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

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Author: pre-commit-ci[bot]

tests/test_io_elementwise.py

@@ -947,6 +947,7 @@ def test_write_auto_sharded_default_warns(tmp_path: Path):
     ):
         adata.write_zarr(path)
 
+
 @pytest.mark.zarr_io
 @pytest.mark.skipif(
     Version(version("zarr")) < Version("3.1.4"),
@@ -955,12 +956,17 @@ def test_write_auto_sharded_default_warns(tmp_path: Path):
 def test_write_auto_sharded_size_sparse(tmp_path: Path):
     path = "memory://check_shards.zarr"
     z = zarr.open(path)
-    mat = sparse.random(1000, 1000, density=.5, format="csr", random_state=np.random.default_rng(42))
+    mat = sparse.random(
+        1000, 1000, density=0.5, format="csr", random_state=np.random.default_rng(42)
+    )
     ad.io.write_elem(z, "two_shards_per_sub_element", mat)
     # i.e., there are at most two shards since one shard will contain two chunks,
     # and the other the last elements, since the target size is 1GB uncompressed.
     for sub_element in ["indices", "data", "indptr"]:
-        assert (z["two_shards_per_sub_element"][sub_element].shape[0] / z["two_shards_per_sub_element"][sub_element].shards[0]) < 2, sub_element
+        assert (
+            z["two_shards_per_sub_element"][sub_element].shape[0]
+            / z["two_shards_per_sub_element"][sub_element].shards[0]
+        ) < 2, sub_element
 
 
 @pytest.mark.zarr_io