diff --git a/CHANGELOG.md b/CHANGELOG.md index bae881656865..86e4dc91aaec 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,9 +1,64 @@ # Mypy Release Notes -## Next release +## Mypy 1.9 + +We’ve just uploaded mypy 1.9 to the Python Package Index ([PyPI](https://pypi.org/project/mypy/)). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows: + + python3 -m pip install -U mypy + +You can read the full documentation for this release on [Read the Docs](http://mypy.readthedocs.io). + +#### Breaking Changes + +Because the version of typeshed we use in mypy 1.9 doesn't support 3.7, neither does mypy 1.9. (Jared Hance, PR [16883](https://github.com/python/mypy/pull/16883)) + +#### Basic PEP 696 Support + +This release contains new support for PEP 696 (https://peps.python.org/pep-0696). Please try it out! (Contributed by Marc Mueller). + +#### Type-checking improvements + * Fix duplicated TypeVarTuple test (Jelle Zijlstra, PR [16853](https://github.com/python/mypy/pull/16853)) + * Fix missing type store for overloads (Marc Mueller, PR [16803](https://github.com/python/mypy/pull/16803)) + * Fix `'WriteToConn' object has no attribute 'flush'` (Charlie Denton, PR [16801](https://github.com/python/mypy/pull/16801)) + * Update TypeAlias error messages to remove colon (Marc Mueller, PR [16831](https://github.com/python/mypy/pull/16831)) + * Support narrowing unions that include type[None] (Christoph Tyralla, PR [16315](https://github.com/python/mypy/pull/16315)) + * Support TypedDict functional syntax as class base type (anniel-stripe, PR [16703](https://github.com/python/mypy/pull/16703)) + * Accept multiline quoted annotations (Shantanu, PR [16765](https://github.com/python/mypy/pull/16765)) + * Allow unary + in Literal (Jelle Zijlstra, PR [16729](https://github.com/python/mypy/pull/16729)) + * Speed up finding function type variables (Jukka Lehtosalo, PR [16562](https://github.com/python/mypy/pull/16562)) + * Substitute type variables in return type of static methods (Kouroche Bouchiat, PR [16670](https://github.com/python/mypy/pull/16670)) + * Consider TypeVarTuple to be invariant (Marc Mueller, PR [16759](https://github.com/python/mypy/pull/16759)) + * Add `alias` support to `field()` in `attrs` plugin (Nikita Sobolev, PR [16610](https://github.com/python/mypy/pull/16610)) + * Improve attrs hashability detection (Tin Tvrtković, PR [16556](https://github.com/python/mypy/pull/16556)) + +#### Documentation Updates + * Document --enable-incomplete-feature possible values in "mypy --help" (Froger David, PR [16661](https://github.com/python/mypy/pull/16661)) + * Update new type system discussion links (thomaswhaley, PR [16841](https://github.com/python/mypy/pull/16841)) + * Docs: Add missing class instantiation to cheat sheet (Aleksi Tarvainen, PR [16817](https://github.com/python/mypy/pull/16817)) + * Fix typo in getting_started.rst (zipperer, PR [16700](https://github.com/python/mypy/pull/16700)) + * Document how evil `--no-strict-optional` is (Shantanu, PR [16731](https://github.com/python/mypy/pull/16731)) + * Improve mypy daemon documentation note about local partial types (Makonnen Makonnen, PR [16782](https://github.com/python/mypy/pull/16782)) + * Fix numbering error in docs (Stefanie Molin, PR [16838](https://github.com/python/mypy/pull/16838)) + * Various docs improvements (Shantanu, PR [16836](https://github.com/python/mypy/pull/16836)) + +#### Stubtest Improvements + * Stubtest will ignore private function/method parameters when they are missing from the stub. +Private parameters names start with a single underscore and have a default +(PR [16507](https://github.com/python/mypy/pull/16507)). + * Stubtest: ignore a new protocol dunder (Alex Waygood, PR [16895](https://github.com/python/mypy/pull/16895)) + * stubtest: Private parameters can be omitted (Sebastian Rittau, PR [16507](https://github.com/python/mypy/pull/16507)) + * stubtest: Add support for setting enum members to "..." (Jelle Zijlstra, PR [16807](https://github.com/python/mypy/pull/16807)) + * stubtest: adjust symtable logic (Shantanu, PR [16823](https://github.com/python/mypy/pull/16823)) + * stubtest: fix pos-only handling in overload resolution (Shantanu, PR [16750](https://github.com/python/mypy/pull/16750)) + +#### Stubgen Improvements + * stubgen: Fix crash on star unpack of TypeVarTuple (Ali Hamdan, PR [16869](https://github.com/python/mypy/pull/16869)) + * Fix failing stubgen tests (Ali Hamdan, PR [16779](https://github.com/python/mypy/pull/16779)) + * stubgen: use PEP 604 unions everywhere (Ali Hamdan, PR [16519](https://github.com/python/mypy/pull/16519)) + * Improve stubgen tests (Fabian Keller, PR [16760](https://github.com/python/mypy/pull/16760)) + * stubgen: Do not ignore property deleter (Ali Hamdan, PR [16781](https://github.com/python/mypy/pull/16781)) + * Support type stub generation for `staticmethod` (WeilerMarcel, PR [14934](https://github.com/python/mypy/pull/14934)) -Stubtest will ignore private function/method parameters when they are missing from the stub. Private parameters -names start with a single underscore and have a default (PR [16507](https://github.com/python/mypy/pull/16507)). ## Mypy 1.8