1581 lines
68 KiB
Python
1581 lines
68 KiB
Python
"""Logic for creating models."""
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from __future__ import annotations as _annotations
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import operator
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import sys
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import types
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import typing
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import warnings
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from copy import copy, deepcopy
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from typing import (
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TYPE_CHECKING,
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Any,
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Callable,
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ClassVar,
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Dict,
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Generator,
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Literal,
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Set,
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Tuple,
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TypeVar,
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Union,
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cast,
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overload,
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)
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import pydantic_core
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import typing_extensions
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from pydantic_core import PydanticUndefined
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from typing_extensions import Self, TypeAlias, Unpack
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from ._internal import (
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_config,
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_decorators,
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_fields,
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_forward_ref,
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_generics,
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_mock_val_ser,
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_model_construction,
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_repr,
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_typing_extra,
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_utils,
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)
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from ._migration import getattr_migration
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from .aliases import AliasChoices, AliasPath
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from .annotated_handlers import GetCoreSchemaHandler, GetJsonSchemaHandler
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from .config import ConfigDict
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from .errors import PydanticUndefinedAnnotation, PydanticUserError
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from .json_schema import DEFAULT_REF_TEMPLATE, GenerateJsonSchema, JsonSchemaMode, JsonSchemaValue, model_json_schema
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from .plugin._schema_validator import PluggableSchemaValidator
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from .warnings import PydanticDeprecatedSince20
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# Always define certain types that are needed to resolve method type hints/annotations
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# (even when not type checking) via typing.get_type_hints.
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ModelT = TypeVar('ModelT', bound='BaseModel')
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TupleGenerator = Generator[Tuple[str, Any], None, None]
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# should be `set[int] | set[str] | dict[int, IncEx] | dict[str, IncEx] | None`, but mypy can't cope
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IncEx: TypeAlias = Union[Set[int], Set[str], Dict[int, Any], Dict[str, Any], None]
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if TYPE_CHECKING:
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from inspect import Signature
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from pathlib import Path
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from pydantic_core import CoreSchema, SchemaSerializer, SchemaValidator
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from ._internal._utils import AbstractSetIntStr, MappingIntStrAny
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from .deprecated.parse import Protocol as DeprecatedParseProtocol
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from .fields import ComputedFieldInfo, FieldInfo, ModelPrivateAttr
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from .fields import PrivateAttr as _PrivateAttr
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else:
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# See PyCharm issues https://youtrack.jetbrains.com/issue/PY-21915
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# and https://youtrack.jetbrains.com/issue/PY-51428
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DeprecationWarning = PydanticDeprecatedSince20
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__all__ = 'BaseModel', 'create_model'
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_object_setattr = _model_construction.object_setattr
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class BaseModel(metaclass=_model_construction.ModelMetaclass):
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"""Usage docs: https://docs.pydantic.dev/2.8/concepts/models/
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A base class for creating Pydantic models.
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Attributes:
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__class_vars__: The names of classvars defined on the model.
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__private_attributes__: Metadata about the private attributes of the model.
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__signature__: The signature for instantiating the model.
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__pydantic_complete__: Whether model building is completed, or if there are still undefined fields.
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__pydantic_core_schema__: The pydantic-core schema used to build the SchemaValidator and SchemaSerializer.
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__pydantic_custom_init__: Whether the model has a custom `__init__` function.
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__pydantic_decorators__: Metadata containing the decorators defined on the model.
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This replaces `Model.__validators__` and `Model.__root_validators__` from Pydantic V1.
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__pydantic_generic_metadata__: Metadata for generic models; contains data used for a similar purpose to
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__args__, __origin__, __parameters__ in typing-module generics. May eventually be replaced by these.
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__pydantic_parent_namespace__: Parent namespace of the model, used for automatic rebuilding of models.
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__pydantic_post_init__: The name of the post-init method for the model, if defined.
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__pydantic_root_model__: Whether the model is a `RootModel`.
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__pydantic_serializer__: The pydantic-core SchemaSerializer used to dump instances of the model.
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__pydantic_validator__: The pydantic-core SchemaValidator used to validate instances of the model.
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__pydantic_extra__: An instance attribute with the values of extra fields from validation when
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`model_config['extra'] == 'allow'`.
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__pydantic_fields_set__: An instance attribute with the names of fields explicitly set.
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__pydantic_private__: Instance attribute with the values of private attributes set on the model instance.
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"""
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if TYPE_CHECKING:
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# Here we provide annotations for the attributes of BaseModel.
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# Many of these are populated by the metaclass, which is why this section is in a `TYPE_CHECKING` block.
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# However, for the sake of easy review, we have included type annotations of all class and instance attributes
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# of `BaseModel` here:
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# Class attributes
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model_config: ClassVar[ConfigDict]
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"""
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Configuration for the model, should be a dictionary conforming to [`ConfigDict`][pydantic.config.ConfigDict].
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"""
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model_fields: ClassVar[dict[str, FieldInfo]]
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"""
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Metadata about the fields defined on the model,
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mapping of field names to [`FieldInfo`][pydantic.fields.FieldInfo].
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This replaces `Model.__fields__` from Pydantic V1.
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"""
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model_computed_fields: ClassVar[dict[str, ComputedFieldInfo]]
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"""A dictionary of computed field names and their corresponding `ComputedFieldInfo` objects."""
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__class_vars__: ClassVar[set[str]]
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__private_attributes__: ClassVar[dict[str, ModelPrivateAttr]]
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__signature__: ClassVar[Signature]
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__pydantic_complete__: ClassVar[bool]
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__pydantic_core_schema__: ClassVar[CoreSchema]
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__pydantic_custom_init__: ClassVar[bool]
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__pydantic_decorators__: ClassVar[_decorators.DecoratorInfos]
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__pydantic_generic_metadata__: ClassVar[_generics.PydanticGenericMetadata]
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__pydantic_parent_namespace__: ClassVar[dict[str, Any] | None]
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__pydantic_post_init__: ClassVar[None | Literal['model_post_init']]
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__pydantic_root_model__: ClassVar[bool]
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__pydantic_serializer__: ClassVar[SchemaSerializer]
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__pydantic_validator__: ClassVar[SchemaValidator | PluggableSchemaValidator]
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# Instance attributes
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__pydantic_extra__: dict[str, Any] | None = _PrivateAttr()
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__pydantic_fields_set__: set[str] = _PrivateAttr()
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__pydantic_private__: dict[str, Any] | None = _PrivateAttr()
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else:
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# `model_fields` and `__pydantic_decorators__` must be set for
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# pydantic._internal._generate_schema.GenerateSchema.model_schema to work for a plain BaseModel annotation
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model_fields = {}
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model_computed_fields = {}
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__pydantic_decorators__ = _decorators.DecoratorInfos()
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__pydantic_parent_namespace__ = None
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# Prevent `BaseModel` from being instantiated directly:
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__pydantic_core_schema__ = _mock_val_ser.MockCoreSchema(
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'Pydantic models should inherit from BaseModel, BaseModel cannot be instantiated directly',
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code='base-model-instantiated',
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)
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__pydantic_validator__ = _mock_val_ser.MockValSer(
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'Pydantic models should inherit from BaseModel, BaseModel cannot be instantiated directly',
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val_or_ser='validator',
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code='base-model-instantiated',
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)
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__pydantic_serializer__ = _mock_val_ser.MockValSer(
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'Pydantic models should inherit from BaseModel, BaseModel cannot be instantiated directly',
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val_or_ser='serializer',
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code='base-model-instantiated',
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)
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__slots__ = '__dict__', '__pydantic_fields_set__', '__pydantic_extra__', '__pydantic_private__'
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model_config = ConfigDict()
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__pydantic_complete__ = False
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__pydantic_root_model__ = False
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def __init__(self, /, **data: Any) -> None: # type: ignore
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"""Create a new model by parsing and validating input data from keyword arguments.
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Raises [`ValidationError`][pydantic_core.ValidationError] if the input data cannot be
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validated to form a valid model.
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`self` is explicitly positional-only to allow `self` as a field name.
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"""
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# `__tracebackhide__` tells pytest and some other tools to omit this function from tracebacks
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__tracebackhide__ = True
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self.__pydantic_validator__.validate_python(data, self_instance=self)
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# The following line sets a flag that we use to determine when `__init__` gets overridden by the user
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__init__.__pydantic_base_init__ = True # pyright: ignore[reportFunctionMemberAccess]
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@property
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def model_extra(self) -> dict[str, Any] | None:
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"""Get extra fields set during validation.
