diff --git a/xarray/namedarray/core.py b/xarray/namedarray/core.py
index 43b6a766483..1f893d21c82 100644
--- a/xarray/namedarray/core.py
+++ b/xarray/namedarray/core.py
@@ -20,27 +20,25 @@
 from xarray.core import dtypes
 from xarray.namedarray.utils import (
     Default,
+    DuckArray,
     _arrayfunction_or_api,
     _AttrsLike,
     _Chunks,
     _default,
-    _Array,
-    DuckArray,
-    duckarray,
     _Dim,
     _Dims,
     _DimsLike,
     _DType_co,
     _IntOrUnknown,
-    _Shape,
-    _DType_co,
     _ScalarType,
     _ScalarType_co,
+    _Shape,
     _ShapeType,
     _ShapeType_co,
-    _SupportsReal,
-    _SupportsImag,
     _sparsearrayfunction_or_api,
+    _SupportsImag,
+    _SupportsReal,
+    duckarray,
     is_chunked_duck_array,
     is_duck_dask_array,
     to_0d_object_array,
@@ -126,7 +124,6 @@ def from_array(
         return NamedArray(dims, data, attrs)
 
     if isinstance(data, _arrayfunction_or_api):
-
         return NamedArray(dims, data, attrs)
     else:
         if isinstance(data, tuple):
diff --git a/xarray/namedarray/utils.py b/xarray/namedarray/utils.py
index 6bd62a0b17f..8b5320ad34b 100644
--- a/xarray/namedarray/utils.py
+++ b/xarray/namedarray/utils.py
@@ -13,8 +13,8 @@
     SupportsIndex,
     TypeVar,
     Union,
-    runtime_checkable,
     overload,
+    runtime_checkable,
 )
 
 import numpy as np
@@ -54,6 +54,7 @@
 _ScalarType = TypeVar("_ScalarType", bound=np.generic)
 _ScalarType_co = TypeVar("_ScalarType_co", bound=np.generic, covariant=True)
 
+
 # A protocol for anything with the dtype attribute
 @runtime_checkable
 class _SupportsDType(Protocol[_DType_co]):
@@ -97,6 +98,7 @@ class _SupportsImag(Protocol[_T_co]):
     def imag(self) -> _T_co:
         ...
 
+
 _SupportsReal[_ScalarType]