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[3.13] gh-123935: Fix typo in _get_slots in dataclasses.py (GH-123941) (#123991)

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gh-123935: Fix typo in `_get_slots` in `dataclasses.py` (GH-123941)
(cherry picked from commit ac918ccad7)

Co-authored-by: sobolevn <mail@sobolevn.me>
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Miss Islington (bot) 2024-12-03 17:17:25 +01:00 • committed by GitHub
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commit ae3f347dc0
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3 changed files with 22 additions and 1 deletions
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19
Lib/test/test_dataclasses/__init__.py
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@ -3707,6 +3707,25 @@ class TestSlots(unittest.TestCase):
self.assertEqual(A().__dict__, {})
A()
@support.cpython_only
def test_dataclass_slot_dict_ctype(self):
# https://github.com/python/cpython/issues/123935
from test.support import import_helper
# Skips test if `_testcapi` is not present:
_testcapi = import_helper.import_module('_testcapi')
@dataclass(slots=True)
class HasDictOffset(_testcapi.HeapCTypeWithDict):
__dict__: dict = {}
self.assertNotEqual(_testcapi.HeapCTypeWithDict.__dictoffset__, 0)
self.assertEqual(HasDictOffset.__slots__, ())
@dataclass(slots=True)
class DoesNotHaveDictOffset(_testcapi.HeapCTypeWithWeakref):
__dict__: dict = {}
self.assertEqual(_testcapi.HeapCTypeWithWeakref.__dictoffset__, 0)
self.assertEqual(DoesNotHaveDictOffset.__slots__, ('__dict__',))
@support.cpython_only
def test_slots_with_wrong_init_subclass(self):
# TODO: This test is for a kinda-buggy behavior.