Bump version to 0.10.0 (#919)

* Bump version to 0.10.0

* Apply suggestions from code review

Co-authored-by: David Hewitt <[email protected]>

* Improve CHANGELOG completeness and messaging

* ObjectProtocol was in prelude

Co-authored-by: David Hewitt <[email protected]>

Author: kngwyu

Diff for: CHANGELOG.md

@@ -5,39 +5,43 @@ 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]
+
+## [0.10.0]
 ### Added
-- `_PyDict_NewPresized`. [#849](https://github.com/PyO3/pyo3/pull/849)
-- `IntoPy<PyObject>` for `HashSet` and `BTreeSet`. [#864](https://github.com/PyO3/pyo3/pull/864)
-- `PyAny::dir`. [#886](https://github.com/PyO3/pyo3/pull/886)
-- `impl Clone` for `PyObject` and `Py<T>`. [#908](https://github.com/PyO3/pyo3/pull/908)
-- All builtin types (`PyList`, `PyTuple`, `PyDict`) etc. now implement `Deref<Target = PyAny>`. [#911](https://github.com/PyO3/pyo3/pull/911)
-- `PyCell<T>` now implements `Deref<Target = PyAny>`. [#911](https://github.com/PyO3/pyo3/pull/911)
-- Methods and associated constants can now be annotated with `#[classattr]` to define class attributes. [#905](https://github.com/PyO3/pyo3/pull/905) [#914](https://github.com/PyO3/pyo3/pull/914)
+- Add FFI definition `_PyDict_NewPresized`. [#849](https://github.com/PyO3/pyo3/pull/849)
+- Implement `IntoPy<PyObject>` for `HashSet` and `BTreeSet`. [#864](https://github.com/PyO3/pyo3/pull/864)
+- Add `PyAny::dir` method. [#886](https://github.com/PyO3/pyo3/pull/886)
+- Gate macros behind a `macros` feature (enabled by default). [#897](https://github.com/PyO3/pyo3/pull/897)
+- Add ability to define class attributes using `#[classattr]` on functions in `#[pymethods]`. [#905](https://github.com/PyO3/pyo3/pull/905)
+- Implement `Clone` for `PyObject` and `Py<T>`. [#908](https://github.com/PyO3/pyo3/pull/908)
+- Implement `Deref<Target = PyAny>` for all builtin types. (`PyList`, `PyTuple`, `PyDict` etc.) [#911](https://github.com/PyO3/pyo3/pull/911)
+- Implement `Deref<Target = PyAny>` for `PyCell<T>`. [#911](https://github.com/PyO3/pyo3/pull/911)
+- Add `#[classattr]` support for associated constants in `#[pymethods]`. [#914](https://github.com/PyO3/pyo3/pull/914)
 
 ### Changed
-- Panics from Rust will now be caught and raised as Python errors. [#797](https://github.com/PyO3/pyo3/pull/797)
-- `PyObject` and `Py<T>` reference counts are now decremented sooner after `drop()`. [#851](https://github.com/PyO3/pyo3/pull/851)
-  - When the GIL is held, the refcount is now decreased immediately on drop. (Previously would wait until just before releasing the GIL.)
-  - When the GIL is not held, the refcount is now decreased when the GIL is next acquired. (Previously would wait until next time the GIL was released.)
-- `FromPyObject` for `Py<T>` now works for a wider range of `T`, in particular for `T: PyClass`. [#880](https://github.com/PyO3/pyo3/pull/880)
-- Some functions such as `PyList::get_item` which return borrowed objects at the C ffi layer now return owned objects at the PyO3 layer, for safety reasons. [#890](https://github.com/PyO3/pyo3/pull/890)
-- The `GILGuard` returned from `Python::acquire_gil` will now only assume responsiblity for freeing owned references on drop if no other `GILPool` or `GILGuard` exists. This ensures that multiple calls to the safe api `Python::acquire_gil` cannot lead to dangling references. [#893](https://github.com/PyO3/pyo3/pull/893)
-- The trait `ObjectProtocol` has been removed, and all the methods from the trait have been moved to `PyAny`. [#911](https://github.com/PyO3/pyo3/pull/911)
-  - The exception to this is `ObjectProtocol::None`, which has simply been removed. Use `Python::None` instead.
-- No `#![feature(specialization)]` in user code. [#917](https://github.com/PyO3/pyo3/pull/917)
+- Panics will now be raised as a Python `PanicException`. [#797](https://github.com/PyO3/pyo3/pull/797)
+- Change `PyObject` and `Py<T>` reference counts to decrement immediately upon drop when the GIL is held. [#851](https://github.com/PyO3/pyo3/pull/851)
+- Allow `PyIterProtocol` methods to use either `PyRef` or `PyRefMut` as the receiver type. [#856](https://github.com/PyO3/pyo3/pull/856)
+- Change the implementation of `FromPyObject` for `Py<T>` to apply to a wider range of `T`, including all `T: PyClass`. [#880](https://github.com/PyO3/pyo3/pull/880)
+- Move all methods from the `ObjectProtocol` trait to the `PyAny` struct. [#911](https://github.com/PyO3/pyo3/pull/911)
+- Remove need for `#![feature(specialization)]` in crates depending on PyO3. [#917](https://github.com/PyO3/pyo3/pull/917)
 
