v5

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v1.4.0

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==================

Features

• Added decorator functionality to Signal as a convenient way to add a callback -- by @Vizonex.
  #&#8203;699 <https://github.com/aio-libs/aiosignal/pulls/699>_

• Improved type safety by allowing callback parameters to be type checked (typing-extensions is now required for Python <3.13).
  Parameters for a Signal callback should now be defined like Signal[int, str] -- by @​Vizonex and @​Dreamsorcerer.
  #&#8203;699 <https://github.com/aio-libs/aiosignal/pulls/699>, #&#8203;710 <https://github.com/aio-libs/aiosignal/pulls/710>

Misc

• Removed the sphinxcontrib-asyncio documentation dependency.
  #&#8203;528 <https://github.com/aio-libs/aiosignal/pull/528>_

v6.1.0

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===================

• Improve LFUCache insertion performance by switching to an
  implementation based on the cacheing <https://pypi.org/project/cacheing/>_ library.

• Update CI environment.

v6.0.0

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===================

• Require Python 3.9 or later (breaking change).

• Remove MRUCache and the @func.mru_cache decorator (breaking
  change).

• Add an optional condition parameter to the @cached and
  @cachedmethod decorators, which, when used with a
  threading.Condition instance, should improve cache stampede <https://en.wikipedia.org/wiki/Cache_stampede>_ issues in massively
  parallel environments. Note that this will inflict some performance
  penalty, and therefore has to be enabled explicitly.

• Convert the cachetools.func decorators to use a
  threading.Condition instance to deal with cache stampede <https://en.wikipedia.org/wiki/Cache_stampede>_ issues. Note that
  this may result in a noticable performance degradation, depending
  on your actual use case.

• Deprecate support for cache(self) returning None to suppress
  caching with the @cachedmethod decorator.

• Improve documentation.

• Update CI environment.

v2025.8.3

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v2025.7.14

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v2025.7.9

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v2025.6.15

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v3.4.3

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Changed

• mypy(c) is no longer a required dependency at build time if CHARSET_NORMALIZER_USE_MYPYC isn't set to 1. (#​595) (#​583)
• automatically lower confidence on small bytes samples that are not Unicode in detect output legacy function. (#​391)

Added

• Custom build backend to overcome inability to mark mypy as an optional dependency in the build phase.
• Support for Python 3.14

Fixed

• sdist archive contained useless directories.
• automatically fallback on valid UTF-16 or UTF-32 even if the md says it's noisy. (#​633)

Misc

• SBOM are automatically published to the relevant GitHub release to comply with regulatory changes.
  Each published wheel comes with its SBOM. We choose CycloneDX as the format.
• Prebuilt optimized wheel are no longer distributed by default for CPython 3.7 due to a change in cibuildwheel.

v8.2.1

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Released 2025-05-20

• Fix flag value handling for flag options with a provided type. :issue:2894
  :issue:2897 :pr:2930
• Fix shell completion for nested groups. :issue:2906 :pr:2907
• Flush sys.stderr at the end of CliRunner.invoke. :issue:2682
• Fix EOF handling for stdin input in CliRunner. :issue:2787

v1.7.0

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======

(2025-06-09)

Features

• Added deepcopy support to FrozenList -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:659.

Packaging updates and notes for downstreams

• Fixed an issue where frozenlist binary wheels would be built with debugging symbols and line tracing enabled, which significantly impacted performance. Line tracing is now disabled by default and can only be enabled explicitly -- by :user:bdraco.

  This change ensures that production builds are optimized for performance. Developers who need line tracing for debugging purposes can still enable it by:

  1. Setting the FROZENLIST_CYTHON_TRACING environment variable
  2. Using the --config-setting=with-cython-tracing=true option with pip

  Related issues and pull requests on GitHub:
  :issue:660.

• Enabled PIP_CONSTRAINT environment variable in the build configuration to ensure the pinned Cython version from requirements/cython.txt is used during wheel builds.

