.. decorator:: dataclass_transform(*, eq_default=True, order_default=False, \

kw_only_default=False, frozen_default=False, \

field_specifiers=(), **kwargs)

:func:`dataclass <dataclasses.dataclass>`-like behavior.

transforms a class in a similar way to

:func:`@dataclasses.dataclass <dataclasses.dataclass>`.

:param bool eq_default:

Indicates whether the ``eq`` parameter is assumed to be

``True`` or ``False`` if it is omitted by the caller.

Defaults to ``True``.

:param bool order_default:

Indicates whether the ``order`` parameter is

assumed to be ``True`` or ``False`` if it is omitted by the caller.

Defaults to ``False``.

:param bool kw_only_default:

Indicates whether the ``kw_only`` parameter is

assumed to be ``True`` or ``False`` if it is omitted by the caller.

Defaults to ``False``.

:param bool frozen_default:

Indicates whether the ``frozen`` parameter is

assumed to be ``True`` or ``False`` if it is omitted by the caller.

Defaults to ``False``.

.. versionadded:: 3.12

:param field_specifiers:

Specifies a static list of supported classes

or functions that describe fields, similar to :func:`dataclasses.field`.

Defaults to ``()``.

:type field_specifiers: tuple[Callable[..., Any], ...]

:param Any \**kwargs:

Arbitrary other keyword arguments are accepted in order to allow for

possible future extensions.

Type checkers recognize the following optional parameters on field

.. list-table:: **Recognised parameters for field specifiers**

:header-rows: 1

:widths: 20 80

* - Parameter name

- Description

* - ``init``

- Indicates whether the field should be included in the

synthesized ``__init__`` method. If unspecified, ``init`` defaults to

``True``.

* - ``default``

- Provides the default value for the field.

* - ``default_factory``

- Provides a runtime callback that returns the

default value for the field. If neither ``default`` nor

``default_factory`` are specified, the field is assumed to have no

default value and must be provided a value when the class is

instantiated.

* - ``factory``

- An alias for the ``default_factory`` parameter on field specifiers.

* - ``kw_only``

- Indicates whether the field should be marked as

keyword-only. If ``True``, the field will be keyword-only. If

``False``, it will not be keyword-only. If unspecified, the value of

the ``kw_only`` parameter on the object decorated with

``dataclass_transform`` will be used, or if that is unspecified, the

value of ``kw_only_default`` on ``dataclass_transform`` will be used.

* - ``alias``

- Provides an alternative name for the field. This alternative

name is used in the synthesized ``__init__`` method.