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Returns:
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A dictionary of extra fields, or `None` if `config.extra` is not set to `"allow"`.
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"""
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return self.__pydantic_extra__
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@property
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def model_fields_set(self) -> set[str]:
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"""Returns the set of fields that have been explicitly set on this model instance.
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Returns:
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A set of strings representing the fields that have been set,
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i.e. that were not filled from defaults.
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"""
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return self.__pydantic_fields_set__
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@classmethod
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def model_construct(cls, _fields_set: set[str] | None = None, **values: Any) -> Self: # noqa: C901
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"""Creates a new instance of the `Model` class with validated data.
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Creates a new model setting `__dict__` and `__pydantic_fields_set__` from trusted or pre-validated data.
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Default values are respected, but no other validation is performed.
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!!! note
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`model_construct()` generally respects the `model_config.extra` setting on the provided model.
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That is, if `model_config.extra == 'allow'`, then all extra passed values are added to the model instance's `__dict__`
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and `__pydantic_extra__` fields. If `model_config.extra == 'ignore'` (the default), then all extra passed values are ignored.
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Because no validation is performed with a call to `model_construct()`, having `model_config.extra == 'forbid'` does not result in
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an error if extra values are passed, but they will be ignored.
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Args:
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_fields_set: The set of field names accepted for the Model instance.
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values: Trusted or pre-validated data dictionary.
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Returns:
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A new instance of the `Model` class with validated data.
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"""
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m = cls.__new__(cls)
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fields_values: dict[str, Any] = {}
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fields_set = set()
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for name, field in cls.model_fields.items():
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if field.alias is not None and field.alias in values:
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fields_values[name] = values.pop(field.alias)
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fields_set.add(name)
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if (name not in fields_set) and (field.validation_alias is not None):
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validation_aliases: list[str | AliasPath] = (
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field.validation_alias.choices
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if isinstance(field.validation_alias, AliasChoices)
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else [field.validation_alias]
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)
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for alias in validation_aliases:
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if isinstance(alias, str) and alias in values:
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fields_values[name] = values.pop(alias)
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fields_set.add(name)
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break
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elif isinstance(alias, AliasPath):
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value = alias.search_dict_for_path(values)
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if value is not PydanticUndefined:
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fields_values[name] = value
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fields_set.add(name)
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break
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if name not in fields_set:
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if name in values:
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fields_values[name] = values.pop(name)
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fields_set.add(name)
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elif not field.is_required():
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fields_values[name] = field.get_default(call_default_factory=True)
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if _fields_set is None:
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_fields_set = fields_set
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_extra: dict[str, Any] | None = (
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{k: v for k, v in values.items()} if cls.model_config.get('extra') == 'allow' else None
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)
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_object_setattr(m, '__dict__', fields_values)
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_object_setattr(m, '__pydantic_fields_set__', _fields_set)
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if not cls.__pydantic_root_model__:
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_object_setattr(m, '__pydantic_extra__', _extra)
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if cls.__pydantic_post_init__:
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m.model_post_init(None)
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# update private attributes with values set
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if hasattr(m, '__pydantic_private__') and m.__pydantic_private__ is not None:
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for k, v in values.items():
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if k in m.__private_attributes__:
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m.__pydantic_private__[k] = v
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elif not cls.__pydantic_root_model__:
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# Note: if there are any private attributes, cls.__pydantic_post_init__ would exist
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# Since it doesn't, that means that `__pydantic_private__` should be set to None
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_object_setattr(m, '__pydantic_private__', None)
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return m
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def model_copy(self, *, update: dict[str, Any] | None = None, deep: bool = False) -> Self:
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"""Usage docs: https://docs.pydantic.dev/2.8/concepts/serialization/#model_copy
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Returns a copy of the model.
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Args:
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update: Values to change/add in the new model. Note: the data is not validated
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before creating the new model. You should trust this data.
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deep: Set to `True` to make a deep copy of the model.
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Returns:
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New model instance.
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"""
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copied = self.__deepcopy__() if deep else self.__copy__()
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if update:
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if self.model_config.get('extra') == 'allow':
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for k, v in update.items():
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if k in self.model_fields:
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copied.__dict__[k] = v
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else:
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if copied.__pydantic_extra__ is None:
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copied.__pydantic_extra__ = {}
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copied.__pydantic_extra__[k] = v
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else:
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copied.__dict__.update(update)
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copied.__pydantic_fields_set__.update(update.keys())
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return copied
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def model_dump(
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self,
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*,
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mode: Literal['json', 'python'] | str = 'python',
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include: IncEx = None,
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exclude: IncEx = None,
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context: Any | None = None,
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by_alias: bool = False,
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exclude_unset: bool = False,
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exclude_defaults: bool = False,
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exclude_none: bool = False,
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round_trip: bool = False,
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warnings: bool | Literal['none', 'warn', 'error'] = True,
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serialize_as_any: bool = False,
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) -> dict[str, Any]:
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"""Usage docs: https://docs.pydantic.dev/2.8/concepts/serialization/#modelmodel_dump
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Generate a dictionary representation of the model, optionally specifying which fields to include or exclude.
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Args:
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mode: The mode in which `to_python` should run.
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If mode is 'json', the output will only contain JSON serializable types.
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If mode is 'python', the output may contain non-JSON-serializable Python objects.
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include: A set of fields to include in the output.
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exclude: A set of fields to exclude from the output.
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context: Additional context to pass to the serializer.
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by_alias: Whether to use the field's alias in the dictionary key if defined.
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exclude_unset: Whether to exclude fields that have not been explicitly set.
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exclude_defaults: Whether to exclude fields that are set to their default value.
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exclude_none: Whether to exclude fields that have a value of `None`.
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round_trip: If True, dumped values should be valid as input for non-idempotent types such as Json[T].
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warnings: How to handle serialization errors. False/"none" ignores them, True/"warn" logs errors,
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"error" raises a [`PydanticSerializationError`][pydantic_core.PydanticSerializationError].
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serialize_as_any: Whether to serialize fields with duck-typing serialization behavior.
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Returns:
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A dictionary representation of the model.
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"""
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return self.__pydantic_serializer__.to_python(
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self,
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mode=mode,
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by_alias=by_alias,
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include=include,
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exclude=exclude,
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context=context,
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exclude_unset=exclude_unset,
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exclude_defaults=exclude_defaults,
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exclude_none=exclude_none,
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round_trip=round_trip,
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warnings=warnings,
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serialize_as_any=serialize_as_any,
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)
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def model_dump_json(
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self,
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*,
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indent: int | None = None,
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include: IncEx = None,
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exclude: IncEx = None,
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context: Any | None = None,
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by_alias: bool = False,
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exclude_unset: bool = False,
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exclude_defaults: bool = False,
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exclude_none: bool = False,
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round_trip: bool = False,
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warnings: bool | Literal['none', 'warn', 'error'] = True,
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serialize_as_any: bool = False,
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) -> str:
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"""Usage docs: https://docs.pydantic.dev/2.8/concepts/serialization/#modelmodel_dump_json
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Generates a JSON representation of the model using Pydantic's `to_json` method.
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Args:
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indent: Indentation to use in the JSON output. If None is passed, the output will be compact.
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include: Field(s) to include in the JSON output.
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exclude: Field(s) to exclude from the JSON output.
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context: Additional context to pass to the serializer.
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by_alias: Whether to serialize using field aliases.
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exclude_unset: Whether to exclude fields that have not been explicitly set.
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exclude_defaults: Whether to exclude fields that are set to their default value.
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exclude_none: Whether to exclude fields that have a value of `None`.
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round_trip: If True, dumped values should be valid as input for non-idempotent types such as Json[T].
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warnings: How to handle serialization errors. False/"none" ignores them, True/"warn" logs errors,
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"error" raises a [`PydanticSerializationError`][pydantic_core.PydanticSerializationError].
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serialize_as_any: Whether to serialize fields with duck-typing serialization behavior.
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Returns:
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A JSON string representation of the model.
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"""
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return self.__pydantic_serializer__.to_json(
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self,
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indent=indent,
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include=include,
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exclude=exclude,
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context=context,
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by_alias=by_alias,
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exclude_unset=exclude_unset,
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exclude_defaults=exclude_defaults,
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exclude_none=exclude_none,
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round_trip=round_trip,
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warnings=warnings,
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serialize_as_any=serialize_as_any,
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).decode()
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@classmethod
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def model_json_schema(
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cls,
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by_alias: bool = True,
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ref_template: str = DEFAULT_REF_TEMPLATE,
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schema_generator: type[GenerateJsonSchema] = GenerateJsonSchema,
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mode: JsonSchemaMode = 'validation',
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) -> dict[str, Any]:
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"""Generates a JSON schema for a model class.
