diff --git a/tests/expr_and_series/dt/ordinal_day_test.py b/tests/expr_and_series/dt/ordinal_day_test.py
index 44db1d3dc..5f8d69d6b 100644
--- a/tests/expr_and_series/dt/ordinal_day_test.py
+++ b/tests/expr_and_series/dt/ordinal_day_test.py
@@ -38,5 +38,7 @@ def test_ordinal_day(dates: datetime) -> None:
     except ImportError:
         pass
     else:
-        result_pl = nw.from_native(pl.Series([dates]), series_only=True).dt.ordinal_day()[0]
+        result_pl = nw.from_native(pl.Series([dates]), series_only=True).dt.ordinal_day()[
+            0
+        ]
         assert result_pl == result_pd
diff --git a/tests/expr_and_series/is_nan_test.py b/tests/expr_and_series/is_nan_test.py
index 2dd79ed93..4b0459f3b 100644
--- a/tests/expr_and_series/is_nan_test.py
+++ b/tests/expr_and_series/is_nan_test.py
@@ -52,10 +52,9 @@ def test_nan(constructor: Constructor) -> None:
 
     if "polars_lazy" in str(constructor) and os.environ.get("NARWHALS_POLARS_GPU", False):
         from polars.exceptions import ComputeError
-        context = (
-            pytest.raises(
-                ComputeError, match="NAN is not supported in a Non-floating point type column"
-            )
+
+        context = pytest.raises(
+            ComputeError, match="NAN is not supported in a Non-floating point type column"
         )
     else:
         context = does_not_raise()
@@ -105,9 +104,11 @@ def test_nan_non_float(constructor: Constructor, request: pytest.FixtureRequest)
     exc = NwInvalidOperationError
     if "polars" in str(constructor):
         from polars.exceptions import InvalidOperationError as PlInvalidOperationError
+
         exc = PlInvalidOperationError
     elif "pyarrow_table" in str(constructor):
         from pyarrow.lib import ArrowNotImplementedError
+
         exc = ArrowNotImplementedError
 
     with pytest.raises(exc):
@@ -123,9 +124,11 @@ def test_nan_non_float_series(constructor_eager: ConstructorEager) -> None:
     exc = NwInvalidOperationError
     if "polars" in str(constructor_eager):
         from polars.exceptions import InvalidOperationError as PlInvalidOperationError
+
         exc = PlInvalidOperationError
     elif "pyarrow_table" in str(constructor_eager):
         from pyarrow.lib import ArrowNotImplementedError
+
         exc = ArrowNotImplementedError
 
     with pytest.raises(exc):
diff --git a/tests/frame/explode_test.py b/tests/frame/explode_test.py
index 4a77fc3fb..0af4d6af9 100644
--- a/tests/frame/explode_test.py
+++ b/tests/frame/explode_test.py
@@ -117,6 +117,7 @@ def test_explode_shape_error(
     expected_exceptions = (ShapeError,)
     if "polars" in str(constructor):
         from polars.exceptions import ShapeError as PlShapeError
+
         expected_exceptions = expected_exceptions + (PlShapeError,)
     with pytest.raises(
         expected_exceptions,
@@ -143,6 +144,7 @@ def test_explode_invalid_operation_error(
     expected_exceptions = (InvalidOperationError,)
     if "polars" in str(constructor):
         from polars.exceptions import InvalidOperationError as PlInvalidOperationError
+
         expected_exceptions = expected_exceptions + (PlInvalidOperationError,)
     with pytest.raises(
         expected_exceptions,
diff --git a/tests/frame/filter_test.py b/tests/frame/filter_test.py
index 78014d0ab..3b63f017f 100644
--- a/tests/frame/filter_test.py
+++ b/tests/frame/filter_test.py
@@ -46,6 +46,7 @@ def test_filter_raise_on_shape_mismatch(constructor: Constructor) -> None:
     expected_exceptions = (LengthChangingExprError, ShapeError)
     if "polars" in str(constructor):
         from polars.exceptions import ShapeError as PlShapeError
+
         expected_exceptions = expected_exceptions + (PlShapeError,)
     with pytest.raises(expected_exceptions):
         df.filter(nw.col("b").unique() > 2).lazy().collect()