  Related issues and pull requests on GitHub:
  :issue:661.

v1.6.2

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======

(2025-06-03)

No significant changes.

v1.6.1

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======

(2025-06-02)

Bug fixes

• Correctly use cimport for including PyBool_FromLong -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  :issue:653.

Packaging updates and notes for downstreams

• Exclude _frozenlist.cpp from bdists/wheels -- by :user:musicinmybrain.

  Related issues and pull requests on GitHub:
  :issue:649.

• Updated to use Cython 3.1 universally across the build path -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  :issue:654.

v2.25.1

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Bug Fixes

• Allow BackgroundConsumer To Inform Caller of Fatal Exceptions with Optional Callback (3206c01)

v2.25.0

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Features

• Add protobuf runtime version to x-goog-api-client header (#​812) (118bd96)
• Support dynamic retry backoff values (#​793) (70697a3)

Bug Fixes

• Resolve issue where pre-release versions of dependencies are installed (#​808) (1ca7973)

v2.40.3

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Bug Fixes

• Auth fetch token from default endpoint (#​1779) (88891cc)
• Remove unnecessary call to mds service (#​1769) (7c61c7d)
• Retry 504 errors (#​1767) (554f967)

v2.40.2

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Bug Fixes

• Remove sync response logs in AuthorizedSession (97ed1c8)
• Update test to consider new error message from cryptography (#​1765) (44e38b6)

v1.74.0

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This is release 1.74.0 (gee) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

• [OTel C++, Posix EE] Plumb TCP write timestamps and metrics to OTel tracers. (#​39946)
• [EventEngine] Fix Python reconnect issues: use iomgr backup poller when EE is disabled. (#​39894)
• [Python] Upgrade Pytype (Part - 1). (#​39816)
• [Python] Upgrade black. (#​39774)
• [event_engine] Implement fork support in Posix Event Engine. (#​38980)
• [http2] Fix GRPC_ARG_HTTP2_STREAM_LOOKAHEAD_BYTES for when BDP is disabled. (#​39585)

Objective-C

• [dep] Upgrade Protobuf Version 31.1. (#​39916)

PHP

• [PHP] Fully qualify stdClass with global namespace. (#​39996)
• [php] Fix PHPDoc so that UnaryCall defines the proper return type. (#​37563)
• fix typing of nullable parameters. (#​39199)

Python

• Fix gRPC Python docs website layout - use spaces optimally. (#​40073)

Ruby

• [Ruby] Add rubygems support for linux-gnu and linux-musl platforms . (#​40174)
• [ruby] enable EE fork support. (#​39786)
• [ruby] Return nil for c functions expected to return a VALUE. (#​39214)
• [ruby] remove connectivity state watch thread, fix cancellations from spurious signals. (#​39409)
• [ruby] Drop Ruby 3.0 support. (#​39607)

v1.73.1

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This is release 1.73.1 (gradient) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Python

• [Backport of #​39894 to v1.73.x] Fix the issue with gRPC Python Client not reconnecting in certain situations: #​38290, #​39113, #​39631 (#​39950).

v1.73.0

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This is release 1.73.0 (gradient) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

As of this version, gRPC on MacOS & iOS will utilize Abseil's synchronization features, aligning it with other platforms. Should you encounter any issues due to this update, you can disable it by enabling GPR_DISABLE_ABSEIL_SYNC. If you do this, please report any problems by filing a bug at https://github.com/grpc/grpc.

• [Dep] Update Protobuf to v31.0. (#​39392)
• [Core] Added GPR_DISABLE_ABSEIL_SYNC. (#​39562)
• [xds_override_host] pass through per-endpoint args when creating subchannels. (#​39532)
• Expose GRPC_OPENSSL_CLEANUP_TIMEOUT to control shutdown grace period. (#​39297)
• [URI] fix parsing of user_info in proxy settings. (#​39004)
• [EventEngine] Fix busy loop in thread pool when shutting down. (#​39258)
• [Dep] Added a flag to build with openssl instead of boringssl. (#​39188)
• [EventEngine] Cleanup: EventEngine client, listener, and dns experiments are on by default on all platforms. (#​39079)

