make sure we actually decide based on dask.array.Array

pydata · Feb 21, 2020 · df4ea68 · df4ea68
1 parent b6b1ca9
commit df4ea68
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/xarray/core/duck_array_ops.py b/xarray/core/duck_array_ops.py
@@ -72,7 +72,7 @@ def fail_on_dask_array_input(values, msg=None, func_name=None):
 
 
 if hasattr(np, "isnat") and (
-    dask_array is None or hasattr(dask_array_type, "__array_ufunc__")
+    dask_array_type == () or hasattr(dask_array_type[0], "__array_ufunc__")
 ):
     # np.isnat is available since NumPy 1.13, so __array_ufunc__ is always
     # supported.