# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
## [Unreleased]
### Removed
* `PyToken` was removed due to unsoundness (See [#94](https://github.com/PyO3/pyo3/issues/94)).
* Removed the unnecessary type parameter from `PyObjectAlloc`
## [0.5.1] - 2018-11-24
### Fixed
* Fix undeterministic segfaults when creating many objects by kngwyu in [#281](https://github.com/PyO3/pyo3/pull/281)
## [0.5.0] - 2018-11-11
### Added
* `#[pyclass]` objects can now be returned from rust functions
* `PyComplex` by kngwyu in [#226](https://github.com/PyO3/pyo3/pull/226)
* `PyDict::from_sequence()`, equivalent to `dict([(key, val), ...])`
* Bindings for the `datetime` standard library types: `PyDate`, `PyTime`, `PyDateTime`, `PyTzInfo`, `PyDelta` with associated `ffi` types, by pganssle [#200](https://github.com/PyO3/pyo3/pull/200).
* `PyString`, `PyUnicode`, and `PyBytes` now have an `as_bytes()` method that returns `&[u8]`.
* `PyObjectProtocol::get_type_ptr()` by ijl in [#242](https://github.com/PyO3/pyo3/pull/242)
### Removed
* Removed most entries from the prelude. The new prelude is small and clear.
* Slowly removing specialization uses
* `PyString`, `PyUnicode`, and `PyBytes` no longer have a `data()` method
(replaced by `as_bytes()`) and `PyStringData` has been removed.
* The pyobject_extract macro
### Changed
* Removes the types from the root module and the prelude. They now live in `pyo3::types` instead.
* All exceptions are consturcted with `py_err` instead of `new`, as they return `PyErr` and not `Self`.
* `as_mut` and friends take and `&mut self` instead of `&self`
* `ObjectProtocol::call` now takes an `Option<&PyDict>` for the kwargs instead of an `IntoPyDictPointer`.
* `IntoPyDictPointer` was replace by `IntoPyDict` which doesn't convert `PyDict` itself anymore and returns a `PyDict` instead of `*mut PyObject`.
* `PyTuple::new` now takes an `IntoIterator` instead of a slice
* Updated to syn 0.15
* Splitted `PyTypeObject` into `PyTypeObject` without the create method and `PyTypeCreate` with requires `PyObjectAlloc<Self> + PyTypeInfo + Sized`.
* Ran `cargo edition --fix` which prefixed path with `crate::` for rust 2018
* Renamed `async` to `pyasync` as async will be a keyword in the 2018 edition.
* Starting to use `NonNull<*mut PyObject>` for Py and PyObject by ijl [#260](https://github.com/PyO3/pyo3/pull/260)
### Fixed
* Added an explanation that the GIL can temporarily be released even while holding a GILGuard.
* Lots of clippy errors
* Fix segfault on calling an unknown method on a PyObject
* Work around a [bug](https://github.com/rust-lang/rust/issues/55380) in the rust compiler by kngwyu [#252](https://github.com/PyO3/pyo3/pull/252)
* Fixed a segfault with subclassing pyo3 create classes and using `__class__` by kngwyu [#263](https://github.com/PyO3/pyo3/pull/263)
## [0.4.1] - 2018-08-20
### Fixed
* Fixed compilation on nightly since `use_extern_macros` was stabilized
### Changed
* PyTryFrom's error is always to `PyDowncastError`
### Removed
* The pyobject_downcast macro
## [0.4.0] - 2018-07-30
### Removed
* Conversions from tuples to PyDict due to [rust-lang/rust#52050](https://github.com/rust-lang/rust/issues/52050)
### Changed
* Merged both examples into one
* Rustfmt all the things :heavy_check_mark:
* Switched to [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
## [0.3.2] - 2018-07-22
### Changed
* Replaced `concat_idents` with mashup
## [0.3.1] - 2018-07-18
### Fixed
* Fixed scoping bug in pyobject_native_type that would break rust-numpy
## [0.3.0] - 2018-07-18
### Changed
* Upgraded to syn 0.14 which means much better error messages :tada:
* 128 bit integer support by [kngwyu](https://github.com/kngwyu) ([#137](https://github.com/PyO3/pyo3/pull/173))
* `proc_macro` has been stabilized on nightly ([rust-lang/rust#52081](https://github.com/rust-lang/rust/pull/52081)). This means that we can remove the `proc_macro` feature, but now we need the `use_extern_macros` from the 2018 edition instead.