C++

• [OpenCensus] Mark OpenCensus and dependent APIs as deprecated. (#​39554)

Python

• [Python] Pin Cython to 3.1.1. (#​39609)
• [Python] grpc_tools: make PythonGrpcGenerator handle dot . in proto paths the same way as native Generator/PyiGenerator. (#​39586)

Ruby

• [Ruby] add remove_unused_artifacts to opt build. (#​39593)

v1.72.2

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This is release 1.72.2 (gusto) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Python

• [Backport of #​39894 to v1.72.x] Fix the issue with gRPC Python Client not reconnecting in certain situations: #​38290, #​39113, #​39631. (#​39949)

v1.72.1

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This is release gRPC Core 1.72.1 (gusto).

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

C++

• [Backport of #​39266 to v1.71.x] Protect grpc generated sources from unwanted system macros (#​39484).

Python

• [Backport of #​39609 to v1.71.x] Pin Cython to 3.1.1 (#​39632). This addresses several issues:
  • #​39588 Using inconsistent Cython version in released platform-specific wheels within the same grpcio release.
  • cython/cython#6878 Several published grpcio wheels were built with Cython 3.1.0 and are affected by Cython memory leak issue when using AsyncIO APIs (grpc.aio.*).
• [Backport of #​39418 to v1.71.x] Fix Python 3.12 MacOS universal release artifact (#​39504).

v1.72.0

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This is release gRPC Core 1.72.0 (gusto).

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes.

v1.71.2

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This is release 1.71.2 (gears) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

C++

• [Backport of #​39266 to v1.71.x] Protect grpc generated sources from unwanted system macros (#​39484).

Python

• [Backport of #​39894 to v1.71.x] Fix the issue with gRPC Python Client not reconnecting in certain situations: #​38290, #​39113, #​39631 (#​39948).
• [Backport of #​39609 to v1.71.x] Pin Cython to 3.1.1 (#​39636). This addresses several issues:
  • #​39588 Using inconsistent Cython version in released platform-specific wheels within the same grpcio release.
  • cython/cython#6878 Several published grpcio wheels were built with Cython 3.1.0 and are affected by Cython memory leak issue when using AsyncIO APIs (grpc.aio.*).

v1.8.2

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v1.8.1

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Added

• add helper to convert nodes to matchers by @​zsol in https://github.com/Instagram/LibCST/pull/1351

Updated

• Avoid raising bare Exception by @​zaicruvoir1rominet in https://github.com/Instagram/LibCST/pull/1168
• Upgrade PyYAML-ft version and use new module name by @​lysnikolaou in https://github.com/Instagram/LibCST/pull/1353

New Contributors

• @​lysnikolaou made their first contribution in https://github.com/Instagram/LibCST/pull/1353

Full Changelog: Instagram/LibCST@v1.8.0...v1.8.1

v1.8.0

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Added

• Allow configuring empty formatter lists in codemod CLI by @​ngoldbaum in https://github.com/Instagram/LibCST/pull/1319
• Publish several new binary wheels
  • macos intel by @​hadialqattan in https://github.com/Instagram/LibCST/pull/1316
  • windows arm64 by @​zsol in https://github.com/Instagram/LibCST/pull/1304
  • 3.13 CPython free-threaded by @​zsol in https://github.com/Instagram/LibCST/pull/1333
  • (only on test.pypi.org) 3.14 and 3.14 CPython free-threaded by @​amyreese and @​zsol in https://github.com/Instagram/LibCST/pull/1345 and https://github.com/Instagram/LibCST/pull/1331
• Enable support for free-threaded CPython by @​zsol in https://github.com/Instagram/LibCST/pull/1295 and https://github.com/Instagram/LibCST/pull/1335