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Args:
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by_alias: Whether to use attribute aliases or not.
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ref_template: The reference template.
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schema_generator: To override the logic used to generate the JSON schema, as a subclass of
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`GenerateJsonSchema` with your desired modifications
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mode: The mode in which to generate the schema.
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Returns:
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The JSON schema for the given model class.
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"""
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return model_json_schema(
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cls, by_alias=by_alias, ref_template=ref_template, schema_generator=schema_generator, mode=mode
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)
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@classmethod
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def model_parametrized_name(cls, params: tuple[type[Any], ...]) -> str:
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"""Compute the class name for parametrizations of generic classes.
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This method can be overridden to achieve a custom naming scheme for generic BaseModels.
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Args:
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params: Tuple of types of the class. Given a generic class
|
|
`Model` with 2 type variables and a concrete model `Model[str, int]`,
|
|
the value `(str, int)` would be passed to `params`.
|
|
|
|
Returns:
|
|
String representing the new class where `params` are passed to `cls` as type variables.
|
|
|
|
Raises:
|
|
TypeError: Raised when trying to generate concrete names for non-generic models.
|
|
"""
|
|
if not issubclass(cls, typing.Generic):
|
|
raise TypeError('Concrete names should only be generated for generic models.')
|
|
|
|
# Any strings received should represent forward references, so we handle them specially below.
|
|
# If we eventually move toward wrapping them in a ForwardRef in __class_getitem__ in the future,
|
|
# we may be able to remove this special case.
|
|
param_names = [param if isinstance(param, str) else _repr.display_as_type(param) for param in params]
|
|
params_component = ', '.join(param_names)
|
|
return f'{cls.__name__}[{params_component}]'
|
|
|
|
def model_post_init(self, __context: Any) -> None:
|
|
"""Override this method to perform additional initialization after `__init__` and `model_construct`.
|
|
This is useful if you want to do some validation that requires the entire model to be initialized.
|
|
"""
|
|
pass
|
|
|
|
@classmethod
|
|
def model_rebuild(
|
|
cls,
|
|
*,
|
|
force: bool = False,
|
|
raise_errors: bool = True,
|
|
_parent_namespace_depth: int = 2,
|
|
_types_namespace: dict[str, Any] | None = None,
|
|
) -> bool | None:
|
|
"""Try to rebuild the pydantic-core schema for the model.
|
|
|
|
This may be necessary when one of the annotations is a ForwardRef which could not be resolved during
|
|
the initial attempt to build the schema, and automatic rebuilding fails.
|
|
|
|
Args:
|
|
force: Whether to force the rebuilding of the model schema, defaults to `False`.
|
|
raise_errors: Whether to raise errors, defaults to `True`.
|
|
_parent_namespace_depth: The depth level of the parent namespace, defaults to 2.
|
|
_types_namespace: The types namespace, defaults to `None`.
|
|
|
|
Returns:
|
|
Returns `None` if the schema is already "complete" and rebuilding was not required.
|
|
If rebuilding _was_ required, returns `True` if rebuilding was successful, otherwise `False`.
|
|
"""
|
|
if not force and cls.__pydantic_complete__:
|
|
return None
|
|
else:
|
|
if '__pydantic_core_schema__' in cls.__dict__:
|
|
delattr(cls, '__pydantic_core_schema__') # delete cached value to ensure full rebuild happens
|
|
if _types_namespace is not None:
|
|
types_namespace: dict[str, Any] | None = _types_namespace.copy()
|
|
else:
|
|
if _parent_namespace_depth > 0:
|
|
frame_parent_ns = _typing_extra.parent_frame_namespace(parent_depth=_parent_namespace_depth) or {}
|
|
cls_parent_ns = (
|
|
_model_construction.unpack_lenient_weakvaluedict(cls.__pydantic_parent_namespace__) or {}
|
|
)
|
|
types_namespace = {**cls_parent_ns, **frame_parent_ns}
|
|
cls.__pydantic_parent_namespace__ = _model_construction.build_lenient_weakvaluedict(types_namespace)
|
|
else:
|
|
types_namespace = _model_construction.unpack_lenient_weakvaluedict(
|
|
cls.__pydantic_parent_namespace__
|
|
)
|
|
|
|
types_namespace = _typing_extra.get_cls_types_namespace(cls, types_namespace)
|
|
|
|
# manually override defer_build so complete_model_class doesn't skip building the model again
|
|
config = {**cls.model_config, 'defer_build': False}
|
|
return _model_construction.complete_model_class(
|
|
cls,
|
|
cls.__name__,
|
|
_config.ConfigWrapper(config, check=False),
|
|
raise_errors=raise_errors,
|
|
types_namespace=types_namespace,
|
|
)
|
|
|
|
@classmethod
|
|
def model_validate(
|
|
cls,
|
|
obj: Any,
|
|
*,
|
|
strict: bool | None = None,
|
|
from_attributes: bool | None = None,
|
|
context: Any | None = None,
|
|
) -> Self:
|
|
"""Validate a pydantic model instance.
|
|
|
|
Args:
|
|
obj: The object to validate.
|
|
strict: Whether to enforce types strictly.
|
|
from_attributes: Whether to extract data from object attributes.
|
|
context: Additional context to pass to the validator.
|
|
|
|
Raises:
|
|
ValidationError: If the object could not be validated.
|
|
|
|
Returns:
|
|
The validated model instance.
|
|
"""
|
|
# `__tracebackhide__` tells pytest and some other tools to omit this function from tracebacks
|
|
__tracebackhide__ = True
|
|
return cls.__pydantic_validator__.validate_python(
|
|
obj, strict=strict, from_attributes=from_attributes, context=context
|
|
)
|
|
|
|
@classmethod
|
|
def model_validate_json(
|
|
cls,
|
|
json_data: str | bytes | bytearray,
|
|
*,
|
|
strict: bool | None = None,
|
|
context: Any | None = None,
|
|
) -> Self:
|
|
"""Usage docs: https://docs.pydantic.dev/2.8/concepts/json/#json-parsing
|
|
|
|
Validate the given JSON data against the Pydantic model.
|
|
|
|
Args:
|
|
json_data: The JSON data to validate.
|
|
strict: Whether to enforce types strictly.
|
|
context: Extra variables to pass to the validator.
|
|
|
|
Returns:
|
|
The validated Pydantic model.
|
|
|
|
Raises:
|
|
ValueError: If `json_data` is not a JSON string.
|
|
"""
|
|
# `__tracebackhide__` tells pytest and some other tools to omit this function from tracebacks
|
|
__tracebackhide__ = True
|
|
return cls.__pydantic_validator__.validate_json(json_data, strict=strict, context=context)
|
|
|
|
@classmethod
|
|
def model_validate_strings(
|
|
cls,
|
|
obj: Any,
|
|
*,
|
|
strict: bool | None = None,
|
|
context: Any | None = None,
|
|
) -> Self:
|
|
"""Validate the given object with string data against the Pydantic model.
|
|
|
|
Args:
|
|
obj: The object containing string data to validate.
|
|
strict: Whether to enforce types strictly.
|
|
context: Extra variables to pass to the validator.
|
|
|
|
Returns:
|
|
The validated Pydantic model.
|
|
"""
|
|
# `__tracebackhide__` tells pytest and some other tools to omit this function from tracebacks
|
|
__tracebackhide__ = True
|
|
return cls.__pydantic_validator__.validate_strings(obj, strict=strict, context=context)
|
|
|
|
@classmethod
|
|
def __get_pydantic_core_schema__(cls, source: type[BaseModel], handler: GetCoreSchemaHandler, /) -> CoreSchema:
|
|
"""Hook into generating the model's CoreSchema.
|
|
|
|
Args:
|
|
source: The class we are generating a schema for.
|
|
This will generally be the same as the `cls` argument if this is a classmethod.
|
|
handler: A callable that calls into Pydantic's internal CoreSchema generation logic.
|
|
|
|
Returns:
|
|
A `pydantic-core` `CoreSchema`.
|
|
"""
|
|
# Only use the cached value from this _exact_ class; we don't want one from a parent class
|
|
# This is why we check `cls.__dict__` and don't use `cls.__pydantic_core_schema__` or similar.
|
|
schema = cls.__dict__.get('__pydantic_core_schema__')
|
|
if schema is not None and not isinstance(schema, _mock_val_ser.MockCoreSchema):
|
|
# Due to the way generic classes are built, it's possible that an invalid schema may be temporarily
|
|
# set on generic classes. I think we could resolve this to ensure that we get proper schema caching
|
|
# for generics, but for simplicity for now, we just always rebuild if the class has a generic origin.
|
|
if not cls.__pydantic_generic_metadata__['origin']:
|
|
return cls.__pydantic_core_schema__
|
|
|
|
return handler(source)
|
|
|
|
@classmethod
|
|
def __get_pydantic_json_schema__(
|
|
cls,
|
|
core_schema: CoreSchema,
|
|
handler: GetJsonSchemaHandler,
|
|
/,
|
|
) -> JsonSchemaValue:
|
|
"""Hook into generating the model's JSON schema.
|
|
|
|
Args:
|
|
core_schema: A `pydantic-core` CoreSchema.
|
|
You can ignore this argument and call the handler with a new CoreSchema,
|
|
wrap this CoreSchema (`{'type': 'nullable', 'schema': current_schema}`),
|
|
or just call the handler with the original schema.
|
|
handler: Call into Pydantic's internal JSON schema generation.
|
|
This will raise a `pydantic.errors.PydanticInvalidForJsonSchema` if JSON schema
|
|
generation fails.
|
|
Since this gets called by `BaseModel.model_json_schema` you can override the
|
|
`schema_generator` argument to that function to change JSON schema generation globally
|
|
for a type.
|
|
|
|
Returns:
|
|
A JSON schema, as a Python object.
|
|
"""
|
|
return handler(core_schema)
|
|
|
|
@classmethod
|
|
def __pydantic_init_subclass__(cls, **kwargs: Any) -> None:
|
|
"""This is intended to behave just like `__init_subclass__`, but is called by `ModelMetaclass`
|
|
only after the class is actually fully initialized. In particular, attributes like `model_fields` will
|
|
be present when this is called.
|
|
|
|
This is necessary because `__init_subclass__` will always be called by `type.__new__`,
|
|
and it would require a prohibitively large refactor to the `ModelMetaclass` to ensure that
|
|
`type.__new__` was called in such a manner that the class would already be sufficiently initialized.
|
|
|
|
This will receive the same `kwargs` that would be passed to the standard `__init_subclass__`, namely,
|
|
any kwargs passed to the class definition that aren't used internally by pydantic.
|
|
|
|
Args:
|
|
**kwargs: Any keyword arguments passed to the class definition that aren't used internally
|
|
by pydantic.
|
|
"""
|
|
pass
|
|
|
|
def __class_getitem__(
|
|
cls, typevar_values: type[Any] | tuple[type[Any], ...]
|
|
) -> type[BaseModel] | _forward_ref.PydanticRecursiveRef:
|
|
cached = _generics.get_cached_generic_type_early(cls, typevar_values)
|
|
if cached is not None:
|
|
return cached
|
|
|
|
if cls is BaseModel:
|
|
raise TypeError('Type parameters should be placed on typing.Generic, not BaseModel')
|
|
if not hasattr(cls, '__parameters__'):
|
|
raise TypeError(f'{cls} cannot be parametrized because it does not inherit from typing.Generic')
|
|
if not cls.__pydantic_generic_metadata__['parameters'] and typing.Generic not in cls.__bases__:
|
|
raise TypeError(f'{cls} is not a generic class')
|
|
|
|
if not isinstance(typevar_values, tuple):
|
|
typevar_values = (typevar_values,)
|
|
_generics.check_parameters_count(cls, typevar_values)
|
|
|
|
# Build map from generic typevars to passed params
|
|
typevars_map: dict[_typing_extra.TypeVarType, type[Any]] = dict(
|
|
zip(cls.__pydantic_generic_metadata__['parameters'], typevar_values)
|
|
)
|
|
|
|
if _utils.all_identical(typevars_map.keys(), typevars_map.values()) and typevars_map:
|
|
submodel = cls # if arguments are equal to parameters it's the same object
|
|
_generics.set_cached_generic_type(cls, typevar_values, submodel)
|
|
else:
|
|
parent_args = cls.__pydantic_generic_metadata__['args']
|
|
if not parent_args:
|
|
args = typevar_values
|
|
else:
|
|
args = tuple(_generics.replace_types(arg, typevars_map) for arg in parent_args)
|
|
|
|
origin = cls.__pydantic_generic_metadata__['origin'] or cls
|
|
model_name = origin.model_parametrized_name(args)
|
|
params = tuple(
|
|
{param: None for param in _generics.iter_contained_typevars(typevars_map.values())}
|
|
) # use dict as ordered set
|
|
|
|
with _generics.generic_recursion_self_type(origin, args) as maybe_self_type:
|
|
if maybe_self_type is not None:
|
|
return maybe_self_type
|
|
|
|
cached = _generics.get_cached_generic_type_late(cls, typevar_values, origin, args)
|
|
if cached is not None:
|
|
return cached
|
|
|
|
# Attempt to rebuild the origin in case new types have been defined
|
|
try:
|
|
# depth 3 gets you above this __class_getitem__ call
|
|
origin.model_rebuild(_parent_namespace_depth=3)
|
|
except PydanticUndefinedAnnotation:
|
|
# It's okay if it fails, it just means there are still undefined types
|
|
# that could be evaluated later.
|
|
# TODO: Make sure validation fails if there are still undefined types, perhaps using MockValidator
|
|
pass
|
|
|
|
submodel = _generics.create_generic_submodel(model_name, origin, args, params)
|
|
|
|
# Update cache
|
|
_generics.set_cached_generic_type(cls, typevar_values, submodel, origin, args)
|
|
|
|
return submodel
|
|
|
|
def __copy__(self) -> Self:
|
|
"""Returns a shallow copy of the model."""
|
|
cls = type(self)
|
|
m = cls.__new__(cls)
|
|
_object_setattr(m, '__dict__', copy(self.__dict__))
|
|
_object_setattr(m, '__pydantic_extra__', copy(self.__pydantic_extra__))
|
|
_object_setattr(m, '__pydantic_fields_set__', copy(self.__pydantic_fields_set__))
|
|
|
|
if not hasattr(self, '__pydantic_private__') or self.__pydantic_private__ is None:
|
|
_object_setattr(m, '__pydantic_private__', None)
|
|
else:
|
|
_object_setattr(
|
|
m,
|
|
'__pydantic_private__',
|
|
{k: v for k, v in self.__pydantic_private__.items() if v is not PydanticUndefined},
|
|
)
|
|
|
|
return m
|
|
|
|
def __deepcopy__(self, memo: dict[int, Any] | None = None) -> Self:
|
|
"""Returns a deep copy of the model."""
|
|
cls = type(self)
|
|
m = cls.__new__(cls)
|
|
_object_setattr(m, '__dict__', deepcopy(self.__dict__, memo=memo))
|
|
_object_setattr(m, '__pydantic_extra__', deepcopy(self.__pydantic_extra__, memo=memo))
|
|
# This next line doesn't need a deepcopy because __pydantic_fields_set__ is a set[str],
|
|
# and attempting a deepcopy would be marginally slower.
|
|
_object_setattr(m, '__pydantic_fields_set__', copy(self.__pydantic_fields_set__))
|
|
|
|
if not hasattr(self, '__pydantic_private__') or self.__pydantic_private__ is None:
|
|
_object_setattr(m, '__pydantic_private__', None)
|
|
else:
|
|
_object_setattr(
|
|
m,
|
|
'__pydantic_private__',
|
|
deepcopy({k: v for k, v in self.__pydantic_private__.items() if v is not PydanticUndefined}, memo=memo),
|
|
)
|
|
|
|
return m
|
|
|
|
if not TYPE_CHECKING:
|
|
# We put `__getattr__` in a non-TYPE_CHECKING block because otherwise, mypy allows arbitrary attribute access
|
|
# The same goes for __setattr__ and __delattr__, see: https://github.com/pydantic/pydantic/issues/8643
|
|
|
|
def __getattr__(self, item: str) -> Any:
|
|
private_attributes = object.__getattribute__(self, '__private_attributes__')
|
|
if item in private_attributes:
|
|
attribute = private_attributes[item]
|
|
if hasattr(attribute, '__get__'):
|
|
return attribute.__get__(self, type(self)) # type: ignore
|
|
|
|
try:
|
|
# Note: self.__pydantic_private__ cannot be None if self.__private_attributes__ has items
|
|
return self.__pydantic_private__[item] # type: ignore
|
|
except KeyError as exc:
|
|
raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}') from exc
|
|
else:
|
|
# `__pydantic_extra__` can fail to be set if the model is not yet fully initialized.
|
|
# See `BaseModel.__repr_args__` for more details
|
|
try:
|
|
pydantic_extra = object.__getattribute__(self, '__pydantic_extra__')
|
|
except AttributeError:
|
|
pydantic_extra = None
|
|
|
|
if pydantic_extra:
|
|
try:
|
|
return pydantic_extra[item]
|
|
except KeyError as exc:
|
|
raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}') from exc
|
|
else:
|
|
if hasattr(self.__class__, item):
|
|
return super().__getattribute__(item) # Raises AttributeError if appropriate
|
|
else:
|
|
# this is the current error
|
|
raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')
|
|
|
|
def __setattr__(self, name: str, value: Any) -> None:
|
|
if name in self.__class_vars__:
|
|
raise AttributeError(
|
|
f'{name!r} is a ClassVar of `{self.__class__.__name__}` and cannot be set on an instance. '
|
|
f'If you want to set a value on the class, use `{self.__class__.__name__}.{name} = value`.'
|
|
)
|
|
elif not _fields.is_valid_field_name(name):
|
|
if self.__pydantic_private__ is None or name not in self.__private_attributes__:
|
|
_object_setattr(self, name, value)
|
|
else:
|
|
attribute = self.__private_attributes__[name]
|
|
if hasattr(attribute, '__set__'):
|
|
attribute.__set__(self, value) # type: ignore
|
|
else:
|
|
self.__pydantic_private__[name] = value
|
|
return
|
|
|
|
self._check_frozen(name, value)
|
|
|
|
attr = getattr(self.__class__, name, None)
|
|
if isinstance(attr, property):
|
|
attr.__set__(self, value)
|
|
elif self.model_config.get('validate_assignment', None):
|
|
self.__pydantic_validator__.validate_assignment(self, name, value)
|
|
elif self.model_config.get('extra') != 'allow' and name not in self.model_fields:
|
|
# TODO - matching error
|
|
raise ValueError(f'"{self.__class__.__name__}" object has no field "{name}"')
|
|
elif self.model_config.get('extra') == 'allow' and name not in self.model_fields:
|
|
if self.model_extra and name in self.model_extra:
|
|
self.__pydantic_extra__[name] = value # type: ignore
|
|
else:
|
|
try:
|
|
getattr(self, name)
|
|
except AttributeError:
|
|
# attribute does not already exist on instance, so put it in extra
|
|
self.__pydantic_extra__[name] = value # type: ignore
|
|
else:
|
|
# attribute _does_ already exist on instance, and was not in extra, so update it
|
|
_object_setattr(self, name, value)
|
|
else:
|
|
self.__dict__[name] = value
|
|
self.__pydantic_fields_set__.add(name)
|
|
|
|
def __delattr__(self, item: str) -> Any:
|
|
if item in self.__private_attributes__:
|
|
attribute = self.__private_attributes__[item]
|
|
if hasattr(attribute, '__delete__'):
|
|
attribute.__delete__(self) # type: ignore
|
|
return
|
|
|
|
try:
|
|
# Note: self.__pydantic_private__ cannot be None if self.__private_attributes__ has items
|
|
del self.__pydantic_private__[item] # type: ignore
|
|
return
|
|
except KeyError as exc:
|
|
raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}') from exc
|
|
|
|
self._check_frozen(item, None)
|
|
|
|
if item in self.model_fields:
|
|
object.__delattr__(self, item)
|
|
elif self.__pydantic_extra__ is not None and item in self.__pydantic_extra__:
|
|
del self.__pydantic_extra__[item]
|
|
else:
|
|
try:
|
|
object.__delattr__(self, item)
|
|
except AttributeError:
|
|
raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')
|
|
|
|
def _check_frozen(self, name: str, value: Any) -> None:
|
|
if self.model_config.get('frozen', None):
|
|
typ = 'frozen_instance'
|
|
elif getattr(self.model_fields.get(name), 'frozen', False):
|
|
typ = 'frozen_field'
|
|
else:
|
|
return
|
|
error: pydantic_core.InitErrorDetails = {
|
|
'type': typ,
|
|
'loc': (name,),
|
|
'input': value,
|
|
}
|
|
raise pydantic_core.ValidationError.from_exception_data(self.__class__.__name__, [error])
|
|
|
|
def __getstate__(self) -> dict[Any, Any]:
|
|
private = self.__pydantic_private__
|
|
if private:
|
|
private = {k: v for k, v in private.items() if v is not PydanticUndefined}
|
|
return {
|
|
'__dict__': self.__dict__,
|
|
'__pydantic_extra__': self.__pydantic_extra__,
|
|
'__pydantic_fields_set__': self.__pydantic_fields_set__,
|
|
'__pydantic_private__': private,
|
|
}
|
|
|
|
def __setstate__(self, state: dict[Any, Any]) -> None:
|
|
_object_setattr(self, '__pydantic_fields_set__', state.get('__pydantic_fields_set__', {}))
|
|
_object_setattr(self, '__pydantic_extra__', state.get('__pydantic_extra__', {}))
|
|
_object_setattr(self, '__pydantic_private__', state.get('__pydantic_private__', {}))
|
|
_object_setattr(self, '__dict__', state.get('__dict__', {}))
|
|
|
|
if not TYPE_CHECKING:
|
|
|
|
def __eq__(self, other: Any) -> bool:
|
|
if isinstance(other, BaseModel):
|
|
# When comparing instances of generic types for equality, as long as all field values are equal,
|
|
# only require their generic origin types to be equal, rather than exact type equality.
|
|
# This prevents headaches like MyGeneric(x=1) != MyGeneric[Any](x=1).
|
|
self_type = self.__pydantic_generic_metadata__['origin'] or self.__class__
|
|
other_type = other.__pydantic_generic_metadata__['origin'] or other.__class__
|
|
|
|
# Perform common checks first
|
|
if not (
|
|
self_type == other_type
|
|
and getattr(self, '__pydantic_private__', None) == getattr(other, '__pydantic_private__', None)
|
|
and self.__pydantic_extra__ == other.__pydantic_extra__
|
|
):
|
|
return False
|
|
|
|
# We only want to compare pydantic fields but ignoring fields is costly.
|
|
# We'll perform a fast check first, and fallback only when needed
|
|
# See GH-7444 and GH-7825 for rationale and a performance benchmark
|
|
|
|
# First, do the fast (and sometimes faulty) __dict__ comparison
|
|
if self.__dict__ == other.__dict__:
|
|
# If the check above passes, then pydantic fields are equal, we can return early
|
|
return True
|
|
|
|
# We don't want to trigger unnecessary costly filtering of __dict__ on all unequal objects, so we return
|
|
# early if there are no keys to ignore (we would just return False later on anyway)
|
|
model_fields = type(self).model_fields.keys()
|
|
if self.__dict__.keys() <= model_fields and other.__dict__.keys() <= model_fields:
|
|
return False
|
|
|
|
# If we reach here, there are non-pydantic-fields keys, mapped to unequal values, that we need to ignore
|
|
# Resort to costly filtering of the __dict__ objects
|
|
# We use operator.itemgetter because it is much faster than dict comprehensions
|
|
# NOTE: Contrary to standard python class and instances, when the Model class has a default value for an
|
|
# attribute and the model instance doesn't have a corresponding attribute, accessing the missing attribute
|
|
# raises an error in BaseModel.__getattr__ instead of returning the class attribute
|
|
# So we can use operator.itemgetter() instead of operator.attrgetter()
|
|
getter = operator.itemgetter(*model_fields) if model_fields else lambda _: _utils._SENTINEL
|
|
try:
|
|
return getter(self.__dict__) == getter(other.__dict__)
|
|
except KeyError:
|
|
# In rare cases (such as when using the deprecated BaseModel.copy() method),
|
|
# the __dict__ may not contain all model fields, which is how we can get here.
|
|
# getter(self.__dict__) is much faster than any 'safe' method that accounts
|
|
# for missing keys, and wrapping it in a `try` doesn't slow things down much
|
|
# in the common case.
|
|
self_fields_proxy = _utils.SafeGetItemProxy(self.__dict__)
|
|
other_fields_proxy = _utils.SafeGetItemProxy(other.__dict__)
|
|
return getter(self_fields_proxy) == getter(other_fields_proxy)
|
|
|
|
# other instance is not a BaseModel
|
|
else:
|
|
return NotImplemented # delegate to the other item in the comparison
|
|
|
|
if TYPE_CHECKING:
|
|
# We put `__init_subclass__` in a TYPE_CHECKING block because, even though we want the type-checking benefits
|
|
# described in the signature of `__init_subclass__` below, we don't want to modify the default behavior of
|
|
# subclass initialization.
|
|
|
|
def __init_subclass__(cls, **kwargs: Unpack[ConfigDict]):
|
|
"""This signature is included purely to help type-checkers check arguments to class declaration, which
|
|
provides a way to conveniently set model_config key/value pairs.
