Pin pydantic to latest version 2.13.1 by pyup-bot · Pull Request #791 · eracle/OpenOutreach

pyup-bot · 2026-04-15T15:22:45Z

This PR pins pydantic to the latest release 2.13.1.

Changelog

2.13.0

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.13.0)

The highlights of the v2.13 release are available in the [blog post](https://pydantic.dev/articles/pydantic-v2-13-release).
Several minor changes (considered non-breaking changes according to our [versioning policy](https://pydantic.dev/docs/validation/2.13/get-started/version-policy/#pydantic-v2))
are also included in this release. Make sure to look into them before upgrading.

This release contains the updated `pydantic.v1` namespace, matching version 1.10.26 which includes support for Python 3.14.

What&#x27;s Changed

See the beta releases for all changes sinces 2.12.

New Features

* Allow default factories of private attributes to take validated model data by Viicos in [13013](https://github.com/pydantic/pydantic/pull/13013)

Changes

* Warn when serializing fixed length tuples with too few items by arvindsaripalli in [13016](https://github.com/pydantic/pydantic/pull/13016)

Fixes

* Change type of `Any` when synthesizing `_build_sources` for  `BaseSettings.__init__()` signature in the mypy plugin by Viicos in [13049](https://github.com/pydantic/pydantic/pull/13049)
* Fix model equality when using runtime `extra` configuration by Viicos in [13062](https://github.com/pydantic/pydantic/pull/13062)

Packaging

* Add zizmor for GitHub Actions workflow linting by Viicos in [13039](https://github.com/pydantic/pydantic/pull/13039)
* Update jiter to v0.14.0 to fix a segmentation fault on musl Linux by Viicos in [13064](https://github.com/pydantic/pydantic/pull/13064)

New Contributors

* arvindsaripalli made their first contribution in [13016](https://github.com/pydantic/pydantic/pull/13016)

2.13.0b3

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.13.0b3)

What&#x27;s Changed

New Features

* Add `ascii_only` option to `StringConstraints` by ai-man-codes in [12907](https://github.com/pydantic/pydantic/pull/12907)
* Support `exclude_if` in computed fields by andresliszt in [12748](https://github.com/pydantic/pydantic/pull/12748)
* Push down constraints in unions involving `MISSING` sentinel by Viicos in [12908](https://github.com/pydantic/pydantic/pull/12908)

Changes

* Track extra fields set after init in `model_fields_set` by navalprakhar in [12817](https://github.com/pydantic/pydantic/pull/12817)
* Do not include annotations that are not part of named tuple fields by galuszkak in [12951](https://github.com/pydantic/pydantic/pull/12951)
* No longer fall back to trying all union members when the variant selected by discriminator fails to serialize by navalprakhar in [12825](https://github.com/pydantic/pydantic/pull/12825)

Fixes

* Support discriminator metadata outside union type alias by Viicos in [12785](https://github.com/pydantic/pydantic/pull/12785)
* Respect `extras_schema` when only `extra_fields_behavior` is set on the config in JSON Schema generation for typed dictionaries by Viicos in [12810](https://github.com/pydantic/pydantic/pull/12810)
* Ensure `__pydantic_private__` is set in `model_construct()` with user-defined `model_post_init()` by nightcityblade in [12816](https://github.com/pydantic/pydantic/pull/12816)
* Handle all schema generation errors in `InstanceOf` by Viicos in [12705](https://github.com/pydantic/pydantic/pull/12705)
* Allow dynamic models created with `create_model()` to be used as annotations in the Mypy plugin by Br1an67 in [12879](https://github.com/pydantic/pydantic/pull/12879)
* Check for `PlaceholderNode` in Mypy plugin by Viicos in [12929](https://github.com/pydantic/pydantic/pull/12929)
* Try other branches in smart union in case of omit errors by mikeedjones in [12758](https://github.com/pydantic/pydantic/pull/12758)
* Patch unset attributes with `MISSING` during model serialization with `exclude_unset` by davidhewitt in [12905](https://github.com/pydantic/pydantic/pull/12905)
* Ensure custom `__init__()` is called when using `model_validate_strings()` by siewcapital in [12897](https://github.com/pydantic/pydantic/pull/12897)

Packaging

* Add riscv64 build target for manylinux by boosterl in [12723](https://github.com/pydantic/pydantic/pull/12723)

New Contributors

* kelsonbrito50 made their first contribution in [12860](https://github.com/pydantic/pydantic/pull/12860)
* boosterl made their first contribution in [12723](https://github.com/pydantic/pydantic/pull/12723)
* adityagiri3600 made their first contribution in [12868](https://github.com/pydantic/pydantic/pull/12868)
* navalprakhar made their first contribution in [12817](https://github.com/pydantic/pydantic/pull/12817)
* Br1an67 made their first contribution in [12879](https://github.com/pydantic/pydantic/pull/12879)
* rmorshea made their first contribution in [12910](https://github.com/pydantic/pydantic/pull/12910)
* N3XT3R1337 made their first contribution in [12922](https://github.com/pydantic/pydantic/pull/12922)
* ai-man-codes made their first contribution in [12907](https://github.com/pydantic/pydantic/pull/12907)
* Yume05-dev made their first contribution in [12953](https://github.com/pydantic/pydantic/pull/12953)
* galuszkak made their first contribution in [12951](https://github.com/pydantic/pydantic/pull/12951)
* siewcapital made their first contribution in [12897](https://github.com/pydantic/pydantic/pull/12897)

2.13.0b2

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.13.0b2)

What&#x27;s Changed

Fixes

* Fix backported V1 namespace by Viicos in [12855](https://github.com/pydantic/pydantic/pull/12855)
* Allow any type form to be used in `validate_as()` by bledden in [12846](https://github.com/pydantic/pydantic/pull/12846)
* Fix walrus operator precedence in `UrlConstraints.__get_pydantic_core_schema__()` by bysiber in [12826](https://github.com/pydantic/pydantic/pull/12826)

New Contributors

* bledden made their first contribution in [12846](https://github.com/pydantic/pydantic/pull/12846)
* bysiber made their first contribution in [12827](https://github.com/pydantic/pydantic/pull/12827)

2.13.0b1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.13.0b1)

This is the first beta release of the 2.13 version, mainly providing bug fixes and performance improvements
for validation and serialization.

Notable changes include:

* Add a new `polymorphic_serialization` option, solving issues with `serialize_as_any` introduced in 2.12.
* Latest V1.10.26 release under the `pydantic.v1` namespace. This version includes support for Python 3.14.
* The [`pydantic-core`](https://github.com/pydantic/pydantic-core/) repository was merged inside the main `pydantic` one.

What&#x27;s Changed

New Features

* Add `polymorphic_serialization` option by davidhewitt in [12518](https://github.com/pydantic/pydantic/pull/12518)
* Support Root models with `Literal` root types as discriminator field types by YassinNouh21 in [12680](https://github.com/pydantic/pydantic/pull/12680)

Changes

* Migrate `pydantic-core` CI by Viicos in [12752](https://github.com/pydantic/pydantic/pull/12752)
* Import `pydantic-core` into pydantic by davidhewitt in [12481](https://github.com/pydantic/pydantic/pull/12481)
* Backport V1 changes up to v1.10.26 by Viicos in [12663](https://github.com/pydantic/pydantic/pull/12663)
* Use the `complex()` constructor unconditionally when validating `complex` Python data by tanmaymunjal in [12498](https://github.com/pydantic/pydantic/pull/12498)
* Add support for three-tuple input for `Decimal` by tanmaymunjal in [12500](https://github.com/pydantic/pydantic/pull/12500)
* Align `field_serializer` logic with `field_validator` by Viicos in [12577](https://github.com/pydantic/pydantic/pull/12577)
* Make `PydanticUserError` a `RuntimeError` instead of a `TypeError` by poliakovva in [12579](https://github.com/pydantic/pydantic/pull/12579)
* Remove redundant serialization attempts in nested unions by davidhewitt in [12604](https://github.com/pydantic/pydantic/pull/12604)
* Copy `root` value when making root model shallow copies by YassinNouh21 in [12679](https://github.com/pydantic/pydantic/pull/12679)
* Ensure deterministic JSON schema defaults by sorting sets by drshvik in [12760](https://github.com/pydantic/pydantic/pull/12760)