Updated

• update pyo3 to 0.25 by @​ngoldbaum in https://github.com/Instagram/LibCST/pull/1324
• Replace multiprocessing with ProcessPoolExecutor by @​zsol in https://github.com/Instagram/LibCST/pull/1294
• Support pipe syntax for Union types in codegen by @​zsol in https://github.com/Instagram/LibCST/pull/1336

New Contributors

• @​hadialqattan made their first contribution in https://github.com/Instagram/LibCST/pull/1316

Full Changelog: Instagram/LibCST@v1.7.0...v1.8.0

v6.6.4

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=====

(2025-08-11)

Bug fixes

• Fixed MutliDict & CIMultiDict memory leak when deleting values or clearing them
  -- by :user:Vizonex

  Related issues and pull requests on GitHub:
  :issue:1233.

Contributor-facing changes

• The type preciseness coverage report generated by MyPy <https://mypy-lang.org>__ is now uploaded to Coveralls <https://coveralls.io/github/aio-libs/multidict>__ and
  will not be included in the Codecov views <https://app.codecov.io/gh/aio-libs/multidict>__ going forward
  -- by :user:webknjaz.

  Related issues and pull requests on GitHub:
  :issue:1122, :issue:1231.

• Added memory leak test for popping or deleting attributes from a multidict to prevent future issues or bogus claims.
  -- by :user:Vizonex

  Related issues and pull requests on GitHub:
  :issue:1233.

v6.6.3

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=====

(2025-06-30)

Bug fixes

• Fixed inconsistencies generated by the C implementation of _md_shrink() which might later lead to assertion failures and crash -- by :user:Romain-Geissler-1A.

  Related issues and pull requests on GitHub:
  :issue:1229.

v6.6.2

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v6.6.1

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=====

(2025-06-28)

Bug fixes

• If :meth:multidict.MultiDict.extend, :meth:multidict.MultiDict.merge, or :meth:multidict.MultiDict.update raises an exception, now the multidict internal state is correctly restored.
  Patch by :user:asvetlov.

  Related issues and pull requests on GitHub:
  :issue:1215.

Contributor-facing changes

• Fixed setuptools deprecation warning about the license specification -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  :issue:1216.

• Fix compiler warnings and convert them to errors -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  :issue:1217.

v6.6.0

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v6.5.1

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=====

(2025-06-24)

Bug fixes

• Fixed a bug in C implementation when multidict is resized and it has deleted slots.

  The bug was introduced by multidict 6.5.0 release.

  Patch by :user:asvetlov.

  Related issues and pull requests on GitHub:
  :issue:1195.

Contributor-facing changes

• A pair of code formatters for Python and C have been configured in the pre-commit tool.

  Related issues and pull requests on GitHub:
  :issue:1123.

• Shorted fixture parametrization ids.

  For example, test_keys_view_xor[case-insensitive-pure-python-module] becomes test_keys_view_xor[ci-py] -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  :issue:1192.

• The :file:reusable-cibuildwheel.yml workflow has been refactored to
  be more generic and :file:ci-cd.yml now holds all the configuration
  toggles -- by :user:webknjaz.

  Related issues and pull requests on GitHub:
  :issue:1193.

v6.5.0

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=====

(2025-06-17)

.. note::

The release was yanked because of :issue:1195, multidict 6.5.1 should be used
instead.

Features

• Replace internal implementation from an array of items to hash table.
  algorithmic complexity for lookups is switched from O(N) to O(1).

  The hash table is very similar to :class:dict from CPython but it allows keys duplication.

  The benchmark shows 25-50% boost for single lookups, x2-x3 for bulk updates, and x20 for
  some multidict view operations. The gain is not for free:
  :class:~multidict.MultiDict.add and :class:~multidict.MultiDict.extend are 25-50%
  slower now. We consider it as acceptable because the lookup is much more common
  operation that addition for the library domain.

  Related issues and pull requests on GitHub:
  :issue:1128.

Contributor-facing changes

• Builds have been added for arm64 Windows
  wheels and the reusable-build-wheel.yml
  template has been modified to allow for
  an os value (windows-11-arm) which
  does not end with the -latest postfix.

