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

for more information, see https://pre-commit.ci

xarray/core/indexes.py

@@ -1482,7 +1482,7 @@ def _id_coord_names(self) -> dict[int, tuple[Hashable, ...]]:
         if self.__id_coord_names is None:
             self._create_id_coord_names()
         return self.__id_coord_names
-    
+
     def _create_id_coord_names(self) -> None:
         id_coord_names: Mapping[int, list[Hashable]] = defaultdict(list)
         for k, v in self._coord_name_id.items():
@@ -1773,13 +1773,14 @@ def check_variables():
 
     return not not_equal
 
+
 def _apply_indexes_isel(
     indexes: Indexes[Index],
     args: Mapping[Any, Any],
 ):
     new_indexes: dict[Hashable, Index] = {k: v for k, v in indexes.items()}
     new_index_variables: dict[Hashable, Variable] = {}
-#     for index, index_vars in indexes.group_by_index():
+    #     for index, index_vars in indexes.group_by_index():
     for index in indexes._id_index.values():
         # index = indexes._id_index[i]
         index_dims = (index.index.name,)
@@ -1791,7 +1792,8 @@ def _apply_indexes_isel(
                 new_index_vars = new_index.create_variables(index_vars)
                 new_index_variables.update(new_index_vars)
 
-    return new_indexes, new_index_variables 
+    return new_indexes, new_index_variables
+
 
 def _apply_indexes(
     indexes: Indexes[Index],