From 9cb117b24b3d4b6baca539446fe8c3cc37ec4a1b Mon Sep 17 00:00:00 2001
From: Illviljan <14371165+Illviljan@users.noreply.github.com>
Date: Sun, 21 May 2023 11:06:29 +0200
Subject: [PATCH] Avoid explicit loop when updating OrderedSet

---
 xarray/core/utils.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xarray/core/utils.py b/xarray/core/utils.py
index 6ed0b2c4318..7270a8f587f 100644
--- a/xarray/core/utils.py
+++ b/xarray/core/utils.py
@@ -536,8 +536,7 @@ def discard(self, value: T) -> None:
     # Additional methods
 
     def update(self, values: Iterable[T]) -> None:
-        for v in values:
-            self._d[v] = None
+        self._d.update(dict.fromkeys(values))
 
     def __repr__(self) -> str:
         return f"{type(self).__name__}({list(self)!r})"