi3 versions. #4324
• #[pymodule(...)] now directly accepts all relevant #[pyo3(...)] options. #4330

Fixed

• Fix compile failure in declarative #[pymodule] under presence of #![no_implicit_prelude]. #4328
• Fix compile failure due to c-string literals on Rust < 1.79. #4353

[0.22.1] - 2024-07-06

Added

• Add #[pyo3(submodule)] option for declarative #[pymodule]s. #4301
• Implement PartialEq<bool> for Bound<'py, PyBool>. #4305

Fixed

• Return NotImplemented instead of raising TypeError from generated equality method when comparing different types. #4287
• Handle full-path #[pyo3::prelude::pymodule] and similar for #[pyclass] and #[pyfunction] in declarative modules.#4288
• Fix 128-bit int regression on big-endian platforms with Python <3.13. #4291
• Stop generating code that will never be covered with declarative modules. #4297
• Fix invalid deprecation warning for trailing optional on #[setter] function. #4304

• 92b0f15 release: 0.22.2
• da9f52e only emit c-string literals on Rust 1.79 and later (#4352) (#4353)
• 3d7e5a3 chore: update ruff configuration to resolve deprecation warning (#4346)
• e2ebb72 use FFI calls for refcounting on all abi3 versions (#4324)
• 7e0fc30 allow #[pymodule(...)] to accept all relevant #[pyo3(...)] options (#4330)
• 6317570 remove BuildFlag member to avoid breaking change in patch
• 7fed7c3 Prevent building in GIL-less environment (#4327)
• d99fc06 docs: fixups to 0.22 migration guide (#4332)
• 613a70b docs: use versioned links from docs to guide (#4331)
• b50f1c3 ci: check minimal-versions on MSRV feature powerset (#4273)
• Additional commits viewable in compare view

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