  Related issues and pull requests on GitHub:
  :issue:1167.

v6.4.4

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=====

(2025-05-19)

Bug fixes

• Fixed a segmentation fault when calling :py:meth:multidict.MultiDict.setdefault with a single argument -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1160.

• Fixed a segmentation fault when attempting to directly instantiate view objects
  (multidict._ItemsView, multidict._KeysView, multidict._ValuesView) -- by :user:bdraco.

  View objects now raise a proper :exc:TypeError with the message "cannot create '...' instances directly"
  when direct instantiation is attempted.

  View objects should only be created through the proper methods: :py:meth:multidict.MultiDict.items,
  :py:meth:multidict.MultiDict.keys, and :py:meth:multidict.MultiDict.values.

  Related issues and pull requests on GitHub:
  :issue:1164.

Miscellaneous internal changes

• :class:multidict.MultiDictProxy was refactored to rely only on
  :class:multidict.MultiDict public interface and don't touch any implementation
  details.

  Related issues and pull requests on GitHub:
  :issue:1150.

• Multidict views were refactored to rely only on
  :class:multidict.MultiDict API and don't touch any implementation
  details.

  Related issues and pull requests on GitHub:
  :issue:1152.

• Dropped internal _Impl class from pure Python implementation, both pure Python and C
  Extension follows the same design internally now.

  Related issues and pull requests on GitHub:
  :issue:1153.

v0.3.2

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=====

(2025-06-09)

Improved documentation

• Fixed incorrect decorator usage in the :func:~propcache.api.under_cached_property example code -- by :user:meanmail.

  Related issues and pull requests on GitHub:
  :issue:109.

Packaging updates and notes for downstreams

• Updated to use Cython 3.1 universally across the build path -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  :issue:117.

• Made Cython line tracing opt-in via the with-cython-tracing build config setting -- by :user:bdraco.

  Previously, line tracing was enabled by default in :file:pyproject.toml, which caused build issues for some users and made wheels nearly twice as slow.

  Now line tracing is only enabled when explicitly requested via pip install . --config-setting=with-cython-tracing=true or by setting the PROPCACHE_CYTHON_TRACING environment variable.

  Related issues and pull requests on GitHub:
  :issue:118.

v8.4.1

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pytest 8.4.1 (2025-06-17)

Bug fixes

• #​13461: Corrected _pytest.terminal.TerminalReporter.isatty to support
  being called as a method. Before it was just a boolean which could
  break correct code when using -o log_cli=true).

• #​13477: Reintroduced pytest.PytestReturnNotNoneWarning{.interpreted-text role="class"} which was removed by accident in pytest [8.4]{.title-ref}.

  This warning is raised when a test functions returns a value other than None, which is often a mistake made by beginners.

  See return-not-none{.interpreted-text role="ref"} for more information.

• #​13497: Fixed compatibility with Twisted 25+.

Improved documentation

• #​13492: Fixed outdated warning about faulthandler not working on Windows.

v8.4.0

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pytest 8.4.0 (2025-06-02)

Removals and backward incompatible breaking changes

• #​11372: Async tests will now fail, instead of warning+skipping, if you don't have any suitable plugin installed.

• #​12346: Tests will now fail, instead of raising a warning, if they return any value other than None.

• #​12874: We dropped support for Python 3.8 following its end of life (2024-10-07).

• #​12960: Test functions containing a yield now cause an explicit error. They have not been run since pytest 4.0, and were previously marked as an expected failure and deprecation warning.

  See the docs <yield tests deprecated>{.interpreted-text role="ref"} for more information.

Deprecations (removal in next major release)

• #​10839: Requesting an asynchronous fixture without a [pytest_fixture_setup]{.title-ref} hook that resolves it will now give a DeprecationWarning. This most commonly happens if a sync test requests an async fixture. This should have no effect on a majority of users with async tests or fixtures using async pytest plugins, but may affect non-standard hook setups or autouse=True. For guidance on how to work around this warning see sync-test-async-fixture{.interpreted-text role="ref"}.

