v2.0b3 (2023-06-16)

Third beta pre-release of Pydantic V2

See the full changelog here

v2.0b2 (2023-06-03)

Add from_attributes runtime flag to TypeAdapter.validate_python and BaseModel.model_validate.

See the full changelog here

v2.0b1 (2023-06-01)

First beta pre-release of Pydantic V2

See the full changelog here

v2.0a4 (2023-05-05)

Fourth pre-release of Pydantic V2

See the full changelog here

v2.0a3 (2023-04-20)

Third pre-release of Pydantic V2

See the full changelog here

v2.0a2 (2023-04-12)

Second pre-release of Pydantic V2

See the full changelog here

v2.0a1 (2023-04-03)

First pre-release of Pydantic V2!

See this post for more details.

v1.10.9 (2023-06-07)

Fix trailing zeros not ignored in Decimal validation, #5968 by @hramezani
Fix mypy plugin for v1.4.0, #5928 by @cdce8p
Add future and past date hypothesis strategies, #5850 by @bschoenmaeckers
Discourage usage of Cython 3 with Pydantic 1.x, #5845 by @lig

v1.10.8 (2023-05-23)

Fix a bug in Literal usage with typing-extension==4.6.0, #5826 by @hramezani
This solves the (closed) issue #3849 where aliased fields that use discriminated union fail to validate when the data contains the non-aliased field name, #5736 by @benwah
Update email-validator dependency to >=2.0.0post2, #5627 by @adriangb
update AnyClassMethod for changes in python/typeshed#9771, #5505 by @ITProKyle

v1.10.7 (2023-03-22)

Fix creating schema from model using ConstrainedStr with regex as dict key, #5223 by @matejetz
Address bug in mypy plugin caused by explicit_package_bases=True, #5191 by @dmontagu
Add implicit defaults in the mypy plugin for Field with no default argument, #5190 by @dmontagu
Fix schema generated for Enum values used as Literals in discriminated unions, #5188 by @javibookline
Fix mypy failures caused by the pydantic mypy plugin when users define from_orm in their own classes, #5187 by @dmontagu
Fix InitVar usage with pydantic dataclasses, mypy version 1.1.1 and the custom mypy plugin, #5162 by @cdce8p

v1.10.6 (2023-03-08)

Implement logic to support creating validators from non standard callables by using defaults to identify them and unwrapping functools.partial and functools.partialmethod when checking the signature, #5126 by @JensHeinrich
Fix mypy plugin for v1.1.1, and fix dataclass_transform decorator for pydantic dataclasses, #5111 by @cdce8p
Raise ValidationError, not ConfigError, when a discriminator value is unhashable, #4773 by @kurtmckee

v1.10.5 (2023-02-15)

Fix broken parametrized bases handling with GenericModels with complex sets of models, #5052 by @MarkusSintonen
Invalidate mypy cache if plugin config changes, #5007 by @cdce8p
Fix RecursionError when deep-copying dataclass types wrapped by pydantic, #4949 by @mbillingr
Fix X | Y union syntax breaking GenericModel, #4146 by @thenx
Switch coverage badge to show coverage for this branch/release, #5060 by @samuelcolvin

v1.10.4 (2022-12-30)

Change dependency to typing-extensions>=4.2.0, #4885 by @samuelcolvin

v1.10.3 (2022-12-29)

NOTE: v1.10.3 was "yanked" from PyPI due to #4885 which is fixed in v1.10.4

fix parsing of custom root models, #4883 by @gou177
fix: use dataclass proxy for frozen or empty dataclasses, #4878 by @PrettyWood
Fix schema and schema_json on models where a model instance is a one of default values, #4781 by @Bobronium
Add Jina AI to sponsors on docs index page, #4767 by @samuelcolvin
fix: support assignment on DataclassProxy, #4695 by @PrettyWood
Add postgresql+psycopg as allowed scheme for PostgreDsn to make it usable with SQLAlchemy 2, #4689 by @morian
Allow dict schemas to have both patternProperties and additionalProperties, #4641 by @jparise
Fixes error passing None for optional lists with unique_items, #4568 by @mfulgo
Fix GenericModel with Callable param raising a TypeError, #4551 by @mfulgo
Fix field regex with StrictStr type annotation, #4538 by @sisp
Correct dataclass_transform keyword argument name from field_descriptors to field_specifiers, #4500 by @samuelcolvin
fix: avoid multiple calls of __post_init__ when dataclasses are inherited, #4487 by @PrettyWood
Reduce the size of binary wheels, #2276 by @samuelcolvin

v1.10.2 (2022-09-05)

Revert Change: Revert percent encoding of URL parts which was originally added in #4224, #4470 by @samuelcolvin
Prevent long (length > 4_300) strings/bytes as input to int fields, see python/cpython#95778 and CVE-2020-10735, #1477 by @samuelcolvin
fix: dataclass wrapper was not always called, #4477 by @PrettyWood
Use tomllib on Python 3.11 when parsing mypy configuration, #4476 by @hauntsaninja
Basic fix of GenericModel cache to detect order of arguments in Union models, #4474 by @sveinugu
Fix mypy plugin when using bare types like list and dict as default_factory, #4457 by @samuelcolvin

v1.10.1 (2022-08-31)

Add __hash__ method to pydancic.color.Color class, #4454 by @czaki

v1.10.0 (2022-08-30)

Refactor the whole pydantic dataclass decorator to really act like its standard lib equivalent. It hence keeps __eq__, __hash__, ... and makes comparison with its non-validated version possible. It also fixes usage of frozen dataclasses in fields and usage of default_factory in nested dataclasses. The support of Config.extra has been added. Finally, config customization directly via a dict is now possible, #2557 by @PrettyWood

BREAKING CHANGES:
- The compiled boolean (whether pydantic is compiled with cython) has been moved from main.py to version.py
- Now that Config.extra is supported, dataclass ignores by default extra arguments (like BaseModel)
Fix PEP487 __set_name__ protocol in BaseModel for PrivateAttrs, #4407 by @tlambert03
Allow for custom parsing of environment variables via parse_env_var in Config, #4406 by @acmiyaguchi
Rename master to main, #4405 by @hramezani
Fix StrictStr does not raise ValidationError when max_length is present in Field, #4388 by @hramezani
Make SecretStr and SecretBytes hashable, #4387 by @chbndrhnns
Fix StrictBytes does not raise ValidationError when max_length is present in Field, #4380 by @JeanArhancet
Add support for bare type, #4375 by @hramezani
Support Python 3.11, including binaries for 3.11 in PyPI, #4374 by @samuelcolvin
Add support for re.Pattern, #4366 by @hramezani
Fix __post_init_post_parse__ is incorrectly passed keyword arguments when no __post_init__ is defined, #4361 by @hramezani
Fix implicitly importing ForwardRef and Callable from pydantic.typing instead of typing and also expose MappingIntStrAny, #4358 by @aminalaee
remove Any types from the dataclass decorator so it can be used with the disallow_any_expr mypy option, #4356 by @DetachHead
moved repo to pydantic/pydantic, #4348 by @yezz123
fix "extra fields not permitted" error when dataclass with Extra.forbid is validated multiple times, #4343 by @detachhead
Add Python 3.9 and 3.10 examples to docs, #4339 by @Bobronium
Discriminated union models now use oneOf instead of anyOf when generating OpenAPI schema definitions, #4335 by @MaxwellPayne
Allow type checkers to infer inner type of Json type. Json[list[str]] will be now inferred as list[str], Json[Any] should be used instead of plain Json. Runtime behaviour is not changed, #4332 by @Bobronium
Allow empty string aliases by using a alias is not None check, rather than bool(alias), #4253 by @sergeytsaplin
Update ForwardRefs in Field.outer_type_, #4249 by @JacobHayes
The use of __dataclass_transform__ has been replaced by typing_extensions.dataclass_transform, which is the preferred way to mark pydantic models as a dataclass under PEP 681, #4241 by @multimeric
Use parent model's Config when validating nested NamedTuple fields, #4219 by @synek
Update BaseModel.construct to work with aliased Fields, #4192 by @kylebamos
Catch certain raised errors in smart_deepcopy and revert to deepcopy if so, #4184 by @coneybeare
Add Config.anystr_upper and to_upper kwarg to constr and conbytes, #4165 by @satheler
Fix JSON schema for set and frozenset when they include default values, #4155 by @aminalaee
Teach the mypy plugin that methods decorated by @validator are classmethods, #4102 by @DMRobertson
Improve mypy plugin's ability to detect required fields, #4086 by @richardxia
Support fields of type Type[] in schema, #4051 by @aminalaee
Add default value in JSON Schema when const=True, #4031 by @aminalaee
Adds reserved word check to signature generation logic, #4011 by @strue36
Fix Json strategy failure for the complex nested field, #4005 by @sergiosim
Add JSON-compatible float constraint allow_inf_nan, #3994 by @tiangolo
Remove undefined behaviour when env_prefix had characters in common with env_nested_delimiter, #3975 by @arsenron
Support generics model with create_model, #3945 by @hot123s
allow submodels to overwrite extra field info, #3934 by @PrettyWood
Document and test structural pattern matching (PEP 636) on BaseModel, #3920 by @irgolic
Fix incorrect deserialization of python timedelta object to ISO 8601 for negative time deltas. Minus was serialized in incorrect place ("P-1DT23H59M59.888735S" instead of correct "-P1DT23H59M59.888735S"), #3899 by @07pepa
Fix validation of discriminated union fields with an alias when passing a model instance, #3846 by @chornsby
Add a CockroachDsn type to validate CockroachDB connection strings. The type supports the following schemes: cockroachdb, cockroachdb+psycopg2 and cockroachdb+asyncpg, #3839 by @blubber
Fix MyPy plugin to not override pre-existing __init__ method in models, #3824 by @patrick91
Fix mypy version checking, #3783 by @KotlinIsland
support overwriting dunder attributes of BaseModel instances, #3777 by @PrettyWood
Added ConstrainedDate and condate, #3740 by @hottwaj
Support kw_only in dataclasses, #3670 by @detachhead
Add comparison method for Color class, #3646 by @aminalaee
Drop support for python3.6, associated cleanup, #3605 by @samuelcolvin
created new function to_lower_camel() for "non pascal case" camel case, #3463 by @schlerp
Add checks to default and default_factory arguments in Mypy plugin, #3430 by @klaa97
fix mangling of inspect.signature for BaseModel, #3413 by @fix-inspect-signature
Adds the SecretField abstract class so that all the current and future secret fields like SecretStr and SecretBytes will derive from it, #3409 by @expobrain
Support multi hosts validation in PostgresDsn, #3337 by @rglsk
Fix parsing of very small numeric timedelta values, #3315 by @samuelcolvin
Update SecretsSettingsSource to respect config.case_sensitive, #3273 by @JeanArhancet
Add MongoDB network data source name (DSN) schema, #3229 by @snosratiershad
Add support for multiple dotenv files, #3222 by @rekyungmin
Raise an explicit ConfigError when multiple fields are incorrectly set for a single validator, #3215 by @SunsetOrange
Allow ellipsis on Fields inside Annotated for TypedDicts required, #3133 by @ezegomez
Catch overflow errors in int_validator, #3112 by @ojii
Adds a __rich_repr__ method to Representation class which enables pretty printing with Rich, #3099 by @willmcgugan
Add percent encoding in AnyUrl and descendent types, #3061 by @FaresAhmedb
validate_arguments decorator now supports alias, #3019 by @MAD-py
Avoid __dict__ and __weakref__ attributes in AnyUrl and IP address fields, #2890 by @nuno-andre
Add ability to use Final in a field type annotation, #2766 by @uriyyo
Update requirement to typing_extensions>=4.1.0 to guarantee dataclass_transform is available, #4424 by @commonism
Add Explosion and AWS to main sponsors, #4413 by @samuelcolvin
Update documentation for copy_on_model_validation to reflect recent changes, #4369 by @samuelcolvin
Runtime warning if __slots__ is passed to create_model, __slots__ is then ignored, #4432 by @samuelcolvin
Add type hints to BaseSettings.Config to avoid mypy errors, also correct mypy version compatibility notice in docs, #4450 by @samuelcolvin

