PyO3 changelog

Changelog History

Page 1

• v0.16.4 Changes

  April 14, 2022

  ➕ Added

  • ➕ Add PyTzInfoAccess trait for safe access to time zone information. #2263
  • ➕ Add an experimental generate-abi3-import-lib feature to auto-generate python3.dll import libraries for Windows. #2282
  • Add FFI definitions for PyDateTime_BaseTime and PyDateTime_BaseDateTime. #2294

  🔄 Changed

  • 👌 Improved performance of failing calls to FromPyObject::extract which is common when functions accept multiple distinct types. #2279
  • 0️⃣ Default to "m" ABI tag when choosing libpython link name for CPython 3.7 on Unix. #2288
  • 👍 Allow to compile "abi3" extensions without a working build host Python interpreter. #2293

  🛠 Fixed

  • Crates depending on PyO3 can collect code coverage via LLVM instrumentation using stable Rust. #2286
  • Fix segfault when calling FFI methods PyDateTime_DATE_GET_TZINFO or PyDateTime_TIME_GET_TZINFO on datetime or time without a tzinfo. #2289
  • 🛠 Fix directory names starting with the letter n breaking serialization of the interpreter configuration on Windows since PyO3 0.16.3. #2299

• v0.16.3 Changes

  April 05, 2022

  Packaging

  • 👍 Extend parking_lot dependency supported versions to include 0.12. #2239

  ➕ Added

  • 🏗 Add methods to pyo3_build_config::InterpreterConfig to run Python scripts using the configured executable. #2092
  • ➕ Add as_bytes method to Py<PyBytes>. #2235
  • Add FFI definitions for PyType_FromModuleAndSpec, PyType_GetModule, PyType_GetModuleState and PyModule_AddType. #2250
  • 🏗 Add pyo3_build_config::cross_compiling_from_to as a helper to detect when PyO3 is cross-compiling. #2253
  • ➕ Add #[pyclass(mapping)] option to leave sequence slots empty in container implementations. #2265
  • ➕ Add PyString::intern to enable usage of the Python's built-in string interning. #2268
  • ➕ Add intern! macro which can be used to amortize the cost of creating Python strings by storing them inside a GILOnceCell. #2269
  • Add PYO3_CROSS_PYTHON_IMPLEMENTATION environment variable for selecting the default cross Python implementation. #2272

  🔄 Changed

  • Allow #[pyo3(crate = "...", text_signature = "...")] options to be used directly in #[pyclass(crate = "...", text_signature = "...")]. #2234
  • Make PYO3_CROSS_LIB_DIR environment variable optional when cross compiling. #2241
  • Mark METH_FASTCALL calling convention as limited API on Python 3.10. #2250
  • 🏗 Deprecate pyo3_build_config::cross_compiling in favour of pyo3_build_config::cross_compiling_from_to. #2253

  🛠 Fixed

  • 🛠 Fix abi3-py310 feature: use Python 3.10 ABI when available instead of silently falling back to the 3.9 ABI. #2242
  • 📚 Use shared linking mode when cross compiling against a Framework bundle for macOS. #2233
  • Fix panic during compilation when PYO3_CROSS_LIB_DIR is set for some host/target combinations. #2232
  • Correct dependency version for syn to require minimal patch version 1.0.56. #2240

• v0.16.2 Changes

  March 15, 2022

  Packaging

  • Warn when modules are imported on PyPy 3.7 versions older than PyPy 7.3.8, as they are known to have binary compatibility issues. #2217
  • 🏗 Ensure build script of pyo3-ffi runs before that of pyo3 to fix cross compilation. #2224

• v0.16.1 Changes

  March 05, 2022

  Packaging

  • 👍 Extend hashbrown optional dependency supported versions to include 0.12. #2197

  🛠 Fixed

  • 🛠 Fix incorrect platform detection for Windows in pyo3-build-config. #2198
  • 🛠 Fix regression from 0.16 preventing cross compiling to aarch64 macOS. #2201