New features

• #​11538: Added pytest.RaisesGroup{.interpreted-text role="class"} as an equivalent to pytest.raises{.interpreted-text role="func"} for expecting ExceptionGroup{.interpreted-text role="exc"}. Also adds pytest.RaisesExc{.interpreted-text role="class"} which is now the logic behind pytest.raises{.interpreted-text role="func"} and used as parameter to pytest.RaisesGroup{.interpreted-text role="class"}. RaisesGroup includes the ability to specify multiple different expected exceptions, the structure of nested exception groups, and flags for emulating except* <except_star>{.interpreted-text role="ref"}. See assert-matching-exception-groups{.interpreted-text role="ref"} and docstrings for more information.

• #​12081: Added capteesys{.interpreted-text role="fixture"} to capture AND pass output to next handler set by --capture=.

• #​12504: pytest.mark.xfail{.interpreted-text role="func"} now accepts pytest.RaisesGroup{.interpreted-text role="class"} for the raises parameter when you expect an exception group. You can also pass a pytest.RaisesExc{.interpreted-text role="class"} if you e.g. want to make use of the check parameter.

• #​12713: New [--force-short-summary]{.title-ref} option to force condensed summary output regardless of verbosity level.

  This lets users still see condensed summary output of failures for quick reference in log files from job outputs, being especially useful if non-condensed output is very verbose.

• #​12749: pytest traditionally collects classes/functions in the test module namespace even if they are imported from another file.

  For example:

contents of src/domain.py

class Testament: ...

