diff --git a/xarray/core/coordinates.py b/xarray/core/coordinates.py index 4bdcb76d006..572e9c2998b 100644 --- a/xarray/core/coordinates.py +++ b/xarray/core/coordinates.py @@ -177,7 +177,7 @@ def to_index(self, ordered_dims: Sequence[Hashable] | None = None) -> pd.Index: # compute the cartesian product code_list += [ - np.tile(np.repeat(code, repeat_counts[i]), tile_counts[i]).tolist() + np.tile(np.repeat(code, repeat_counts[i]), tile_counts[i]) for code in codes ] level_list += levels