v1.10.0b1 (2022-08-24)

Pre-release, see the GitHub release for details.

v1.10.0a2 (2022-08-24)

Pre-release, see the GitHub release for details.

v1.10.0a1 (2022-08-22)

Pre-release, see the GitHub release for details.

v1.9.2 (2022-08-11)

Revert Breaking Change: v1.9.1 introduced a breaking change where model fields were deep copied by default, this release reverts the default behaviour to match v1.9.0 and before, while also allow deep-copy behaviour via copy_on_model_validation = 'deep'. See #4092 for more information.

Allow for shallow copies of model fields, Config.copy_on_model_validation is now a str which must be 'none', 'deep', or 'shallow' corresponding to not copying, deep copy & shallow copy; default 'shallow', #4093 by @timkpaine

v1.9.1 (2022-05-19)

Thank you to pydantic's sponsors: @tiangolo, @stellargraph, @JonasKs, @grillazz, @Mazyod, @kevinalh, @chdsbd, @povilasb, @povilasb, @jina-ai, @mainframeindustries, @robusta-dev, @SendCloud, @rszamszur, @jodal, @hardbyte, @corleyma, @daddycocoaman, @Rehket, @jokull, @reillysiemens, @westonsteimel, @primer-io, @koxudaxi, @browniebroke, @stradivari96, @adriangb, @kamalgill, @jqueguiner, @dev-zero, @datarootsio, @RedCarpetUp for their kind support.

Limit the size of generics._generic_types_cache and generics._assigned_parameters to avoid unlimited increase in memory usage, #4083 by @samuelcolvin
Add Jupyverse and FPS as Jupyter projects using pydantic, #4082 by @davidbrochart
Speedup __isinstancecheck__ on pydantic models when the type is not a model, may also avoid memory "leaks", #4081 by @samuelcolvin
Fix in-place modification of FieldInfo that caused problems with PEP 593 type aliases, #4067 by @adriangb
Add support for autocomplete in VS Code via __dataclass_transform__ when using pydantic.dataclasses.dataclass, #4006 by @giuliano-oliveira
Remove benchmarks from codebase and docs, #3973 by @samuelcolvin
Typing checking with pyright in CI, improve docs on vscode/pylance/pyright, #3972 by @samuelcolvin
Fix nested Python dataclass schema regression, #3819 by @himbeles
Update documentation about lazy evaluation of sources for Settings, #3806 by @garyd203
Prevent subclasses of bytes being converted to bytes, #3706 by @samuelcolvin
Fixed "error checking inheritance of" when using PEP585 and PEP604 type hints, #3681 by @aleksul
Allow self referencing ClassVars in models, #3679 by @samuelcolvin
Breaking Change, see #4106: Fix issue with self-referencing dataclass, #3675 by @uriyyo
Include non-standard port numbers in rendered URLs, #3652 by @dolfinus
Config.copy_on_model_validation does a deep copy and not a shallow one, #3641 by @PrettyWood
fix: clarify that discriminated unions do not support singletons, #3636 by @tommilligan
Add read_text(encoding='utf-8') for setup.py, #3625 by @hswong3i
Fix JSON Schema generation for Discriminated Unions within lists, #3608 by @samuelcolvin

v1.9.0 (2021-12-31)

Thank you to pydantic's sponsors: @sthagen, @timdrijvers, @toinbis, @koxudaxi, @ginomempin, @primer-io, @and-semakin, @westonsteimel, @reillysiemens, @es3n1n, @jokull, @JonasKs, @Rehket, @corleyma, @daddycocoaman, @hardbyte, @datarootsio, @jodal, @aminalaee, @rafsaf, @jqueguiner, @chdsbd, @kevinalh, @Mazyod, @grillazz, @JonasKs, @simw, @leynier, @xfenix for their kind support.

Highlights

add Python 3.10 support, #2885 by @PrettyWood
Discriminated unions, #619 by @PrettyWood
Config.smart_union for better union logic, #2092 by @PrettyWood
Binaries for Macos M1 CPUs, #3498 by @samuelcolvin
Complex types can be set via nested environment variables, e.g. foo___bar, #3159 by @Air-Mark
add a dark mode to pydantic documentation, #2913 by @gbdlin
Add support for autocomplete in VS Code via __dataclass_transform__, #2721 by @tiangolo
Add "exclude" as a field parameter so that it can be configured using model config, #660 by @daviskirk

v1.9.0 (2021-12-31) Changes

Apply update_forward_refs to Config.json_encodes prevent name clashes in types defined via strings, #3583 by @samuelcolvin
Extend pydantic's mypy plugin to support mypy versions 0.910, 0.920, 0.921 & 0.930, #3573 & #3594 by @PrettyWood, @christianbundy, @samuelcolvin

v1.9.0a2 (2021-12-24) Changes

support generic models with discriminated union, #3551 by @PrettyWood
keep old behaviour of json() by default, #3542 by @PrettyWood
Removed typing-only __root__ attribute from BaseModel, #3540 by @layday
Build Python 3.10 wheels, #3539 by @mbachry
Fix display of extra fields with model __repr__, #3234 by @cocolman
models copied via Config.copy_on_model_validation always have all fields, #3201 by @PrettyWood
nested ORM from nested dictionaries, #3182 by @PrettyWood
fix link to discriminated union section by @PrettyWood

v1.9.0a1 (2021-12-18) Changes

Add support for Decimal-specific validation configurations in Field(), additionally to using condecimal(), to allow better support from editors and tooling, #3507 by @tiangolo
Add arm64 binaries suitable for MacOS with an M1 CPU to PyPI, #3498 by @samuelcolvin
Fix issue where None was considered invalid when using a Union type containing Any or object, #3444 by @tharradine
When generating field schema, pass optional field argument (of type pydantic.fields.ModelField) to __modify_schema__() if present, #3434 by @jasujm
Fix issue when pydantic fail to parse typing.ClassVar string type annotation, #3401 by @uriyyo
Mention Python >= 3.9.2 as an alternative to typing_extensions.TypedDict, #3374 by @BvB93
Changed the validator method name in the Custom Errors example to more accurately describe what the validator is doing; changed from name_must_contain_space to value_must_equal_bar, #3327 by @michaelrios28
Add AmqpDsn class, #3254 by @kludex
Always use Enum value as default in generated JSON schema, #3190 by @joaommartins
Add support for Mypy 0.920, #3175 by @christianbundy
validate_arguments now supports extra customization (used to always be Extra.forbid), #3161 by @PrettyWood
Complex types can be set by nested environment variables, #3159 by @Air-Mark
Fix mypy plugin to collect fields based on pydantic.utils.is_valid_field so that it ignores untyped private variables, #3146 by @hi-ogawa
fix validate_arguments issue with Config.validate_all, #3135 by @PrettyWood
avoid dict coercion when using dict subclasses as field type, #3122 by @PrettyWood
add support for object type, #3062 by @PrettyWood
Updates pydantic dataclasses to keep _special properties on parent classes, #3043 by @zulrang
Add a TypedDict class for error objects, #3038 by @matthewhughes934
Fix support for using a subclass of an annotation as a default, #3018 by @JacobHayes
make create_model_from_typeddict mypy compliant, #3008 by @PrettyWood
Make multiple inheritance work when using PrivateAttr, #2989 by @hmvp
Parse environment variables as JSON, if they have a Union type with a complex subfield, #2936 by @cbartz
Prevent StrictStr permitting Enum values where the enum inherits from str, #2929 by @samuelcolvin
Make SecretsSettingsSource parse values being assigned to fields of complex types when sourced from a secrets file, just as when sourced from environment variables, #2917 by @davidmreed
add a dark mode to pydantic documentation, #2913 by @gbdlin
Make pydantic-mypy plugin compatible with pyproject.toml configuration, consistent with mypy changes. See the doc for more information, #2908 by @jrwalk
add Python 3.10 support, #2885 by @PrettyWood
Correctly parse generic models with Json[T], #2860 by @geekingfrog
Update contrib docs re: Python version to use for building docs, #2856 by @paxcodes
Clarify documentation about pydantic's support for custom validation and strict type checking, despite pydantic being primarily a parsing library, #2855 by @paxcodes
Fix schema generation for Deque fields, #2810 by @sergejkozin
fix an edge case when mixing constraints and Literal, #2794 by @PrettyWood
Fix postponed annotation resolution for NamedTuple and TypedDict when they're used directly as the type of fields within Pydantic models, #2760 by @jameysharp
Fix bug when mypy plugin fails on construct method call for BaseSettings derived classes, #2753 by @uriyyo
Add function overloading for a pydantic.create_model function, #2748 by @uriyyo
Fix mypy plugin issue with self field declaration, #2743 by @uriyyo
The colon at the end of the line "The fields which were supplied when user was initialised:" suggests that the code following it is related. Changed it to a period, #2733 by @krisaoe
Renamed variable schema to schema_ to avoid shadowing of global variable name, #2724 by @shahriyarr
Add support for autocomplete in VS Code via __dataclass_transform__, #2721 by @tiangolo
add missing type annotations in BaseConfig and handle max_length = 0, #2719 by @PrettyWood
Change orm_mode checking to allow recursive ORM mode parsing with dicts, #2718 by @nuno-andre
Add episode 313 of the Talk Python To Me podcast, where Michael Kennedy and Samuel Colvin discuss Pydantic, to the docs, #2712 by @RatulMaharaj
fix JSON schema generation when a field is of type NamedTuple and has a default value, #2707 by @PrettyWood
Enum fields now properly support extra kwargs in schema generation, #2697 by @sammchardy
Breaking Change, see #3780: Make serialization of referenced pydantic models possible, #2650 by @PrettyWood
Add uniqueItems option to ConstrainedList, #2618 by @nuno-andre
Try to evaluate forward refs automatically at model creation, #2588 by @uriyyo
Switch docs preview and coverage display to use smokeshow, #2580 by @samuelcolvin
Add __version__ attribute to pydantic module, #2572 by @paxcodes
Add postgresql+asyncpg, postgresql+pg8000, postgresql+psycopg2, postgresql+psycopg2cffi, postgresql+py-postgresql and postgresql+pygresql schemes for PostgresDsn, #2567 by @postgres-asyncpg
Enable the Hypothesis plugin to generate a constrained decimal when the decimal_places argument is specified, #2524 by @cwe5590
Allow collections.abc.Callable to be used as type in Python 3.9, #2519 by @daviskirk
Documentation update how to custom compile pydantic when using pip install, small change in setup.py to allow for custom CFLAGS when compiling, #2517 by @peterroelants
remove side effect of default_factory to run it only once even if Config.validate_all is set, #2515 by @PrettyWood
Add lookahead to ip regexes for AnyUrl hosts. This allows urls with DNS labels looking like IPs to validate as they are perfectly valid host names, #2512 by @sbv-csis
Set minItems and maxItems in generated JSON schema for fixed-length tuples, #2497 by @PrettyWood
Add strict argument to conbytes, #2489 by @koxudaxi
Support user defined generic field types in generic models, #2465 by @daviskirk
Add an example and a short explanation of subclassing GetterDict to docs, #2463 by @nuno-andre
add KafkaDsn type, HttpUrl now has default port 80 for http and 443 for https, #2447 by @MihanixA
Add PastDate and FutureDate types, #2425 by @Kludex
Support generating schema for Generic fields with subtypes, #2375 by @maximberg
fix(encoder): serialize NameEmail to str, #2341 by @alecgerona
add Config.smart_union to prevent coercion in Union if possible, see the doc for more information, #2092 by @PrettyWood
Add ability to use typing.Counter as a model field type, #2060 by @uriyyo
Add parameterised subclasses to __bases__ when constructing new parameterised classes, so that A <: B => A[int] <: B[int], #2007 by @diabolo-dan
Create FileUrl type that allows URLs that conform to RFC 8089. Add host_required parameter, which is True by default (AnyUrl and subclasses), False in RedisDsn, FileUrl, #1983 by @vgerak
add confrozenset(), analogous to conset() and conlist(), #1897 by @PrettyWood
stop calling parent class root_validator if overridden, #1895 by @PrettyWood
Add repr (defaults to True) parameter to Field, to hide it from the default representation of the BaseModel, #1831 by @fnep
Accept empty query/fragment URL parts, #1807 by @xavier

v1.8.2 (2021-05-11)

!!! warning A security vulnerability, level "moderate" is fixed in v1.8.2. Please upgrade ASAP. See security advisory CVE-2021-29510

Security fix: Fix date and datetime parsing so passing either 'infinity' or float('inf') (or their negative values) does not cause an infinite loop, see security advisory CVE-2021-29510
fix schema generation with Enum by generating a valid name, #2575 by @PrettyWood
fix JSON schema generation with a Literal of an enum member, #2536 by @PrettyWood
Fix bug with configurations declarations that are passed as keyword arguments during class creation, #2532 by @uriyyo
Allow passing json_encoders in class kwargs, #2521 by @layday
support arbitrary types with custom __eq__, #2483 by @PrettyWood
support Annotated in validate_arguments and in generic models with Python 3.9, #2483 by @PrettyWood

v1.8.1 (2021-03-03)

Bug fixes for regressions and new features from v1.8

allow elements of Config.field to update elements of a Field, #2461 by @samuelcolvin
fix validation with a BaseModel field and a custom root type, #2449 by @PrettyWood
expose Pattern encoder to fastapi, #2444 by @PrettyWood
enable the Hypothesis plugin to generate a constrained float when the multiple_of argument is specified, #2442 by @tobi-lipede-oodle
Avoid RecursionError when using some types like Enum or Literal with generic models, #2436 by @PrettyWood
do not overwrite declared __hash__ in subclasses of a model, #2422 by @PrettyWood
fix mypy complaints on Path and UUID related custom types, #2418 by @PrettyWood
Support properly variable length tuples of compound types, #2416 by @PrettyWood

v1.8 (2021-02-26)

Thank you to pydantic's sponsors: @jorgecarleitao, @BCarley, @chdsbd, @tiangolo, @matin, @linusg, @kevinalh, @koxudaxi, @timdrijvers, @mkeen, @meadsteve, @ginomempin, @primer-io, @and-semakin, @tomthorogood, @AjitZK, @westonsteimel, @Mazyod, @christippett, @CarlosDomingues, @Kludex, @r-m-n for their kind support.

