diff --git a/ome_zarr/format.py b/ome_zarr/format.py
index 3290254a..3cbe4e0b 100644
--- a/ome_zarr/format.py
+++ b/ome_zarr/format.py
@@ -360,7 +360,7 @@ def init_store(self, path: str, mode: str = "r") -> FSStore:
 
         cls = LocalStore
         kwargs = {}
-        
+
         if path.startswith(("http", "s3")):
             cls = RemoteStore
 
@@ -371,6 +371,6 @@ def init_store(self, path: str, mode: str = "r") -> FSStore:
         )  # TODO: open issue for using Path
         LOGGER.debug("Created v0.5 store %s(%s, %s, %s)", cls, path, mode, kwargs)
         return store
-    
+
 
 CurrentFormat = FormatV05
diff --git a/ome_zarr/io.py b/ome_zarr/io.py
index fb5538d2..30dc290b 100644
--- a/ome_zarr/io.py
+++ b/ome_zarr/io.py
@@ -168,9 +168,9 @@ async def get_json(self, subpath: str) -> JSONDict:
         All other exceptions log at the ERROR level.
         """
         try:
-            print('get_json', subpath)
+            print("get_json", subpath)
             data = await self.__store.get(subpath)
-            print('data', data)
+            print("data", data)
 
             if not data:
                 return {}
diff --git a/ome_zarr/writer.py b/ome_zarr/writer.py
index 0b4b0574..5d09176f 100644
--- a/ome_zarr/writer.py
+++ b/ome_zarr/writer.py
@@ -265,7 +265,13 @@ def write_multiscale(
 
         else:
             # We create the array and write data to it immediately...
-            a = group.create_array(str(path), chunks=chunks_opt, shape=data.shape, dtype=data.dtype, **options)
+            a = group.create_array(
+                str(path),
+                chunks=chunks_opt,
+                shape=data.shape,
+                dtype=data.dtype,
+                **options,
+            )
             # These 2 lines are equivalent to e.g. a[:,:] = data (for any number of dimensions)
             s = [np.s_[:]] * len(data.shape)
             a[tuple(s)] = data