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python-attrs/attrs
Extending attrs-generated `__eq__`

Hi, I fear that there is probably a super obvious answer to this question, but I somehow cannot wrap my head around it: is there any way how I can extend the attrs-generated __eq__ method, similar to how ...
  • AdrianSosic
  • 1
  • Opened 
    5 hours ago
  • #1452

python-attrs/attrs
PEP 749 support

attrs doesn t currently support PEP 749 annotations. On Python 3.14, this works: class A: b: B class B: pass If we try using attrs, it doesn t: from attrs import define @define class A: ...
  • Tinche
  • Opened 
    yesterday
  • #1450

python-attrs/attrs
All Mypy tests fail on 3.14

All dependencies now install on 3.14, however the tests don t pass and it s looking kinda wild: /Users/hynek/FOSS/attrs/tests/test_mypy.yml:1487: E pytest_mypy_plugins.utils.TypecheckAssertionError: ...
  • hynek
  • 1
  • Opened 
    22 days ago
  • #1443

python-attrs/attrs
include_subsclasses fails when a rename override is used in the parent class

This examples should clairfy the issue: from attrs import define, field from cattrs import Converter from cattrs.gen import make_dict_structure_fn, make_dict_unstructure_fn, override from cattrs.strategies ...
  • luca-penasa
  • 1
  • Opened 
    on Jun 27
  • #1438

python-attrs/attrs
[Feature Request] Add `on_change` similar to `on_setattr`, but called after updating the instance.

I have been trying to implement a reactive change notification system on top of attrs using on_setattr handlers. However, on_setattr handlers are called before the value is assigned, in order to allow ...
  • burnpanck
  • 8
  • Opened 
    on Jun 25
  • #1437

python-attrs/attrs
slotted generic classes are missing __orig_class__

Minimal repro: import attrs @attrs.define class Bar[K, V]: key: K value: V y = Bar[str, int]( hello , 123) get_args(y.__orig_class__) # AttributeError: Bar object has no attribute __orig_class__ ...
  • chansoo-google
  • 1
  • Opened 
    on Jun 25
  • #1436

python-attrs/attrs
Mypy issue when using classmethods as converters

Hi, I just noticed a typing problem when using factory classmethods as converters. The following code works properly with mypy when calling the constructor directly, but causes problems when calling the ...
  • AdrianSosic
  • 2
  • Opened 
    on Jun 2
  • #1435

python-attrs/attrs
cached_property tests fail on Python 3.14

Currently two test fail on 3.14: FAILED tests/test_make.py::TestClassBuilder::test_no_references_to_original_when_using_cached_property - AssertionError: assert [ class tests.test_make.TestClassBuilder.test_no_references_to_original_when_using_cached_property. ...
  • hynek
  • 8
  • Opened 
    on May 20
  • #1431

python-attrs/attrs
Defaults are passed to `__attrs_pre_init__` instead of the init values themselves

The documentation says: If __attrs_pre_init__ takes more than the self argument, the attrs-generated __init__ will call it with the same arguments it received itself. However, if those attributes are ...
  • redruin1
  • Opened 
    on Apr 18
  • #1427

python-attrs/attrs
Can only populate attrs classes with `_CountingAttr` instances

A user might want to use attributes from an already @defined class to populate a new attrs class. However, _ClassBuilder expects all given attributes to be instances of _CountingAttr instead of Attribute ...
  • redruin1
  • 1
  • Opened 
    on Apr 6
  • #1424
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