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Title: dataclasses — Data Classes — Python 3.15.0a5 documentation

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Description: Source code: Lib/dataclasses.py This module provides a decorator and functions for automatically adding generated special methods such as__init__() and__repr__() to user-defined classes. It was ori...

Open Graph Description: Source code: Lib/dataclasses.py This module provides a decorator and functions for automatically adding generated special methods such as__init__() and__repr__() to user-defined classes. It was ori...

Opengraph URL: https://docs.python.org/3/library/dataclasses.html

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og:image:alt	Source code: Lib/dataclasses.py This module provides a decorator and functions for automatically adding generated special methods such as__init__() and__repr__() to user-defined classes. It was ori...
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Links:

	https://www.python.org/
Table of Contents	https://docs.python.org/dev/contents.html
dataclasses — Data Classes	https://docs.python.org/dev/library/dataclasses.html
Module contents	https://docs.python.org/dev/library/dataclasses.html#module-contents
Post-init processing	https://docs.python.org/dev/library/dataclasses.html#post-init-processing
Class variables	https://docs.python.org/dev/library/dataclasses.html#class-variables
Init-only variables	https://docs.python.org/dev/library/dataclasses.html#init-only-variables
Frozen instances	https://docs.python.org/dev/library/dataclasses.html#frozen-instances
Inheritance	https://docs.python.org/dev/library/dataclasses.html#inheritance
Re-ordering of keyword-only parameters in __init__()	https://docs.python.org/dev/library/dataclasses.html#re-ordering-of-keyword-only-parameters-in-init
Default factory functions	https://docs.python.org/dev/library/dataclasses.html#default-factory-functions
Mutable default values	https://docs.python.org/dev/library/dataclasses.html#mutable-default-values
Descriptor-typed fields	https://docs.python.org/dev/library/dataclasses.html#descriptor-typed-fields
warnings — Warning control	https://docs.python.org/dev/library/warnings.html
contextlib — Utilities for with-statement contexts	https://docs.python.org/dev/library/contextlib.html
Report a bug	https://docs.python.org/dev/bugs.html
Show source	https://github.com/python/cpython/blob/main/Doc/library/dataclasses.rst?plain=1
index	https://docs.python.org/dev/genindex.html
modules	https://docs.python.org/dev/py-modindex.html
next	https://docs.python.org/dev/library/contextlib.html
previous	https://docs.python.org/dev/library/warnings.html
Python	https://www.python.org/
3.15.0a5 Documentation	https://docs.python.org/dev/index.html
The Python Standard Library	https://docs.python.org/dev/library/index.html
Python Runtime Services	https://docs.python.org/dev/library/python.html
dataclasses — Data Classes	https://docs.python.org/dev/library/dataclasses.html
¶	https://docs.python.org/dev/library/dataclasses.html#module-dataclasses
Lib/dataclasses.py	https://github.com/python/cpython/tree/main/Lib/dataclasses.py
special methods	https://docs.python.org/dev/glossary.html#term-special-method
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__repr__()	https://docs.python.org/dev/reference/datamodel.html#object.__repr__
PEP 557	https://peps.python.org/pep-0557/
PEP 526	https://peps.python.org/pep-0526/
¶	https://docs.python.org/dev/library/dataclasses.html#module-contents
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
decorator	https://docs.python.org/dev/glossary.html#term-decorator
special methods	https://docs.python.org/dev/glossary.html#term-special-method
type annotation	https://docs.python.org/dev/glossary.html#term-variable-annotation
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__repr__()	https://docs.python.org/dev/reference/datamodel.html#object.__repr__
__eq__()	https://docs.python.org/dev/reference/datamodel.html#object.__eq__
__lt__()	https://docs.python.org/dev/reference/datamodel.html#object.__lt__
__le__()	https://docs.python.org/dev/reference/datamodel.html#object.__le__
__gt__()	https://docs.python.org/dev/reference/datamodel.html#object.__gt__
__ge__()	https://docs.python.org/dev/reference/datamodel.html#object.__ge__
ValueError	https://docs.python.org/dev/library/exceptions.html#ValueError
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
__hash__()	https://docs.python.org/dev/reference/datamodel.html#object.__hash__
__hash__()	https://docs.python.org/dev/reference/datamodel.html#object.__hash__
hash()	https://docs.python.org/dev/library/functions.html#hash
__hash__()	https://docs.python.org/dev/reference/datamodel.html#object.__hash__
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
object	https://docs.python.org/dev/library/functions.html#object
