Coverage for pydantic/dataclasses.py: 97.79%
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1"""Provide an enhanced dataclass that performs validation."""
3from __future__ import annotations as _annotations 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
5import dataclasses 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
6import sys 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
7import types 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
8from typing import TYPE_CHECKING, Any, Callable, Generic, Literal, NoReturn, TypeVar, overload 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
9from warnings import warn 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
11from typing_extensions import TypeGuard, dataclass_transform 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
13from ._internal import _config, _decorators, _namespace_utils, _typing_extra 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
14from ._internal import _dataclasses as _pydantic_dataclasses 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
15from ._migration import getattr_migration 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
16from .config import ConfigDict 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
17from .errors import PydanticUserError 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
18from .fields import Field, FieldInfo, PrivateAttr 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
20if TYPE_CHECKING: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
21 from ._internal._dataclasses import PydanticDataclass
22 from ._internal._namespace_utils import MappingNamespace
24__all__ = 'dataclass', 'rebuild_dataclass' 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
26_T = TypeVar('_T') 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
28if sys.version_info >= (3, 10): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
30 @dataclass_transform(field_specifiers=(dataclasses.field, Field, PrivateAttr)) 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
31 @overload 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
32 def dataclass( 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
33 *,
34 init: Literal[False] = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
35 repr: bool = True, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
36 eq: bool = True, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
37 order: bool = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
38 unsafe_hash: bool = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
39 frozen: bool = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
40 config: ConfigDict | type[object] | None = None, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
41 validate_on_init: bool | None = None, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
42 kw_only: bool = ..., 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
43 slots: bool = ..., 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
44 ) -> Callable[[type[_T]], type[PydanticDataclass]]: # type: ignore 1defghaklmnoJKLMrstuv
45 ...
47 @dataclass_transform(field_specifiers=(dataclasses.field, Field, PrivateAttr)) 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
48 @overload 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
49 def dataclass( 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
50 _cls: type[_T], # type: ignore 1defghaklmnoJKLMrstuv
51 *,
52 init: Literal[False] = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
53 repr: bool = True, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
54 eq: bool = True, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
55 order: bool = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
56 unsafe_hash: bool = False, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
57 frozen: bool | None = None, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
58 config: ConfigDict | type[object] | None = None, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
59 validate_on_init: bool | None = None, 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
60 kw_only: bool = ..., 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
61 slots: bool = ..., 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
62 ) -> type[PydanticDataclass]: ... 1defghaklmnoJKLMrstuv
64else:
66 @dataclass_transform(field_specifiers=(dataclasses.field, Field, PrivateAttr)) 1DEwFGPHI
67 @overload 1DEwFGPHI
68 def dataclass( 1DEwFGPHI
69 *,
70 init: Literal[False] = False, 1DEwFGPHI
71 repr: bool = True, 1DEwFGPHI
72 eq: bool = True, 1DEwFGPHI
73 order: bool = False, 1DEwFGPHI
74 unsafe_hash: bool = False, 1DEwFGPHI
75 frozen: bool | None = None, 1DEwFGPHI
76 config: ConfigDict | type[object] | None = None, 1DEwFGPHI
77 validate_on_init: bool | None = None, 1DEwFGPHI
78 ) -> Callable[[type[_T]], type[PydanticDataclass]]: # type: ignore 1w
79 ...
81 @dataclass_transform(field_specifiers=(dataclasses.field, Field, PrivateAttr)) 1DEwFGPHI
82 @overload 1DEwFGPHI
83 def dataclass( 1DEwFGPHI
84 _cls: type[_T], # type: ignore 1w
85 *,
86 init: Literal[False] = False, 1DEwFGPHI
87 repr: bool = True, 1DEwFGPHI
88 eq: bool = True, 1DEwFGPHI
89 order: bool = False, 1DEwFGPHI
90 unsafe_hash: bool = False, 1DEwFGPHI
91 frozen: bool | None = None, 1DEwFGPHI
92 config: ConfigDict | type[object] | None = None, 1DEwFGPHI
93 validate_on_init: bool | None = None, 1DEwFGPHI
94 ) -> type[PydanticDataclass]: ... 1w
97@dataclass_transform(field_specifiers=(dataclasses.field, Field, PrivateAttr)) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
98def dataclass( 1DEbcxydefghFGijzAklmnoPNOJKLMHIpqBCrstuv
99 _cls: type[_T] | None = None,
100 *,
101 init: Literal[False] = False,
102 repr: bool = True,
103 eq: bool = True,
104 order: bool = False,
105 unsafe_hash: bool = False,
106 frozen: bool | None = None,
107 config: ConfigDict | type[object] | None = None,
108 validate_on_init: bool | None = None,
109 kw_only: bool = False,
110 slots: bool = False,
111) -> Callable[[type[_T]], type[PydanticDataclass]] | type[PydanticDataclass]:
112 """!!! abstract "Usage Documentation"
113 [`dataclasses`](../concepts/dataclasses.md)
115 A decorator used to create a Pydantic-enhanced dataclass, similar to the standard Python `dataclass`,
116 but with added validation.