Performance

* Refactor `DecoratorInfos.build()` implementation by Viicos in [12536](https://github.com/pydantic/pydantic/pull/12536)
* Cache compiled regex in `pydantic-core` by Viicos in [12549](https://github.com/pydantic/pydantic/pull/12549)
* Optimize creation of `Literal` validators by davidhewitt in [12569](https://github.com/pydantic/pydantic/pull/12569)
* Optimize implementation of `LookupKey` by davidhewitt in [12571](https://github.com/pydantic/pydantic/pull/12571)
* Use python strings for field names by davidhewitt in [12631](https://github.com/pydantic/pydantic/pull/12631)
* Optimize datetime formatting code by davidhewitt in [12626](https://github.com/pydantic/pydantic/pull/12626)
* Validate JSON model data by iteration by davidhewitt in [12550](https://github.com/pydantic/pydantic/pull/12550)
* Optimize annotations evaluation of Pydantic models by Viicos in [12681](https://github.com/pydantic/pydantic/pull/12681)
* Optimize `FieldInfo._copy()` by Viicos in [12727](https://github.com/pydantic/pydantic/pull/12727)

Fixes

* Fix `FieldInfo` rebuilding when parameterizing generic models with an `Annotated` type by Viicos in [12463](https://github.com/pydantic/pydantic/pull/12463)
* Fix nested model schema deduplication in JSON schema generation by marwan-alloreview in [12494](https://github.com/pydantic/pydantic/pull/12494)
* Fix `InitVar` being ignored when using with the `pydantic.Field()` function by Viicos in [12495](https://github.com/pydantic/pydantic/pull/12495)
* Fix support for enums with `NamedTuple` as values by Viicos in [12506](https://github.com/pydantic/pydantic/pull/12506)
* Do not delete mock validator/serializer in `rebuild_dataclass()` by Viicos in [12513](https://github.com/pydantic/pydantic/pull/12513)
* Require test suite to pass with free threading, switch back to global generic types cache by davidhewitt in [12537](https://github.com/pydantic/pydantic/pull/12537)
* Refactor `__pydantic_extra__` annotation handling by Viicos in [12563](https://github.com/pydantic/pydantic/pull/12563)
* Do not add claim of UUID &quot;safety&quot; provision by davidhewitt in [12567](https://github.com/pydantic/pydantic/pull/12567)
* Use Python hash to perform lookup in tagged union serializer by davidhewitt in [12594](https://github.com/pydantic/pydantic/pull/12594)
* Do not emit serialization warning `MISSING` sentinel is present in a nested model by Viicos in [12635](https://github.com/pydantic/pydantic/pull/12635)
* Do not eagerly evaluate annotations in signature logic by Viicos in [12660](https://github.com/pydantic/pydantic/pull/12660)
* Fix serialization of typed dict unions when `exclude_none` is set by davidhewitt in [12677](https://github.com/pydantic/pydantic/pull/12677)
* Do not reuse prebuilt serializers/validators on rebuilds by lmmx in [12689](https://github.com/pydantic/pydantic/pull/12689)
* Fix type annotation of `field_definitions` in `create_model()` by lehmann-hqs in [12734](https://github.com/pydantic/pydantic/pull/12734)
* Fix incorrect dataclass constructor signature when overriding class `kw_only` with `Field()` by jfadia in [12741](https://github.com/pydantic/pydantic/pull/12741)
* Use `typing.Union` when replacing types under Python 3.14 by Viicos in [12733](https://github.com/pydantic/pydantic/pull/12733)
* Improve ImportString error when internal imports fail by tsembp in [12740](https://github.com/pydantic/pydantic/pull/12740)
* Fix serializing complex numbers with negative zero imaginary part by lhnwrk in [12770](https://github.com/pydantic/pydantic/pull/12770)
* Preserve custom docstrings on stdlib dataclasses in JSON schema by nightcityblade in [12815](https://github.com/pydantic/pydantic/pull/12815)

Packaging

* Bump Rust url dependency from 2.5.4 to 2.5.7 in `pydantic-core` by dependabot[bot] in [12508](https://github.com/pydantic/pydantic/pull/12508)
* Bump Rust minimum version to 1.88, use edition 2024 by davidhewitt and Viicos in [12551](https://github.com/pydantic/pydantic/pull/12551) and [#12752](https://github.com/pydantic/pydantic/pull/12752)
* Bump PyO3 to 0.28, jiter to 0.13 by davidhewitt in [12767](https://github.com/pydantic/pydantic/pull/12767)

New Contributors

* marwan-alloreview made their first contribution in [12494](https://github.com/pydantic/pydantic/pull/12494)
* tanmaymunjal made their first contribution in [12498](https://github.com/pydantic/pydantic/pull/12498)
* poliakovva made their first contribution in [12579](https://github.com/pydantic/pydantic/pull/12579)
* lehmann-hqs made their first contribution in [12734](https://github.com/pydantic/pydantic/pull/12734)
* jfadia made their first contribution in [12741](https://github.com/pydantic/pydantic/pull/12741)
* tsembp made their first contribution in [12740](https://github.com/pydantic/pydantic/pull/12740)
* drshvik made their first contribution in [12760](https://github.com/pydantic/pydantic/pull/12760)
* lhnwrk made their first contribution in [12770](https://github.com/pydantic/pydantic/pull/12770)
* nightcityblade made their first contribution in [12815](https://github.com/pydantic/pydantic/pull/12811)

2.12.5

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.5)

This is the fifth 2.12 patch release, addressing an issue with the `MISSING` sentinel and providing several documentation improvements.

The next 2.13 minor release will be published in a couple weeks, and will include a new *polymorphic serialization* feature addressing
the remaining unexpected changes to the *serialize as any* behavior.

* Fix pickle error when using `model_construct()` on a model with `MISSING` as a default value by ornariece in [12522](https://github.com/pydantic/pydantic/pull/12522).
* Several updates to the documentation by Viicos.

2.12.4

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.4)

This is the fourth 2.12 patch release, fixing more regressions, and reverting a change in the `build()` method
of the [`AnyUrl` and Dsn types](https://docs.pydantic.dev/latest/api/networks/).

This patch release also fixes an issue with the serialization of IP address types, when `serialize_as_any` is used. The next patch release
will try to address the remaining issues with *serialize as any* behavior by introducing a new *polymorphic serialization* feature, that
should be used in most cases in place of *serialize as any*.

* Fix issue with forward references in parent `TypedDict` classes by Viicos in [12427](https://github.com/pydantic/pydantic/pull/12427).

 This issue is only relevant on Python 3.14 and greater.

* Exclude fields with `exclude_if` from JSON Schema required fields by Viicos in [12430](https://github.com/pydantic/pydantic/pull/12430)
* Revert URL percent-encoding of credentials in the `build()` method
of the [`AnyUrl` and Dsn types](https://docs.pydantic.dev/latest/api/networks/) by davidhewitt in
[pydantic-core1833](https://github.com/pydantic/pydantic-core/pull/1833).

 This was initially considered as a bugfix, but caused regressions and as such was fully reverted. The next release will include
 an opt-in option to percent-encode components of the URL.

* Add type inference for IP address types by davidhewitt in [pydantic-core1868](https://github.com/pydantic/pydantic-core/pull/1868).

 The 2.12 changes to the `serialize_as_any` behavior made it so that IP address types could not properly serialize to JSON.

* Avoid getting default values from defaultdict by davidhewitt in [pydantic-core1853](https://github.com/pydantic/pydantic-core/pull/1853).

 This fixes a subtle regression in the validation behavior of the [`collections.defaultdict`](https://docs.python.org/3/library/collections.html#collections.defaultdict)
 type.

