return NotImplemented

Author: TomNicholas

xarray/core/datatree.py

@@ -1499,8 +1499,7 @@ def _binary_op(self, other, f, reflexive=False, join=None) -> DataTree:
         from xarray.core.groupby import GroupBy
 
         if isinstance(other, GroupBy):
-            # TODO should we be trying to make this work?
-            raise NotImplementedError
+            return NotImplemented
 
         ds_binop = functools.partial(
             Dataset._binary_op,