• v0.16.0 Changes

  February 27, 2022

  Packaging

  • ⚡️ Update MSRV to Rust 1.48. #2004
  • ⚡️ Update indoc optional dependency to 1.0. #2004
  • ⬇️ Drop support for Python 3.6, remove abi3-py36 feature. #2006
  • 🏗 pyo3-build-config no longer enables the resolve-config feature by default. #2008
  • ⚡️ Update inventory optional dependency to 0.2. #2019
  • ⬇️ Drop paste dependency. #2081
  • The bindings found in pyo3::ffi are now a re-export of a separate pyo3-ffi crate. #2126
  • 👌 Support PyPy 3.9. #2143

  ➕ Added

  • ➕ Add PyCapsule type exposing the Capsule API. #1980
  • 🏗 Add pyo3_build_config::Sysconfigdata and supporting APIs. #1996
  • ➕ Add Py::setattr method. #2009
  • ➕ Add #[pyo3(crate = "some::path")] option to all attribute macros (except the deprecated #[pyproto]). #2022
  • 📄 Enable create_exception! macro to take an optional docstring. #2027
  • Enable #[pyclass] for fieldless (aka C-like) enums. #2034
  • Add buffer magic methods __getbuffer__ and __releasebuffer__ to #[pymethods]. #2067
  • Add support for paths in wrap_pyfunction and wrap_pymodule. #2081
  • Enable wrap_pyfunction! to wrap a #[pyfunction] implemented in a different Rust module or crate. #2091
  • ➕ Add PyAny::contains method (in operator for PyAny). #2115
  • ➕ Add PyMapping::contains method (in operator for PyMapping). #2133
  • Add garbage collection magic magic methods __traverse__ and __clear__ to #[pymethods]. #2159
  • Add support for from_py_with on struct tuples and enums to override the default from-Python conversion. #2181
  • ➕ Add eq, ne, lt, le, gt, ge methods to PyAny that wrap rich_compare. #2175
  • ➕ Add Py::is and PyAny::is methods to check for object identity. #2183
  • Add support for the __getattribute__ magic method. #2187

  🔄 Changed

  • PyType::is_subclass, PyErr::is_instance and PyAny::is_instance now operate run-time type object instead of a type known at compile-time. The old behavior is still available as PyType::is_subclass_of, PyErr::is_instance_of and PyAny::is_instance_of. #1985
  • 🗄 Rename some methods on PyErr (the old names are just marked deprecated for now): #2026
    • pytype -> get_type
    • pvalue -> value (and deprecate equivalent instance)
    • ptraceback -> traceback
    • from_instance -> from_value
    • into_instance -> into_value
  • 📄 PyErr::new_type now takes an optional docstring and now returns PyResult<Py<PyType>> rather than a ffi::PyTypeObject pointer. #2027
  • Deprecate PyType::is_instance; it is inconsistent with other is_instance methods in PyO3. Instead of typ.is_instance(obj), use obj.is_instance(typ). #2031
  • __getitem__, __setitem__ and __delitem__ in #[pymethods] now implement both a Python mapping and sequence by default. #2065
  • 👌 Improve performance and error messages for #[derive(FromPyObject)] for enums. #2068
  • ⬇️ Reduce generated LLVM code size (to improve compile times) for:
    • internal handle_panic helper #2074 #2158
    • #[pyfunction] and #[pymethods] argument extraction #2075 #2085
    • #[pyclass] type object creation #2076 #2081 #2157
  • Respect Rust privacy rules for items wrapped with wrap_pyfunction and wrap_pymodule. #2081
  • Add modulo argument to __ipow__ magic method. #2083
  • 🛠 Fix FFI definition for _PyCFunctionFast. #2126
  • PyDateTimeAPI and PyDateTime_TimeZone_UTC are are now unsafe functions instead of statics. #2126
  • PyDateTimeAPI does not implicitly call PyDateTime_IMPORT anymore to reflect the original Python API more closely. Before the first call to PyDateTime_IMPORT a null pointer is returned. Therefore before calling any of the following FFI functions PyDateTime_IMPORT must be called to avoid undefined behaviour: #2126
    • PyDateTime_TimeZone_UTC
    • PyDate_Check
    • PyDate_CheckExact
    • PyDateTime_Check
    • PyDateTime_CheckExact
    • PyTime_Check
    • PyTime_CheckExact
    • PyDelta_Check
    • PyDelta_CheckExact
    • PyTZInfo_Check
    • PyTZInfo_CheckExact
    • PyDateTime_FromTimestamp
    • PyDate_FromTimestamp
  • Deprecate the gc option for pyclass (e.g. #[pyclass(gc)]). Just implement a __traverse__ #[pymethod]. #2159
  • The ml_meth field of PyMethodDef is now represented by the PyMethodDefPointer union. 2166
  • 🗄 Deprecate the #[pyproto] traits. #2173

