We’ve just uploaded mypy 1.12 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.
Support Python 3.12 Syntax for Generics (PEP 695)
Support for the new type parameter syntax introduced in Python 3.12 is now enabled by default,
documented, and no longer experimental. It was available through a feature flag in
mypy 1.11 as an experimental feature.
This example demonstrates the new syntax:
# Generic function
def f[T](https://github.com/python/mypy/blob/master/x: T) -> T: ...
reveal_type(f(1)) # Revealed type is 'int'
Generic class
class C[T]:
def init(self, x: T) -> None:
self.x = x
c = C('a')
reveal_type(c.x) # Revealed type is 'str'
Fix: nested context managers could incorrectly be analyzed to flag a missing branch on the last context manager, as described in issue 1876. This is now fixed.
Fix: the missing branch message about not exiting a module had an extra “didn’t,” as described in issue 1873. This is now fixed.
Fix: a final wildcard match/case clause assigning to a name (case _ as value) was incorrectly marked as a missing branch. This is now fixed, closing issue 1860.
Fewer things are considered branches now. Lambdas, comprehensions, and generator expressions are no longer marked as missing branches if they don’t complete execution. Closes issue 1852.
Fix: the HTML report didn’t properly show multi-line f-strings that end with a backslash continuation. This is now fixed, closing issue 1836, thanks to LiuYinCarl and Marco Ricci.
Fix: the LCOV report now has correct line numbers (fixing issue 1846) and better branch descriptions for BRDA records (fixing issue 1850). There are other changes to lcov also, including a new configuration option line_checksums to control whether line checksums are included in the lcov report. The default is false. To keep checksums set it to true. All this work is thanks to Zack Weinberg (pull 1849 and pull 1851).
Fixed the docs for multi-line regex exclusions, closing issue 1863.
Fixed a potential crash in the C tracer, closing issue 1835, thanks to Jan Kühle.
Fix: nested context managers could incorrectly be analyzed to flag a missing
branch on the last context manager, as described in issue 1876_. This is
now fixed.
Fix: the missing branch message about not exiting a module had an extra
"didn't," as described in issue 1873_. This is now fixed.
Fix: a final wildcard match/case clause assigning to a name (case _ as value) was incorrectly marked as a missing branch. This is now fixed,
closing issue 1860_.
Fewer things are considered branches now. Lambdas, comprehensions, and
generator expressions are no longer marked as missing branches if they don't
complete execution. Closes issue 1852_.
Fix: the HTML report didn't properly show multi-line f-strings that end with
a backslash continuation. This is now fixed, closing issue 1836, thanks
to LiuYinCarl and Marco Ricci <pull 1838_>.
Fix: the LCOV report now has correct line numbers (fixing issue 1846) and
better branch descriptions for BRDA records (fixing issue 1850). There
are other changes to lcov also, including a new configuration option
:ref:line_checksums <config_lcov_line_checksums> to control whether line
checksums are included in the lcov report. The default is false. To keep
checksums set it to true. All this work is thanks to Zack Weinberg
(pull 1849_ and pull 1851_).
Fixed the docs for multi-line regex exclusions, closing issue 1863_.
Fixed a potential crash in the C tracer, closing issue 1835, thanks to
Jan Kühle <pull 1843_>.
#12446: Avoid calling @property (and other instance descriptors) during fixture discovery -- by asottile{.interpreted-text role="user"}
#12659: Fixed the issue of not displaying assertion failure differences when using the parameter --import-mode=importlib in pytest>=8.1.
#12667: Fixed a regression where type change in [ExceptionInfo.errisinstance]{.title-ref} caused [mypy]{.title-ref} to fail.
#12744: Fixed typing compatibility with Python 3.9 or less -- replaced [typing.Self]{.title-ref} with [typing_extensions.Self]{.title-ref} -- by Avasam{.interpreted-text role="user"}
#12745: Fixed an issue with backslashes being incorrectly converted in nodeid paths on Windows, ensuring consistent path handling across environments.
#6682: Fixed bug where the verbosity levels where not being respected when printing the "msg" part of failed assertion (as in assert condition, msg).