|
|
|
|
```py
|
|
from pydantic import BaseModel
|
|
|
|
class MyModel(BaseModel, extra='allow'):
|
|
...
|
|
```
|
|
|
|
However, this may be deceiving, since the _actual_ calls to `__init_subclass__` will not receive any
|
|
of the config arguments, and will only receive any keyword arguments passed during class initialization
|
|
that are _not_ expected keys in ConfigDict. (This is due to the way `ModelMetaclass.__new__` works.)
|
|
|
|
Args:
|
|
**kwargs: Keyword arguments passed to the class definition, which set model_config
|
|
|
|
Note:
|
|
You may want to override `__pydantic_init_subclass__` instead, which behaves similarly but is called
|
|
*after* the class is fully initialized.
|
|
"""
|
|
|
|
def __iter__(self) -> TupleGenerator:
|
|
"""So `dict(model)` works."""
|
|
yield from [(k, v) for (k, v) in self.__dict__.items() if not k.startswith('_')]
|
|
extra = self.__pydantic_extra__
|
|
if extra:
|
|
yield from extra.items()
|
|
|
|
def __repr__(self) -> str:
|
|
return f'{self.__repr_name__()}({self.__repr_str__(", ")})'
|
|
|
|
def __repr_args__(self) -> _repr.ReprArgs:
|
|
for k, v in self.__dict__.items():
|
|
field = self.model_fields.get(k)
|
|
if field and field.repr:
|
|
yield k, v
|
|
|
|
# `__pydantic_extra__` can fail to be set if the model is not yet fully initialized.
|
|
# This can happen if a `ValidationError` is raised during initialization and the instance's
|
|
# repr is generated as part of the exception handling. Therefore, we use `getattr` here
|
|
# with a fallback, even though the type hints indicate the attribute will always be present.
|
|
try:
|
|
pydantic_extra = object.__getattribute__(self, '__pydantic_extra__')
|
|
except AttributeError:
|
|
pydantic_extra = None
|
|
|
|
if pydantic_extra is not None:
|
|
yield from ((k, v) for k, v in pydantic_extra.items())
|
|
yield from ((k, getattr(self, k)) for k, v in self.model_computed_fields.items() if v.repr)
|
|
|
|
# take logic from `_repr.Representation` without the side effects of inheritance, see #5740
|
|
__repr_name__ = _repr.Representation.__repr_name__
|
|
__repr_str__ = _repr.Representation.__repr_str__
|
|
__pretty__ = _repr.Representation.__pretty__
|
|
__rich_repr__ = _repr.Representation.__rich_repr__
|
|
|
|
def __str__(self) -> str:
|
|
return self.__repr_str__(' ')
|
|
|
|
# ##### Deprecated methods from v1 #####
|
|
@property
|
|
@typing_extensions.deprecated(
|
|
'The `__fields__` attribute is deprecated, use `model_fields` instead.', category=None
|
|
)
|
|
def __fields__(self) -> dict[str, FieldInfo]:
|
|
warnings.warn(
|
|
'The `__fields__` attribute is deprecated, use `model_fields` instead.', category=PydanticDeprecatedSince20
|
|
)
|
|
return self.model_fields
|
|
|
|
@property
|
|
@typing_extensions.deprecated(
|
|
'The `__fields_set__` attribute is deprecated, use `model_fields_set` instead.',
|
|
category=None,
|
|
)
|
|
def __fields_set__(self) -> set[str]:
|
|
warnings.warn(
|
|
'The `__fields_set__` attribute is deprecated, use `model_fields_set` instead.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
return self.__pydantic_fields_set__
|
|
|
|
@typing_extensions.deprecated('The `dict` method is deprecated; use `model_dump` instead.', category=None)
|
|
def dict( # noqa: D102
|
|
self,
|
|
*,
|
|
include: IncEx = None,
|
|
exclude: IncEx = None,
|
|
by_alias: bool = False,
|
|
exclude_unset: bool = False,
|
|
exclude_defaults: bool = False,
|
|
exclude_none: bool = False,
|
|
) -> Dict[str, Any]: # noqa UP006
|
|
warnings.warn('The `dict` method is deprecated; use `model_dump` instead.', category=PydanticDeprecatedSince20)
|
|
return self.model_dump(
|
|
include=include,
|
|
exclude=exclude,
|
|
by_alias=by_alias,
|
|
exclude_unset=exclude_unset,
|
|
exclude_defaults=exclude_defaults,
|
|
exclude_none=exclude_none,
|
|
)
|
|
|
|
@typing_extensions.deprecated('The `json` method is deprecated; use `model_dump_json` instead.', category=None)
|
|
def json( # noqa: D102
|
|
self,
|
|
*,
|
|
include: IncEx = None,
|
|
exclude: IncEx = None,
|
|
by_alias: bool = False,
|
|
exclude_unset: bool = False,
|
|
exclude_defaults: bool = False,
|
|
exclude_none: bool = False,
|
|
encoder: Callable[[Any], Any] | None = PydanticUndefined, # type: ignore[assignment]
|
|
models_as_dict: bool = PydanticUndefined, # type: ignore[assignment]
|
|
**dumps_kwargs: Any,
|
|
) -> str:
|
|
warnings.warn(
|
|
'The `json` method is deprecated; use `model_dump_json` instead.', category=PydanticDeprecatedSince20
|
|
)
|
|
if encoder is not PydanticUndefined:
|
|
raise TypeError('The `encoder` argument is no longer supported; use field serializers instead.')
|
|
if models_as_dict is not PydanticUndefined:
|
|
raise TypeError('The `models_as_dict` argument is no longer supported; use a model serializer instead.')
|
|
if dumps_kwargs:
|
|
raise TypeError('`dumps_kwargs` keyword arguments are no longer supported.')