 ### Removed
-- `PyMethodsProtocol` is now renamed to `PyMethodsImpl` and hidden. [#889](https://github.com/PyO3/pyo3/pull/889)
-- `num-traits` is no longer a dependency. [#895](https://github.com/PyO3/pyo3/pull/895)
-- `ObjectProtocol`. [#911](https://github.com/PyO3/pyo3/pull/911)
-- All `*ProtocolImpl` traits. [#917](https://github.com/PyO3/pyo3/pull/917)
+- Remove `PyMethodsProtocol` trait. [#889](https://github.com/PyO3/pyo3/pull/889)
+- Remove `num-traits` dependency. [#895](https://github.com/PyO3/pyo3/pull/895)
+- Remove `ObjectProtocol` trait. [#911](https://github.com/PyO3/pyo3/pull/911)
+- Remove `PyAny::None`. Users should use `Python::None` instead. [#911](https://github.com/PyO3/pyo3/pull/911)
+- Remove all `*ProtocolImpl` traits. [#917](https://github.com/PyO3/pyo3/pull/917)
 
 ### Fixed
-- `__radd__` and other `__r*__` methods now correctly work with operators. [#839](https://github.com/PyO3/pyo3/pull/839)
-- Garbage Collector causing random panics when traversing objects that were mutably borrowed. [#855](https://github.com/PyO3/pyo3/pull/855)
-- `&'static Py~` being allowed as arguments. [#869](https://github.com/PyO3/pyo3/pull/869)
-- `#[pyo3(get)]` for `Py<T>`. [#880](https://github.com/PyO3/pyo3/pull/880)
-- `allow_threads` will no longer cause segfaults in the event of panics inside the closure. [#912](https://github.com/PyO3/pyo3/pull/912)
+- Fix support for `__radd__` and other `__r*__` methods as implementations for Python mathematical operators. [#839](https://github.com/PyO3/pyo3/pull/839)
+- Fix panics during garbage collection when traversing objects that were already mutably borrowed. [#855](https://github.com/PyO3/pyo3/pull/855)
+- Prevent `&'static` references to Python objects as arguments to `#[pyfunction]` and `#[pymethods]`. [#869](https://github.com/PyO3/pyo3/pull/869)
+- Fix lifetime safety bug with `AsPyRef::as_ref`. [#876](https://github.com/PyO3/pyo3/pull/876)
+- Fix `#[pyo3(get)]` attribute on `Py<T>` fields. [#880](https://github.com/PyO3/pyo3/pull/880)
+- Fix segmentation faults caused by functions such as `PyList::get_item` returning borrowed objects when it was not safe to do so. [#890](https://github.com/PyO3/pyo3/pull/890)
+- Fix segmentation faults caused by nested `Python::acquire_gil` calls creating dangling references. [#893](https://github.com/PyO3/pyo3/pull/893)
+- Fix segmentatation faults when a panic occurs during a call to `Python::allow_threads`. [#912](https://github.com/PyO3/pyo3/pull/912)
 
 ## [0.9.2] - 2020-04-09
 ### Added
@@ -385,7 +389,8 @@ Yanked
 ### Added
 - Initial release
 
-[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.9.2...HEAD
+[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.10.0...HEAD
+[0.10.0]: https://github.com/pyo3/pyo3/compare/v0.9.2...v0.10.0
 [0.9.2]: https://github.com/pyo3/pyo3/compare/v0.9.1...v0.9.2
 [0.9.1]: https://github.com/pyo3/pyo3/compare/v0.9.0...v0.9.1
 [0.9.0]: https://github.com/pyo3/pyo3/compare/v0.8.5...v0.9.0

Diff for: Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyo3"
-version = "0.9.2"
+version = "0.10.0"
 description = "Bindings to Python interpreter"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 readme = "README.md"
@@ -25,7 +25,7 @@ libc = "0.2.62"
 num-bigint = { version = "0.2", optional = true }
 num-complex = { version = "0.2", optional = true }
 paste = { version = "0.1.6", optional = true }
-pyo3cls = { path = "pyo3cls", version = "=0.9.2", optional = true }
+pyo3cls = { path = "pyo3cls", version = "=0.10.0", optional = true }
 unindent = { version = "0.1.4", optional = true }
 
 [dev-dependencies]

Diff for: README.md

@@ -50,7 +50,7 @@ name = "string_sum"
 crate-type = ["cdylib"]
 
 [dependencies.pyo3]
-version = "0.9.2"
+version = "0.10.0"
 features = ["extension-module"]
 ```
 
@@ -95,7 +95,7 @@ Add `pyo3` to your `Cargo.toml` like this:
 
 ```toml
 [dependencies]
-pyo3 = "0.9.2"
+pyo3 = "0.10.0"
 ```
 
 Example program displaying the value of `sys.version` and the current user name:

Diff for: guide/src/get_started.md

@@ -44,7 +44,7 @@ name = "string_sum"
 crate-type = ["cdylib"]
 
 [dependencies.pyo3]
-version = "0.9.2"
+version = "0.10.0"
 features = ["extension-module"]
 ```
 