discussion	https://docs.python.org/dev/library/dataclasses.html#dataclasses-frozen
__setattr__()	https://docs.python.org/dev/reference/datamodel.html#object.__setattr__
__delattr__()	https://docs.python.org/dev/reference/datamodel.html#object.__delattr__
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
__match_args__	https://docs.python.org/dev/reference/datamodel.html#object.__match_args__
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
parameter	https://docs.python.org/dev/glossary.html#term-parameter
KW_ONLY	https://docs.python.org/dev/library/dataclasses.html#dataclasses.KW_ONLY
__slots__	https://docs.python.org/dev/reference/datamodel.html#object.__slots__
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
__init_subclass__()	https://docs.python.org/dev/reference/datamodel.html#object.__init_subclass__
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
gh-91126	https://github.com/python/cpython/issues/91126
overriding them	https://docs.python.org/dev/reference/datamodel.html#datamodel-note-slots
fields()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
weakref-able	https://docs.python.org/dev/library/weakref.html#weakref.ref
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.field
MISSING	https://docs.python.org/dev/library/dataclasses.html#dataclasses.MISSING
MISSING	https://docs.python.org/dev/library/dataclasses.html#dataclasses.MISSING
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__repr__()	https://docs.python.org/dev/reference/datamodel.html#object.__repr__
__hash__()	https://docs.python.org/dev/reference/datamodel.html#object.__hash__
__hash__()	https://docs.python.org/dev/reference/datamodel.html#object.__hash__
__eq__()	https://docs.python.org/dev/reference/datamodel.html#object.__eq__
__gt__()	https://docs.python.org/dev/reference/datamodel.html#object.__gt__
MappingProxyType()	https://docs.python.org/dev/library/types.html#types.MappingProxyType
Field	https://docs.python.org/dev/library/dataclasses.html#dataclasses.Field
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.Field
fields()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
field()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.field
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.InitVar
init-only	https://docs.python.org/dev/library/dataclasses.html#dataclasses-init-only-variables
fields()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__post_init__()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
Field	https://docs.python.org/dev/library/dataclasses.html#dataclasses.Field
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.asdict
copy.deepcopy()	https://docs.python.org/dev/library/copy.html#copy.deepcopy
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.astuple
copy.deepcopy()	https://docs.python.org/dev/library/copy.html#copy.deepcopy
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.make_dataclass
typing.Any	https://docs.python.org/dev/library/typing.html#typing.Any
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
__annotations__	https://docs.python.org/dev/reference/datamodel.html#object.__annotations__
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.replace
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
TypeError	https://docs.python.org/dev/library/exceptions.html#TypeError
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__post_init__()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
__post_init__()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
ValueError	https://docs.python.org/dev/library/exceptions.html#ValueError
__post_init__()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
copy.replace()	https://docs.python.org/dev/library/copy.html#copy.replace
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.is_dataclass
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.MISSING
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.KW_ONLY
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.FrozenInstanceError
__setattr__()	https://docs.python.org/dev/reference/datamodel.html#object.__setattr__
__delattr__()	https://docs.python.org/dev/reference/datamodel.html#object.__delattr__
AttributeError	https://docs.python.org/dev/library/exceptions.html#AttributeError
¶	https://docs.python.org/dev/library/dataclasses.html#post-init-processing
¶	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
__post_init__()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
replace()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.replace
¶	https://docs.python.org/dev/library/dataclasses.html#class-variables
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
PEP 526	https://peps.python.org/pep-0526/
typing.ClassVar	https://docs.python.org/dev/library/typing.html#typing.ClassVar
fields()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
¶	https://docs.python.org/dev/library/dataclasses.html#init-only-variables