Highlights

Hypothesis plugin for testing, #2097 by @Zac-HD
support for NamedTuple and TypedDict, #2216 by @PrettyWood
Support Annotated hints on model fields, #2147 by @JacobHayes
frozen parameter on Config to allow models to be hashed, #1880 by @rhuille

Changes

Breaking Change, remove old deprecation aliases from v1, #2415 by @samuelcolvin:
- remove notes on migrating to v1 in docs
- remove Schema which was replaced by Field
- remove Config.case_insensitive which was replaced by Config.case_sensitive (default False)
- remove Config.allow_population_by_alias which was replaced by Config.allow_population_by_field_name
- remove model.fields which was replaced by model.__fields__
- remove model.to_string() which was replaced by str(model)
- remove model.__values__ which was replaced by model.__dict__
Breaking Change: always validate only first sublevel items with each_item. There were indeed some edge cases with some compound types where the validated items were the last sublevel ones, #1933 by @PrettyWood
Update docs extensions to fix local syntax highlighting, #2400 by @daviskirk
fix: allow utils.lenient_issubclass to handle typing.GenericAlias objects like list[str] in Python >= 3.9, #2399 by @daviskirk
Improve field declaration for pydantic dataclass by allowing the usage of pydantic Field or 'metadata' kwarg of dataclasses.field, #2384 by @PrettyWood
Making typing-extensions a required dependency, #2368 by @samuelcolvin
Make resolve_annotations more lenient, allowing for missing modules, #2363 by @samuelcolvin
Allow configuring models through class kwargs, #2356 by @Bobronium
Prevent Mapping subclasses from always being coerced to dict, #2325 by @ofek
fix: allow None for type Optional[conset / conlist], #2320 by @PrettyWood
Support empty tuple type, #2318 by @PrettyWood
fix: python_requires metadata to require >=3.6.1, #2306 by @hukkinj1
Properly encode Decimal with, or without any decimal places, #2293 by @hultner
fix: update __fields_set__ in BaseModel.copy(update=…), #2290 by @PrettyWood
fix: keep order of fields with BaseModel.construct(), #2281 by @PrettyWood
Support generating schema for Generic fields, #2262 by @maximberg
Fix validate_decorator so **kwargs doesn't exclude values when the keyword has the same name as the *args or **kwargs names, #2251 by @cybojenix
Prevent overriding positional arguments with keyword arguments in validate_arguments, as per behaviour with native functions, #2249 by @cybojenix
add documentation for con* type functions, #2242 by @tayoogunbiyi
Support custom root type (aka __root__) when using parse_obj() with nested models, #2238 by @PrettyWood
Support custom root type (aka __root__) with from_orm(), #2237 by @PrettyWood
ensure cythonized functions are left untouched when creating models, based on #1944 by @kollmats, #2228 by @samuelcolvin
Resolve forward refs for stdlib dataclasses converted into pydantic ones, #2220 by @PrettyWood
Add support for NamedTuple and TypedDict types. Those two types are now handled and validated when used inside BaseModel or pydantic dataclass. Two utils are also added create_model_from_namedtuple and create_model_from_typeddict, #2216 by @PrettyWood
Do not ignore annotated fields when type is Union[Type[...], ...], #2213 by @PrettyWood
Raise a user-friendly TypeError when a root_validator does not return a dict (e.g. None), #2209 by @masalim2
Add a FrozenSet[str] type annotation to the allowed_schemes argument on the strict_url field type, #2198 by @Midnighter
add allow_mutation constraint to Field, #2195 by @sblack-usu
Allow Field with a default_factory to be used as an argument to a function decorated with validate_arguments, #2176 by @thomascobb
Allow non-existent secrets directory by only issuing a warning, #2175 by @davidolrik
fix URL regex to parse fragment without query string, #2168 by @andrewmwhite
fix: ensure to always return one of the values in Literal field type, #2166 by @PrettyWood
Support typing.Annotated hints on model fields. A Field may now be set in the type hint with Annotated[..., Field(...); all other annotations are ignored but still visible with get_type_hints(..., include_extras=True), #2147 by @JacobHayes
Added StrictBytes type as well as strict=False option to ConstrainedBytes, #2136 by @rlizzo
added Config.anystr_lower and to_lower kwarg to constr and conbytes, #2134 by @tayoogunbiyi
Support plain typing.Tuple type, #2132 by @PrettyWood
Add a bound method validate to functions decorated with validate_arguments to validate parameters without actually calling the function, #2127 by @PrettyWood
Add the ability to customize settings sources (add / disable / change priority order), #2107 by @kozlek
Fix mypy complaints about most custom pydantic types, #2098 by @PrettyWood
Add a Hypothesis plugin for easier property-based testing with Pydantic's custom types - usage details here, #2097 by @Zac-HD
add validator for None, NoneType or Literal[None], #2095 by @PrettyWood
Handle properly fields of type Callable with a default value, #2094 by @PrettyWood
Updated create_model return type annotation to return type which inherits from __base__ argument, #2071 by @uriyyo
Add merged json_encoders inheritance, #2064 by @art049
allow overwriting ClassVars in sub-models without having to re-annotate them, #2061 by @layday
add default encoder for Pattern type, #2045 by @PrettyWood
Add NonNegativeInt, NonPositiveInt, NonNegativeFloat, NonPositiveFloat, #1975 by @mdavis-xyz
Use % for percentage in string format of colors, #1960 by @EdwardBetts
Fixed issue causing KeyError to be raised when building schema from multiple BaseModel with the same names declared in separate classes, #1912 by @JSextonn
Add rediss (Redis over SSL) protocol to RedisDsn Allow URLs without user part (e.g., rediss://:pass@localhost), #1911 by @TrDex
Add a new frozen boolean parameter to Config (default: False). Setting frozen=True does everything that allow_mutation=False does, and also generates a __hash__() method for the model. This makes instances of the model potentially hashable if all the attributes are hashable, #1880 by @rhuille
fix schema generation with multiple Enums having the same name, #1857 by @PrettyWood
Added support for 13/19 digits VISA credit cards in PaymentCardNumber type, #1416 by @AlexanderSov
fix: prevent RecursionError while using recursive GenericModels, #1370 by @xppt
use enum for typing.Literal in JSON schema, #1350 by @PrettyWood
Fix: some recursive models did not require update_forward_refs and silently behaved incorrectly, #1201 by @PrettyWood
Fix bug where generic models with fields where the typevar is nested in another type a: List[T] are considered to be concrete. This allows these models to be subclassed and composed as expected, #947 by @daviskirk
Add Config.copy_on_model_validation flag. When set to False, pydantic will keep models used as fields untouched on validation instead of reconstructing (copying) them, #265 by @PrettyWood

v1.7.4 (2021-05-11)

Security fix: Fix date and datetime parsing so passing either 'infinity' or float('inf') (or their negative values) does not cause an infinite loop, See security advisory CVE-2021-29510

v1.7.3 (2020-11-30)

Thank you to pydantic's sponsors: @timdrijvers, @BCarley, @chdsbd, @tiangolo, @matin, @linusg, @kevinalh, @jorgecarleitao, @koxudaxi, @primer-api, @mkeen, @meadsteve for their kind support.

fix: set right default value for required (optional) fields, #2142 by @PrettyWood
fix: support underscore_attrs_are_private with generic models, #2138 by @PrettyWood
fix: update all modified field values in root_validator when validate_assignment is on, #2116 by @PrettyWood
Allow pickling of pydantic.dataclasses.dataclass dynamically created from a built-in dataclasses.dataclass, #2111 by @aimestereo
Fix a regression where Enum fields would not propagate keyword arguments to the schema, #2109 by @bm424
Ignore __doc__ as private attribute when Config.underscore_attrs_are_private is set, #2090 by @PrettyWood

v1.7.2 (2020-11-01)

fix slow GenericModel concrete model creation, allow GenericModel concrete name reusing in module, #2078 by @Bobronium
keep the order of the fields when validate_assignment is set, #2073 by @PrettyWood
forward all the params of the stdlib dataclass when converted into pydantic dataclass, #2065 by @PrettyWood

v1.7.1 (2020-10-28)

Thank you to pydantic's sponsors: @timdrijvers, @BCarley, @chdsbd, @tiangolo, @matin, @linusg, @kevinalh, @jorgecarleitao, @koxudaxi, @primer-api, @mkeen for their kind support.

fix annotation of validate_arguments when passing configuration as argument, #2055 by @layday
Fix mypy assignment error when using PrivateAttr, #2048 by @aphedges
fix underscore_attrs_are_private causing TypeError when overriding __init__, #2047 by @samuelcolvin
Fixed regression introduced in v1.7 involving exception handling in field validators when validate_assignment=True, #2044 by @johnsabath
fix: pydantic dataclass can inherit from stdlib dataclass and Config.arbitrary_types_allowed is supported, #2042 by @PrettyWood

v1.7 (2020-10-26)

Thank you to pydantic's sponsors: @timdrijvers, @BCarley, @chdsbd, @tiangolo, @matin, @linusg, @kevinalh, @jorgecarleitao, @koxudaxi, @primer-api for their kind support.

