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PyO3 0.19.2

This release is a bugfix release with the primary focus being improved compatibility with Python 3.12 betas. Please note that until Python 3.12.0 stable is released PyO3 cannot guarantee that code compiled using PyO3 and beta versions of Python 3.12 will support 3.12 stable.

There have been some new minor APIs added in this release: PyErr::Display, PyAny::downcast_exact and PySlice::full.

Other bugfixes shipped in this release include:

• A correction to the conversion of Python datetime to chrono::DateTime<FixedOffset> with respect to the handling of timezones.
• Fix an edge case where PyErr::matches and PyErr::get_type could return results inconsistent with each other.
• Fix cases where converting a Python exception into a PyErr would cause its traceback to be lost.

Thank you to the following users for the improvements:

@​adamreichold @​alex @​BooleanCat @​CallMeMSL @​cdce8p @​davidhewitt @​grantslatton @​juntyr @​mejrs @​panpilkarz @​ringsaturn @​zakstucke

Sourced from pyo3's changelog.

[0.19.2] - 2023-08-01

Added

• Add FFI definitions PyState_AddModule, PyState_RemoveModule and PyState_FindModule for PyPy 3.9 and up. #3295
• Add FFI definitions _PyObject_CallFunction_SizeT and _PyObject_CallMethod_SizeT. #3297
• Add a "performance" section to the guide collecting performance-related tricks and problems. #3304
• Add PyErr::Display for all Python versions, and FFI symbol PyErr_DisplayException for Python 3.12. #3334
• Add FFI definition PyType_GetDict() for Python 3.12. #3339
• Add PyAny::downcast_exact. #3346
• Add PySlice::full() to construct a full slice (::). #3353

Changed

• Update PyErr for 3.12 betas to avoid deprecated ffi methods. #3306
• Update FFI definitions of object.h for Python 3.12.0b4. #3335
• Update pyo3::ffi struct definitions to be compatible with 3.12.0b4. #3342
• Optimize conversion of float to f64 (and PyFloat::value) on non-abi3 builds. #3345

Fixed

• Fix timezone conversion bug for FixedOffset datetimes that were being incorrectly converted to and from UTC. #3269
• Fix SystemError raised in PyUnicodeDecodeError_Create on PyPy 3.10. #3297
• Correct FFI definition Py_EnterRecursiveCall to return c_int (was incorrectly returning ()). #3300
• Fix case where PyErr::matches and PyErr::is_instance returned results inconsistent with PyErr::get_type. #3313
• Fix loss of panic message in PanicException when unwinding after the exception was "normalized". #3326
• Fix PyErr::from_value and PyErr::into_value losing traceback on conversion. #3328
• Fix reference counting of immortal objects on Python 3.12.0b4. #3335

[0.19.1] - 2023-07-03

Packaging

• Extend range of supported versions of hashbrown optional dependency to include version 0.14 #3258
• Extend range of supported versions of indexmap optional dependency to include version 2. #3277
• Support PyPy 3.10. #3289

Added

• Add pyo3::types::PyFrozenSetBuilder to allow building a PyFrozenSet item by item. #3156
• Add support for converting to and from Python's ipaddress.IPv4Address/ipaddress.IPv6Address and std::net::IpAddr. #3197
• Add support for num-bigint feature in combination with abi3. #3198
• Add PyErr_GetRaisedException(), PyErr_SetRaisedException() to FFI definitions for Python 3.12 and later. #3248
• Add Python::with_pool which is a safer but more limited alternative to Python::new_pool. #3263
• Add PyDict::get_item_with_error on PyPy. #3270
• Allow #[new] methods may to return Py<Self> in order to return existing instances. #3287

Fixed

... (truncated)

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