* Fix issue with field serializers on nested typed dictionaries by davidhewitt in [pydantic-core1879](https://github.com/pydantic/pydantic-core/pull/1879).
* Add more `pydantic-core` builds for the three-threaded version of Python 3.14 by davidhewitt in [pydantic-core1864](https://github.com/pydantic/pydantic-core/pull/1864).

2.12.3

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.3)

What&#x27;s Changed

This is the third 2.12 patch release, fixing issues related to the `FieldInfo` class, and reverting a change to the supported
[*after* model validator](https://docs.pydantic.dev/latest/concepts/validators/#model-validators) function signatures.

* Raise a warning when an invalid after model validator function signature is raised by Viicos in [12414](https://github.com/pydantic/pydantic/pull/12414).
Starting in 2.12.0, using class methods for *after* model validators raised an error, but the error wasn&#x27;t raised concistently. We decided
to emit a deprecation warning instead.
* Add [`FieldInfo.asdict()`](https://docs.pydantic.dev/latest/api/fields/#pydantic.fields.FieldInfo.asdict) method, improve documentation around `FieldInfo` by Viicos in [12411](https://github.com/pydantic/pydantic/pull/12411).
This also add back support for mutations on `FieldInfo` classes, that are reused as `Annotated` metadata. **However**, note that this is still
*not* a supported pattern. Instead, please refer to the [added example](https://docs.pydantic.dev/latest/examples/dynamic_models/) in the documentation.

The [blog post](https://pydantic.dev/articles/pydantic-v2-12-release#changes) section on changes was also updated to document the changes related to `serialize_as_any`.

2.12.2

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.2)

What&#x27;s Changed

Fixes

* Release a new `pydantic-core` version, as a corrupted CPython 3.10 `manylinux2014_aarch64` wheel got uploaded ([pydantic-core1843](https://github.com/pydantic/pydantic-core/pull/1843)).
* Fix issue with recursive generic models with a parent model class by Viicos in [12398](https://github.com/pydantic/pydantic/pull/12398)

2.12.1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.1)

What&#x27;s Changed

This is the first 2.12 patch release, addressing most (but not all yet) regressions from the initial 2.12.0 release.

Fixes

* Do not evaluate annotations when inspecting validators and serializers by Viicos in [12355](https://github.com/pydantic/pydantic/pull/12355)
* Make sure `None` is converted as `NoneType` in Python 3.14 by Viicos in [12370](https://github.com/pydantic/pydantic/pull/12370)
* Backport V1 runtime warning when using Python 3.14 by Viicos in [12367](https://github.com/pydantic/pydantic/pull/12367)
* Fix error message for invalid validator signatures by Viicos in [12366](https://github.com/pydantic/pydantic/pull/12366)
* Populate field name in `ValidationInfo` for validation of default value by Viicos in [pydantic-core1826](https://github.com/pydantic/pydantic-core/pull/1826)
* Encode credentials in `MultiHostUrl` builder by willswire in [pydantic-core1829](https://github.com/pydantic/pydantic-core/pull/1829)
* Respect field serializers when using `serialize_as_any` serialization flag by davidhewitt in [pydantic-core1829](https://github.com/pydantic/pydantic-core/pull/1829)
* Fix various `RootModel` serialization issues by davidhewitt in [pydantic-core1836](https://github.com/pydantic/pydantic-core/pull/1836)

New Contributors

* willswire made their first contribution in [pydantic-core1829](https://github.com/pydantic/pydantic-core/pull/1829)

2.12.0

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.0)

This is the final 2.12 release. It features the work of 20 external contributors and provides useful new features, along with initial Python 3.14 support.
Several minor changes (considered non-breaking changes according to our [versioning policy](https://docs.pydantic.dev/2.12/version-policy/#pydantic-v2))
are also included in this release. Make sure to look into them before upgrading.

**Note that Pydantic V1 is not compatible with Python 3.14 and greater**.

What&#x27;s Changed

See the beta releases for all changes sinces 2.11.

New Features

* Add `extra` parameter to the validate functions by anvilpete in [12233](https://github.com/pydantic/pydantic/pull/12233)
* Add `exclude_computed_fields` serialization option by Viicos in [12334](https://github.com/pydantic/pydantic/pull/12334)
* Add `preverse_empty_path` URL options by Viicos in [12336](https://github.com/pydantic/pydantic/pull/12336)
* Add `union_format` parameter to JSON Schema generation by Viicos in [12147](https://github.com/pydantic/pydantic/pull/12147)
* Add `__qualname__` parameter for `create_model` by Atry in [12001](https://github.com/pydantic/pydantic/pull/12001)

Fixes

* Do not try to infer name from lambda definitions in pipelines API by Viicos in [12289](https://github.com/pydantic/pydantic/pull/12289)
* Use proper namespace for functions in `TypeAdapter` by Viicos in [12324](https://github.com/pydantic/pydantic/pull/12324)
* Use `Any` for context type annotation in `TypeAdapter` by inducer in [12279](https://github.com/pydantic/pydantic/pull/12279)
* Expose `FieldInfo` in `pydantic.fields.__all__` by Viicos in [12339](https://github.com/pydantic/pydantic/pull/12339)
* Respect `validation_alias` in `validate_call` by Viicos in [12340](https://github.com/pydantic/pydantic/pull/12340)
* Use `Any` as context annotation in plugin API by Viicos in [12341](https://github.com/pydantic/pydantic/pull/12341)
* Use proper `stacklevel` in warnings when possible by Viicos in [12342](https://github.com/pydantic/pydantic/pull/12342)

Packaging

* Update V1 copy to v1.10.24 by Viicos in [12338](https://github.com/pydantic/pydantic/pull/12338)

New Contributors

* anvilpete made their first contribution in [12233](https://github.com/pydantic/pydantic/pull/12233)
* JonathanWindell made their first contribution in [12327](https://github.com/pydantic/pydantic/pull/12327)
* inducer made their first contribution in [12279](https://github.com/pydantic/pydantic/pull/12279)
* Atry made their first contribution in [12001](https://github.com/pydantic/pydantic/pull/12001)

2.12.0b1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.0b1)

This is the first beta release of the upcoming 2.12 release.

What&#x27;s Changed

New Features

* Add support for `exclude_if` at the field level by andresliszt in [12141](https://github.com/pydantic/pydantic/pull/12141)
* Add `ValidateAs` annotation helper by Viicos in [11942](https://github.com/pydantic/pydantic/pull/11942)
* Add configuration options for validation and JSON serialization of temporal types by ollz272 in [12068](https://github.com/pydantic/pydantic/pull/12068)
* Add support for PEP 728 by Viicos in [12179](https://github.com/pydantic/pydantic/pull/12179)
* Add field name in serialization error by NicolasPllr1 in [pydantic-core1799](https://github.com/pydantic/pydantic-core/pull/1799)
* Add option to preserve empty URL paths by davidhewitt in [pydantic-core1789](https://github.com/pydantic/pydantic-core/pull/1789)

Changes

* Raise error if an incompatible `pydantic-core` version is installed by Viicos in [12196](https://github.com/pydantic/pydantic/pull/12196)
* Remove runtime warning for experimental features by Viicos in [12265](https://github.com/pydantic/pydantic/pull/12265)
* Warn if registering virtual subclasses on Pydantic models by Viicos in [11669](https://github.com/pydantic/pydantic/pull/11669)

Fixes

* Fix `__getattr__()` behavior on Pydantic models when a property raised an `AttributeError` and extra values are present by raspuchin in [12106](https://github.com/pydantic/pydantic/pull/12106)
* Add test to prevent regression with Pydantic models used as annotated metadata by Viicos in [12133](https://github.com/pydantic/pydantic/pull/12133)
* Allow to use property setters on Pydantic dataclasses with `validate_assignment` set by Viicos in [12173](https://github.com/pydantic/pydantic/pull/12173)
* Fix mypy v2 plugin for upcoming mypy release by cdce8p in [12209](https://github.com/pydantic/pydantic/pull/12209)
* Respect custom title in functions JSON Schema by Viicos in [11892](https://github.com/pydantic/pydantic/pull/11892)
* Fix `ImportString` JSON serialization for objects with a `name` attribute by chr1sj0nes in [12219](https://github.com/pydantic/pydantic/pull/12219)
* Do not error on fields overridden by methods in the mypy plugin by Viicos in [12290](https://github.com/pydantic/pydantic/pull/12290)

Packaging

* Bump `pydantic-core` to v2.40.1 by Viicos in [12314](https://github.com/pydantic/pydantic/pull/12314)

New Contributors

* raspuchin made their first contribution in [12106](https://github.com/pydantic/pydantic/pull/12106)
* chr1sj0nes made their first contribution in [12219](https://github.com/pydantic/pydantic/pull/12219)

2.12.0a1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.12.0a1)

This is the first alpha release of the upcoming 2.12 release, which adds initial support for Python 3.14.

