Update groupby.py

andersy005 · Sep 20, 2023 · 76bb881 · 76bb881
1 parent 32ec4ea
commit 76bb881
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/xarray/core/groupby.py b/xarray/core/groupby.py
@@ -699,7 +699,7 @@ class GroupBy(Generic[T_Xarray]):
 
     _groups: dict[GroupKey, GroupIndex] | None
     _dims: tuple[Hashable, ...] | Frozen[Hashable, int] | None
-    _sizes: Frozen[Hashable, int] | None
+    _sizes: Mapping[Hashable, int] | None
 
     def __init__(
         self,