  ✂ Removed

  • ✂ Remove all functionality deprecated in PyO3 0.14. #2007
  • ✂ Remove Default impl for PyMethodDef. #2166
  • ✂ Remove PartialEq impl for Py and PyAny (use the new is() instead). #2183

  🛠 Fixed

  • 🛠 Fix undefined symbol for PyObject_HasAttr on PyPy. #2025
  • 🛠 Fix memory leak in PyErr::into_value. #2026
  • 🛠 Fix clippy warning needless-option-as-deref in code generated by #[pyfunction] and #[pymethods]. #2040
  • 🛠 Fix undefined behavior in PySlice::indices. #2061
  • 🛠 Fix the wrap_pymodule! macro using the wrong name for a #[pymodule] with a #[pyo3(name = "..")] attribute. #2081
  • 🛠 Fix magic methods in #[pymethods] accepting implementations with the wrong number of arguments. #2083
  • 🛠 Fix panic in #[pyfunction] generated code when a required argument following an Option was not provided. #2093
  • 🛠 Fixed undefined behaviour caused by incorrect ExactSizeIterator implementations. #2124
  • 🛠 Fix missing FFI definition PyCMethod_New on Python 3.9 and up. #2143
  • Add missing FFI definitions _PyLong_NumBits and _PyLong_AsByteArray on PyPy. #2146
  • 🛠 Fix memory leak in implementation of AsPyPointer for Option<T>. #2160
  • Fix FFI definition of _PyLong_NumBits to return size_t instead of c_int. #2161
  • 🛠 Fix TypeError thrown when argument parsing failed missing the originating causes. 2177

• v0.15.2 Changes

  April 14, 2022

  Packaging

  • 👍 Backport of PyPy 3.9 support from PyO3 0.16. #2262

• v0.15.1 Changes

  November 19, 2021

  ➕ Added

  • Add implementations for Py::as_ref() and Py::into_ref() for Py<PySequence>, Py<PyIterator> and Py<PyMapping>. #1682
  • ➕ Add PyTraceback type to represent and format Python tracebacks. #1977

  🔄 Changed

  • 👕 #[classattr] constants with a known magic method name (which is lowercase) no longer trigger lint warnings expecting constants to be uppercase. #1969

  🛠 Fixed

  • 🛠 Fix creating #[classattr] by functions with the name of a known magic method. #1969
  • Fix use of catch_unwind in allow_threads which can cause fatal crashes. #1989
  • 🛠 Fix build failure on PyPy when abi3 features are activated. #1991
  • 🛠 Fix mingw platform detection. #1993
  • Fix panic in __get__ implementation when accessing descriptor on type object. #1997

• v0.15.0 Changes

  November 03, 2021

  Packaging

  • pyo3's Cargo.toml now advertises links = "python" to inform Cargo that it links against libpython. #1819
  • ➕ Added optional anyhow feature to convert anyhow::Error into PyErr. #1822
  • 👌 Support Python 3.10. #1889
  • ➕ Added optional eyre feature to convert eyre::Report into PyErr. #1893
  • 👌 Support PyPy 3.8. #1948

