Apply ruff/flake8-simplify rule SIM118

SIM118 Use `key in dict` instead of `key in dict.keys()`

Author: DimitriPapadopoulos

src/zarr/core/group.py

@@ -1225,7 +1225,7 @@ def _members_consolidated(
 
         # we kind of just want the top-level keys.
         if consolidated_metadata is not None:
-            for key in consolidated_metadata.metadata.keys():
+            for key in consolidated_metadata.metadata:
                 obj = self._getitem_consolidated(
                     self.store_path, key, prefix=self.name
                 )  # Metadata -> Group/Array

tests/test_api.py

@@ -154,7 +154,7 @@ def test_save(store: Store, n_args: int, n_kwargs: int) -> None:
         assert isinstance(group, Group)
         for array in group.array_values():
             assert_array_equal(array[:], data)
-        for k in kwargs.keys():
+        for k in kwargs:
             assert k in group
         assert group.nmembers() == n_args + n_kwargs