Changelog

To be included in v6.2.0 (if present)

Released versions

6.2.0

(2025-03-17)

Bug fixes

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

    Related issues and pull requests on GitHub: #1045.

  • Fix a leak when the last accessed module in PyInit__multidict init is not released.

    Related issues and pull requests on GitHub: #1061.

Features

  • Implemented support for the free-threaded build of CPython 3.13 – by @lysnikolaou.

    Related issues and pull requests on GitHub: #1015.

Packaging updates and notes for downstreams

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

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


6.1.0 (2024-09-09)

Bug fixes

  • Covered the unreachable code path in multidict._multidict_base._abc_itemsview_register() with typing – by @skinnyBat.

    Related issues and pull requests on GitHub: #928.

Features

  • Added support for Python 3.13 – by @bdraco.

    Related issues and pull requests on GitHub: #1002.

Removals and backward incompatible breaking changes

  • Removed Python 3.7 support – by @bdraco.

    Related issues and pull requests on GitHub: #997.

Contributor-facing changes

  • Added tests to have full code coverage of the multidict._multidict_base._viewbaseset_richcmp() function – by @skinnyBat.

    Related issues and pull requests on GitHub: #928.

  • The deprecated ::set-output workflow command has been replaced by the $GITHUB_OUTPUT environment variable in the GitHub Actions CI/CD workflow definition.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: #940.

  • 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 for more details.

    Related issues and pull requests on GitHub: #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 for more details.

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


6.0.5 (2024-02-01)

Bug fixes

  • Upgraded the C-API macros that have been deprecated in Python 3.9 and later removed in 3.13 – by @iemelyanov.

    Related issues and pull requests on GitHub: #862, #864, #868, #898.

  • Reverted to using the public argument parsing API PyArg_ParseTupleAndKeywords() under Python 3.12 – by @charles-dyfis-net and @webknjaz.

    The effect is that this change prevents build failures with clang 16.9.6 and gcc-14 reported in #926. It also fixes a segmentation fault crash caused by passing keyword arguments to MultiDict.getall() discovered by @jonaslb and @hroncok while examining the problem.

    Related issues and pull requests on GitHub: #862, #909, #926, #929.

  • Fixed a SystemError: null argument to internal routine error on a MultiDict.items().isdisjoint() call when using C Extensions.

    Related issues and pull requests on GitHub: #927.

Improved documentation

  • On the Contributing docs page, a link to the Towncrier philosophy has been fixed.

    Related issues and pull requests on GitHub: #911.

Packaging updates and notes for downstreams

  • Stopped marking all files as installable package data – by @webknjaz.

    This change helps setuptools understand that C-headers are not to be installed under lib/python3.x/site-packages/.

    Related commits on GitHub: 31e1170.

  • Started publishing pure-python wheels to be installed as a fallback – by @webknjaz.

    Related commits on GitHub: 7ba0e72.

  • Switched from setuptools’ legacy backend (setuptools.build_meta:__legacy__) to the modern one (setuptools.build_meta) by actually specifying the the [build-system] build-backend option in pyproject.toml – by @Jackenmen.

    Related issues and pull requests on GitHub: #802.

  • Declared Python 3.12 supported officially in the distribution package metadata – by @hugovk.

    Related issues and pull requests on GitHub: #877.

Contributor-facing changes

  • The test framework has been refactored. In the previous state, the circular imports reported in #837 caused the C-extension tests to be skipped.

    Now, there is a set of the pytest fixtures that is set up in a parametrized manner allowing to have a consistent way of accessing mirrored multidict implementations across all the tests.

    This change also implemented a pair of CLI flags (--c-extensions / --no-c-extensions) that allow to explicitly request deselecting the tests running against the C-extension.

    – by @webknjaz.

    Related issues and pull requests on GitHub: #98, #837, #915.

  • Updated the test pins lockfile used in the cibuildwheel test stage – by @hoodmane.

    Related issues and pull requests on GitHub: #827.

  • Added an explicit void for arguments in C-function signatures which addresses the following compiler warning:

    warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
    

    – by @hoodmane

    Related issues and pull requests on GitHub: #828.

  • An experimental Python 3.13 job now runs in the CI – @webknjaz.

    Related issues and pull requests on GitHub: #920.

  • Added test coverage for the and, or, sub, and xor operators in the multidict/_multidict_base.py module. It also covers NotImplemented and “Iterable-but-not-Set” cases there.

    – by @a5r0n

    Related issues and pull requests on GitHub: #936.

  • The version of pytest is now capped below 8, when running MyPy against Python 3.7. This pytest release dropped support for said runtime.

    Related issues and pull requests on GitHub: #937.


6.0.4 (2022-12-24)

Bugfixes

  • Fixed a type annotations regression introduced in v6.0.2 under Python versions <3.10. It was caused by importing certain types only available in newer versions. (#798)

6.0.3 (2022-12-03)

Features

  • Declared the official support for Python 3.11 — by @mlegner. (#872)

6.0.2 (2022-01-24)

Bugfixes

  • Revert #644, restore type annotations to as-of 5.2.0 version. (#688)

6.0.1 (2022-01-23)

Bugfixes

  • Restored back MultiDict, CIMultiDict, MultiDictProxy, and CIMutiDictProxy generic type arguments; they are parameterized by value type, but the key type is fixed by container class.

    MultiDict[int] means MutableMultiMapping[str, int]. The key type of MultiDict is always str, while all str-like keys are accepted by API and converted to str internally.

    The same is true for CIMultiDict[int] which means MutableMultiMapping[istr, int]. str-like keys are accepted but converted to istr internally. (#682)

6.0.0 (2022-01-22)

Features

  • Use METH_FASTCALL where it makes sense.

    MultiDict.add() is 2.2 times faster now, CIMultiDict.add() is 1.5 times faster. The same boost is applied to get*(), setdefault(), and pop*() methods. (#681)

Bugfixes

  • Fixed type annotations for keys of multidict mapping classes. (#644)

  • Support Multidict[int] for pure-python version. __class_getitem__ is already provided by C Extension, making it work with the pure-extension too. (#678)

Deprecations and Removals

  • Dropped Python 3.6 support (#680)

Misc

5.2.0 (2021-10-03)

Features

    1. Added support Python 3.10

    2. Started shipping platform-specific wheels with the musl tag targeting typical Alpine Linux runtimes.

    3. Started shipping platform-specific arm64 wheels for Apple Silicon. (#629)

Bugfixes

  • Fixed pure-python implementation that used to raise “Dictionary changed during iteration” error when iterated view (.keys(), .values() or .items()) was created before the dictionary’s content change. (#620)

5.1.0 (2020-12-03)

Features

  • Supported GenericAliases (MultiDict[str]) for Python 3.9+ #553

Bugfixes

  • Synchronized the declared supported Python versions in setup.py with actually supported and tested ones. #552


5.0.1 (2020-11-14)

Bugfixes

  • Provided x86 Windows wheels #550


5.0.0 (2020-10-12)

Features

  • Provided wheels for aarch64, i686, ppc64le, s390x architectures on Linux as well as x86_64. #500

  • Provided wheels for Python 3.9. #534

Removal

  • Dropped Python 3.5 support; Python 3.6 is the minimal supported Python version.

Misc