What&#x27;s Changed

New Features

* Add `__pydantic_on_complete__()` hook that is called once model is fully ready to be used by DouweM in [11762](https://github.com/pydantic/pydantic/pull/11762)
* Add initial support for Python 3.14 by Viicos in [11991](https://github.com/pydantic/pydantic/pull/11991)
* Add regex patterns to JSON schema for `Decimal` type by Dima-Bulavenko in [11987](https://github.com/pydantic/pydantic/pull/11987)
* Add support for `doc` attribute on dataclass fields by Viicos in [12077](https://github.com/pydantic/pydantic/pull/12077)
* Add experimental `MISSING` sentinel by Viicos in [11883](https://github.com/pydantic/pydantic/pull/11883)

Changes

* Allow config and bases to be specified together in `create_model()` by Viicos in [11714](https://github.com/pydantic/pydantic/pull/11714)
* Move some field logic out of the `GenerateSchema` class by Viicos in [11733](https://github.com/pydantic/pydantic/pull/11733)
* Always make use of `inspect.getsourcelines()` for docstring extraction on Python 3.13 and greater by Viicos in [11829](https://github.com/pydantic/pydantic/pull/11829)
* Only support the latest Mypy version by Viicos in [11832](https://github.com/pydantic/pydantic/pull/11832)
* Do not implicitly convert after model validators to class methods by Viicos in [11957](https://github.com/pydantic/pydantic/pull/11957)
* Refactor `FieldInfo` creation implementation by Viicos in [11898](https://github.com/pydantic/pydantic/pull/11898)
* Make `Secret` covariant by bluenote10 in [12008](https://github.com/pydantic/pydantic/pull/12008)
* Emit warning when field-specific metadata is used in invalid contexts by Viicos in [12028](https://github.com/pydantic/pydantic/pull/12028)

Fixes

* Properly fetch plain serializer function when serializing default value in JSON Schema by Viicos in [11721](https://github.com/pydantic/pydantic/pull/11721)
* Remove generics cache workaround by Viicos in [11755](https://github.com/pydantic/pydantic/pull/11755)
* Remove coercion of decimal constraints by Viicos in [11772](https://github.com/pydantic/pydantic/pull/11772)
* Fix crash when expanding root type in the mypy plugin by Viicos in [11735](https://github.com/pydantic/pydantic/pull/11735)
* Only mark model as complete once all fields are complete by DouweM in [11759](https://github.com/pydantic/pydantic/pull/11759)
* Do not provide `field_name` in validator core schemas by DouweM in [11761](https://github.com/pydantic/pydantic/pull/11761)
* Fix issue with recursive generic models by Viicos in [11775](https://github.com/pydantic/pydantic/pull/11775)
* Fix qualified name comparison of private attributes during namespace inspection by karta9821 in [11803](https://github.com/pydantic/pydantic/pull/11803)
* Make sure Pydantic dataclasses with slots and `validate_assignment` can be unpickled by Viicos in [11769](https://github.com/pydantic/pydantic/pull/11769)
* Traverse `function-before` schemas during schema gathering by Viicos in [11801](https://github.com/pydantic/pydantic/pull/11801)
* Fix check for stdlib dataclasses by Viicos in [11822](https://github.com/pydantic/pydantic/pull/11822)
* Check if `FieldInfo` is complete after applying type variable map by Viicos in [11855](https://github.com/pydantic/pydantic/pull/11855)
* Do not delete mock validator/serializer in `model_rebuild()` by Viicos in [11890](https://github.com/pydantic/pydantic/pull/11890)
* Rebuild dataclass fields before schema generation by Viicos in [11949](https://github.com/pydantic/pydantic/pull/11949)
* Always store the original field assignment on `FieldInfo` by Viicos in [11946](https://github.com/pydantic/pydantic/pull/11946)
* Do not use deprecated methods as default field values by Viicos in [11914](https://github.com/pydantic/pydantic/pull/11914)
* Allow callable discriminator to be applied on PEP 695 type aliases by Viicos in [11941](https://github.com/pydantic/pydantic/pull/11941)
* Suppress core schema generation warning when using `SkipValidation` by ygsh0816 in [12002](https://github.com/pydantic/pydantic/pull/12002)
* Do not emit typechecking error for invalid `Field()` default with `validate_default` set to `True` by Viicos in [11988](https://github.com/pydantic/pydantic/pull/11988)
* Refactor logic to support Pydantic&#x27;s `Field()` function in dataclasses by Viicos in [12051](https://github.com/pydantic/pydantic/pull/12051)

Packaging

* Update project metadata to use PEP 639 by Viicos in [11694](https://github.com/pydantic/pydantic/pull/11694)
* Bump `mkdocs-llmstxt` to v0.2.0 by Viicos in [11725](https://github.com/pydantic/pydantic/pull/11725)
* Bump `pydantic-core` to v2.35.1 by Viicos in [11963](https://github.com/pydantic/pydantic/pull/11963)
* Bump dawidd6/action-download-artifact from 10 to 11 by dependabot[bot] in [12033](https://github.com/pydantic/pydantic/pull/12033)
* Bump astral-sh/setup-uv from 5 to 6 by dependabot[bot] in [11826](https://github.com/pydantic/pydantic/pull/11826)
* Update mypy to 1.17.0 by Viicos in [12076](https://github.com/pydantic/pydantic/pull/12076)

New Contributors

* parth-paradkar made their first contribution in [11695](https://github.com/pydantic/pydantic/pull/11695)
* dqkqd made their first contribution in [11739](https://github.com/pydantic/pydantic/pull/11739)
* fhightower made their first contribution in [11722](https://github.com/pydantic/pydantic/pull/11722)
* gbaian10 made their first contribution in [11766](https://github.com/pydantic/pydantic/pull/11766)
* DouweM made their first contribution in [11759](https://github.com/pydantic/pydantic/pull/11759)
* bowenliang123 made their first contribution in [11719](https://github.com/pydantic/pydantic/pull/11719)
* rawwar made their first contribution in [11799](https://github.com/pydantic/pydantic/pull/11799)
* karta9821 made their first contribution in [11803](https://github.com/pydantic/pydantic/pull/11803)
* jinnovation made their first contribution in [11834](https://github.com/pydantic/pydantic/pull/11834)
* zmievsa made their first contribution in [11861](https://github.com/pydantic/pydantic/pull/11861)
* Otto-AA made their first contribution in [11860](https://github.com/pydantic/pydantic/pull/11860)
* ygsh0816 made their first contribution in [12002](https://github.com/pydantic/pydantic/pull/12002)
* lukland made their first contribution in [12015](https://github.com/pydantic/pydantic/pull/12015)
* Dima-Bulavenko made their first contribution in [11987](https://github.com/pydantic/pydantic/pull/11987)
* GSemikozov made their first contribution in [12050](https://github.com/pydantic/pydantic/pull/12050)
* hannah-heywa made their first contribution in [12082](https://github.com/pydantic/pydantic/pull/12082)

2.11.10

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.10)

