Update dependency multidict to v6.4.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
multidict	==6.0.5 -> ==6.4.3

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Release Notes

aio-libs/multidict (multidict)

v6.4.3

Compare Source

=====

(2025-04-10)

Bug fixes

• Fixed building the library in debug mode.

  Related issues and pull requests on GitHub:
  :issue:1144.

• Fixed custom PyType_GetModuleByDef() when non-heap type object was passed.

  Related issues and pull requests on GitHub:
  :issue:1147.

Packaging updates and notes for downstreams

• Added the ability to build in debug mode by setting :envvar:MULTIDICT_DEBUG_BUILD in the environment -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1145.

---

v6.4.2

Compare Source

=====

(2025-04-09)

Bug fixes

• Fixed a segmentation fault when creating subclassed :py:class:~multidict.MultiDict objects on Python < 3.11 -- by :user:bdraco.

  The problem first appeared in 6.4.0

  Related issues and pull requests on GitHub:
  :issue:1141.

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v6.4.1

Compare Source

=====

(2025-04-09)

No significant changes.

---

v6.4.0

Compare Source

=====

(2025-04-09)

Bug fixes

• Fixed a memory leak creating new :class:~multidict.istr objects -- by :user:bdraco.

  The leak was introduced in 6.3.0

  Related issues and pull requests on GitHub:
  :issue:1133.

• Fixed reference counting when calling :py:meth:multidict.MultiDict.update -- by :user:bdraco.

  The leak was introduced in 4.4.0

  Related issues and pull requests on GitHub:
  :issue:1135.

Features

• Switched C Extension to use heap types and the module state.

  Related issues and pull requests on GitHub:
  :issue:1125.

• Started building armv7l wheels -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1127.

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v6.3.2

Compare Source

=====

(2025-04-03)

Bug fixes

• Resolved a memory leak by ensuring proper reference count decrementation -- by :user:asvetlov and :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1121.

---

v6.3.1

Compare Source

=====

(2025-04-01)

Bug fixes

• Fixed keys not becoming case-insensitive when :class:multidict.CIMultiDict is created by passing in a :class:multidict.MultiDict -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1112.

• Fixed the pure Python version mutating the original :class:multidict.MultiDict when creating a new :class:multidict.CIMultiDict from an existing one when keyword arguments are also passed -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1113.

• Prevented crashing with a segfault when :func:repr is called for recursive multidicts and their proxies and views.

  Related issues and pull requests on GitHub:
  :issue:1115.

---

v6.3.0

Compare Source

=====

(2025-03-31)

Bug fixes

• Set operations for KeysView and ItemsView of case-insensitive multidicts and their proxies are processed in case-insensitive manner.

  Related issues and pull requests on GitHub:
  :issue:965.

• Rewrote :class:multidict.CIMultiDict and it proxy to always return
  :class:multidict.istr keys. istr is derived from :class:str,
  thus the change is backward compatible.

  The performance boost is about 15% for some operations for C Extension,
  pure Python implementation have got a visible (15% - 230%) speedup as well.

  Related issues and pull requests on GitHub:
  :issue:1097.

• Fixed a crash when extending a multidict from multidict proxy if C Extensions were used.

  Related issues and pull requests on GitHub:
  :issue:1100.

Features

• Implemented a custom parser for METH_FASTCALL | METH_KEYWORDS protocol
  -- by :user:asvetlov.

  The patch re-enables fast call protocol in the :py:mod:multidict C Extension.

  Speedup is about 25%-30% for the library benchmarks for Python 3.12+.

  Related issues and pull requests on GitHub:
  :issue:1070.

• The C-extension no longer pre-allocates a Python exception object in
  lookup-related methods of :py:class:~multidict.MultiDict when the
  passed-in key is not found but default value is provided.

  Namely, this affects :py:meth:MultiDict.getone() <multidict.MultiDict.getone>, :py:meth:MultiDict.getall() <multidict.MultiDict.getall>, :py:meth:MultiDict.get() <multidict.MultiDict.get>, :py:meth:MultiDict.pop() <multidict.MultiDict.pop>, :py:meth:MultiDict.popone() <multidict.MultiDict.popone>, and :py:meth:MultiDict.popall() <multidict.MultiDict.popall>.

  Additionally, the :py:class:~multidict.MultiDict comparison with
  regular :py:class:dict\ ionaries is now about 60% faster
  on Python 3.13+ in the fallback-to-default case.

  Related issues and pull requests on GitHub:
  :issue:1078.

• Implemented __repr__() for C Extension classes in C.

  The speedup is about 2.5 times.

  Related issues and pull requests on GitHub:
  :issue:1081.

• Made C version of :class:multidict.istr pickleable.

  Related issues and pull requests on GitHub:
  :issue:1098.

• Optimized multidict creation and extending / updating if C Extensions are used.

  The speedup is between 25% and 70% depending on the usage scenario.

  Related issues and pull requests on GitHub:
  :issue:1101.

• :meth:multidict.MultiDict.popitem is changed to remove
  the latest entry instead of the first.