Highlights

Python 3.9 support, thanks @PrettyWood
Private model attributes, thanks @Bobronium
"secrets files" support in BaseSettings, thanks @mdgilene
convert stdlib dataclasses to pydantic dataclasses and use stdlib dataclasses in models, thanks @PrettyWood

Changes

Breaking Change: remove __field_defaults__, add default_factory support with BaseModel.construct. Use .get_default() method on fields in __fields__ attribute instead, #1732 by @PrettyWood
Rearrange CI to run linting as a separate job, split install recipes for different tasks, #2020 by @samuelcolvin
Allows subclasses of generic models to make some, or all, of the superclass's type parameters concrete, while also defining new type parameters in the subclass, #2005 by @choogeboom
Call validator with the correct values parameter type in BaseModel.__setattr__, when validate_assignment = True in model config, #1999 by @me-ransh
Force fields.Undefined to be a singleton object, fixing inherited generic model schemas, #1981 by @daviskirk
Include tests in source distributions, #1976 by @sbraz
Add ability to use min_length/max_length constraints with secret types, #1974 by @uriyyo
Also check root_validators when validate_assignment is on, #1971 by @PrettyWood
Fix const validators not running when custom validators are present, #1957 by @hmvp
add deque to field types, #1935 by @wozniakty
add basic support for Python 3.9, #1832 by @PrettyWood
Fix typo in the anchor of exporting_models.md#modelcopy and incorrect description, #1821 by @KimMachineGun
Added ability for BaseSettings to read "secret files", #1820 by @mdgilene
add parse_raw_as utility function, #1812 by @PrettyWood
Support home directory relative paths for dotenv files (e.g. ~/.env), #1803 by @PrettyWood
Clarify documentation for parse_file to show that the argument should be a file path not a file-like object, #1794 by @mdavis-xyz
Fix false positive from mypy plugin when a class nested within a BaseModel is named Model, #1770 by @selimb
add basic support of Pattern type in schema generation, #1767 by @PrettyWood
Support custom title, description and default in schema of enums, #1748 by @PrettyWood
Properly represent Literal Enums when use_enum_values is True, #1747 by @noelevans
Allows timezone information to be added to strings to be formatted as time objects. Permitted formats are Z for UTC or an offset for absolute positive or negative time shifts. Or the timezone data can be omitted, #1744 by @noelevans
Add stub __init__ with Python 3.6 signature for ForwardRef, #1738 by @sirtelemak
Fix behaviour with forward refs and optional fields in nested models, #1736 by @PrettyWood
add Enum and IntEnum as valid types for fields, #1735 by @PrettyWood
Change default value of __module__ argument of create_model from None to 'pydantic.main'. Set reference of created concrete model to it's module to allow pickling (not applied to models created in functions), #1686 by @Bobronium
Add private attributes support, #1679 by @Bobronium
add config to @validate_arguments, #1663 by @samuelcolvin
Allow descendant Settings models to override env variable names for the fields defined in parent Settings models with env in their Config. Previously only env_prefix configuration option was applicable, #1561 by @ojomio
Support ref_template when creating schema $refs, #1479 by @kilo59
Add a __call__ stub to PyObject so that mypy will know that it is callable, #1352 by @brianmaissy
pydantic.dataclasses.dataclass decorator now supports built-in dataclasses.dataclass. It is hence possible to convert an existing dataclass easily to add Pydantic validation. Moreover nested dataclasses are also supported, #744 by @PrettyWood

v1.6.2 (2021-05-11)

Security fix: Fix date and datetime parsing so passing either 'infinity' or float('inf') (or their negative values) does not cause an infinite loop, See security advisory CVE-2021-29510

v1.6.1 (2020-07-15)

fix validation and parsing of nested models with default_factory, #1710 by @PrettyWood

v1.6 (2020-07-11)

Thank you to pydantic's sponsors: @matin, @tiangolo, @chdsbd, @jorgecarleitao, and 1 anonymous sponsor for their kind support.

Modify validators for conlist and conset to not have always=True, #1682 by @samuelcolvin
add port check to AnyUrl (can't exceed 65536) ports are 16 insigned bits: 0 <= port <= 2**16-1 src: rfc793 header format, #1654 by @flapili
Document default regex anchoring semantics, #1648 by @yurikhan
Use chain.from_iterable in class_validators.py. This is a faster and more idiomatic way of using itertools.chain. Instead of computing all the items in the iterable and storing them in memory, they are computed one-by-one and never stored as a huge list. This can save on both runtime and memory space, #1642 by @cool-RR
Add conset(), analogous to conlist(), #1623 by @patrickkwang
make Pydantic errors (un)pickable, #1616 by @PrettyWood
Allow custom encoding for dotenv files, #1615 by @PrettyWood
Ensure SchemaExtraCallable is always defined to get type hints on BaseConfig, #1614 by @PrettyWood
Update datetime parser to support negative timestamps, #1600 by @mlbiche
Update mypy, remove AnyType alias for Type[Any], #1598 by @samuelcolvin
Adjust handling of root validators so that errors are aggregated from all failing root validators, instead of reporting on only the first root validator to fail, #1586 by @beezee
Make __modify_schema__ on Enums apply to the enum schema rather than fields that use the enum, #1581 by @therefromhere
Fix behavior of __all__ key when used in conjunction with index keys in advanced include/exclude of fields that are sequences, #1579 by @xspirus
Subclass validators do not run when referencing a List field defined in a parent class when each_item=True. Added an example to the docs illustrating this, #1566 by @samueldeklund
change schema.field_class_to_schema to support frozenset in schema, #1557 by @wangpeibao
Call __modify_schema__ only for the field schema, #1552 by @PrettyWood
Move the assignment of field.validate_always in fields.py so the always parameter of validators work on inheritance, #1545 by @dcHHH
Added support for UUID instantiation through 16 byte strings such as b'\x12\x34\x56\x78' * 4. This was done to support BINARY(16) columns in sqlalchemy, #1541 by @shawnwall
Add a test assertion that default_factory can return a singleton, #1523 by @therefromhere
Add NameEmail.__eq__ so duplicate NameEmail instances are evaluated as equal, #1514 by @stephen-bunn
Add datamodel-code-generator link in pydantic document site, #1500 by @koxudaxi
Added a "Discussion of Pydantic" section to the documentation, with a link to "Pydantic Introduction" video by Alexander Hultnér, #1499 by @hultner
Avoid some side effects of default_factory by calling it only once if possible and by not setting a default value in the schema, #1491 by @PrettyWood
Added docs about dumping dataclasses to JSON, #1487 by @mikegrima
Make BaseModel.__signature__ class-only, so getting __signature__ from model instance will raise AttributeError, #1466 by @Bobronium
include 'format': 'password' in the schema for secret types, #1424 by @atheuz
Modify schema constraints on ConstrainedFloat so that exclusiveMinimum and minimum are not included in the schema if they are equal to -math.inf and exclusiveMaximum and maximum are not included if they are equal to math.inf, #1417 by @vdwees
Squash internal __root__ dicts in .dict() (and, by extension, in .json()), #1414 by @patrickkwang
Move const validator to post-validators so it validates the parsed value, #1410 by @selimb
Fix model validation to handle nested literals, e.g. Literal['foo', Literal['bar']], #1364 by @DBCerigo
Remove user_required = True from RedisDsn, neither user nor password are required, #1275 by @samuelcolvin
Remove extra allOf from schema for fields with Union and custom Field, #1209 by @mostaphaRoudsari
Updates OpenAPI schema generation to output all enums as separate models. Instead of inlining the enum values in the model schema, models now use a $ref property to point to the enum definition, #1173 by @calvinwyoung

v1.5.1 (2020-04-23)

Signature generation with extra: allow never uses a field name, #1418 by @prettywood
Avoid mutating Field default value, #1412 by @prettywood

v1.5 (2020-04-18)

Make includes/excludes arguments for .dict(), ._iter(), ..., immutable, #1404 by @AlexECX
Always use a field's real name with includes/excludes in model._iter(), regardless of by_alias, #1397 by @AlexECX
Update constr regex example to include start and end lines, #1396 by @lmcnearney
Confirm that shallow model.copy() does make a shallow copy of attributes, #1383 by @samuelcolvin
Renaming model_name argument of main.create_model() to __model_name to allow using model_name as a field name, #1367 by @kittipatv
Replace raising of exception to silent passing for non-Var attributes in mypy plugin, #1345 by @b0g3r
Remove typing_extensions dependency for Python 3.8, #1342 by @prettywood
Make SecretStr and SecretBytes initialization idempotent, #1330 by @atheuz
document making secret types dumpable using the json method, #1328 by @atheuz
Move all testing and build to github actions, add windows and macos binaries, thank you @StephenBrown2 for much help, #1326 by @samuelcolvin
fix card number length check in PaymentCardNumber, PaymentCardBrand now inherits from str, #1317 by @samuelcolvin
Have BaseModel inherit from Representation to make mypy happy when overriding __str__, #1310 by @FuegoFro
Allow None as input to all optional list fields, #1307 by @prettywood
Add datetime field to default_factory example, #1301 by @StephenBrown2
Allow subclasses of known types to be encoded with superclass encoder, #1291 by @StephenBrown2
Exclude exported fields from all elements of a list/tuple of submodels/dicts with '__all__', #1286 by @masalim2
Add pydantic.color.Color objects as available input for Color fields, #1258 by @leosussan
In examples, type nullable fields as Optional, so that these are valid mypy annotations, #1248 by @kokes
Make pattern_validator() accept pre-compiled Pattern objects. Fix str_validator() return type to str, #1237 by @adamgreg
Document how to manage Generics and inheritance, #1229 by @esadruhn
update_forward_refs() method of BaseModel now copies __dict__ of class module instead of modyfying it, #1228 by @paul-ilyin
Support instance methods and class methods with @validate_arguments, #1222 by @samuelcolvin
Add default_factory argument to Field to create a dynamic default value by passing a zero-argument callable, #1210 by @prettywood
add support for NewType of List, Optional, etc, #1207 by @Kazy
fix mypy signature for root_validator, #1192 by @samuelcolvin
Fixed parsing of nested 'custom root type' models, #1190 by @Shados
Add validate_arguments function decorator which checks the arguments to a function matches type annotations, #1179 by @samuelcolvin
Add __signature__ to models, #1034 by @Bobronium
Refactor ._iter() method, 10x speed boost for dict(model), #1017 by @Bobronium

v1.4 (2020-01-24)