118 This function should be used similarly to `dataclasses.dataclass`.
120 Args:
121 _cls: The target `dataclass`.
122 init: Included for signature compatibility with `dataclasses.dataclass`, and is passed through to
123 `dataclasses.dataclass` when appropriate. If specified, must be set to `False`, as pydantic inserts its
124 own `__init__` function.
125 repr: A boolean indicating whether to include the field in the `__repr__` output.
126 eq: Determines if a `__eq__` method should be generated for the class.
127 order: Determines if comparison magic methods should be generated, such as `__lt__`, but not `__eq__`.
128 unsafe_hash: Determines if a `__hash__` method should be included in the class, as in `dataclasses.dataclass`.
129 frozen: Determines if the generated class should be a 'frozen' `dataclass`, which does not allow its
130 attributes to be modified after it has been initialized. If not set, the value from the provided `config` argument will be used (and will default to `False` otherwise).
131 config: The Pydantic config to use for the `dataclass`.
132 validate_on_init: A deprecated parameter included for backwards compatibility; in V2, all Pydantic dataclasses
133 are validated on init.
134 kw_only: Determines if `__init__` method parameters must be specified by keyword only. Defaults to `False`.
135 slots: Determines if the generated class should be a 'slots' `dataclass`, which does not allow the addition of
136 new attributes after instantiation.
138 Returns:
139 A decorator that accepts a class as its argument and returns a Pydantic `dataclass`.
141 Raises:
142 AssertionError: Raised if `init` is not `False` or `validate_on_init` is `False`.
143 """
144 assert init is False, 'pydantic.dataclasses.dataclass only supports init=False' 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
145 assert validate_on_init is not False, 'validate_on_init=False is no longer supported' 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
147 if sys.version_info >= (3, 10): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
148 kwargs = {'kw_only': kw_only, 'slots': slots} 1bcxydefghaijzAklmnoNOJKLMpqBCrstuv
149 else:
150 kwargs = {} 1DEwFGPHI
152 def make_pydantic_fields_compatible(cls: type[Any]) -> None: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
153 """Make sure that stdlib `dataclasses` understands `Field` kwargs like `kw_only`
154 To do that, we simply change
155 `x: int = pydantic.Field(..., kw_only=True)`
156 into
157 `x: int = dataclasses.field(default=pydantic.Field(..., kw_only=True), kw_only=True)`
158 """
159 for annotation_cls in cls.__mro__: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
160 annotations: dict[str, Any] = getattr(annotation_cls, '__annotations__', {}) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
161 for field_name in annotations: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
162 field_value = getattr(cls, field_name, None) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
163 # Process only if this is an instance of `FieldInfo`.
164 if not isinstance(field_value, FieldInfo): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
165 continue 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
167 # Initialize arguments for the standard `dataclasses.field`.
168 field_args: dict = {'default': field_value} 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
170 # Handle `kw_only` for Python 3.10+
171 if sys.version_info >= (3, 10) and field_value.kw_only: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
172 field_args['kw_only'] = True 1bcxydefghaijzAklmnopqBCrstuv
174 # Set `repr` attribute if it's explicitly specified to be not `True`.
175 if field_value.repr is not True: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
176 field_args['repr'] = field_value.repr 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
178 setattr(cls, field_name, dataclasses.field(**field_args)) 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
179 # In Python 3.9, when subclassing, information is pulled from cls.__dict__['__annotations__']
180 # for annotations, so we must make sure it's initialized before we add to it.
181 if cls.__dict__.get('__annotations__') is None: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
182 cls.__annotations__ = {} 1DEwFGHI
183 cls.__annotations__[field_name] = annotations[field_name] 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
185 def create_dataclass(cls: type[Any]) -> type[PydanticDataclass]: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
186 """Create a Pydantic dataclass from a regular dataclass.
