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Issues list

3.14 changes annotations behaviour for dataclasses.make_dataclass 3.14 bugs and security fixes stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#134370 opened May 20, 2025 by rogerbinns
6
gh-133956 fix bug where ClassVar string annotation in @dataclass caused incorrect __init__ generation awaiting changes topic-dataclasses
#134073 opened May 15, 2025 by dzherb Loading…
@ericvsmith
13
dataclasses: Synthetic __init__ method on dataclass has broken ClassVar annotation under some conditions. stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#133956 opened May 12, 2025 by emcd
12
gh-144162: Allow for subclasses of a dataclass to define required fields when a parent has defined optional fields awaiting core review topic-dataclasses
#133168 opened Apr 29, 2025 by LukeGrochocki Loading…
6
slotted dataclasses not calling descriptor field __set__ stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#132946 opened Apr 25, 2025 by thejcannon
@sobolevn
7
Dataclasses erroring when descriptor has mutable default stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#132559 opened Apr 15, 2025 by thejcannon
@ericvsmith
10
Incorrect __qualname__ in slotted dataclasses in __init_subclass__ stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#129915 opened Feb 9, 2025 by thejcannon
1
1
Breaking change of dataclasses.dataclass comparison semantics in 3.13+ 3.13 bugs and security fixes 3.14 bugs and security fixes stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#128294 opened Dec 27, 2024 by daskol
@sobolevn
11
dataclasses fail to unpickle when there is an object cycle with a custom __hash__ function topic-dataclasses type-bug An unexpected behavior, bug, or error
#125004 opened Oct 5, 2024 by charles-cooper
1
2
pickle.loads will crash with self-references inside a custom hash function extension-modules C modules in the Modules dir stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#124937 opened Oct 3, 2024 by charles-cooper
24
Improve UX for mocking dataclasses that are problematic to instantiate topic-dataclasses type-feature A feature request or enhancement
#124176 opened Sep 17, 2024 by ncoghlan
@sobolevn
6
Add examples for repr=... usage in dataclasses.rst awaiting review docs Documentation in the Doc dir skip issue skip news topic-dataclasses
#123118 opened Aug 18, 2024 by egorsmth Loading…
16
gh-89529: disallow default_factory for fields in dataclasses without __init__ awaiting review stale Stale PR or inactive for long period of time. topic-dataclasses
#123070 opened Aug 16, 2024 by picnixz • Draft
10
dataclass overriding a property in the parent class is broken stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#121354 opened Jul 3, 2024 by marksandler2
@sobolevn
11
dataclass(a=nan) == dataclass(a=nan) change in truthnes between 3.12 and 3.13 topic-dataclasses type-bug An unexpected behavior, bug, or error
#120645 opened Jun 17, 2024 by hroncok
@ericvsmith
10
Add dataclass_factory argument to dataclasses.make_dataclass for custom dataclass transformation support topic-dataclasses type-feature A feature request or enhancement
#118974 opened May 12, 2024 by XuehaiPan
2
Processing of fields in dataclasses is inconsistent with MRO stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#108611 opened Aug 29, 2023 by eltoder
2 tasks done
@ericvsmith
3
copy fails on collections.OrderedDict dataclass with required args 3.11 only security fixes 3.12 only security fixes 3.13 bugs and security fixes stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#105736 opened Jun 13, 2023 by ringohoffman
@ericsnowcurrently @rhettinger
9
Dataclasses - Improve the performance of _dataclass_{get,set}state 3.13 bugs and security fixes performance Performance or resource usage stdlib Python modules in the Lib dir topic-dataclasses type-feature A feature request or enhancement
#103032 opened Mar 25, 2023 by sobolevn
@sobolevn
7
Add a Dataclass abstract base class for instance checking and type annotations stdlib Python modules in the Lib dir topic-dataclasses topic-typing type-feature A feature request or enhancement
#102699 opened Mar 14, 2023 by NeilGirdhar
15
Dataclass descriptor behavior inconsistent stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#102646 opened Mar 13, 2023 by ikonst
4
Order of non-default dataclass fields when some fields are @property. stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#102559 opened Mar 9, 2023 by Nuno-Mota
@ericvsmith
7
Sharp edge in dataclass inheritance stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#102546 opened Mar 8, 2023 by hauntsaninja
@ericvsmith
3
contextlib.contextmanager raises dataclasses.FrozenInstanceError when handling a frozen dataclass exception stdlib Python modules in the Lib dir topic-dataclasses type-bug An unexpected behavior, bug, or error
#99856 opened Nov 28, 2022 by mattclay
14
Update __dataclass_params__ to track actual changes made by decorator stdlib Python modules in the Lib dir topic-dataclasses type-feature A feature request or enhancement
#99713 opened Nov 23, 2022 by ethanfurman
@ericvsmith
3
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