What&#x27;s Changed

Fixes

* Backport v1.10.24 changes by Viicos

2.11.9

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.9)

What&#x27;s Changed

Fixes

* Backport v1.10.23 changes by Viicos

2.11.8

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.8)

What&#x27;s Changed

Fixes

* Fix mypy plugin for mypy 1.18 by cdce8p in [12209](https://github.com/pydantic/pydantic/pull/12209)

2.11.7

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.7)

What&#x27;s Changed

Fixes

* Copy `FieldInfo` instance if necessary during `FieldInfo` build by Viicos in [11898](https://github.com/pydantic/pydantic/pull/11898)

2.11.6

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.6)

What&#x27;s Changed

Fixes

* Rebuild dataclass fields before schema generation by Viicos in [11949](https://github.com/pydantic/pydantic/pull/11949)
* Always store the original field assignment on `FieldInfo` by Viicos in [11946](https://github.com/pydantic/pydantic/pull/11946)

2.11.5

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.5)

What&#x27;s Changed

Fixes

* Check if `FieldInfo` is complete after applying type variable map by Viicos in [11855](https://github.com/pydantic/pydantic/pull/11855)
* Do not delete mock validator/serializer in `model_rebuild()` by Viicos in [11890](https://github.com/pydantic/pydantic/pull/11890)
* Do not duplicate metadata on model rebuild by Viicos in [11902](https://github.com/pydantic/pydantic/pull/11902)

2.11.4

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.4)

What&#x27;s Changed

Changes

* Allow config and bases to be specified together in `create_model()` by Viicos in [11714](https://github.com/pydantic/pydantic/pull/11714).
This change was backported as it was previously possible (although not meant to be supported)
to provide `model_config` as a field, which would make it possible to provide both configuration
and bases.

Fixes

* Remove generics cache workaround by Viicos in [11755](https://github.com/pydantic/pydantic/pull/11755)
* Remove coercion of decimal constraints by Viicos in [11772](https://github.com/pydantic/pydantic/pull/11772)
* Fix crash when expanding root type in the mypy plugin by Viicos in [11735](https://github.com/pydantic/pydantic/pull/11735)
* Fix issue with recursive generic models by Viicos in [11775](https://github.com/pydantic/pydantic/pull/11775)
* Traverse `function-before` schemas during schema gathering by Viicos in [11801](https://github.com/pydantic/pydantic/pull/11801)

Packaging

* Bump `mkdocs-llmstxt` to v0.2.0 by Viicos in [11725](https://github.com/pydantic/pydantic/pull/11725)

2.11.3

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.3)

What&#x27;s Changed

Fixes

* Preserve field description when rebuilding model fields by Viicos in [11698](https://github.com/pydantic/pydantic/pull/11698)

Packaging

* Update V1 copy to v1.10.21 by Viicos in [11706](https://github.com/pydantic/pydantic/pull/11706)

2.11.2

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.2)

What&#x27;s Changed

Fixes

* Bump `pydantic-core` to v2.33.1 by Viicos in [11678](https://github.com/pydantic/pydantic/pull/11678)
* Make sure `__pydantic_private__` exists before setting private attributes by Viicos in [11666](https://github.com/pydantic/pydantic/pull/11666)
* Do not override `FieldInfo._complete` when using field from parent class by Viicos in [11668](https://github.com/pydantic/pydantic/pull/11668)
* Provide the available definitions when applying discriminated unions by Viicos in [11670](https://github.com/pydantic/pydantic/pull/11670)
* Do not expand root type in the mypy plugin for variables by Viicos in [11676](https://github.com/pydantic/pydantic/pull/11676)
* Mention the attribute name in model fields deprecation message by Viicos in [11674](https://github.com/pydantic/pydantic/pull/11674)
* Properly validate parameterized mappings by Viicos in [11658](https://github.com/pydantic/pydantic/pull/11658)

2.11.1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.1)

What&#x27;s Changed

Fixes

* Do not override `&#x27;definitions-ref&#x27;` schemas containing serialization schemas or metadata by Viicos in [11644](https://github.com/pydantic/pydantic/pull/11644)

2.11.0

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.0)

What&#x27;s Changed

Pydantic v2.11 is a version strongly focused on build time performance of Pydantic models (and core schema generation in general).
See the [blog post](https://pydantic.dev/articles/pydantic-v2-11-release) for more details.

New Features

* Add `encoded_string()` method to the URL types by YassinNouh21 in [11580](https://github.com/pydantic/pydantic/pull/11580)
* Add support for `defer_build` with `validate_call` decorator by Viicos in [11584](https://github.com/pydantic/pydantic/pull/11584)
* Allow `with_config` decorator to be used with keyword arguments by Viicos in [11608](https://github.com/pydantic/pydantic/pull/11608)
* Simplify customization of default value inclusion in JSON Schema generation by Viicos in [11634](https://github.com/pydantic/pydantic/pull/11634)
* Add `generate_arguments_schema()` function by Viicos in [11572](https://github.com/pydantic/pydantic/pull/11572)

Fixes

* Allow generic typed dictionaries to be used for unpacked variadic keyword parameters by Viicos in [11571](https://github.com/pydantic/pydantic/pull/11571)
* Fix runtime error when computing model string representation involving cached properties and self-referenced models by Viicos in [11579](https://github.com/pydantic/pydantic/pull/11579)
* Preserve other steps when using the ellipsis in the pipeline API by Viicos in [11626](https://github.com/pydantic/pydantic/pull/11626)
* Fix deferred discriminator application logic by Viicos in [11591](https://github.com/pydantic/pydantic/pull/11591)

Packaging

* Bump `pydantic-core` to v2.33.0 by Viicos in [11631](https://github.com/pydantic/pydantic/pull/11631)

New Contributors

* cmenon12 made their first contribution in [11562](https://github.com/pydantic/pydantic/pull/11562)
* Jeukoh made their first contribution in [11611](https://github.com/pydantic/pydantic/pull/11611)

2.11.0b2

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.0b2)

What&#x27;s Changed

New Features

* Add experimental support for free threading by Viicos in [11516](https://github.com/pydantic/pydantic/pull/11516)

Fixes

* Fix `NotRequired` qualifier not taken into account in stringified annotation by Viicos in [11559](https://github.com/pydantic/pydantic/pull/11559)

Packaging

* Bump `pydantic-core` to v2.32.0 by Viicos in [11567](https://github.com/pydantic/pydantic/pull/11567)

New Contributors

* joren485 made their first contribution in [11547](https://github.com/pydantic/pydantic/pull/11547)

2.11.0b1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.0b1)

What&#x27;s Changed

New Features

* Support unsubstituted type variables with both a default and a bound or constraints by FyZzyss in https://github.com/pydantic/pydantic/pull/10789
* Add a `default_factory_takes_validated_data` property to `FieldInfo` by Viicos in https://github.com/pydantic/pydantic/pull/11034
* Raise a better error when a generic alias is used inside `type[]` by Viicos in https://github.com/pydantic/pydantic/pull/11088
* Properly support PEP 695 generics syntax by Viicos in https://github.com/pydantic/pydantic/pull/11189
* Properly support type variable defaults by Viicos in https://github.com/pydantic/pydantic/pull/11332
* Add support for validating v6, v7, v8 UUIDs by astei in https://github.com/pydantic/pydantic/pull/11436
* Improve alias configuration APIs by sydney-runkle in https://github.com/pydantic/pydantic/pull/11468

Changes

* Rework `create_model` field definitions format by Viicos in https://github.com/pydantic/pydantic/pull/11032
* Raise a deprecation warning when a field is annotated as final with a default value by Viicos in https://github.com/pydantic/pydantic/pull/11168
* Deprecate accessing `model_fields` and `model_computed_fields` on instances by Viicos in https://github.com/pydantic/pydantic/pull/11169
* **Breaking Change:** Move core schema generation logic for path types inside the `GenerateSchema` class by sydney-runkle in https://github.com/pydantic/pydantic/pull/10846
* Remove Python 3.8 Support by sydney-runkle in https://github.com/pydantic/pydantic/pull/11258
* Optimize calls to `get_type_ref` by Viicos in https://github.com/pydantic/pydantic/pull/10863
* Disable `pydantic-core` core schema validation by sydney-runkle in https://github.com/pydantic/pydantic/pull/11271