#9422: Fix bug where disabling the terminal plugin via -p no:terminal would cause crashes related to missing the verbose option.
-- by GTowers1{.interpreted-text role="user"}
Improved documentation
#12663: Clarify that the [pytest_deselected]{.title-ref} hook should be called from [pytest_collection_modifyitems]{.title-ref} hook implementations when items are deselected.
#12678: Remove erroneous quotes from [tmp_path_retention_policy]{.title-ref} example in docs.
Miscellaneous internal changes
#12769: Fix typos discovered by codespell and add codespell to pre-commit hooks.
Commits
d0f136f build(deps): Bump pypa/gh-action-pypi-publish from 1.10.0 to 1.10.1 (#12790)
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Bumps the python-packages group with 4 updates in the / directory: pre-commit, mypy, coverage[toml] and pytest.
Updates
pre-commit
from 3.8.0 to 4.0.1Release notes
Sourced from pre-commit's releases.
Changelog
Sourced from pre-commit's changelog.
Commits
cc4a522
v4.0.1772d7d4
Merge pull request #3324 from pre-commit/migrate-config-purelib222c62b
fix migrate-config for purelib yaml3d5548b
Merge pull request #3323 from pre-commit/pre-commit-ci-update-config4235a87
[pre-commit.ci] pre-commit autoupdatedbccd57
v4.0.0d07e529
Merge pull request #3320 from pre-commit/remove-python-venv801b956
remove deprecated python_venv aliasa2f7b80
Merge pull request #3315 from pre-commit/warn-deprecated-stage-names-on-initd317223
add warning for deprecates stages for remote repos on initUpdates
mypy
from 1.11.1 to 1.12.0Changelog
Sourced from mypy's changelog.
... (truncated)
Commits
f2a39b1
Update version to 1.12.0b4ec37a
Add one more 1.12 changelog item (#17936)cc1c679
Better handling of generic functions in partial plugin (#17925)d65a013
Add latest 1.12 changes to changelog (#17921)2e38965
Fix union callees with functools.partial (#17903)c5d3673
Document ReadOnly (PEP 705) (#17905)964a7a5
Make ReadOnly TypedDict items covariant (#17904)24bfb34
Include CHANGELOG.md in sdists (#17882)21d46ed
documentation for TypeIs (#17821)c692943
Improvements to functools.partial of types (#17898)Updates
coverage[toml]
from 7.6.0 to 7.6.3Release notes
Sourced from coverage[toml]'s releases.
Changelog
Sourced from coverage[toml]'s changelog.
... (truncated)
Commits
342a4cb
docs: sample HTML for 7.6.3df03796
docs: prep for 7.6.3378c321
fix: nested context managers shouldn't cause a phantom missing branch #1876c8902ed
build: pypy 3.9 doesn't seem to be available nightlyc59a77b
docs(build): put a header on the GitHub releases65ac395
docs: fix a link in the changes2d3e72c
docs: add coverage-simple-excludes to the docs474a363
fix: didn't-ectomy. #18735229fc3
docs: mention 1852 is fixed6a4506f
build(docs): upgrade doc dependenciesUpdates
pytest
from 8.3.2 to 8.3.3Release notes
Sourced from pytest's releases.
Commits
d0f136f
build(deps): Bump pypa/gh-action-pypi-publish from 1.10.0 to 1.10.1 (#12790)972f307
Prepare release version 8.3.30dabdcf
Include co-authors in release announcement (#12795) (#12797)a9910a4
Do not discover properties when iterating fixtures (#12781) (#12788)0f10b6b
Fix issue with slashes being turned into backslashes on Windows (#12760) (#12...300d13d
Merge pull request #12785 from pytest-dev/patchback/backports/8.3.x/57cccf7f4...e5d32c7
Merge pull request #12784 from svenevs/fix/docs-example-parametrize-minor-typobc913d1
Streamline checks for verbose option (#12706) (#12778)01cfcc9
Fix typos and introduce codespell pre-commit hook (#12769) (#12774)4873394
doc: Remove past training (#12772) (#12773)Dependabot 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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