Nov 13, 2024 · Nov 13, 2024
diff --git a/pydantic/_internal/_dataclasses.py b/pydantic/_internal/_dataclasses.py
 from ._namespace_utils import NsResolver
 from ._schema_generation_shared import CallbackGetCoreSchemaHandler
 from ._signature import generate_pydantic_signature
 from ._utils import LazyClassAttribute

 if typing.TYPE_CHECKING:
    from _typeshed import DataclassInstance as StandardDataclass
        typevars_map=typevars_map,
    )

    # This needs to be called before we change the __init__
    sig = generate_pydantic_signature(
        init=original_init,
        fields=cls.__pydantic_fields__,  # type: ignore
        populate_by_name=config_wrapper.populate_by_name,
        extra=config_wrapper.extra,
        is_dataclass=True,
    # set __signature__ attr only for model class, but not for its instances
    # (because instances can define `__call__`, and `inspect.signature` shouldn't
    # use the `__signature__` attribute and instead generate from `__call__`).
    cls.__signature__ = LazyClassAttribute(
        '__signature__',
        partial(
            generate_pydantic_signature,
            # It's' important that we reference the original_init here
            init=original_init,
            fields=cls.__pydantic_fields__,  # type: ignore
            populate_by_name=config_wrapper.populate_by_name,
            extra=config_wrapper.extra,
            is_dataclass=True,
        ),
    )

    cls.__signature__ = sig  # type: ignore
    get_core_schema = getattr(cls, '__get_pydantic_core_schema__', None)
    try:
        if get_core_schema:
Original file line number	Diff line number	Diff line change
Expand Up		@@ -27,6 +27,7 @@
		from ._namespace_utils import NsResolver
		from ._schema_generation_shared import CallbackGetCoreSchemaHandler
		from ._signature import generate_pydantic_signature
		from ._utils import LazyClassAttribute

		if typing.TYPE_CHECKING:
		from _typeshed import DataclassInstance as StandardDataclass
Expand DownExpand Up		@@ -142,16 +143,21 @@ def __init__(__dataclass_self__: PydanticDataclass, args: Any, *kwargs: Any) -
		typevars_map=typevars_map,
		)

		# This needs to be called before we change the __init__
		sig = generate_pydantic_signature(
		init=original_init,
		fields=cls.__pydantic_fields__, # type: ignore
		populate_by_name=config_wrapper.populate_by_name,
		extra=config_wrapper.extra,
		is_dataclass=True,
		# set __signature__ attr only for model class, but not for its instances
		# (because instances can define `__call__`, and `inspect.signature` shouldn't
		# use the `__signature__` attribute and instead generate from `__call__`).
		cls.__signature__ = LazyClassAttribute(
		'__signature__',
		partial(
		generate_pydantic_signature,
		# It's' important that we reference the original_init here
		init=original_init,
		fields=cls.__pydantic_fields__, # type: ignore
		populate_by_name=config_wrapper.populate_by_name,
		extra=config_wrapper.extra,
		is_dataclass=True,
		),
		)

		cls.__signature__ = sig # type: ignore
		get_core_schema = getattr(cls, '__get_pydantic_core_schema__', None)
		try:
		if get_core_schema:
Expand Down