Breaking Change: alias precedence logic changed so aliases on a field always take priority over an alias from alias_generator to avoid buggy/unexpected behaviour, see here for details, #1178 by @samuelcolvin
Add support for unicode and punycode in TLDs, #1182 by @jamescurtin
Fix cls argument in validators during assignment, #1172 by @samuelcolvin
completing Luhn algorithm for PaymentCardNumber, #1166 by @cuencandres
add support for generics that implement __get_validators__ like a custom data type, #1159 by @tiangolo
add support for infinite generators with Iterable, #1152 by @tiangolo
fix url_regex to accept schemas with +, - and . after the first character, #1142 by @samuelcolvin
move version_info() to version.py, suggest its use in issues, #1138 by @samuelcolvin
Improve pydantic import time by roughly 50% by deferring some module loading and regex compilation, #1127 by @samuelcolvin
Fix EmailStr and NameEmail to accept instances of themselves in cython, #1126 by @koxudaxi
Pass model class to the Config.schema_extra callable, #1125 by @therefromhere
Fix regex for username and password in URLs, #1115 by @samuelcolvin
Add support for nested generic models, #1104 by @dmontagu
add __all__ to __init__.py to prevent "implicit reexport" errors from mypy, #1072 by @samuelcolvin
Add support for using "dotenv" files with BaseSettings, #1011 by @acnebs

v1.3 (2019-12-21)

Change schema and schema_model to handle dataclasses by using their __pydantic_model__ feature, #792 by @aviramha
Added option for root_validator to be skipped if values validation fails using keyword skip_on_failure=True, #1049 by @aviramha
Allow Config.schema_extra to be a callable so that the generated schema can be post-processed, #1054 by @selimb
Update mypy to version 0.750, #1057 by @dmontagu
Trick Cython into allowing str subclassing, #1061 by @skewty
Prevent type attributes being added to schema unless the attribute __schema_attributes__ is True, #1064 by @samuelcolvin
Change BaseModel.parse_file to use Config.json_loads, #1067 by @kierandarcy
Fix for optional Json fields, #1073 by @volker48
Change the default number of threads used when compiling with cython to one, allow override via the CYTHON_NTHREADS environment variable, #1074 by @samuelcolvin
Run FastAPI tests during Pydantic's CI tests, #1075 by @tiangolo
My mypy strictness constraints, and associated tweaks to type annotations, #1077 by @samuelcolvin
Add __eq__ to SecretStr and SecretBytes to allow "value equals", #1079 by @sbv-trueenergy
Fix schema generation for nested None case, #1088 by @lutostag
Consistent checks for sequence like objects, #1090 by @samuelcolvin
Fix Config inheritance on BaseSettings when used with env_prefix, #1091 by @samuelcolvin
Fix for __modify_schema__ when it conflicted with field_class_to_schema*, #1102 by @samuelcolvin
docs: Fix explanation of case sensitive environment variable names when populating BaseSettings subclass attributes, #1105 by @tribals
Rename django-rest-framework benchmark in documentation, #1119 by @frankie567

v1.2 (2019-11-28)

Possible Breaking Change: Add support for required Optional with name: Optional[AnyType] = Field(...) and refactor ModelField creation to preserve required parameter value, #1031 by @tiangolo; see here for details
Add benchmarks for cattrs, #513 by @sebastianmika
Add exclude_none option to dict() and friends, #587 by @niknetniko
Add benchmarks for valideer, #670 by @gsakkis
Add parse_obj_as and parse_file_as functions for ad-hoc parsing of data into arbitrary pydantic-compatible types, #934 by @dmontagu
Add allow_reuse argument to validators, thus allowing validator reuse, #940 by @dmontagu
Add support for mapping types for custom root models, #958 by @dmontagu
Mypy plugin support for dataclasses, #966 by @koxudaxi
Add support for dataclasses default factory, #968 by @ahirner
Add a ByteSize type for converting byte string (1GB) to plain bytes, #977 by @dgasmith
Fix mypy complaint about @root_validator(pre=True), #984 by @samuelcolvin
Add manylinux binaries for Python 3.8 to pypi, also support manylinux2010, #994 by @samuelcolvin
Adds ByteSize conversion to another unit, #995 by @dgasmith
Fix __str__ and __repr__ inheritance for models, #1022 by @samuelcolvin
add testimonials section to docs, #1025 by @sullivancolin
Add support for typing.Literal for Python 3.8, #1026 by @dmontagu

v1.1.1 (2019-11-20)

Fix bug where use of complex fields on sub-models could cause fields to be incorrectly configured, #1015 by @samuelcolvin

v1.1 (2019-11-07)

Add a mypy plugin for type checking BaseModel.__init__ and more, #722 by @dmontagu
Change return type typehint for GenericModel.__class_getitem__ to prevent PyCharm warnings, #936 by @dmontagu
Fix usage of Any to allow None, also support TypeVar thus allowing use of un-parameterised collection types e.g. Dict and List, #962 by @samuelcolvin
Set FieldInfo on subfields to fix schema generation for complex nested types, #965 by @samuelcolvin

v1.0 (2019-10-23)

Breaking Change: deprecate the Model.fields property, use Model.__fields__ instead, #883 by @samuelcolvin
Breaking Change: Change the precedence of aliases so child model aliases override parent aliases, including using alias_generator, #904 by @samuelcolvin
Breaking change: Rename skip_defaults to exclude_unset, and add ability to exclude actual defaults, #915 by @dmontagu
Add **kwargs to pydantic.main.ModelMetaclass.__new__ so __init_subclass__ can take custom parameters on extended BaseModel classes, #867 by @retnikt
Fix field of a type that has a default value, #880 by @koxudaxi
Use FutureWarning instead of DeprecationWarning when alias instead of env is used for settings models, #881 by @samuelcolvin
Fix issue with BaseSettings inheritance and alias getting set to None, #882 by @samuelcolvin
Modify __repr__ and __str__ methods to be consistent across all public classes, add __pretty__ to support python-devtools, #884 by @samuelcolvin
deprecation warning for case_insensitive on BaseSettings config, #885 by @samuelcolvin
For BaseSettings merge environment variables and in-code values recursively, as long as they create a valid object when merged together, to allow splitting init arguments, #888 by @idmitrievsky
change secret types example, #890 by @ashears
Change the signature of Model.construct() to be more user-friendly, document construct() usage, #898 by @samuelcolvin
Add example for the construct() method, #907 by @ashears
Improve use of Field constraints on complex types, raise an error if constraints are not enforceable, also support tuples with an ellipsis Tuple[X, ...], Sequence and FrozenSet in schema, #909 by @samuelcolvin
update docs for bool missing valid value, #911 by @trim21
Better str/repr logic for ModelField, #912 by @samuelcolvin
Fix ConstrainedList, update schema generation to reflect min_items and max_items Field() arguments, #917 by @samuelcolvin
Allow abstracts sets (eg. dict keys) in the include and exclude arguments of dict(), #921 by @samuelcolvin
Fix JSON serialization errors on ValidationError.json() by using pydantic_encoder, #922 by @samuelcolvin
Clarify usage of remove_untouched, improve error message for types with no validators, #926 by @retnikt

v1.0b2 (2019-10-07)

Mark StrictBool typecheck as bool to allow for default values without mypy errors, #690 by @dmontagu
Transfer the documentation build from sphinx to mkdocs, re-write much of the documentation, #856 by @samuelcolvin
Add support for custom naming schemes for GenericModel subclasses, #859 by @dmontagu
Add if TYPE_CHECKING: to the excluded lines for test coverage, #874 by @dmontagu
Rename allow_population_by_alias to allow_population_by_field_name, remove unnecessary warning about it, #875 by @samuelcolvin

v1.0b1 (2019-10-01)

