type annotations

Author: Guido Imperiale

xarray/core/dataarray.py

@@ -300,7 +300,7 @@ def _replace(
         self,
         variable: Variable = None,
         coords=None,
-        name: Union[Hashable, None, ReprObject] = __default,
+        name: Optional[Hashable] = __default,
     ) -> 'DataArray':
         if variable is None:
             variable = self.variable
@@ -313,7 +313,7 @@ def _replace(
     def _replace_maybe_drop_dims(
             self,
             variable: Variable,
-            name: Union[str, None, utils.ReprObject] = __default
+            name: Optional[Hashable] = __default
     ) -> 'DataArray':
         if variable.dims == self.dims and variable.shape == self.shape:
             coords = self._coords.copy()
@@ -356,7 +356,7 @@ def _to_temp_dataset(self) -> Dataset:
     def _from_temp_dataset(
         self,
         dataset: Dataset,
-        name: Union[Hashable, ReprObject] = __default
+        name: Hashable = __default
     ) -> 'DataArray':
         variable = dataset._variables.pop(_THIS_ARRAY)
         coords = dataset._variables

xarray/tests/test_utils.py

@@ -1,5 +1,6 @@
 from collections import OrderedDict
 from datetime import datetime
+from typing import Hashable
 
 import numpy as np
 import pandas as pd
@@ -179,6 +180,8 @@ def test_sorted_keys_dict(self):
 def test_repr_object():
     obj = utils.ReprObject('foo')
     assert repr(obj) == 'foo'
+    assert isinstance(obj, Hashable)
+    assert not isinstance(obj, str)
 
 
 def test_repr_object_magic_methods():