Performance

* Only evaluate `FieldInfo` annotations if required during schema building by Viicos in https://github.com/pydantic/pydantic/pull/10769
* Improve `__setattr__` performance of Pydantic models by caching setter functions by MarkusSintonen in https://github.com/pydantic/pydantic/pull/10868
* Improve annotation application performance by Viicos in https://github.com/pydantic/pydantic/pull/11186
* Improve performance of `_typing_extra` module by Viicos in https://github.com/pydantic/pydantic/pull/11255
* Refactor and optimize schema cleaning logic by Viicos in https://github.com/pydantic/pydantic/pull/11244
* Create a single dictionary when creating a `CoreConfig` instance by sydney-runkle in https://github.com/pydantic/pydantic/pull/11384
* Bump `pydantic-core` and thus use `SchemaValidator` and `SchemaSerializer` caching by sydney-runkle in https://github.com/pydantic/pydantic/pull/11402
* Reuse cached core schemas for parametrized generic Pydantic models by MarkusSintonen in https://github.com/pydantic/pydantic/pull/11434

Fixes

* Improve `TypeAdapter` instance repr by sydney-runkle in https://github.com/pydantic/pydantic/pull/10872
* Use the correct frame when instantiating a parametrized `TypeAdapter` by Viicos in https://github.com/pydantic/pydantic/pull/10893
* Infer final fields with a default value as class variables in the mypy plugin by Viicos in https://github.com/pydantic/pydantic/pull/11121
* Recursively unpack `Literal` values if using PEP 695 type aliases by Viicos in https://github.com/pydantic/pydantic/pull/11114
* Override `__subclasscheck__` on `ModelMetaclass` to avoid memory leak and performance issues by Viicos in https://github.com/pydantic/pydantic/pull/11116
* Remove unused `_extract_get_pydantic_json_schema()` parameter by Viicos in https://github.com/pydantic/pydantic/pull/11155
* Improve discriminated union error message for invalid union variants by Viicos in https://github.com/pydantic/pydantic/pull/11161
* Unpack PEP 695 type aliases if using the `Annotated` form by Viicos in https://github.com/pydantic/pydantic/pull/11109
* Add missing stacklevel in `deprecated_instance_property` warning by Viicos in https://github.com/pydantic/pydantic/pull/11200
* Copy `WithJsonSchema` schema to avoid sharing mutated data by thejcannon in https://github.com/pydantic/pydantic/pull/11014
* Do not cache parametrized models when in the process of parametrizing another model by Viicos in https://github.com/pydantic/pydantic/pull/10704
* Add discriminated union related metadata entries to the `CoreMetadata` definition by Viicos in https://github.com/pydantic/pydantic/pull/11216
* Consolidate schema definitions logic in the `_Definitions` class by Viicos in https://github.com/pydantic/pydantic/pull/11208
* Support initializing root model fields with values of the `root` type in the mypy plugin by Viicos in https://github.com/pydantic/pydantic/pull/11212
* Fix various issues with dataclasses and `use_attribute_docstrings` by Viicos in https://github.com/pydantic/pydantic/pull/11246
* Only compute normalized decimal places if necessary in `decimal_places_validator` by misrasaurabh1 in https://github.com/pydantic/pydantic/pull/11281
* Add support for `validation_alias` in the mypy plugin by Viicos in https://github.com/pydantic/pydantic/pull/11295
* Fix JSON Schema reference collection with `&quot;examples&quot;` keys by Viicos in https://github.com/pydantic/pydantic/pull/11305
* Do not transform model serializer functions as class methods in the mypy plugin by Viicos in https://github.com/pydantic/pydantic/pull/11298
* Simplify `GenerateJsonSchema.literal_schema()` implementation by misrasaurabh1 in https://github.com/pydantic/pydantic/pull/11321
* Add additional allowed schemes for `ClickHouseDsn` by Maze21127 in https://github.com/pydantic/pydantic/pull/11319
* Coerce decimal constraints to `Decimal` instances by Viicos in https://github.com/pydantic/pydantic/pull/11350
* Use the correct JSON Schema mode when handling function schemas by Viicos in https://github.com/pydantic/pydantic/pull/11367
* Improve exception message when encountering recursion errors during type evaluation by Viicos in https://github.com/pydantic/pydantic/pull/11356
* Always include `additionalProperties: True` for arbitrary dictionary schemas by austinyu in https://github.com/pydantic/pydantic/pull/11392
* Expose `fallback` parameter in serialization methods by Viicos in https://github.com/pydantic/pydantic/pull/11398
* Fix path serialization behavior by sydney-runkle in https://github.com/pydantic/pydantic/pull/11416
* Do not reuse validators and serializers during model rebuild by Viicos in https://github.com/pydantic/pydantic/pull/11429
* Collect model fields when rebuilding a model by Viicos in https://github.com/pydantic/pydantic/pull/11388
* Allow cached properties to be altered on frozen models by Viicos in https://github.com/pydantic/pydantic/pull/11432
* Fix tuple serialization for `Sequence` types by sydney-runkle in https://github.com/pydantic/pydantic/pull/11435
* Fix: do not check for `__get_validators__` on classes where `__get_pydantic_core_schema__` is also defined by tlambert03 in https://github.com/pydantic/pydantic/pull/11444
* Allow callable instances to be used as serializers by Viicos in https://github.com/pydantic/pydantic/pull/11451
* Improve error thrown when overriding field with a property by sydney-runkle in https://github.com/pydantic/pydantic/pull/11459
* Fix JSON Schema generation with referenceable core schemas holding JSON metadata by Viicos in https://github.com/pydantic/pydantic/pull/11475
* Support strict specification on union member types by sydney-runkle in https://github.com/pydantic/pydantic/pull/11481
* Implicitly set `validate_by_name` to `True` when `validate_by_alias` is `False` by sydney-runkle in https://github.com/pydantic/pydantic/pull/11503
* Change type of `Any` when synthesizing `BaseSettings.__init__` signature in the mypy plugin by Viicos in https://github.com/pydantic/pydantic/pull/11497
* Support type variable defaults referencing other type variables by Viicos in https://github.com/pydantic/pydantic/pull/11520
* Fix `ValueError` on year zero by davidhewitt in https://github.com/pydantic/pydantic-core/pull/1583
* `dataclass` `InitVar` shouldn&#x27;t be required on serialization by sydney-runkle in https://github.com/pydantic/pydantic-core/pull/1602

Packaging

* Add a `check_pydantic_core_version()` function by Viicos in https://github.com/pydantic/pydantic/pull/11324
* Remove `greenlet` development dependency by Viicos in https://github.com/pydantic/pydantic/pull/11351
* Use the `typing-inspection` library by Viicos in https://github.com/pydantic/pydantic/pull/11479
* Bump `pydantic-core` to `v2.31.1` by sydney-runkle in https://github.com/pydantic/pydantic/pull/11526