  It gives O(1) amortized complexity.

  The standard :meth:dict.popitem removes the last entry also.

  Related issues and pull requests on GitHub:
  :issue:1105.

Contributor-facing changes

• Started running benchmarks for the pure Python implementation in addition to the C implementation -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1092.

• The the project-wide Codecov_ metric is no longer reported
  via GitHub Checks API. The combined value is not very useful
  because one of the sources (MyPy) cannot reach 100% with the
  current state of the ecosystem. We may want to reconsider in
  the future. Instead, we now have two separate
  “runtime coverage” metrics for library code and tests.
  They are to be kept at 100% at all times.
  And the “type coverage” metric will remain advisory, at a
  lower threshold.

  The default patch metric check is renamed to “runtime”
  to better reflect its semantics. This one will also require
  100% coverage.
  Another “typing” patch coverage metric is now reported
  alongside it. It's considered advisory, just like its
  project counterpart.

  When looking at Codecov_, one will likely want to look at
  MyPy and pytest flags separately. It is usually best to
  avoid looking at the PR pages that sometimes display
  combined coverage incorrectly.

  The change additionally disables the deprecated GitHub
  Annotations integration in Codecov_.

  Finally, the badge coloring range now starts at 100%.

  .. image:: https://codecov.io/gh/aio-libs/multidict/branch/master/graph/badge.svg?flag=pytest
  :target: https://codecov.io/gh/aio-libs/multidict?flags\[]=pytest
  :alt: Coverage metrics

  -- by :user:webknjaz

  Related issues and pull requests on GitHub:
  :issue:1093.

Miscellaneous internal changes

• Synchronized :file:pythoncapi_compat.h with the latest available version.

  Related issues and pull requests on GitHub:
  :issue:1063.

• Moved registering ABCs for C Extension classes from C to Python.

  Related issues and pull requests on GitHub:
  :issue:1083.

• Refactored the internal pair_list implementation.

  Related issues and pull requests on GitHub:
  :issue:1084.

• Implemented views comparison and disjoints in C instead of Python helpers.

  The performance boost is about 40%.

  Related issues and pull requests on GitHub:
  :issue:1096.

---

v6.2.0

Compare Source

======

(2025-03-17)

Bug fixes

• Fixed in checks throwing an exception instead of returning :data:False when testing non-strings.

  Related issues and pull requests on GitHub:
  :issue:1045.

• Fixed a leak when the last accessed module in PyInit__multidict() init is not released.

  Related issues and pull requests on GitHub:
  :issue:1061.

Features

• Implemented support for the free-threaded build of CPython 3.13 -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  :issue:1015.

Packaging updates and notes for downstreams

• Started publishing wheels made for the free-threaded build of CPython 3.13 -- by :user:lysnikolaou.

  Related issues and pull requests on GitHub:
  :issue:1015.

Miscellaneous internal changes

• Used stricter typing across the code base, resulting in improved typing accuracy across multidict classes.
  Funded by an NLnet grant.

  Related issues and pull requests on GitHub:
  :issue:1046.

---

v6.1.0

Compare Source

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

Bug fixes

• Covered the unreachable code path in
  multidict._multidict_base._abc_itemsview_register()
  with typing -- by :user:skinnyBat.

  Related issues and pull requests on GitHub:
  :issue:928.

Features

• Added support for Python 3.13 -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:1002.

Removals and backward incompatible breaking changes

• Removed Python 3.7 support -- by :user:bdraco.

  Related issues and pull requests on GitHub:
  :issue:997.

Contributor-facing changes

• Added tests to have full code coverage of the
  multidict._multidict_base._viewbaseset_richcmp() function
  -- by :user:skinnyBat.

  Related issues and pull requests on GitHub:
  :issue:928.

• The deprecated <https://hynek.me/til/set-output-deprecation-github-actions/>_
  ::set-output workflow command has been replaced
  by the $GITHUB_OUTPUT environment variable
  in the GitHub Actions CI/CD workflow definition.

  Related issues and pull requests on GitHub:
  :issue:940.

• codecov-action <https://github.com/codecov/codecov-action>_
  has been temporarily downgraded to v3
  in the GitHub Actions CI/CD workflow definitions
  in order to fix uploading coverage to Codecov_.
  See this issue <https://github.com/codecov/codecov-action/issues/1252>_
  for more details.

  .. _Codecov: https://codecov.io/gh/aio-libs/multidict?flags\[]=pytest

  Related issues and pull requests on GitHub:
  :issue:941.

• In the GitHub Actions CI/CD workflow definition,
  the Get pip cache dir step has been fixed for
  Windows runners by adding shell: bash.
  See actions/runner#2224 <https://github.com/actions/runner/issues/2224>_
  for more details.

  Related issues and pull requests on GitHub:
  :issue:942.

• Interpolation of the pip cache keys has been
  fixed by adding missing $ syntax
  in the GitHub Actions CI/CD workflow definition.

  Related issues and pull requests on GitHub:
  :issue:943.

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