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 a milestone: it fixes Black's first CVE security vulnerability. If you
run Black on untrusted input, or if you habitually put thousands of leading tab
characters in your docstrings, you are strongly encouraged to upgrade immediately to fix
CVE-2024-21503.
This release also fixes a bug in Black's AST safety check that allowed Black to make
incorrect changes to certain f-strings that are valid in Python 3.12 and higher.
Stable style
Don't move comments along with delimiters, which could cause crashes (#4248)
Strengthen AST safety check to catch more unsafe changes to strings. Previous versions
of Black would incorrectly format the contents of certain unusual f-strings containing
nested strings with the same quote type. Now, Black will crash on such strings until
support for the new f-string syntax is implemented. (#4270)
Fix a bug where line-ranges exceeding the last code line would not work as expected
(#4273)
Performance
Fix catastrophic performance on docstrings that contain large numbers of leading tab
characters. This fixes
CVE-2024-21503.
(#4278)
Documentation
Note what happens when --check is used with --quiet (#4236)
24.2.0
Stable style
Fixed a bug where comments where mistakenly removed along with redundant parentheses
(#4218)
Preview style
Move the hug_parens_with_braces_and_square_brackets feature to the unstable style
due to an outstanding crash and proposed formatting tweaks (#4198)
Fixed a bug where base expressions caused inconsistent formatting of ** in tenary
expression (#4154)
Checking for newline before adding one on docstring that is almost at the line limit
(#4185)
Remove redundant parentheses in case statement if guards (#4214).
This release is a milestone: it fixes Black's first CVE security vulnerability. If you
run Black on untrusted input, or if you habitually put thousands of leading tab
characters in your docstrings, you are strongly encouraged to upgrade immediately to fix
CVE-2024-21503.
This release also fixes a bug in Black's AST safety check that allowed Black to make
incorrect changes to certain f-strings that are valid in Python 3.12 and higher.
Stable style
Don't move comments along with delimiters, which could cause crashes (#4248)
Strengthen AST safety check to catch more unsafe changes to strings. Previous versions
of Black would incorrectly format the contents of certain unusual f-strings containing
nested strings with the same quote type. Now, Black will crash on such strings until
support for the new f-string syntax is implemented. (#4270)
Fix a bug where line-ranges exceeding the last code line would not work as expected
(#4273)
Performance
Fix catastrophic performance on docstrings that contain large numbers of leading tab
characters. This fixes
CVE-2024-21503.
(#4278)
Documentation
Note what happens when --check is used with --quiet (#4236)
24.2.0
Stable style
Fixed a bug where comments where mistakenly removed along with redundant parentheses
(#4218)
Preview style
Move the hug_parens_with_braces_and_square_brackets feature to the unstable style
due to an outstanding crash and proposed formatting tweaks (#4198)
Fixed a bug where base expressions caused inconsistent formatting of ** in tenary
expression (#4154)
Checking for newline before adding one on docstring that is almost at the line limit
(#4185)
Remove redundant parentheses in case statement if guards (#4214).
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.
New method page.add_locator_handler(locator, handler) registers a callback that will be invoked when specified element becomes visible and may block Playwright actions. The callback can get rid of the overlay. Here is an example that closes a cookie dialog when it appears.
# Setup the handler.
page.add_locator_handler(
page.get_by_role("heading", name="Hej! You are in control of your cookies."),
lambda: page.get_by_role("button", name="Accept all").click(),
)
# Write the test as usual.
page.goto("https://www.ikea.com/")
page.get_by_role("link", name="Collection of blue and white").click()
expect(page.get_by_role("heading", name="Light and easy")).to_be_visible()
[orm] [performance] [bug] [regression] Adjusted the fix made in #10570, released in 2.0.23, where new
logic was added to reconcile possibly changing bound parameter values
across cache key generations used within the _orm.with_expression()
construct. The new logic changes the approach by which the new bound
parameter values are associated with the statement, avoiding the need to
deep-copy the statement which can result in a significant performance
penalty for very deep / complex SQL constructs. The new approach no longer
requires this deep-copy step.
[orm] [bug] [regression] Fixed regression caused by #9779 where using the "secondary" table
in a relationship and_() expression would fail to be aliased to match
how the "secondary" table normally renders within a
_sql.Select.join() expression, leading to an invalid query.