188 Args:
189 cls: The class to create the Pydantic dataclass from.
191 Returns:
192 A Pydantic dataclass.
193 """
194 from ._internal._utils import is_model_class 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
196 if is_model_class(cls): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
197 raise PydanticUserError( 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
198 f'Cannot create a Pydantic dataclass from {cls.__name__} as it is already a Pydantic model',
199 code='dataclass-on-model',
200 )
202 original_cls = cls 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
204 # we warn on conflicting config specifications, but only if the class doesn't have a dataclass base
205 # because a dataclass base might provide a __pydantic_config__ attribute that we don't want to warn about
206 has_dataclass_base = any(dataclasses.is_dataclass(base) for base in cls.__bases__) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
207 if not has_dataclass_base and config is not None and hasattr(cls, '__pydantic_config__'): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
208 warn( 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
209 f'`config` is set via both the `dataclass` decorator and `__pydantic_config__` for dataclass {cls.__name__}. '
210 f'The `config` specification from `dataclass` decorator will take priority.',
211 category=UserWarning,
212 stacklevel=2,
213 )
215 # if config is not explicitly provided, try to read it from the type
216 config_dict = config if config is not None else getattr(cls, '__pydantic_config__', None) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
217 config_wrapper = _config.ConfigWrapper(config_dict) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
218 decorators = _decorators.DecoratorInfos.build(cls) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
220 # Keep track of the original __doc__ so that we can restore it after applying the dataclasses decorator
221 # Otherwise, classes with no __doc__ will have their signature added into the JSON schema description,
222 # since dataclasses.dataclass will set this as the __doc__
223 original_doc = cls.__doc__ 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
225 if _pydantic_dataclasses.is_builtin_dataclass(cls): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
226 # Don't preserve the docstring for vanilla dataclasses, as it may include the signature
227 # This matches v1 behavior, and there was an explicit test for it
228 original_doc = None 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
230 # We don't want to add validation to the existing std lib dataclass, so we will subclass it
231 # If the class is generic, we need to make sure the subclass also inherits from Generic
232 # with all the same parameters.
233 bases = (cls,) 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
234 if issubclass(cls, Generic): 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
235 generic_base = Generic[cls.__parameters__] # type: ignore 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
236 bases = bases + (generic_base,) 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
237 cls = types.new_class(cls.__name__, bases) 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
239 make_pydantic_fields_compatible(cls) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
241 # Respect frozen setting from dataclass constructor and fallback to config setting if not provided
242 if frozen is not None: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
243 frozen_ = frozen 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
244 if config_wrapper.frozen: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
245 # It's not recommended to define both, as the setting from the dataclass decorator will take priority.
246 warn( 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
247 f'`frozen` is set via both the `dataclass` decorator and `config` for dataclass {cls.__name__!r}.'
248 'This is not recommended. The `frozen` specification on `dataclass` will take priority.',
249 category=UserWarning,
250 stacklevel=2,
251 )
252 else:
253 frozen_ = config_wrapper.frozen or False 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
255 cls = dataclasses.dataclass( # type: ignore[call-overload] 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
256 cls,
257 # the value of init here doesn't affect anything except that it makes it easier to generate a signature
258 init=True,
259 repr=repr,
260 eq=eq,
261 order=order,
262 unsafe_hash=unsafe_hash,
263 frozen=frozen_,
264 **kwargs,
265 )
267 # This is an undocumented attribute to distinguish stdlib/Pydantic dataclasses.
268 # It should be set as early as possible:
269 cls.__is_pydantic_dataclass__ = True 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
271 cls.__pydantic_decorators__ = decorators # type: ignore 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
272 cls.__doc__ = original_doc 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
273 cls.__module__ = original_cls.__module__ 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
274 cls.__qualname__ = original_cls.__qualname__ 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
275 cls.__pydantic_complete__ = False # `complete_dataclass` will set it to `True` if successful. 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
276 # TODO `parent_namespace` is currently None, but we could do the same thing as Pydantic models:
277 # fetch the parent ns using `parent_frame_namespace` (if the dataclass was defined in a function),
278 # and possibly cache it (see the `__pydantic_parent_namespace__` logic for models).