  ➕ Added

  • Add PyList::get_item_unchecked and PyTuple::get_item_unchecked to get items without bounds checks. #1733
  • 👌 Support #[doc = include_str!(...)] attributes on Rust 1.54 and up. #1746
  • ➕ Add PyAny::py as a convenience for PyNativeType::py. #1751
  • ➕ Add implementation of std::ops::Index<usize> for PyList, PyTuple and PySequence. #1825
  • ➕ Add range indexing implementations of std::ops::Index for PyList, PyTuple and PySequence. #1829
  • ➕ Add PyMapping type to represent the Python mapping protocol. #1844
  • ➕ Add commonly-used sequence methods to PyList and PyTuple. #1849
  • ➕ Add as_sequence methods to PyList and PyTuple. #1860
  • ➕ Add support for magic methods in #[pymethods], intended as a replacement for #[pyproto]. #1864
  • ➕ Add abi3-py310 feature. #1889
  • ➕ Add PyCFunction::new_closure to create a Python function from a Rust closure. #1901
  • ➕ Add support for positional-only arguments in #[pyfunction]. #1925
  • ➕ Add PyErr::take to attempt to fetch a Python exception if present. #1957

  🔄 Changed

  • PyList, PyTuple and PySequence's APIs now accepts only usize indices instead of isize. #1733, #1802, #1803
  • PyList::get_item and PyTuple::get_item now return PyResult<&PyAny> instead of panicking. #1733
  • PySequence::in_place_repeat and PySequence::in_place_concat now return PyResult<&PySequence> instead of PyResult<()>, which is needed in case of immutable sequences such as tuples. #1803
  • PySequence::get_slice now returns PyResult<&PySequence> instead of PyResult<&PyAny>. #1829
  • 🗄 Deprecate PyTuple::split_from. #1804
  • 🗄 Deprecate PyTuple::slice, new method PyTuple::get_slice added with usize indices. #1828
  • 📜 Deprecate FFI definitions PyParser_SimpleParseStringFlags, PyParser_SimpleParseStringFlagsFilename, PyParser_SimpleParseFileFlags when building for Python 3.9. #1830
  • 📜 Mark FFI definitions removed in Python 3.10 PyParser_ASTFromString, PyParser_ASTFromStringObject, PyParser_ASTFromFile, PyParser_ASTFromFileObject, PyParser_SimpleParseStringFlags, PyParser_SimpleParseStringFlagsFilename, PyParser_SimpleParseFileFlags, PyParser_SimpleParseString, PyParser_SimpleParseFile, Py_SymtableString, and Py_SymtableStringObject. #1830
  • 🗄 #[pymethods] now handles magic methods similarly to #[pyproto]. In the future, #[pyproto] may be deprecated. #1864
  • ➕ Deprecate FFI definitions PySys_AddWarnOption, PySys_AddWarnOptionUnicode and PySys_HasWarnOptions. #1887
  • Deprecate #[call] attribute in favor of using fn __call__. #1929
  • Fix missing FFI definition _PyImport_FindExtensionObject on Python 3.10. #1942
  • 🔄 Change PyErr::fetch to panic in debug mode if no exception is present. #1957

  🛠 Fixed

  • 🛠 Fix building with a conda environment on Windows. #1873
  • 🛠 Fix panic on Python 3.6 when calling Python::with_gil with Python initialized but threading not initialized. #1874
  • 🛠 Fix incorrect linking to version-specific DLL instead of python3.dll when cross-compiling to Windows with abi3. #1880
  • 🛠 Fix FFI definition for PyTuple_ClearFreeList incorrectly being present for Python 3.9 and up. #1887
  • 🛠 Fix panic in generated #[derive(FromPyObject)] for enums. #1888
  • 🛠 Fix cross-compiling to Python 3.7 builds with the "m" abi flag. #1908
  • Fix __mod__ magic method fallback to __rmod__. #1934.
  • Fix missing FFI definition _PyImport_FindExtensionObject on Python 3.10. #1942

• v0.14.5 Changes

  September 05, 2021

  ➕ Added

  • 🏗 Make pyo3_build_config::InterpreterConfig and subfields public. #1848
  • ➕ Add resolve-config feature to the pyo3-build-config to control whether its build script does anything. #1856

  🛠 Fixed

  • 🛠 Fix 0.14.4 compile regression on s390x-unknown-linux-gnu target. #1850

• v0.14.4 Changes

  August 29, 2021

  🔄 Changed

  • 👍 Mark PyString::data as unsafe and disable it and some supporting PyUnicode FFI APIs (which depend on a C bitfield) on big-endian targets. #1834

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