@@ -90,7 +90,7 @@ use it to run Python code, add `pyo3` to your `Cargo.toml` like this:
 
 ```toml
 [dependencies]
-pyo3 = "0.9.2"
+pyo3 = "0.10.0"
 ```
 
 Example program displaying the value of `sys.version` and the current user name:

Diff for: guide/src/migration.md

@@ -1,5 +1,38 @@
 # Appendix B: Migrating from older PyO3 versions
-This guide can help you upgrade code through breaking changes from one PyO3 version to the next. For a detailed list of all changes, see [CHANGELOG.md](https://github.com/PyO3/pyo3/blob/master/CHANGELOG.md)
+
+This guide can help you upgrade code through breaking changes from one PyO3 version to the next.
+For a detailed list of all changes, see [CHANGELOG.md](https://github.com/PyO3/pyo3/blob/master/CHANGELOG.md)
+
+## from 0.9.* to 0.10
+
+### `ObjectProtocol` is removed
+All methods are moved to [`PyAny`].
+And since now all native types (e.g., `PyList`) implements `Deref<Target=PyAny>`,
+all you need to do is remove `ObjectProtocol` from your code.
+Or if you use `ObjectProtocol` by `use pyo3::prelude::*`, you have to do nothing.
+
+Before:
+```rust,compile_fail
+use pyo3::ObjectProtocol;
+
+let gil = pyo3::Python::acquire_gil();
+let obj = gil.python().eval("lambda: 'Hi :)'", None, None).unwrap();
+let hi: &pyo3::types::PyString = obj.call0().unwrap().downcast().unwrap();
+assert_eq!(hi.len().unwrap(), 5);
+```
+
+After:
+```rust
+let gil = pyo3::Python::acquire_gil();
+let obj = gil.python().eval("lambda: 'Hi :)'", None, None).unwrap();
+let hi: &pyo3::types::PyString = obj.call0().unwrap().downcast().unwrap();
+assert_eq!(hi.len().unwrap(), 5);
+```
+
+### No `#![feature(specialization)]` in user code
+While PyO3 itself still requires specialization and nightly Rust,
+now you don't have to use `#![feature(specialization)]` in your crate.
+
 ## from 0.8.* to 0.9
 
 ### `#[new]` interface
@@ -191,10 +224,10 @@ impl PySequenceProtocol for ByteSequence {
 ```
 
 [`FromPyObject`]: https://docs.rs/pyo3/latest/pyo3/conversion/trait.FromPyObject.html
-
-[`PyCell`]: https://pyo3.rs/master/doc/pyo3/pycell/struct.PyCell.html
-[`PyBorrowMutError`]: https://pyo3.rs/master/doc/pyo3/pycell/struct.PyBorrowMutError.html
-[`PyRef`]: https://pyo3.rs/master/doc/pyo3/pycell/struct.PyRef.html
-[`PyRefMut`]: https://pyo3.rs/master/doc/pyo3/pycell/struct.PyRefMut.html
+[`PyAny`]: https://docs.rs/pyo3/latest/pyo3/types/struct.PyAny.html
+[`PyCell`]: https://docs.rs/pyo3/latest/pyo3/pycell/struct.PyCell.html
+[`PyBorrowMutError`]: https://docs.rs/pyo3/latest/pyo3/pycell/struct.PyBorrowMutError.html
+[`PyRef`]: https://docs.rs/pyo3/latest/pyo3/pycell/struct.PyRef.html
+[`PyRefMut`]: https://docs.rs/pyo3/latest/pyo3/pycell/struct.PyRef.html
 
 [`RefCell`]: https://doc.rust-lang.org/std/cell/struct.RefCell.html

Diff for: pyo3-derive-backend/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-derive-backend"
-version = "0.9.2"
+version = "0.10.0"
 description = "Code generation for PyO3 package"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 keywords = ["pyo3", "python", "cpython", "ffi"]

Diff for: pyo3cls/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyo3cls"
-version = "0.9.2"
+version = "0.10.0"
 description = "Proc macros for PyO3 package"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 keywords = ["pyo3", "python", "cpython", "ffi"]
@@ -16,4 +16,4 @@ proc-macro = true
 [dependencies]
 quote = "1"
 syn = { version = "1", features = ["full", "extra-traits"] }
-pyo3-derive-backend = { path = "../pyo3-derive-backend", version = "=0.9.2" }
+pyo3-derive-backend = { path = "../pyo3-derive-backend", version = "=0.10.0" }

Diff for: src/lib.rs

@@ -52,7 +52,7 @@
 //! crate-type = ["cdylib"]
 //!
 //! [dependencies.pyo3]
-//! version = "0.9.2"
+//! version = "0.10.0"
 //! features = ["extension-module"]
 //! ```
 //!
@@ -109,7 +109,7 @@
 //!
 //! ```toml
 //! [dependencies]
-//! pyo3 = "0.9.2"
+//! pyo3 = "0.10.0"
 //! ```
 //!
 //! Example program displaying the value of `sys.version`: