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

for more information, see https://pre-commit.ci
pydata · kmuehlbauer · Jan 30, 2025 · Jun 5, 2024 · Jun 5, 2024 · Jun 5, 2024
commit 7a9ac3651f86fd2d980066fe6bee1c2b7bdaa936
diff --git a/xarray/core/combine.py b/xarray/core/combine.py
@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import itertools
 from collections import Counter, defaultdict
 from collections.abc import Callable, Hashable, Iterable, Iterator, Sequence
 from typing import TYPE_CHECKING, Literal, TypeVar, Union, cast
@@ -607,7 +606,8 @@ def vars_as_keys(ds):
 
 
 def groupby_defaultdict(
-    iter: list[T], key: Callable[[T], K],
+    iter: list[T],
+    key: Callable[[T], K],
 ) -> Iterator[tuple[K, Iterator[T]]]:
     """replacement for itertools.groupby"""
     idx = defaultdict(list)