contents of tests/test_testament.py

from domain import Testament

def test_testament(): ...
```

In this scenario with the default options, pytest will collect the class [Testament]{.title-ref} from [tests/test_testament.py]{.title-ref} because it starts with [Test]{.title-ref}, even though in this case it is a production class being imported in the test module namespace.

This behavior can now be prevented by setting the new `collect_imported_tests`{.interpreted-text role="confval"} configuration option to `false`, which will make pytest collect classes/functions from test files **only** if they are defined in that file.

\-- by `FreerGit`{.interpreted-text role="user"}

• #​12765: Thresholds to trigger snippet truncation can now be set with truncation_limit_lines{.interpreted-text role="confval"} and truncation_limit_chars{.interpreted-text role="confval"}.

  See truncation-params{.interpreted-text role="ref"} for more information.

• #​13125: console_output_style{.interpreted-text role="confval"} now supports times to show execution time of each test.

• #​13192: pytest.raises{.interpreted-text role="func"} will now raise a warning when passing an empty string to match, as this will match against any value. Use match="^$" if you want to check that an exception has no message.

• #​13192: pytest.raises{.interpreted-text role="func"} will now print a helpful string diff if matching fails and the match parameter has ^ and $ and is otherwise escaped.

• #​13192: You can now pass with pytest.raises(check=fn): <pytest.raises>{.interpreted-text role="func"}, where fn is a function which takes a raised exception and returns a boolean. The raises fails if no exception was raised (as usual), passes if an exception is raised and fn returns True (as well as match and the type matching, if specified, which are checked before), and propagates the exception if fn returns False (which likely also fails the test).

• #​13228: hidden-param{.interpreted-text role="ref"} can now be used in id of pytest.param{.interpreted-text role="func"} or in
  ids of Metafunc.parametrize <pytest.Metafunc.parametrize>{.interpreted-text role="py:func"}.
  It hides the parameter set from the test name.

• #​13253: New flag: --disable-plugin-autoload <disable_plugin_autoload>{.interpreted-text role="ref"} which works as an alternative to PYTEST_DISABLE_PLUGIN_AUTOLOAD{.interpreted-text role="envvar"} when setting environment variables is inconvenient; and allows setting it in config files with addopts{.interpreted-text role="confval"}.

Improvements in existing functionality

• #​10224: pytest's short and long traceback styles (how-to-modifying-python-tb-printing{.interpreted-text role="ref"})
  now have partial 657{.interpreted-text role="pep"} support and will show specific code segments in the
  traceback.

  ================================= FAILURES =================================
  _______________________ test_gets_correct_tracebacks _______________________
  
  test_tracebacks.py:12: in test_gets_correct_tracebacks
      assert manhattan_distance(p1, p2) == 1
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
  test_tracebacks.py:6: in manhattan_distance
      return abs(point_1.x - point_2.x) + abs(point_1.y - point_2.y)
                             ^^^^^^^^^
  E   AttributeError: 'NoneType' object has no attribute 'x'
  

  -- by ammaraskar{.interpreted-text role="user"}

• #​11118: Now pythonpath{.interpreted-text role="confval"} configures [$PYTHONPATH]{.title-ref} earlier than before during the initialization process, which now also affects plugins loaded via the [-p]{.title-ref} command-line option.

  -- by millerdev{.interpreted-text role="user"}

• #​11381: The type parameter of the parser.addini method now accepts ["int"]{.title-ref} and "float" parameters, facilitating the parsing of configuration values in the configuration file.

  Example:

  def pytest_addoption(parser):
      parser.addini("int_value", type="int", default=2, help="my int value")
      parser.addini("float_value", type="float", default=4.2, help="my float value")

  The [pytest.ini]{.title-ref} file:

  [pytest]
  int_value = 3
  float_value = 5.4

• #​11525: Fixtures are now clearly represented in the output as a "fixture object", not as a normal function as before, making it easy for beginners to catch mistakes such as referencing a fixture declared in the same module but not requested in the test function.

  -- by the-compiler{.interpreted-text role="user"} and glyphack{.interpreted-text role="user"}

• #​12426: A warning is now issued when pytest.mark.usefixtures ref{.interpreted-text role="ref"} is used without specifying any fixtures. Previously, empty usefixtures markers were silently ignored.

• #​12707: Exception chains can be navigated when dropped into Pdb in Python 3.13+.

• #​12736: Added a new attribute [name]{.title-ref} with the fixed value ["pytest tests"]{.title-ref} to the root tag [testsuites]{.title-ref} of the junit-xml generated by pytest.

  This attribute is part of many junit-xml specifications and is even part of the [junit-10.xsd]{.title-ref} specification that pytest's implementation is based on.

• #​12943: If a test fails with an exceptiongroup with a single exception, the contained exception will now be displayed in the short test summary info.

• #​12958: A number of unraisable <unraisable>{.interpreted-text role="ref"} enhancements:

  • Set the unraisable hook as early as possible and unset it as late as possible, to collect the most possible number of unraisable exceptions.
  • Call the garbage collector just before unsetting the unraisable hook, to collect any straggling exceptions.
  • Collect multiple unraisable exceptions per test phase.
  • Report the tracemalloc{.interpreted-text role="mod"} allocation traceback (if available).
  • Avoid using a generator based hook to allow handling StopIteration{.interpreted-text role="class"} in test failures.
  • Report the unraisable exception as the cause of the pytest.PytestUnraisableExceptionWarning{.interpreted-text role="class"} exception if raised.
  • Compute the repr of the unraisable object in the unraisable hook so you get the latest information if available, and should help with resurrection of the object.

• #​13010: pytest.approx{.interpreted-text role="func"} now can compare collections that contain numbers and non-numbers mixed.

• #​13016: A number of threadexception <unraisable>{.interpreted-text role="ref"} enhancements:

  • Set the excepthook as early as possible and unset it as late as possible, to collect the most possible number of unhandled exceptions from threads.
  • Collect multiple thread exceptions per test phase.
  • Report the tracemalloc{.interpreted-text role="mod"} allocation traceback (if available).
  • Avoid using a generator based hook to allow handling StopIteration{.interpreted-text role="class"} in test failures.
  • Report the thread exception as the cause of the pytest.PytestUnhandledThreadExceptionWarning{.interpreted-text role="class"} exception if raised.
  • Extract the name of the thread object in the excepthook which should help with resurrection of the