What's Changed

Packaging

• Check for email-validator version >= 2.0 by @commonism in #6033
• Upgrade `ruff`` target version to Python 3.8 by @Elkiwa in #8341
• Update to pydantic-extra-types==2.4.1 by @yezz123 in #8478
• Update to pyright==1.1.345 by @Viicos in #8453
• Update pydantic-core from 2.14.6 to 2.16.1, significant changes from these updates are described below, full changelog here

New Features

• Add NatsDsn by @ekeew in #6874
• Add ConfigDict.ser_json_inf_nan by @davidhewitt in #8159
• Add types.OnErrorOmit by @adriangb in #8222
• Support AliasGenerator usage by @sydney-runkle in #8282
• Add Pydantic People Page to docs by @sydney-runkle in #8345
• Support yyyy-MM-DD datetime parsing by @sydney-runkle in #8404
• Added bits conversions to the ByteSize class #8415 by @luca-matei in #8507
• Enable json schema creation with type ByteSize by @geospackle in #8537
• Add eval_type_backport to handle union operator and builtin generic subscripting in older Pythons by @alexmojaki in #8209
• Add support for dataclass fields init by @dmontagu in #8552
• Implement pickling for ValidationError by @davidhewitt in pydantic/pydantic-core#1119
• Add unified tuple validator that can handle "variadic" tuples via PEP-646 by @dmontagu in pydantic/pydantic-core#865

Changes

• Drop Python3.7 support by @hramezani in #7188
• Drop Python 3.7, and PyPy 3.7 and 3.8 by @davidhewitt in pydantic/pydantic-core#1129
• Use positional-only self in BaseModel constructor, so no field name can ever conflict with it by @ariebovenberg in #8072
• Make @validate_call return a function instead of a custom descriptor - fixes binding issue with inheritance and adds self/cls argument to validation errors by @alexmojaki in #8268
• Exclude BaseModel docstring from JSON schema description by @sydney-runkle in #8352
• Introducing classproperty decorator for model_computed_fields by @Jocelyn-Gas in #8437
• Explicitly raise an error if field names clashes with types by @Viicos in #8243
• Use stricter serializer for unions of simple types by @alexdrydew pydantic/pydantic-core#1132

Performance

• Add Codspeed profiling Actions workflow by @lambertsbennett in #8054
• Improve int extraction by @samuelcolvin in pydantic/pydantic-core#1155
• Improve performance of recursion guard by @samuelcolvin in pydantic/pydantic-core#1156
• dataclass serialization speedups by @samuelcolvin in pydantic/pydantic-core#1162
• Avoid HashMap creation when looking up small JSON objects in LazyIndexMaps by @samuelcolvin in pydantic/jiter#55
• use hashbrown to speedup python string caching by @davidhewitt in pydantic/jiter#51
• Replace Peak with more efficient Peek by @davidhewitt in pydantic/jiter#48

Fixes

• Move getattr warning in deprecated BaseConfig by @tlambert03 in #7183
• Only hash model_fields, not whole __dict__ by @alexmojaki in #7786
• Fix mishandling of unions while freezing types in the mypy plugin by @dmontagu in #7411
• Fix mypy error on untyped ClassVar by @vincent-hachin-wmx in #8138
• Only compare pydantic fields in BaseModel.__eq__ instead of whole __dict__ by @QuentinSoubeyranAqemia in #7825
• Update strict docstring in model_validate method. by @LukeTonin in #8223
• Fix overload position of computed_field by @Viicos in #8227
• Fix custom type type casting used in multiple attributes by @ianhfc in #8066
• Fix issue not allowing validate_call decorator to be dynamically assigned to a class method by @jusexton in #8249
• Fix issue unittest.mock deprecation warnings by @ibleedicare in #8262
• Added tests for the case JsonValue contains subclassed primitive values by @jusexton in #8286
• Fix mypy error on free before validator (classmethod) by @sydney-runkle in #8285
• Fix to_snake conversion by @jevins09 in #8316
• Fix type annotation of ModelMetaclass.__prepare__ by @slanzmich in #8305
• Disallow config specification when initializing a TypeAdapter when the annotated type has config already by @sydney-runkle in #8365
• Fix a naming issue with JSON schema for generics parametrized by recursive type aliases by @dmontagu in #8389
• Fix type annotation in pydantic people script by @shenxiangzhuang in #8402
• Add support for field alias in dataclass signature by @NeevCohen in #8387
• Fix bug with schema generation with Field(...) in a forward ref by @dmontagu in #8494
• Fix ordering of keys in __dict__ with model_construct call by @sydney-runkle in #8500
• Fix module path_type creation when globals does not contain __name__ by @hramezani in #8470
• Fix for namespace issue with dataclasses with from __future__ import annotations by @sydney-runkle in #8513
• Fix: make function validator types positional-only by @pmmmwh in #8479
• Fix usage of @deprecated by @Viicos in #8294
• Add more support for private attributes in model_construct call by @sydney-runkle in #8525
• Use a stack for the types namespace by @dmontagu in #8378
• Fix schema-building bug with TypeAliasType for types with refs by @dmontagu in #8526
• Support pydantic.Field(repr=False) in dataclasses by @tigeryy2 in #8511
• Override dataclass_transform behavior for RootModel by @Viicos in #8163
• Refactor signature generation for simplicity by @sydney-runkle in #8572
• Fix ordering bug of PlainValidator annotation by @Anvil in #8567
• Fix exclude_none for json serialization of computed_fields by @sydney-runkle in pydantic/pydantic-core#1098
• Support yyyy-MM-DD string for datetimes by @sydney-runkle in pydantic/pydantic-core#1124

New Contributors

pydantic

• @ekeew made their first contribution in #6874
• @lambertsbennett made their first contribution in #8054
• @vincent-hachin-wmx made their first contribution in #8138
• @QuentinSoubeyranAqemia made their first contribution in #7825
• @ariebovenberg made their first contribution in #8072
• @LukeTonin made their first contribution in #8223
• @denisart made their first contribution in #8231
• @ianhfc made their first contribution in #8066
• @eonu made their first contribution in #8255
• @amandahla made their first contribution in #8263
• @ibleedicare made their first contribution in #8262
• @jevins09 made their first contribution in #8316
• @cuu508 made their first contribution in #8322
• @slanzmich made their first contribution in #8305
• @jensenbox made their first contribution in #8331
• @szepeviktor made their first contribution in #8356
• @Elkiwa made their first contribution in #8341
• @parhamfh made their first contribution in #8395
• @shenxiangzhuang made their first contribution in #8402
• @NeevCohen made their first contribution in #8387
• @zby made their first contribution in #8497
• @patelnets made their first contribution in #8491
• @edwardwli made their first contribution in #8503
• @luca-matei made their first contribution in #8507
• @Jocelyn-Gas made their first contribution in #8437
• @bL34cHig0 made their first contribution in #8501
• @tigeryy2 made their first contribution in #8511
• @geospackle made their first contribution in #8537
• @Anvil made their first contribution in #8567

pydantic-core

• @mariuswinger made their first contribution in pydantic/pydantic-core#1087
• @adamchainz made their first contribution in pydantic/pydantic-core#1090
• @akx made their first contribution in pydantic/pydantic-core#1123

Full Changelog: https://github.com/pydantic/pydantic/compare/v2.5.3...v2.6.0b1