We’ve just uploaded mypy 1.9 to the Python Package Index (PyPI). 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.
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)
We are planning to enable
local partial types (enabled via the
--local-partial-types flag) later this year by default. This change
was announced years ago, but now it's finally happening. This is a
major backward-incompatible change, so we'll probably include it as
part of the upcoming mypy 2.0 release. This makes daemon and
non-daemon mypy runs have the same behavior by default.
Local partial types can also be enabled in the mypy config file:
local_partial_types = True
We are looking at providing a tool to make it easier to migrate
projects to use --local-partial-types, but it's not yet clear whether
this is practical. The migration usually involves adding some
explicit type annotations to module-level and class-level variables.
Basic Support for Type Parameter Defaults (PEP 696)
This release contains new experimental support for type parameter
defaults (PEP 696). Please try it
out! This feature was contributed by Marc Mueller.
Since this feature will be officially introduced in the next Python
feature release (3.13), you will need to import TypeVar, ParamSpec
or TypeVarTuple from typing_extensions to use defaults for now.
This example adapted from the PEP defines a default for BotT:
from typing import Generic
from typing_extensions import TypeVar
This release is not a usual bug fix release -- it contains features and improvements, being a follow up
to 8.1.0, which has been yanked from PyPI.
:::
Features
#11475: Added the new consider_namespace_packages{.interpreted-text role="confval"} configuration option, defaulting to False.
If set to True, pytest will attempt to identify modules that are part of namespace packages when importing modules.
#11653: Added the new verbosity_test_cases{.interpreted-text role="confval"} configuration option for fine-grained control of test execution verbosity.
See Fine-grained verbosity <pytest.fine_grained_verbosity>{.interpreted-text role="ref"} for more details.
Improvements
#10865: pytest.warns{.interpreted-text role="func"} now validates that warnings.warn{.interpreted-text role="func"} was called with a [str]{.title-ref} or a [Warning]{.title-ref}.
Currently in Python it is possible to use other types, however this causes an exception when warnings.filterwarnings{.interpreted-text role="func"} is used to filter those warnings (see [CPython #103577](python/cpython#103577) for a discussion).
While this can be considered a bug in CPython, we decided to put guards in pytest as the error message produced without this check in place is confusing.
#11311: When using --override-ini for paths in invocations without a configuration file defined, the current working directory is used
as the relative directory.
Previoulsy this would raise an AssertionError{.interpreted-text role="class"}.
#11475: --import-mode=importlib <import-mode-importlib>{.interpreted-text role="ref"} now tries to import modules using the standard import mechanism (but still without changing :pysys.path{.interpreted-text role="data"}), falling back to importing modules directly only if that fails.
This means that installed packages will be imported under their canonical name if possible first, for example app.core.models, instead of having the module name always be derived from their path (for example .env310.lib.site_packages.app.core.models).
#11801: Added the iter_parents() <_pytest.nodes.Node.iter_parents>{.interpreted-text role="func"} helper method on nodes.
It is similar to listchain <_pytest.nodes.Node.listchain>{.interpreted-text role="func"}, but goes from bottom to top, and returns an iterator, not a list.
#11850: Added support for sys.last_exc{.interpreted-text role="data"} for post-mortem debugging on Python>=3.12.
#11962: In case no other suitable candidates for configuration file are found, a pyproject.toml (even without a [tool.pytest.ini_options] table) will be considered as the configuration file and define the rootdir.
#11978: Add --log-file-mode option to the logging plugin, enabling appending to log-files. This option accepts either "w" or "a" and defaults to "w".
Previously, the mode was hard-coded to be "w" which truncates the file before logging.
- Fix crash with fresh subprocess, if the build backend is setuptools automatically enable fresh subprocesses for
build backend calls - by :user:`gaborbernat`. (:issue:`3235`)
v4.14.0 (2024-03-05)
Features - 4.14.0
Support enabling fresh subprocess for packaging build backends via :ref:fresh_subprocess - by :user:gaborbernat. (:issue:3227)
Allow plugins attaching additional information to --version via tox_append_version_info method in the plugin
module - by :user:gaborbernat. (:issue:3234)
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Bumps the development-dependencies group with 4 updates: mypy, pytest, ruff and tox.
Updates
mypy
from 1.8.0 to 1.9.0Changelog
Sourced from mypy's changelog.
... (truncated)
Commits
5ff46f8
Remove +dev.155909a
[Release 1.9] Unsupport targetting 3.7. (#16883) (#16900)6615cab
[Release 1.9] Stubtest: ignore a new protocol dunder (#16895) (#16899)b956e6a
stubtest: Private parameters can be omitted (#16507)ede0b20
Bump ruff to 0.2.0 (#16870)7bdd61f
stubgen: Fix crash on star unpack of TypeVarTuple (#16869)8c2ef9d
Update hashes in sync-typeshed.py following recent typeshed sync0dd4b6f
Revert use ofParamSpec
forfunctools.wraps
dd12a2d
Revert typeshed ctypes changed132999
Revert sum literal integer change (#13961)Updates
pytest
from 8.0.2 to 8.1.1Release notes
Sourced from pytest's releases.
... (truncated)
Commits
81653ee
Adjust changelog manually for 8.1.1e60b4b9
Prepare release version 8.1.115fbe57
[8.1.x] Revert legacy path removals (#12093)86c3aab
[8.1.x] Do not import duplicated modules with --importmode=importlib (#12077)5b82b0c
[8.1.x] Yank version 8.1.0 (#12076)0a53681
Merge pull request #12054 from pytest-dev/release-8.1.0b9a167f
Prepare release version 8.1.000043f7
Merge pull request #12038 from bluetech/fixtures-rm-arg2indexf4e1025
Merge pull request #12048 from bluetech/fixture-teardown-excgroup43492f5
Merge pull request #12051 from jakkdl/test_debugging_pythonbreakpointUpdates
ruff
from 0.3.0 to 0.3.2Release notes
Sourced from ruff's releases.
... (truncated)
Changelog
Sourced from ruff's changelog.
... (truncated)
Commits
a892fc7
Bump version to v0.3.2 (#10304)a067d87
Fix incorrectParameter
range for*args
and**kwargs
(#10283)b64f2ea
Formatter: Improve single-with item formatting for Python 3.8 or older (#10276)4bce801
Fix unstable with-items formatting (#10274)a56d42f
Refactor with statement formatting to have explicit layouts (#10296)1d97f27
Start tracking quoting style in the AST (#10298)965adbe
Fix trailing kwargs end of line comment after slash (#10297)c504d7a
Track quoting style in the tokenizer (#10256)72c9f7e
Include actual conditions in E712 diagnostics (#10254)57be3fc
Treattyping.Annotated
subscripts as type definitions (#10285)Updates
tox
from 4.13.0 to 4.14.1Release notes
Sourced from tox's releases.
Changelog
Sourced from tox's changelog.
Commits
acbef2d
release 4.14.1969fbec
Fix fresh subprocesses and allow duplicate register config calls for the core...d37cb08
release 4.14.05356d96
Allow plugins to attach data to --version (#3234)717e27f
Support fresh subprocess for build backends (#3233)0fd872d
Bump pypa/gh-action-pypi-publish from 1.8.11 to 1.8.12 (#3230)ed447c4
Fix linkcheck failing (#3229)57783e3
[pre-commit.ci] pre-commit autoupdate (#3226)c024fe2
Fix issue/PR number in 4.13.0 changelogDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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