* All proc macro are now prefixed with `py` and live in the prelude. This means you can use `#[pyclass]`, `#[pymethods]`, `#[pyproto]`, `#[pyfunction]` and `#[pymodinit]` directly, at least after a `use pyo3::prelude::*`. They were also moved into a module called `proc_macro`. You shouldn't use `#[pyo3::proc_macro::pyclass]` or other longer paths in attributes because `proc_macro_path_invoc` isn't going to be stabilized soon.
* Renamed the `base` option in the `pyclass` macro to `extends`.
* `#[pymodinit]` uses the function name as module name, unless the name is overrriden with `#[pymodinit(name)]`
* The guide is now properly versioned.
### Added
* A few internal macros became part of the public api ([#155](https://github.com/PyO3/pyo3/pull/155), [#186](https://github.com/PyO3/pyo3/pull/186))
* Always clone in getters. This allows using the get-annotation on all Clone-Types
## [0.2.7] - 2018-05-18
### Fixed
* Fix nightly breakage with proc_macro_path
## [0.2.6] - 2018-04-03
### Fixed
* Fix compatibility with TryFrom trait #137
## [0.2.5] - 2018-02-21
### Added
* CPython 3.7 support
### Fixed
* Embedded CPython 3.7b1 crashes on initialization #110
* Generated extension functions are weakly typed #108
* call_method*() crashes when the method does not exist #113
* Allow importing exceptions from nested modules #116
## [0.2.4] - 2018-01-19
### Added
* Allow to get mutable ref from PyObject #106
* Drop `RefFromPyObject` trait
* Add Python::register_any() method
### Fixed
* Fix impl `FromPyObject` for `Py<T>`
* Mark method that work with raw pointers as unsafe #95
## [0.2.3] - 11-27-2017
### Fixed
* Proper `c_char` usage #93
### Changed
* Rustup to 1.23.0-nightly 2017-11-07
### Removed
* Remove use of now unneeded 'AsciiExt' trait
## [0.2.2] - 09-26-2017
### Changed
* Rustup to 1.22.0-nightly 2017-09-30
## [0.2.1] - 09-26-2017
### Fixed
* Fix rustc const_fn nightly breakage
## [0.2.0] - 08-12-2017
### Changed
* Allow to add gc support without implementing PyGCProtocol #57
* Refactor `PyErr` implementation. Drop `py` parameter from constructor.
### Added
* Added inheritance support #15
* Added weakref support #56
* Added subclass support #64
* Added `self.__dict__` supoort #68
* Added `pyo3::prelude` module #70
* Better `Iterator` support for PyTuple, PyList, PyDict #75
* Introduce IntoPyDictPointer similar to IntoPyTuple #69
## 0.1.0 - 07-23-2017
### Added
* Initial release
[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.5.0...HEAD
[0.5.0]: https://github.com/pyo3/pyo3/compare/v0.4.1...v0.5.0
[0.4.1]: https://github.com/pyo3/pyo3/compare/v0.4.0...v0.4.1
[0.4.0]: https://github.com/pyo3/pyo3/compare/v0.3.2...v0.4.0
[0.3.2]: https://github.com/pyo3/pyo3/compare/v0.3.1...v0.3.2
[0.3.1]: https://github.com/pyo3/pyo3/compare/v0.3.0...v0.3.1
[0.3.0]: https://github.com/pyo3/pyo3/compare/v0.2.7...v0.3.0
[0.2.7]: https://github.com/pyo3/pyo3/compare/v0.2.6...v0.2.7
[0.2.6]: https://github.com/pyo3/pyo3/compare/v0.2.5...v0.2.6
[0.2.5]: https://github.com/pyo3/pyo3/compare/v0.2.4...v0.2.5
[0.2.4]: https://github.com/pyo3/pyo3/compare/v0.2.3...v0.2.4
[0.2.3]: https://github.com/pyo3/pyo3/compare/v0.2.2...v0.2.3
[0.2.2]: https://github.com/pyo3/pyo3/compare/v0.2.1...v0.2.2
[0.2.1]: https://github.com/pyo3/pyo3/compare/v0.2.0...v0.2.1
[0.2.0]: https://github.com/pyo3/pyo3/compare/v0.1.0...v0.2.0