279 _pydantic_dataclasses.complete_dataclass(cls, config_wrapper, raise_errors=False) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
280 return cls 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
282 return create_dataclass if _cls is None else create_dataclass(_cls) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
285__getattr__ = getattr_migration(__name__) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
287if sys.version_info < (3, 11): 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
288 # Monkeypatch dataclasses.InitVar so that typing doesn't error if it occurs as a type when evaluating type hints
289 # Starting in 3.11, typing.get_type_hints will not raise an error if the retrieved type hints are not callable.
291 def _call_initvar(*args: Any, **kwargs: Any) -> NoReturn: 1DEbcwaFGijPNHIpq
292 """This function does nothing but raise an error that is as similar as possible to what you'd get
293 if you were to try calling `InitVar[int]()` without this monkeypatch. The whole purpose is just
294 to ensure typing._type_check does not error if the type hint evaluates to `InitVar[<parameter>]`.
295 """
296 raise TypeError("'InitVar' object is not callable") 1DEbcwaFGijHIpq
298 dataclasses.InitVar.__call__ = _call_initvar 1DEbcwaFGijPNHIpq
301def rebuild_dataclass( 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
302 cls: type[PydanticDataclass],
303 *,
304 force: bool = False,
305 raise_errors: bool = True,
306 _parent_namespace_depth: int = 2,
307 _types_namespace: MappingNamespace | None = None,
308) -> bool | None:
309 """Try to rebuild the pydantic-core schema for the dataclass.
311 This may be necessary when one of the annotations is a ForwardRef which could not be resolved during
312 the initial attempt to build the schema, and automatic rebuilding fails.
314 This is analogous to `BaseModel.model_rebuild`.
316 Args:
317 cls: The class to rebuild the pydantic-core schema for.
318 force: Whether to force the rebuilding of the schema, defaults to `False`.
319 raise_errors: Whether to raise errors, defaults to `True`.
320 _parent_namespace_depth: The depth level of the parent namespace, defaults to 2.
321 _types_namespace: The types namespace, defaults to `None`.
323 Returns:
324 Returns `None` if the schema is already "complete" and rebuilding was not required.
325 If rebuilding _was_ required, returns `True` if rebuilding was successful, otherwise `False`.
326 """
327 if not force and cls.__pydantic_complete__: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
328 return None 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
330 for attr in ('__pydantic_core_schema__', '__pydantic_validator__', '__pydantic_serializer__'): 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
331 if attr in cls.__dict__: 331 ↛ 330line 331 didn't jump to line 330 because the condition on line 331 was always true1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
332 # Deleting the validator/serializer is necessary as otherwise they can get reused in
333 # pydantic-core. Same applies for the core schema that can be reused in schema generation.
334 delattr(cls, attr) 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
336 cls.__pydantic_complete__ = False 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
338 if _types_namespace is not None: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
339 rebuild_ns = _types_namespace 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
340 elif _parent_namespace_depth > 0: 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
341 rebuild_ns = _typing_extra.parent_frame_namespace(parent_depth=_parent_namespace_depth, force=True) or {} 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
342 else:
343 rebuild_ns = {} 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
345 ns_resolver = _namespace_utils.NsResolver( 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
346 parent_namespace=rebuild_ns,
347 )
349 return _pydantic_dataclasses.complete_dataclass( 1DEbcxydefghwaFGijzAklmnoHIpqBCrstuv
350 cls,
351 _config.ConfigWrapper(cls.__pydantic_config__, check=False),
352 raise_errors=raise_errors,
353 ns_resolver=ns_resolver,
354 # We could provide a different config instead (with `'defer_build'` set to `True`)
355 # of this explicit `_force_build` argument, but because config can come from the
356 # decorator parameter or the `__pydantic_config__` attribute, `complete_dataclass`
357 # will overwrite `__pydantic_config__` with the provided config above:
358 _force_build=True,
359 )
362def is_pydantic_dataclass(class_: type[Any], /) -> TypeGuard[type[PydanticDataclass]]: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
363 """Whether a class is a pydantic dataclass.
365 Args:
366 class_: The class.
368 Returns:
369 `True` if the class is a pydantic dataclass, `False` otherwise.
370 """
371 try: 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
372 return '__is_pydantic_dataclass__' in class_.__dict__ and dataclasses.is_dataclass(class_) 1DEbcxydefghwaFGijzAklmnoPNOJKLMHIpqBCrstuv
373 except AttributeError:
374 return False