Bump ruff up to latest

Author: Tinche

HISTORY.md

@@ -21,6 +21,7 @@ Our backwards-compatibility policy can be found [here](https://github.com/python
 - Fix the `detailed_validation` parameter being passed under the wrong name in {func}`namedtuple_dict_structure_factory <cattrs.cols.namedtuple_dict_structure_factory>`, causing it to be silently ignored.
   ([#723](https://github.com/python-attrs/cattrs/pull/723))
 - _cattrs_ is now autoformatted using Ruff.
+  ([#732](https://github.com/python-attrs/cattrs/pull/732))
 
 ## 26.1.0 (2026-02-18)
 

pyproject.toml

@@ -144,7 +144,7 @@ select = [
     "I",   # isort
 ]
 ignore = [
-    "E501",   # line length is handled by black
+    "E501",   # line length is handled by the formatter
     "RUF001", # leave my smart characters alone
     "S101",   # assert
     "S307",   # hands off my eval
@@ -157,7 +157,6 @@ ignore = [
     "UP006",  # We support old typing constructs at runtime
     "UP007",  # We support old typing constructs at runtime
     "UP035",  # We support old typing constructs at runtime
-    "UP038",  # Dubious rule
     "UP045",  # We support old typing constructs at runtime
 ]
 

tests/test_disambiguators.py

@@ -162,7 +162,7 @@ class A:
 def test_disambiguation(cl_and_vals_a, cl_and_vals_b):
     """Disambiguation should work when there are unique required fields."""
     cl_a, vals_a, kwargs_a = cl_and_vals_a
-    cl_b, vals_b, kwargs_b = cl_and_vals_b
+    cl_b, _, _ = cl_and_vals_b
     c = Converter()
 
     req_a = {a.name for a in fields(cl_a)}

tests/test_generics.py

@@ -175,7 +175,7 @@ def test_raises_if_no_generic_params_supplied(
 
     with pytest.raises(
         StructureHandlerNotFoundError,
-        match="Unsupported type: ~T. Register a structure hook for it.|Missing type for generic argument T, specify it when structuring.",
+        match=r"Unsupported type: ~T. Register a structure hook for it.|Missing type for generic argument T, specify it when structuring.",
     ) as exc:
         converter.structure(asdict(data), TClass)
 

tests/test_structure.py

@@ -211,7 +211,7 @@ def test_structuring_dicts_opts(dict_and_type, data):
 @given(dicts_of_primitives)
 def test_stringifying_dicts(dict_and_type):
     converter = BaseConverter()
-    d, t = dict_and_type
+    d, _ = dict_and_type
 
     converted = converter.structure(d, Dict[str, str])
 
@@ -267,7 +267,7 @@ def test_structuring_lists_of_opt(list_and_type, detailed_validation: bool) -> N
 def test_stringifying_lists_of_opt(list_and_type):
     """Test structuring Optional primitive types into strings."""
     converter = BaseConverter()
-    lst, t = list_and_type
+    lst, _ = list_and_type
 
     lst.append(None)