[engine] [usecase] Added new core execution option
_engine.Connection.execution_options.preserve_rowcount. When
set, the cursor.rowcount attribute from the DBAPI cursor will be
unconditionally memoized at statement execution time, so that whatever
value the DBAPI offers for any kind of statement will be available using
the _engine.CursorResult.rowcount attribute from the
_engine.CursorResult. This allows the rowcount to be accessed for
statments such as INSERT and SELECT, to the degree supported by the DBAPI
in use. The engine_insertmanyvalues also supports this option and
will ensure _engine.CursorResult.rowcount is correctly set for a
bulk INSERT of rows when set.
[asyncio] [bug] An error is raised if a QueuePool or other non-asyncio pool class
is passed to _asyncio.create_async_engine(). This engine only
accepts asyncio-compatible pool classes including
AsyncAdaptedQueuePool. Other pool classes such as
NullPool are compatible with both synchronous and asynchronous
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Bumps the python group with 7 updates:
0.35.1
0.35.2
1.8.0
1.9.0
3.0.3
3.1.0
24.1.1
24.3.0
8.0.0
8.1.1
1.41.2
1.42.0
2.0.26
2.0.28
Updates
eventlet
from 0.35.1 to 0.35.2Changelog
Sourced from eventlet's changelog.
Commits
edd9e7e
Update changelog for version 0.35.2 (#920)a23fd0e
Fix tool.setuptools/packages list (#921)51e3c49
Dnspython 2.6.1 - Address DoS via the Tudoor mechanism (CVE-2023-29483)b6f6e7c
add asyncio into the doc hub page (#918)96a3940
clean obsolete python 2 code from the ssl module (#915)06ec630
Add get_server_info to db_pool.py (#324)dfcc939
wsgi: Handle Timeouts from applications (#911)799dabc
[Fix] shrinks window before connecting (#905)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
pylint
from 3.0.3 to 3.1.0Commits
053c2c3
Bump pylint to 3.1.0, update changelogc954636
Upgrade release documentation, and contributors.txt7300ed2
Discover.pyi
files (#9241)9dbf3df
Merge maintenance 3.0.x into main following 3.0.4 release (#9459)28e89b0
Remove changelog fragments pertaining to 3.0.44332ea1
Merge branch 'maintenance/3.0.x' into main following 3.0.4 release8115381
Bump pylint to 3.0.4, update changelog (#9458)4bf3524
[false-negative] Fix for consider-using-min/max-builtin (#9127)8c24b1e
[pre-commit.ci] pre-commit autoupdate (#9448)f499686
Update astroid version to 3.1.0 (#9457)Updates
black
from 24.1.1 to 24.3.0Release notes
Sourced from black's releases.
... (truncated)
Changelog
Sourced from black's changelog.
... (truncated)
Commits
552baf8
Prepare release 24.3.0 (#4279)f000936
Fix catastrophic performance in lines_with_leading_tabs_expanded() (#4278)7b5a657
Fix --line-ranges behavior when ranges are at EOF (#4273)1abcffc
Use regex where we ignore case on windows (#4252)719e674
Fix 4227: Improve documentation for --quiet --check (#4236)e5510af
update plugin url for Thonny (#4259)6af7d11
Fix AST safety check false negative (#4270)f03ee11
Ensureblib2to3.pygram
is initialized before use (#4224)e4bfedb
fix: Don't move comments while splitting delimiters (#4248)d0287e1
Make trailing comma logic more concise (#4202)Updates
pytest
from 8.0.0 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
playwright
from 1.41.2 to 1.42.0Release notes
Sourced from playwright's releases.
Commits
665af8d
Revert "fix: datetime serialisation (#2314)"2ab641a
Revert "test: fix deprecated datetime serialisation (follow-up to #2314)"58551ad
chore(roll): roll Playwright to v1.42.1 (#2340)f6071ee
build(deps): bump wheel from 0.41.2 to 0.42.0 (#2324)0d2899a
build(deps): bump twisted from 23.10.0 to 24.3.0 (#2337)07efec1
build(deps): bump types-pyopenssl from 24.0.0.20240130 to 24.0.0.20240228 (#2...274ea8f
build(deps): bump setuptools from 68.2.2 to 69.1.1 (#2339)2dd251c
build(deps): bump types-requests from 2.31.0.10 to 2.31.0.20240218 (#2326)9517a9a
build(deps): bump objgraph from 3.6.0 to 3.6.1 (#2327)84a62e4
build(deps): bump pyopenssl from 23.2.0 to 24.0.0 (#2325)Updates
sqlalchemy
from 2.0.26 to 2.0.28Release notes
Sourced from sqlalchemy's releases.
... (truncated)
Commits
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