|
|
return self.model_dump_json(
|
|
include=include,
|
|
exclude=exclude,
|
|
by_alias=by_alias,
|
|
exclude_unset=exclude_unset,
|
|
exclude_defaults=exclude_defaults,
|
|
exclude_none=exclude_none,
|
|
)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated('The `parse_obj` method is deprecated; use `model_validate` instead.', category=None)
|
|
def parse_obj(cls, obj: Any) -> Self: # noqa: D102
|
|
warnings.warn(
|
|
'The `parse_obj` method is deprecated; use `model_validate` instead.', category=PydanticDeprecatedSince20
|
|
)
|
|
return cls.model_validate(obj)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated(
|
|
'The `parse_raw` method is deprecated; if your data is JSON use `model_validate_json`, '
|
|
'otherwise load the data then use `model_validate` instead.',
|
|
category=None,
|
|
)
|
|
def parse_raw( # noqa: D102
|
|
cls,
|
|
b: str | bytes,
|
|
*,
|
|
content_type: str | None = None,
|
|
encoding: str = 'utf8',
|
|
proto: DeprecatedParseProtocol | None = None,
|
|
allow_pickle: bool = False,
|
|
) -> Self: # pragma: no cover
|
|
warnings.warn(
|
|
'The `parse_raw` method is deprecated; if your data is JSON use `model_validate_json`, '
|
|
'otherwise load the data then use `model_validate` instead.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import parse
|
|
|
|
try:
|
|
obj = parse.load_str_bytes(
|
|
b,
|
|
proto=proto,
|
|
content_type=content_type,
|
|
encoding=encoding,
|
|
allow_pickle=allow_pickle,
|
|
)
|
|
except (ValueError, TypeError) as exc:
|
|
import json
|
|
|
|
# try to match V1
|
|
if isinstance(exc, UnicodeDecodeError):
|
|
type_str = 'value_error.unicodedecode'
|
|
elif isinstance(exc, json.JSONDecodeError):
|
|
type_str = 'value_error.jsondecode'
|
|
elif isinstance(exc, ValueError):
|
|
type_str = 'value_error'
|
|
else:
|
|
type_str = 'type_error'
|
|
|
|
# ctx is missing here, but since we've added `input` to the error, we're not pretending it's the same
|
|
error: pydantic_core.InitErrorDetails = {
|
|
# The type: ignore on the next line is to ignore the requirement of LiteralString
|
|
'type': pydantic_core.PydanticCustomError(type_str, str(exc)), # type: ignore
|
|
'loc': ('__root__',),
|
|
'input': b,
|
|
}
|
|
raise pydantic_core.ValidationError.from_exception_data(cls.__name__, [error])
|
|
return cls.model_validate(obj)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated(
|
|
'The `parse_file` method is deprecated; load the data from file, then if your data is JSON '
|
|
'use `model_validate_json`, otherwise `model_validate` instead.',
|
|
category=None,
|
|
)
|
|
def parse_file( # noqa: D102
|
|
cls,
|
|
path: str | Path,
|
|
*,
|
|
content_type: str | None = None,
|
|
encoding: str = 'utf8',
|
|
proto: DeprecatedParseProtocol | None = None,
|
|
allow_pickle: bool = False,
|
|
) -> Self:
|
|
warnings.warn(
|
|
'The `parse_file` method is deprecated; load the data from file, then if your data is JSON '
|
|
'use `model_validate_json`, otherwise `model_validate` instead.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import parse
|
|
|
|
obj = parse.load_file(
|
|
path,
|
|
proto=proto,
|
|
content_type=content_type,
|
|
encoding=encoding,
|
|
allow_pickle=allow_pickle,
|
|
)
|
|
return cls.parse_obj(obj)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated(
|
|
'The `from_orm` method is deprecated; set '
|
|
"`model_config['from_attributes']=True` and use `model_validate` instead.",
|
|
category=None,
|
|
)
|
|
def from_orm(cls, obj: Any) -> Self: # noqa: D102
|
|
warnings.warn(
|
|
'The `from_orm` method is deprecated; set '
|
|
"`model_config['from_attributes']=True` and use `model_validate` instead.",
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
if not cls.model_config.get('from_attributes', None):
|
|
raise PydanticUserError(
|
|
'You must set the config attribute `from_attributes=True` to use from_orm', code=None
|
|
)
|
|
return cls.model_validate(obj)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated('The `construct` method is deprecated; use `model_construct` instead.', category=None)
|
|
def construct(cls, _fields_set: set[str] | None = None, **values: Any) -> Self: # noqa: D102
|
|
warnings.warn(
|
|
'The `construct` method is deprecated; use `model_construct` instead.', category=PydanticDeprecatedSince20
|
|
)
|
|
return cls.model_construct(_fields_set=_fields_set, **values)
|
|
|
|
@typing_extensions.deprecated(
|
|
'The `copy` method is deprecated; use `model_copy` instead. '
|
|
'See the docstring of `BaseModel.copy` for details about how to handle `include` and `exclude`.',
|
|
category=None,
|
|
)
|
|
def copy(
|
|
self,
|
|
*,
|
|
include: AbstractSetIntStr | MappingIntStrAny | None = None,
|
|
exclude: AbstractSetIntStr | MappingIntStrAny | None = None,
|
|
update: Dict[str, Any] | None = None, # noqa UP006
|
|
deep: bool = False,
|
|
) -> Self: # pragma: no cover
|
|
"""Returns a copy of the model.
|
|
|
|
!!! warning "Deprecated"
|
|
This method is now deprecated; use `model_copy` instead.
|
|
|
|
If you need `include` or `exclude`, use:
|
|
|
|
```py
|
|
data = self.model_dump(include=include, exclude=exclude, round_trip=True)
|
|
data = {**data, **(update or {})}
|
|
copied = self.model_validate(data)
|
|
```
|
|
|
|
Args:
|
|
include: Optional set or mapping specifying which fields to include in the copied model.
|
|
exclude: Optional set or mapping specifying which fields to exclude in the copied model.
|
|
update: Optional dictionary of field-value pairs to override field values in the copied model.
|
|
deep: If True, the values of fields that are Pydantic models will be deep-copied.
|
|
|
|
Returns:
|
|
A copy of the model with included, excluded and updated fields as specified.
|
|
"""
|
|
warnings.warn(
|
|
'The `copy` method is deprecated; use `model_copy` instead. '
|
|
'See the docstring of `BaseModel.copy` for details about how to handle `include` and `exclude`.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import copy_internals
|
|
|
|
values = dict(
|
|
copy_internals._iter(
|
|
self, to_dict=False, by_alias=False, include=include, exclude=exclude, exclude_unset=False
|
|
),
|
|
**(update or {}),
|
|
)
|
|
if self.__pydantic_private__ is None:
|
|
private = None
|
|
else:
|
|
private = {k: v for k, v in self.__pydantic_private__.items() if v is not PydanticUndefined}
|
|
|
|
if self.__pydantic_extra__ is None:
|
|
extra: dict[str, Any] | None = None
|
|
else:
|
|
extra = self.__pydantic_extra__.copy()
|
|
for k in list(self.__pydantic_extra__):
|
|
if k not in values: # k was in the exclude
|
|
extra.pop(k)
|
|
for k in list(values):
|
|
if k in self.__pydantic_extra__: # k must have come from extra
|
|
extra[k] = values.pop(k)
|
|
|
|
# new `__pydantic_fields_set__` can have unset optional fields with a set value in `update` kwarg
|
|
if update:
|
|
fields_set = self.__pydantic_fields_set__ | update.keys()
|
|
else:
|
|
fields_set = set(self.__pydantic_fields_set__)
|
|
|
|
# removing excluded fields from `__pydantic_fields_set__`
|
|
if exclude:
|
|
fields_set -= set(exclude)
|
|
|
|
return copy_internals._copy_and_set_values(self, values, fields_set, extra, private, deep=deep)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated('The `schema` method is deprecated; use `model_json_schema` instead.', category=None)
|
|
def schema( # noqa: D102
|
|
cls, by_alias: bool = True, ref_template: str = DEFAULT_REF_TEMPLATE
|
|
) -> Dict[str, Any]: # noqa UP006
|
|
warnings.warn(
|
|
'The `schema` method is deprecated; use `model_json_schema` instead.', category=PydanticDeprecatedSince20
|
|
)
|
|
return cls.model_json_schema(by_alias=by_alias, ref_template=ref_template)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated(
|
|
'The `schema_json` method is deprecated; use `model_json_schema` and json.dumps instead.',
|
|
category=None,
|
|
)
|
|
def schema_json( # noqa: D102
|
|
cls, *, by_alias: bool = True, ref_template: str = DEFAULT_REF_TEMPLATE, **dumps_kwargs: Any
|
|
) -> str: # pragma: no cover
|
|
warnings.warn(
|
|
'The `schema_json` method is deprecated; use `model_json_schema` and json.dumps instead.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
import json
|
|
|
|
from .deprecated.json import pydantic_encoder
|
|
|
|
return json.dumps(
|
|
cls.model_json_schema(by_alias=by_alias, ref_template=ref_template),
|
|
default=pydantic_encoder,
|
|
**dumps_kwargs,
|
|
)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated('The `validate` method is deprecated; use `model_validate` instead.', category=None)
|
|
def validate(cls, value: Any) -> Self: # noqa: D102
|
|
warnings.warn(
|
|
'The `validate` method is deprecated; use `model_validate` instead.', category=PydanticDeprecatedSince20
|
|
)
|
|
return cls.model_validate(value)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated(
|
|
'The `update_forward_refs` method is deprecated; use `model_rebuild` instead.',
|
|
category=None,
|
|
)
|
|
def update_forward_refs(cls, **localns: Any) -> None: # noqa: D102
|
|
warnings.warn(
|
|
'The `update_forward_refs` method is deprecated; use `model_rebuild` instead.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
if localns: # pragma: no cover
|
|
raise TypeError('`localns` arguments are not longer accepted.')
