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

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

Author: pre-commit-ci[bot]

xarray/core/dataset.py

@@ -2997,10 +2997,7 @@ def isel(
                 # all, just avoid iterating through thing
                 var_indexer_keys = all_keys.intersection(var_dims)
                 if var_indexer_keys:
-                    var_indexers = {
-                        k: indexers[k]
-                        for k in var_indexer_keys
-                    }
+                    var_indexers = {k: indexers[k] for k in var_indexer_keys}
                     var = var.isel(var_indexers)
                     if drop and var.ndim == 0 and name in coord_names:
                         coord_names.remove(name)