New Contributors

* FyZzyss made their first contribution in https://github.com/pydantic/pydantic/pull/10789
* tamird made their first contribution in https://github.com/pydantic/pydantic/pull/10948
* felixxm made their first contribution in https://github.com/pydantic/pydantic/pull/11077
* alexprabhat99 made their first contribution in https://github.com/pydantic/pydantic/pull/11082
* Kharianne made their first contribution in https://github.com/pydantic/pydantic/pull/11111
* mdaffad made their first contribution in https://github.com/pydantic/pydantic/pull/11177
* thejcannon made their first contribution in https://github.com/pydantic/pydantic/pull/11014
* thomasfrimannkoren made their first contribution in https://github.com/pydantic/pydantic/pull/11251
* usernameMAI made their first contribution in https://github.com/pydantic/pydantic/pull/11275
* ananiavito made their first contribution in https://github.com/pydantic/pydantic/pull/11302
* pawamoy made their first contribution in https://github.com/pydantic/pydantic/pull/11311
* Maze21127 made their first contribution in https://github.com/pydantic/pydantic/pull/11319
* kauabh made their first contribution in https://github.com/pydantic/pydantic/pull/11369
* jaceklaskowski made their first contribution in https://github.com/pydantic/pydantic/pull/11353
* tmpbeing made their first contribution in https://github.com/pydantic/pydantic/pull/11375
* petyosi made their first contribution in https://github.com/pydantic/pydantic/pull/11405
* austinyu made their first contribution in https://github.com/pydantic/pydantic/pull/11392
* mikeedjones made their first contribution in https://github.com/pydantic/pydantic/pull/11402
* astei made their first contribution in https://github.com/pydantic/pydantic/pull/11436
* dsayling made their first contribution in https://github.com/pydantic/pydantic/pull/11522
* sobolevn made their first contribution in https://github.com/pydantic/pydantic-core/pull/1645

2.11.0a2

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.0a2)

What&#x27;s Changed

Pydantic v2.11 is a version strongly focused on build time performance of Pydantic models (and core schema generation in general).
This is another early alpha release, meant to collect early feedback from users having issues with core schema builds.

Performance

* Create a single dictionary when creating a `CoreConfig` instance by sydney-runkle in [11384](https://github.com/pydantic/pydantic/pull/11384)

Fixes

* Use the correct JSON Schema mode when handling function schemas by Viicos in [11367](https://github.com/pydantic/pydantic/pull/11367)
* Fix JSON Schema reference logic with `examples` keys by Viicos in [11366](https://github.com/pydantic/pydantic/pull/11366)
* Improve exception message when encountering recursion errors during type evaluation by Viicos in [11356](https://github.com/pydantic/pydantic/pull/11356)
* Always include `additionalProperties: True` for arbitrary dictionary schemas by austinyu in [11392](https://github.com/pydantic/pydantic/pull/11392)
* Expose `fallback` parameter in serialization methods by Viicos in [11398](https://github.com/pydantic/pydantic/pull/11398)
* Fix path serialization behavior by sydney-runkle in [11416](https://github.com/pydantic/pydantic/pull/11416)

Packaging

* Bump `ruff` from 0.9.2 to 0.9.5 by Viicos in [11407](https://github.com/pydantic/pydantic/pull/11407)
* Bump `pydantic-core` to v2.29.0 by mikeedjones in [11402](https://github.com/pydantic/pydantic/pull/11402)
* Use locally-built rust with symbols &amp; pgo by davidhewitt in [11403](https://github.com/pydantic/pydantic/pull/11403)

New Contributors

* kauabh made their first contribution in [11369](https://github.com/pydantic/pydantic/pull/11369)
* jaceklaskowski made their first contribution in [11353](https://github.com/pydantic/pydantic/pull/11353)
* tmpbeing made their first contribution in [11375](https://github.com/pydantic/pydantic/pull/11375)
* petyosi made their first contribution in [11405](https://github.com/pydantic/pydantic/pull/11405)
* austinyu made their first contribution in [11392](https://github.com/pydantic/pydantic/pull/11392)
* mikeedjones made their first contribution in [11402](https://github.com/pydantic/pydantic/pull/11402)

2.11.0a1

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.11.0a1)

What&#x27;s Changed

Pydantic v2.11 is a version strongly focused on build time performance of Pydantic models (and core schema generation in general).
This is an early alpha release, meant to collect early feedback from users having issues with core schema builds.

New Features

* Support unsubstituted type variables with both a default and a bound or constraints by FyZzyss in [10789](https://github.com/pydantic/pydantic/pull/10789)
* Add a `default_factory_takes_validated_data` property to `FieldInfo` by Viicos in [11034](https://github.com/pydantic/pydantic/pull/11034)
* Raise a better error when a generic alias is used inside `type[]` by Viicos in [11088](https://github.com/pydantic/pydantic/pull/11088)
* Properly support PEP 695 generics syntax by Viicos in [11189](https://github.com/pydantic/pydantic/pull/11189)
* Properly support type variable defaults by Viicos in [11332](https://github.com/pydantic/pydantic/pull/11332)

Changes

* Rework `create_model` field definitions format by Viicos in [11032](https://github.com/pydantic/pydantic/pull/11032)
* Raise a deprecation warning when a field is annotated as final with a default value by Viicos in [11168](https://github.com/pydantic/pydantic/pull/11168)
* Deprecate accessing `model_fields` and `model_computed_fields` on instances by Viicos in [11169](https://github.com/pydantic/pydantic/pull/11169)
* Move core schema generation logic for path types inside the `GenerateSchema` class by sydney-runkle in [10846](https://github.com/pydantic/pydantic/pull/10846)
* Move `deque` schema gen to `GenerateSchema` class by sydney-runkle in [11239](https://github.com/pydantic/pydantic/pull/11239)
* Move `Mapping` schema gen to `GenerateSchema` to complete removal of `prepare_annotations_for_known_type` workaround by sydney-runkle in [11247](https://github.com/pydantic/pydantic/pull/11247)
* Remove Python 3.8 Support by sydney-runkle in [11258](https://github.com/pydantic/pydantic/pull/11258)
* Disable `pydantic-core` core schema validation by sydney-runkle in [11271](https://github.com/pydantic/pydantic/pull/11271)

Performance

* Only evaluate `FieldInfo` annotations if required during schema building by Viicos in [10769](https://github.com/pydantic/pydantic/pull/10769)
* Optimize calls to `get_type_ref` by Viicos in [10863](https://github.com/pydantic/pydantic/pull/10863)
* Improve `__setattr__` performance of Pydantic models by caching setter functions by MarkusSintonen in [10868](https://github.com/pydantic/pydantic/pull/10868)
* Improve annotation application performance by Viicos in [11186](https://github.com/pydantic/pydantic/pull/11186)
* Improve performance of `_typing_extra` module by Viicos in [11255](https://github.com/pydantic/pydantic/pull/11255)
* Refactor and optimize schema cleaning logic by Viicos and MarkusSintonen in [11244](https://github.com/pydantic/pydantic/pull/11244)