|
|
cls.model_rebuild(force=True)
|
|
|
|
@typing_extensions.deprecated(
|
|
'The private method `_iter` will be removed and should no longer be used.', category=None
|
|
)
|
|
def _iter(self, *args: Any, **kwargs: Any) -> Any:
|
|
warnings.warn(
|
|
'The private method `_iter` will be removed and should no longer be used.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import copy_internals
|
|
|
|
return copy_internals._iter(self, *args, **kwargs)
|
|
|
|
@typing_extensions.deprecated(
|
|
'The private method `_copy_and_set_values` will be removed and should no longer be used.',
|
|
category=None,
|
|
)
|
|
def _copy_and_set_values(self, *args: Any, **kwargs: Any) -> Any:
|
|
warnings.warn(
|
|
'The private method `_copy_and_set_values` will be removed and should no longer be used.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import copy_internals
|
|
|
|
return copy_internals._copy_and_set_values(self, *args, **kwargs)
|
|
|
|
@classmethod
|
|
@typing_extensions.deprecated(
|
|
'The private method `_get_value` will be removed and should no longer be used.',
|
|
category=None,
|
|
)
|
|
def _get_value(cls, *args: Any, **kwargs: Any) -> Any:
|
|
warnings.warn(
|
|
'The private method `_get_value` will be removed and should no longer be used.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import copy_internals
|
|
|
|
return copy_internals._get_value(cls, *args, **kwargs)
|
|
|
|
@typing_extensions.deprecated(
|
|
'The private method `_calculate_keys` will be removed and should no longer be used.',
|
|
category=None,
|
|
)
|
|
def _calculate_keys(self, *args: Any, **kwargs: Any) -> Any:
|
|
warnings.warn(
|
|
'The private method `_calculate_keys` will be removed and should no longer be used.',
|
|
category=PydanticDeprecatedSince20,
|
|
)
|
|
from .deprecated import copy_internals
|
|
|
|
return copy_internals._calculate_keys(self, *args, **kwargs)
|
|
|
|
|
|
@overload
|
|
def create_model(
|
|
model_name: str,
|
|
/,
|
|
*,
|
|
__config__: ConfigDict | None = None,
|
|
__doc__: str | None = None,
|
|
__base__: None = None,
|
|
__module__: str = __name__,
|
|
__validators__: dict[str, Callable[..., Any]] | None = None,
|
|
__cls_kwargs__: dict[str, Any] | None = None,
|
|
**field_definitions: Any,
|
|
) -> type[BaseModel]: ...
|
|
|
|
|
|
@overload
|
|
def create_model(
|
|
model_name: str,
|
|
/,
|
|
*,
|
|
__config__: ConfigDict | None = None,
|
|
__doc__: str | None = None,
|
|
__base__: type[ModelT] | tuple[type[ModelT], ...],
|
|
__module__: str = __name__,
|
|
__validators__: dict[str, Callable[..., Any]] | None = None,
|
|
__cls_kwargs__: dict[str, Any] | None = None,
|
|
**field_definitions: Any,
|
|
) -> type[ModelT]: ...
|
|
|
|
|
|
def create_model( # noqa: C901
|
|
model_name: str,
|
|
/,
|
|
*,
|
|
__config__: ConfigDict | None = None,
|
|
__doc__: str | None = None,
|
|
__base__: type[ModelT] | tuple[type[ModelT], ...] | None = None,
|
|
__module__: str | None = None,
|
|
__validators__: dict[str, Callable[..., Any]] | None = None,
|
|
__cls_kwargs__: dict[str, Any] | None = None,
|
|
__slots__: tuple[str, ...] | None = None,
|
|
**field_definitions: Any,
|
|
) -> type[ModelT]:
|
|
"""Usage docs: https://docs.pydantic.dev/2.8/concepts/models/#dynamic-model-creation
|
|
|
|
Dynamically creates and returns a new Pydantic model, in other words, `create_model` dynamically creates a
|
|
subclass of [`BaseModel`][pydantic.BaseModel].
|
|
|
|
Args:
|
|
model_name: The name of the newly created model.
|
|
__config__: The configuration of the new model.
|
|
__doc__: The docstring of the new model.
|
|
__base__: The base class or classes for the new model.
|
|
__module__: The name of the module that the model belongs to;
|
|
if `None`, the value is taken from `sys._getframe(1)`
|
|
__validators__: A dictionary of methods that validate fields. The keys are the names of the validation methods to
|
|
be added to the model, and the values are the validation methods themselves. You can read more about functional
|
|
validators [here](https://docs.pydantic.dev/2.8/concepts/validators/#field-validators).
|
|
__cls_kwargs__: A dictionary of keyword arguments for class creation, such as `metaclass`.
|
|
__slots__: Deprecated. Should not be passed to `create_model`.
|
|
**field_definitions: Attributes of the new model. They should be passed in the format:
|
|
`<name>=(<type>, <default value>)`, `<name>=(<type>, <FieldInfo>)`, or `typing.Annotated[<type>, <FieldInfo>]`.
|
|
Any additional metadata in `typing.Annotated[<type>, <FieldInfo>, ...]` will be ignored.
|
|
|
|
Returns:
|
|
The new [model][pydantic.BaseModel].
|
|
|
|
Raises:
|
|
PydanticUserError: If `__base__` and `__config__` are both passed.
|
|
"""
|
|
if __slots__ is not None:
|
|
# __slots__ will be ignored from here on
|
|
warnings.warn('__slots__ should not be passed to create_model', RuntimeWarning)
|
|
|
|
if __base__ is not None:
|
|
if __config__ is not None:
|
|
raise PydanticUserError(
|
|
'to avoid confusion `__config__` and `__base__` cannot be used together',
|
|
code='create-model-config-base',
|
|
)
|
|
if not isinstance(__base__, tuple):
|
|
__base__ = (__base__,)
|
|
else:
|
|
__base__ = (cast('type[ModelT]', BaseModel),)
|
|
|
|
__cls_kwargs__ = __cls_kwargs__ or {}
|
|
|
|
fields = {}
|
|
annotations = {}
|
|
|
|
for f_name, f_def in field_definitions.items():
|
|
if not _fields.is_valid_field_name(f_name):
|
|
warnings.warn(f'fields may not start with an underscore, ignoring "{f_name}"', RuntimeWarning)
|
|
if isinstance(f_def, tuple):
|
|
f_def = cast('tuple[str, Any]', f_def)
|
|
try:
|
|
f_annotation, f_value = f_def
|
|
except ValueError as e:
|
|
raise PydanticUserError(
|
|
'Field definitions should be a `(<type>, <default>)`.',
|
|
code='create-model-field-definitions',
|
|
) from e
|
|
|
|
elif _typing_extra.is_annotated(f_def):
|
|
(f_annotation, f_value, *_) = typing_extensions.get_args(
|
|
f_def
|
|
) # first two input are expected from Annotated, refer to https://docs.python.org/3/library/typing.html#typing.Annotated
|
|
from .fields import FieldInfo
|
|
|
|
if not isinstance(f_value, FieldInfo):
|
|
raise PydanticUserError(
|
|
'Field definitions should be a Annotated[<type>, <FieldInfo>]',
|
|
code='create-model-field-definitions',
|
|
)
|
|
|
|
else:
|
|
f_annotation, f_value = None, f_def
|
|
|
|
if f_annotation:
|
|
annotations[f_name] = f_annotation
|
|
fields[f_name] = f_value
|
|
|
|
if __module__ is None:
|
|
f = sys._getframe(1)
|
|
__module__ = f.f_globals['__name__']
|
|
|
|
namespace: dict[str, Any] = {'__annotations__': annotations, '__module__': __module__}
|
|
if __doc__:
|
|
namespace.update({'__doc__': __doc__})
|
|
if __validators__:
|
|
namespace.update(__validators__)
|
|
namespace.update(fields)
|
|
if __config__:
|
|
namespace['model_config'] = _config.ConfigWrapper(__config__).config_dict
|
|
resolved_bases = types.resolve_bases(__base__)
|
|
meta, ns, kwds = types.prepare_class(model_name, resolved_bases, kwds=__cls_kwargs__)
|
|
if resolved_bases is not __base__:
|
|
ns['__orig_bases__'] = __base__
|
|
namespace.update(ns)
|
|
|
|
return meta(
|
|
model_name,
|
|
resolved_bases,
|
|
namespace,
|
|
__pydantic_reset_parent_namespace__=False,
|
|
_create_model_module=__module__,
|
|
**kwds,
|
|
)
|
|
|
|
|
|
__getattr__ = getattr_migration(__name__)
|