Breaking Change: rename Schema to Field, make it a function to placate mypy, #577 by @samuelcolvin
Breaking Change: modify parsing behavior for bool, #617 by @dmontagu
Breaking Change: get_validators is no longer recognised, use __get_validators__. Config.ignore_extra and Config.allow_extra are no longer recognised, use Config.extra, #720 by @samuelcolvin
Breaking Change: modify default config settings for BaseSettings; case_insensitive renamed to case_sensitive, default changed to case_sensitive = False, env_prefix default changed to '' - e.g. no prefix, #721 by @dmontagu
Breaking change: Implement root_validator and rename root errors from __obj__ to __root__, #729 by @samuelcolvin
Breaking Change: alter the behaviour of dict(model) so that sub-models are nolonger converted to dictionaries, #733 by @samuelcolvin
Breaking change: Added initvars support to post_init_post_parse, #748 by @Raphael-C-Almeida
Breaking Change: Make BaseModel.json() only serialize the __root__ key for models with custom root, #752 by @dmontagu
Breaking Change: complete rewrite of URL parsing logic, #755 by @samuelcolvin
Breaking Change: preserve superclass annotations for field-determination when not provided in subclass, #757 by @dmontagu
Breaking Change: BaseSettings now uses the special env settings to define which environment variables to read, not aliases, #847 by @samuelcolvin
add support for assert statements inside validators, #653 by @abdusco
Update documentation to specify the use of pydantic.dataclasses.dataclass and subclassing pydantic.BaseModel, #710 by @maddosaurus
Allow custom JSON decoding and encoding via json_loads and json_dumps Config properties, #714 by @samuelcolvin
make all annotated fields occur in the order declared, #715 by @dmontagu
use pytest to test mypy integration, #735 by @dmontagu
add __repr__ method to ErrorWrapper, #738 by @samuelcolvin
Added support for FrozenSet members in dataclasses, and a better error when attempting to use types from the typing module that are not supported by Pydantic, #745 by @djpetti
add documentation for Pycharm Plugin, #750 by @koxudaxi
fix broken examples in the docs, #753 by @dmontagu
moving typing related objects into pydantic.typing, #761 by @samuelcolvin
Minor performance improvements to ErrorWrapper, ValidationError and datetime parsing, #763 by @samuelcolvin
Improvements to datetime/date/time/timedelta types: more descriptive errors, change errors to value_error not type_error, support bytes, #766 by @samuelcolvin
fix error messages for Literal types with multiple allowed values, #770 by @dmontagu
Improved auto-generated title field in JSON schema by converting underscore to space, #772 by @skewty
support mypy --no-implicit-reexport for dataclasses, also respect --no-implicit-reexport in pydantic itself, #783 by @samuelcolvin
add the PaymentCardNumber type, #790 by @matin
Fix const validations for lists, #794 by @hmvp
Set additionalProperties to false in schema for models with extra fields disallowed, #796 by @Code0x58
EmailStr validation method now returns local part case-sensitive per RFC 5321, #798 by @henriklindgren
Added ability to validate strictness to ConstrainedFloat, ConstrainedInt and ConstrainedStr and added StrictFloat and StrictInt classes, #799 by @DerRidda
Improve handling of None and Optional, replace whole with each_item (inverse meaning, default False) on validators, #803 by @samuelcolvin
add support for Type[T] type hints, #807 by @timonbimon
Performance improvements from removing change_exceptions, change how pydantic error are constructed, #819 by @samuelcolvin
Fix the error message arising when a BaseModel-type model field causes a ValidationError during parsing, #820 by @dmontagu
allow getter_dict on Config, modify GetterDict to be more like a Mapping object and thus easier to work with, #821 by @samuelcolvin
Only check TypeVar param on base GenericModel class, #842 by @zpencerq
rename Model._schema_cache -> Model.__schema_cache__, Model._json_encoder -> Model.__json_encoder__, Model._custom_root_type -> Model.__custom_root_type__, #851 by @samuelcolvin

v0.32.2 (2019-08-17)

(Docs are available here)

fix __post_init__ usage with dataclass inheritance, fix #739 by @samuelcolvin
fix required fields validation on GenericModels classes, #742 by @amitbl
fix defining custom Schema on GenericModel fields, #754 by @amitbl

v0.32.1 (2019-08-08)

do not validate extra fields when validate_assignment is on, #724 by @YaraslauZhylko

v0.32 (2019-08-06)

add model name to ValidationError error message, #676 by @dmontagu
breaking change: remove __getattr__ and rename __values__ to __dict__ on BaseModel, deprecation warning on use __values__ attr, attributes access speed increased up to 14 times, #712 by @Bobronium
support ForwardRef (without self-referencing annotations) in Python 3.6, #706 by @koxudaxi
implement schema_extra in Config sub-class, #663 by @tiangolo

v0.31.1 (2019-07-31)

fix json generation for EnumError, #697 by @dmontagu
update numerous dependencies

v0.31 (2019-07-24)

better support for floating point multiple_of values, #652 by @justindujardin
fix schema generation for NewType and Literal, #649 by @dmontagu
fix alias_generator and field config conflict, #645 by @gmetzker and #658 by @Bobronium
more detailed message for EnumError, #673 by @dmontagu
add advanced exclude support for dict, json and copy, #648 by @Bobronium
fix bug in GenericModel for models with concrete parameterized fields, #672 by @dmontagu
add documentation for Literal type, #651 by @dmontagu
add Config.keep_untouched for custom descriptors support, #679 by @Bobronium
use inspect.cleandoc internally to get model description, #657 by @tiangolo
add Color to schema generation, by @euri10
add documentation for Literal type, #651 by @dmontagu

v0.30.1 (2019-07-15)

fix so nested classes which inherit and change __init__ are correctly processed while still allowing self as a parameter, #644 by @lnaden and @dgasmith

v0.30 (2019-07-07)

enforce single quotes in code, #612 by @samuelcolvin
fix infinite recursion with dataclass inheritance and __post_init__, #606 by @Hanaasagi
fix default values for GenericModel, #610 by @dmontagu
clarify that self-referencing models require Python 3.7+, #616 by @vlcinsky
fix truncate for types, #611 by @dmontagu
add alias_generator support, #622 by @Bobronium
fix unparameterized generic type schema generation, #625 by @dmontagu
fix schema generation with multiple/circular references to the same model, #621 by @tiangolo and @wongpat
support custom root types, #628 by @koxudaxi
support self as a field name in parse_obj, #632 by @samuelcolvin

v0.29 (2019-06-19)

support dataclasses.InitVar, #592 by @pfrederiks
Updated documentation to elucidate the usage of Union when defining multiple types under an attribute's annotation and showcase how the type-order can affect marshalling of provided values, #594 by @somada141
add conlist type, #583 by @hmvp
add support for generics, #595 by @dmontagu

v0.28 (2019-06-06)

fix support for JSON Schema generation when using models with circular references in Python 3.7, #572 by @tiangolo
support __post_init_post_parse__ on dataclasses, #567 by @sevaho
allow dumping dataclasses to JSON, #575 by @samuelcolvin and @DanielOberg
ORM mode, #562 by @samuelcolvin
fix pydantic.compiled on ipython, #573 by @dmontagu and @samuelcolvin
add StrictBool type, #579 by @cazgp

v0.27 (2019-05-30)

breaking change _pydantic_post_init to execute dataclass' original __post_init__ before validation, #560 by @HeavenVolkoff
fix handling of generic types without specified parameters, #550 by @dmontagu
breaking change (maybe): this is the first release compiled with cython, see the docs and please submit an issue if you run into problems

v0.27.0a1 (2019-05-26)

fix JSON Schema for list, tuple, and set, #540 by @tiangolo
compiling with cython, manylinux binaries, some other performance improvements, #548 by @samuelcolvin

v0.26 (2019-05-22)

fix to schema generation for IPvAnyAddress, IPvAnyInterface, IPvAnyNetwork #498 by @pilosus
fix variable length tuples support, #495 by @pilosus
fix return type hint for create_model, #526 by @dmontagu
Breaking Change: fix .dict(skip_keys=True) skipping values set via alias (this involves changing validate_model() to always returns Tuple[Dict[str, Any], Set[str], Optional[ValidationError]]), #517 by @sommd
fix to schema generation for IPv4Address, IPv6Address, IPv4Interface, IPv6Interface, IPv4Network, IPv6Network #532 by @euri10
add Color type, #504 by @pilosus and @samuelcolvin

v0.25 (2019-05-05)

Improve documentation on self-referencing models and annotations, #487 by @theenglishway
fix .dict() with extra keys, #490 by @JaewonKim
support const keyword in Schema, #434 by @Sean1708

v0.24 (2019-04-23)

fix handling ForwardRef in sub-types, like Union, #464 by @tiangolo
fix secret serialization, #465 by @atheuz
Support custom validators for dataclasses, #454 by @primal100
fix parse_obj to cope with dict-like objects, #472 by @samuelcolvin
fix to schema generation in nested dataclass-based models, #474 by @NoAnyLove
fix json for Path, FilePath, and DirectoryPath objects, #473 by @mikegoodspeed

v0.23 (2019-04-04)

improve documentation for contributing section, #441 by @pilosus
improve README.rst to include essential information about the package, #446 by @pilosus
IntEnum support, #444 by @potykion
fix PyObject callable value, #409 by @pilosus
fix black deprecation warnings after update, #451 by @pilosus
fix ForwardRef collection bug, #450 by @tigerwings
Support specialized ClassVars, #455 by @tyrylu
fix JSON serialization for ipaddress types, #333 by @pilosus
add SecretStr and SecretBytes types, #452 by @atheuz

v0.22 (2019-03-29)

add IPv{4,6,Any}Network and IPv{4,6,Any}Interface types from ipaddress stdlib, #333 by @pilosus
add docs for datetime types, #386 by @pilosus
fix to schema generation in dataclass-based models, #408 by @pilosus
fix path in nested models, #437 by @kataev
add Sequence support, #304 by @pilosus

v0.21.0 (2019-03-15)

fix typo in NoneIsNotAllowedError message, #414 by @YaraslauZhylko
add IPvAnyAddress, IPv4Address and IPv6Address types, #333 by @pilosus

v0.20.1 (2019-02-26)

fix type hints of parse_obj and similar methods, #405 by @erosennin
fix submodel validation, #403 by @samuelcolvin
correct type hints for ValidationError.json, #406 by @layday

v0.20.0 (2019-02-18)

fix tests for Python 3.8, #396 by @samuelcolvin
Adds fields to the dir method for autocompletion in interactive sessions, #398 by @dgasmith
support ForwardRef (and therefore from __future__ import annotations) with dataclasses, #397 by @samuelcolvin

v0.20.0a1 (2019-02-13)

breaking change (maybe): more sophisticated argument parsing for validators, any subset of values, config and field is now permitted, eg. (cls, value, field), however the variadic key word argument ("**kwargs") must be called kwargs, #388 by @samuelcolvin
breaking change: Adds skip_defaults argument to BaseModel.dict() to allow skipping of fields that were not explicitly set, signature of Model.construct() changed, #389 by @dgasmith
add py.typed marker file for PEP-561 support, #391 by @je-l
Fix extra behaviour for multiple inheritance/mix-ins, #394 by @YaraslauZhylko

v0.19.0 (2019-02-04)

