style: pre-commit fixes

src/awkward/contents/indexedoptionarray.py

@@ -10,7 +10,6 @@
 from awkward._layout import maybe_posaxis
 from awkward._meta.indexedoptionmeta import IndexedOptionMeta
 from awkward._nplikes.array_like import ArrayLike
-from awkward._nplikes.cupy import Cupy
 from awkward._nplikes.numpy import Numpy
 from awkward._nplikes.numpy_like import IndexType, NumpyMetadata
 from awkward._nplikes.placeholder import PlaceholderArray

src/awkward/contents/recordarray.py

@@ -1102,8 +1102,12 @@ def _to_arrow(
         )
 
     def _to_cudf(self, cudf: Any, mask: Content | None, length: int):
-        children = tuple(c._to_cudf(cudf, mask=None, length=length) for c in self.contents)
-        dt = cudf.core.dtypes.StructDtype({field: c.dtype for field, c in zip(self.fields, children)})
+        children = tuple(
+            c._to_cudf(cudf, mask=None, length=length) for c in self.contents
+        )
+        dt = cudf.core.dtypes.StructDtype(
+            {field: c.dtype for field, c in zip(self.fields, children)}
+        )
         m = mask._to_cudf(cudf, None, length) if mask else None
         return cudf.core.column.struct.StructColumn(
             data=None,

tests-cuda/test_3051_to_cuda.py

@@ -1,4 +1,5 @@
-import numpy as np
+from __future__ import annotations
+
 import pytest
 
 import awkward as ak
@@ -15,10 +16,15 @@ def test_jagged():
 
 
 def test_nested():
-    arr = ak.Array([{"a": 0, "b": 1., "c": {"d": 0}}, {"a": 1, "b": 0., "c": {"d": 1}}])
+    arr = ak.Array(
+        [{"a": 0, "b": 1.0, "c": {"d": 0}}, {"a": 1, "b": 0.0, "c": {"d": 1}}]
+    )
     out = ak.to_cudf(arr)
     assert isinstance(out, cudf.Series)
-    assert out.to_arrow().tolist() == [{"a": 0, "b": 1., "c": {"d": 0}}, {"a": 1, "b": 0., "c": {"d": 1}}]
+    assert out.to_arrow().tolist() == [
+        {"a": 0, "b": 1.0, "c": {"d": 0}},
+        {"a": 1, "b": 0.0, "c": {"d": 1}},
+    ]
 
 
 def test_null():