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
InitVar	https://docs.python.org/dev/library/dataclasses.html#dataclasses.InitVar
InitVar	https://docs.python.org/dev/library/dataclasses.html#dataclasses.InitVar
fields()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__post_init__()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.__post_init__
fields()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.fields
Field	https://docs.python.org/dev/library/dataclasses.html#dataclasses.Field
¶	https://docs.python.org/dev/library/dataclasses.html#frozen-instances
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
__setattr__()	https://docs.python.org/dev/reference/datamodel.html#object.__setattr__
__delattr__()	https://docs.python.org/dev/reference/datamodel.html#object.__delattr__
FrozenInstanceError	https://docs.python.org/dev/library/dataclasses.html#dataclasses.FrozenInstanceError
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
¶	https://docs.python.org/dev/library/dataclasses.html#inheritance
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
object	https://docs.python.org/dev/library/functions.html#object
int	https://docs.python.org/dev/library/functions.html#int
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
¶	https://docs.python.org/dev/library/dataclasses.html#re-ordering-of-keyword-only-parameters-in-init
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
¶	https://docs.python.org/dev/library/dataclasses.html#default-factory-functions
field()	https://docs.python.org/dev/library/dataclasses.html#dataclasses.field
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
¶	https://docs.python.org/dev/library/dataclasses.html#mutable-default-values
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
ValueError	https://docs.python.org/dev/library/exceptions.html#ValueError
list	https://docs.python.org/dev/library/stdtypes.html#list
dict	https://docs.python.org/dev/library/stdtypes.html#dict
set	https://docs.python.org/dev/library/stdtypes.html#set
¶	https://docs.python.org/dev/library/dataclasses.html#descriptor-typed-fields
descriptor objects	https://docs.python.org/dev/reference/datamodel.html#descriptors
__init__()	https://docs.python.org/dev/reference/datamodel.html#object.__init__
__set__()	https://docs.python.org/dev/reference/datamodel.html#object.__set__
__get__()	https://docs.python.org/dev/reference/datamodel.html#object.__get__
@dataclass	https://docs.python.org/dev/library/dataclasses.html#dataclasses.dataclass
AttributeError	https://docs.python.org/dev/library/exceptions.html#AttributeError
Table of Contents	https://docs.python.org/dev/contents.html
dataclasses — Data Classes	https://docs.python.org/dev/library/dataclasses.html
Module contents	https://docs.python.org/dev/library/dataclasses.html#module-contents
Post-init processing	https://docs.python.org/dev/library/dataclasses.html#post-init-processing
Class variables	https://docs.python.org/dev/library/dataclasses.html#class-variables
Init-only variables	https://docs.python.org/dev/library/dataclasses.html#init-only-variables
Frozen instances	https://docs.python.org/dev/library/dataclasses.html#frozen-instances
Inheritance	https://docs.python.org/dev/library/dataclasses.html#inheritance
Re-ordering of keyword-only parameters in __init__()	https://docs.python.org/dev/library/dataclasses.html#re-ordering-of-keyword-only-parameters-in-init
Default factory functions	https://docs.python.org/dev/library/dataclasses.html#default-factory-functions
Mutable default values	https://docs.python.org/dev/library/dataclasses.html#mutable-default-values
Descriptor-typed fields	https://docs.python.org/dev/library/dataclasses.html#descriptor-typed-fields
warnings — Warning control	https://docs.python.org/dev/library/warnings.html
contextlib — Utilities for with-statement contexts	https://docs.python.org/dev/library/contextlib.html
Report a bug	https://docs.python.org/dev/bugs.html
Show source	https://github.com/python/cpython/blob/main/Doc/library/dataclasses.rst?plain=1
index	https://docs.python.org/dev/genindex.html
modules	https://docs.python.org/dev/py-modindex.html
next	https://docs.python.org/dev/library/contextlib.html
previous	https://docs.python.org/dev/library/warnings.html
Python	https://www.python.org/
3.15.0a5 Documentation	https://docs.python.org/dev/index.html
The Python Standard Library	https://docs.python.org/dev/library/index.html
Python Runtime Services	https://docs.python.org/dev/library/python.html
dataclasses — Data Classes	https://docs.python.org/dev/library/dataclasses.html
Copyright	https://docs.python.org/dev/copyright.html
History and License	https://docs.python.org/license.html
Please donate.	https://www.python.org/psf/donations/
Found a bug	https://docs.python.org/bugs.html
Sphinx	https://www.sphinx-doc.org/

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