Fixes

* Add validation tests for `_internal/_validators.py` by tkasuz in [10763](https://github.com/pydantic/pydantic/pull/10763)
* Improve `TypeAdapter` instance repr by sydney-runkle in [10872](https://github.com/pydantic/pydantic/pull/10872)
* Revert &quot;ci: use locally built pydantic-core with debug symbols by sydney-runkle in [10942](https://github.com/pydantic/pydantic/pull/10942)
* Re-enable all FastAPI tests by tamird in [10948](https://github.com/pydantic/pydantic/pull/10948)
* Fix typo in HISTORY.md. by felixxm in [11077](https://github.com/pydantic/pydantic/pull/11077)
* Infer final fields with a default value as class variables in the mypy plugin by Viicos in [11121](https://github.com/pydantic/pydantic/pull/11121)
* Recursively unpack `Literal` values if using PEP 695 type aliases by Viicos in [11114](https://github.com/pydantic/pydantic/pull/11114)
* Override `__subclasscheck__` on `ModelMetaclass` to avoid memory leak and performance issues by Viicos in [11116](https://github.com/pydantic/pydantic/pull/11116)
* Remove unused `_extract_get_pydantic_json_schema()` parameter by Viicos in [11155](https://github.com/pydantic/pydantic/pull/11155)
* Add FastAPI and SQLModel to third-party tests by sydney-runkle in [11044](https://github.com/pydantic/pydantic/pull/11044)
* Fix conditional expressions syntax for third-party tests by Viicos in [11162](https://github.com/pydantic/pydantic/pull/11162)
* Move FastAPI tests to third-party workflow by Viicos in [11164](https://github.com/pydantic/pydantic/pull/11164)
* Improve discriminated union error message for invalid union variants by Viicos in [11161](https://github.com/pydantic/pydantic/pull/11161)
* Unpack PEP 695 type aliases if using the `Annotated` form by Viicos in [11109](https://github.com/pydantic/pydantic/pull/11109)
* Include `openapi-python-client` check in issue creation for third-party failures, use `main` branch by sydney-runkle in [11182](https://github.com/pydantic/pydantic/pull/11182)
* Add pandera third-party tests by Viicos in [11193](https://github.com/pydantic/pydantic/pull/11193)
* Add ODMantic third-party tests by sydney-runkle in [11197](https://github.com/pydantic/pydantic/pull/11197)
* Add missing stacklevel in `deprecated_instance_property` warning by Viicos in [11200](https://github.com/pydantic/pydantic/pull/11200)
* Copy `WithJsonSchema` schema to avoid sharing mutated data by thejcannon in [11014](https://github.com/pydantic/pydantic/pull/11014)
* Do not cache parametrized models when in the process of parametrizing another model by Viicos in [10704](https://github.com/pydantic/pydantic/pull/10704)
* Re-enable Beanie third-party tests by Viicos in [11214](https://github.com/pydantic/pydantic/pull/11214)
* Add discriminated union related metadata entries to the `CoreMetadata` definition by Viicos in [11216](https://github.com/pydantic/pydantic/pull/11216)
* Consolidate schema definitions logic in the `_Definitions` class by Viicos in [11208](https://github.com/pydantic/pydantic/pull/11208)
* Support initializing root model fields with values of the `root` type in the mypy plugin by Viicos in [11212](https://github.com/pydantic/pydantic/pull/11212)
* Fix various issues with dataclasses and `use_attribute_docstrings` by Viicos in [11246](https://github.com/pydantic/pydantic/pull/11246)
* Only compute normalized decimal places if necessary in `decimal_places_validator` by misrasaurabh1 in [11281](https://github.com/pydantic/pydantic/pull/11281)
* Fix two misplaced sentences in validation errors documentation by ananiavito in [11302](https://github.com/pydantic/pydantic/pull/11302)
* Fix mkdocstrings inventory example in documentation by pawamoy in [11311](https://github.com/pydantic/pydantic/pull/11311)
* Add support for `validation_alias` in the mypy plugin by Viicos in [11295](https://github.com/pydantic/pydantic/pull/11295)
* Do not transform model serializer functions as class methods in the mypy plugin by Viicos in [11298](https://github.com/pydantic/pydantic/pull/11298)
* Simplify `GenerateJsonSchema.literal_schema()` implementation by misrasaurabh1 in [11321](https://github.com/pydantic/pydantic/pull/11321)
* Add additional allowed schemes for `ClickHouseDsn` by Maze21127 in [11319](https://github.com/pydantic/pydantic/pull/11319)
* Coerce decimal constraints to `Decimal` instances by Viicos in [11350](https://github.com/pydantic/pydantic/pull/11350)
* Fix `ValueError` on year zero by davidhewitt in [pydantic-core1583](https://github.com/pydantic/pydantic-core/pull/1583)

Packaging

* Bump dawidd6/action-download-artifact from 6 to 7 by dependabot in [11018](https://github.com/pydantic/pydantic/pull/11018)
* Re-enable memray related tests on Python 3.12+ by Viicos in [11191](https://github.com/pydantic/pydantic/pull/11191)
* Bump astral-sh/setup-uv to 5 by dependabot in [11205](https://github.com/pydantic/pydantic/pull/11205)
* Bump `ruff` to v0.9.0 by sydney-runkle in [11254](https://github.com/pydantic/pydantic/pull/11254)
* Regular `uv.lock` deps update by sydney-runkle in [11333](https://github.com/pydantic/pydantic/pull/11333)
* Add a `check_pydantic_core_version()` function by Viicos in [11324](https://github.com/pydantic/pydantic/pull/11324)
* Remove `greenlet` development dependency by Viicos in [11351](https://github.com/pydantic/pydantic/pull/11351)
* Bump `pydantic-core` to v2.28.0 by Viicos in [11364](https://github.com/pydantic/pydantic/pull/11364)

New Contributors

* FyZzyss made their first contribution in [10789](https://github.com/pydantic/pydantic/pull/10789)
* tamird made their first contribution in [10948](https://github.com/pydantic/pydantic/pull/10948)
* felixxm made their first contribution in [11077](https://github.com/pydantic/pydantic/pull/11077)
* alexprabhat99 made their first contribution in [11082](https://github.com/pydantic/pydantic/pull/11082)
* Kharianne made their first contribution in [11111](https://github.com/pydantic/pydantic/pull/11111)
* mdaffad made their first contribution in [11177](https://github.com/pydantic/pydantic/pull/11177)
* thejcannon made their first contribution in [11014](https://github.com/pydantic/pydantic/pull/11014)
* thomasfrimannkoren made their first contribution in [11251](https://github.com/pydantic/pydantic/pull/11251)
* usernameMAI made their first contribution in [11275](https://github.com/pydantic/pydantic/pull/11275)
* ananiavito made their first contribution in [11302](https://github.com/pydantic/pydantic/pull/11302)
* pawamoy made their first contribution in [11311](https://github.com/pydantic/pydantic/pull/11311)
* Maze21127 made their first contribution in [11319](https://github.com/pydantic/pydantic/pull/11319)

2.10.6

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.10.6)

What&#x27;s Changed

Fixes

* Fix JSON Schema reference collection with `&#x27;examples&#x27;` keys by Viicos in [11325](https://github.com/pydantic/pydantic/pull/11325)
* Fix url python serialization by sydney-runkle in [11331](https://github.com/pydantic/pydantic/pull/11331)

2.10.5

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.10.5)

What&#x27;s Changed

Fixes

* Remove custom MRO implementation of Pydantic models by Viicos in [11184](https://github.com/pydantic/pydantic/pull/11184)
* Fix URL serialization for unions by sydney-runkle in [11233](https://github.com/pydantic/pydantic/pull/11233)

2.10.4

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.10.4)

What&#x27;s Changed

Fixes

* Fix for comparison of `AnyUrl` objects by alexprabhat99 in [11082](https://github.com/pydantic/pydantic/pull/11082)
* Properly fetch PEP 695 type params for functions, do not fetch annotations from signature by Viicos in [11093](https://github.com/pydantic/pydantic/pull/11093)
* Include JSON Schema input core schema in function schemas by Viicos in [11085](https://github.com/pydantic/pydantic/pull/11085)
* Add `len` to `_BaseUrl` to avoid TypeError by Kharianne in [11111](https://github.com/pydantic/pydantic/pull/11111)
* Make sure the type reference is removed from the seen references by Viicos in [11143](https://github.com/pydantic/pydantic/pull/11143)

New Contributors

* FyZzyss made their first contribution in [10789](https://github.com/pydantic/pydantic/pull/10789)
* tamird made their first contribution in [10948](https://github.com/pydantic/pydantic/pull/10948)
* felixxm made their first contribution in [11077](https://github.com/pydantic/pydantic/pull/11077)
* alexprabhat99 made their first contribution in [11082](https://github.com/pydantic/pydantic/pull/11082)
* Kharianne made their first contribution in [11111](https://github.com/pydantic/pydantic/pull/11111)

Packaging

* Bump `pydantic-core` to v2.27.2 by davidhewitt in [11138](https://github.com/pydantic/pydantic/pull/11138)

2.10.3

[GitHub release](https://github.com/pydantic/pydantic/releases/tag/v2.10.3)

What&#x27;s Changed

Fixes

* Set fields when `defer_build` is set on Pydantic dataclasses by Viicos in [10984](https://github.com/pydantic/pydantic/pull/10984)
* Do not resolve the JSON Schema reference for `dict` core schema keys by Viicos in [10989](https://github.com/pydantic/pydantic/pull/10989)
* Use the globals of the function when evaluating the return type for `PlainSerializer` and `WrapSerializer` functions by Viicos in [11008](h

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