Sourced from multidict's releases.

6.4.4

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: #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: #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: #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: #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: #1153.

---

Sourced from multidict's changelog.

6.4.4

(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.

... (truncated)

• e77793a Release 6.4.4 (#1164)
• b5a24b7 Fix segfault creating view objects (#1163)
• fea968f Fix segfault when a single arg is passed to setdefault (#1160)
• 7770ff2 Bump dependabot/fetch-metadata from 2.3.0 to 2.4.0 (#1162)
• af42043 Bump pypa/cibuildwheel from 2.23.2 to 2.23.3 (#1158)
• df93794 Fix wrong types in tests (#1156)
• 72f3fce Tune multidict benchmark (#1155)
• 99e3f3b Drop _Impl helper class, move all logic to MultiDict itself (#1153)
• d476a03 Views don't rely in _Impl anymore (#1152)
• 1d72435 MultiDictProxy doesn't rely on '_impl' anymore (#1150)
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