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

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

Author: pre-commit-ci[bot]

asv_bench/benchmarks/indexing.py

@@ -78,10 +78,7 @@ def setup(self, key):
         # Benchmark how indexing is slowed down by adding many scalar variable
         # to the dataset
         # https://github.com/pydata/xarray/pull/9003
-        self.ds_large = self.ds.merge({
-            f"extra_var{i}": i
-                for i in range(400)
-        })
+        self.ds_large = self.ds.merge({f"extra_var{i}": i for i in range(400)})
 
 
 class Indexing(Base):