[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

xarray/tests/test_datatree.py

@@ -2425,32 +2425,35 @@ def test_arithmetic_inherited_coords(self) -> None:
 
     def test_binary_op_compat_setting(self) -> None:
         # Setting up a clash of non-index coordinate 'foo':
-        a = DataTree(xr.Dataset(
-            data_vars={"var": (["x"], [0, 0, 0])},
-            coords={
-                "x": [1, 2, 3],
-                "foo": (["x"], [1.0, 2.0, np.nan]),
-            },
-        ))
-        b = DataTree(xr.Dataset(
-            data_vars={"var": (["x"], [0, 0, 0])},
-            coords={
-                "x": [1, 2, 3],
-                "foo": (["x"], [np.nan, 2.0, 3.0]),
-            },
-        ))
+        a = DataTree(
+            xr.Dataset(
+                data_vars={"var": (["x"], [0, 0, 0])},
+                coords={
+                    "x": [1, 2, 3],
+                    "foo": (["x"], [1.0, 2.0, np.nan]),
+                },
+            )
+        )
+        b = DataTree(
+            xr.Dataset(
+                data_vars={"var": (["x"], [0, 0, 0])},
+                coords={
+                    "x": [1, 2, 3],
+                    "foo": (["x"], [np.nan, 2.0, 3.0]),
+                },
+            )
+        )
 
         with xr.set_options(arithmetic_compat="minimal"):
-            expected = DataTree(a.dataset.drop_vars('foo'))
+            expected = DataTree(a.dataset.drop_vars("foo"))
             assert_equal(a + b, expected)
 
         with xr.set_options(arithmetic_compat="override"):
             assert_equal(a + b, a)
             assert_equal(b + a, b)
 
         with xr.set_options(arithmetic_compat="no_conflicts"):
-            expected = DataTree(a.dataset.assign_coords(
-                foo=(["x"], [1.0, 2.0, 3.0])))
+            expected = DataTree(a.dataset.assign_coords(foo=(["x"], [1.0, 2.0, 3.0])))
             assert_equal(a + b, expected)
             assert_equal(b + a, expected)