Support Callable type hint, fix #279 by @proofit404
Fix schema for fields with validator decorator, fix #375 by @tiangolo
Add multiple_of constraint to ConstrainedDecimal, ConstrainedFloat, ConstrainedInt and their related types condecimal, confloat, and conint #371, thanks @StephenBrown2
Deprecated ignore_extra and allow_extra Config fields in favor of extra, #352 by @liiight
Add type annotations to all functions, test fully with mypy, #373 by @samuelcolvin
fix for 'missing' error with validate_all or validate_always, #381 by @samuelcolvin
Change the second/millisecond watershed for date/datetime parsing to 2e10, #385 by @samuelcolvin

v0.18.2 (2019-01-22)

Fix to schema generation with Optional fields, fix #361 by @samuelcolvin

v0.18.1 (2019-01-17)

add ConstrainedBytes and conbytes types, #315 @Gr1N
adding MANIFEST.in to include license in package .tar.gz, #358 by @samuelcolvin

v0.18.0 (2019-01-13)

breaking change: don't call validators on keys of dictionaries, #254 by @samuelcolvin
Fix validators with always=True when the default is None or the type is optional, also prevent whole validators being called for sub-fields, fix #132 by @samuelcolvin
improve documentation for settings priority and allow it to be easily changed, #343 by @samuelcolvin
fix ignore_extra=False and allow_population_by_alias=True, fix #257 by @samuelcolvin
breaking change: Set BaseConfig attributes min_anystr_length and max_anystr_length to None by default, fix #349 in #350 by @tiangolo
add support for postponed annotations, #348 by @samuelcolvin

v0.17.0 (2018-12-27)

fix schema for timedelta as number, #325 by @tiangolo
prevent validators being called repeatedly after inheritance, #327 by @samuelcolvin
prevent duplicate validator check in ipython, fix #312 by @samuelcolvin
add "Using Pydantic" section to docs, #323 by @tiangolo & #326 by @samuelcolvin
fix schema generation for fields annotated as : dict, : list, : tuple and : set, #330 & #335 by @nkonin
add support for constrained strings as dict keys in schema, #332 by @tiangolo
support for passing Config class in dataclasses decorator, #276 by @jarekkar (breaking change: this supersedes the validate_assignment argument with config)
support for nested dataclasses, #334 by @samuelcolvin
better errors when getting an ImportError with PyObject, #309 by @samuelcolvin
rename get_validators to __get_validators__, deprecation warning on use of old name, #338 by @samuelcolvin
support ClassVar by excluding such attributes from fields, #184 by @samuelcolvin

v0.16.1 (2018-12-10)

fix create_model to correctly use the passed __config__, #320 by @hugoduncan

v0.16.0 (2018-12-03)

breaking change: refactor schema generation to be compatible with JSON Schema and OpenAPI specs, #308 by @tiangolo
add schema to schema module to generate top-level schemas from base models, #308 by @tiangolo
add additional fields to Schema class to declare validation for str and numeric values, #311 by @tiangolo
rename _schema to schema on fields, #318 by @samuelcolvin
add case_insensitive option to BaseSettings Config, #277 by @jasonkuhrt

v0.15.0 (2018-11-18)

move codebase to use black, #287 by @samuelcolvin
fix alias use in settings, #286 by @jasonkuhrt and @samuelcolvin
fix datetime parsing in parse_date, #298 by @samuelcolvin
allow dataclass inheritance, fix #293 by @samuelcolvin
fix PyObject = None, fix #305 by @samuelcolvin
allow Pattern type, fix #303 by @samuelcolvin

v0.14.0 (2018-10-02)

dataclasses decorator, #269 by @Gaunt and @samuelcolvin

v0.13.1 (2018-09-21)

fix issue where int_validator doesn't cast a bool to an int #264 by @nphyatt
add deep copy support for BaseModel.copy() #249, @gangefors

v0.13.0 (2018-08-25)

raise an exception if a field's name shadows an existing BaseModel attribute #242
add UrlStr and urlstr types #236
timedelta json encoding ISO8601 and total seconds, custom json encoders #247, by @cfkanesan and @samuelcolvin
allow timedelta objects as values for properties of type timedelta (matches datetime etc. behavior) #247

v0.12.1 (2018-07-31)

fix schema generation for fields defined using typing.Any #237

v0.12.0 (2018-07-31)

add by_alias argument in .dict() and .json() model methods #205
add Json type support #214
support tuples #227
major improvements and changes to schema #213

v0.11.2 (2018-07-05)

add NewType support #115
fix list, set & tuple validation #225
separate out validate_model method, allow errors to be returned along with valid values #221

v0.11.1 (2018-07-02)

support Python 3.7 #216, thanks @layday
Allow arbitrary types in model #209, thanks @oldPadavan

v0.11.0 (2018-06-28)

make list, tuple and set types stricter #86
breaking change: remove msgpack parsing #201
add FilePath and DirectoryPath types #10
model schema generation #190
JSON serialization of models and schemas #133

v0.10.0 (2018-06-11)

add Config.allow_population_by_alias #160, thanks @bendemaree
breaking change: new errors format #179, thanks @Gr1N
breaking change: removed Config.min_number_size and Config.max_number_size #183, thanks @Gr1N
breaking change: correct behaviour of lt and gt arguments to conint etc. #188 for the old behaviour use le and ge #194, thanks @jaheba
added error context and ability to redefine error message templates using Config.error_msg_templates #183, thanks @Gr1N
fix typo in validator exception #150
copy defaults to model values, so different models don't share objects #154

v0.9.1 (2018-05-10)

allow custom get_field_config on config classes #159
add UUID1, UUID3, UUID4 and UUID5 types #167, thanks @Gr1N
modify some inconsistent docstrings and annotations #173, thanks @YannLuo
fix type annotations for exotic types #171, thanks @Gr1N
re-use type validators in exotic types #171
scheduled monthly requirements updates #168
add Decimal, ConstrainedDecimal and condecimal types #170, thanks @Gr1N

v0.9.0 (2018-04-28)

tweak email-validator import error message #145
fix parse error of parse_date() and parse_datetime() when input is 0 #144, thanks @YannLuo
add Config.anystr_strip_whitespace and strip_whitespace kwarg to constr, by default values is False #163, thanks @Gr1N
add ConstrainedFloat, confloat, PositiveFloat and NegativeFloat types #166, thanks @Gr1N

v0.8.0 (2018-03-25)

fix type annotation for inherit_config #139
breaking change: check for invalid field names in validators #140
validate attributes of parent models #141
breaking change: email validation now uses email-validator #142

v0.7.1 (2018-02-07)

fix bug with create_model modifying the base class

v0.7.0 (2018-02-06)

added compatibility with abstract base classes (ABCs) #123
add create_model method #113 #125
breaking change: rename .config to .__config__ on a model
breaking change: remove deprecated .values() on a model, use .dict() instead
remove use of OrderedDict and use simple dict #126
add Config.use_enum_values #127
add wildcard validators of the form @validate('*') #128

v0.6.4 (2018-02-01)

allow Python date and times objects #122

v0.6.3 (2017-11-26)

fix direct install without README.rst present

v0.6.2 (2017-11-13)

errors for invalid validator use
safer check for complex models in Settings

v0.6.1 (2017-11-08)

prevent duplicate validators, #101
add always kwarg to validators, #102

v0.6.0 (2017-11-07)

assignment validation #94, thanks petroswork!
JSON in environment variables for complex types, #96
add validator decorators for complex validation, #97
depreciate values(...) and replace with .dict(...), #99

v0.5.0 (2017-10-23)

add UUID validation #89
remove index and track from error object (json) if they're null #90
improve the error text when a list is provided rather than a dict #90
add benchmarks table to docs #91

v0.4.0 (2017-07-08)

show length in string validation error
fix aliases in config during inheritance #55
simplify error display
use unicode ellipsis in truncate
add parse_obj, parse_raw and parse_file helper functions #58
switch annotation only fields to come first in fields list not last

v0.3.0 (2017-06-21)

immutable models via config.allow_mutation = False, associated cleanup and performance improvement #44
immutable helper methods construct() and copy() #53
allow pickling of models #53
setattr is removed as __setattr__ is now intelligent #44
raise_exception removed, Models now always raise exceptions #44
instance method validators removed
django-restful-framework benchmarks added #47
fix inheritance bug #49
make str type stricter so list, dict etc are not coerced to strings. #52
add StrictStr which only always strings as input #52

v0.2.1 (2017-06-07)

pypi and travis together messed up the deploy of v0.2 this should fix it

v0.2.0 (2017-06-07)

breaking change: values() on a model is now a method not a property, takes include and exclude arguments
allow annotation only fields to support mypy
add pretty to_string(pretty=True) method for models

v0.1.0 (2017-06-03)

add docs
add history

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