commit 138a9b9c2a394f30f222c23391f9515a7df9d809
author Vlad Serebrennikov <brainvlad@gmail.com> Thu Apr 30 04:06:39 2020 +0300
committer GitHub <noreply@github.com> Wed Apr 29 18:06:39 2020 -0700
tree 04e0c2277414db12ea5a2acdc3cdf867f16db613
parent b1e11c31c523dc082985e9de779ceeb47224e536

bpo-40389: Improve repr of typing.Optional (#19714)

Lib/test/test_dataclasses.py

diff --git a/Lib/test/test_dataclasses.py b/Lib/test/test_dataclasses.py
index e8fe455..b20103b 100644
--- a/Lib/test/test_dataclasses.py
+++ b/Lib/test/test_dataclasses.py
@@ -2028,7 +2028,7 @@
         class C:
             x: Union[int, type(None)] = None
 
-        self.assertDocStrEqual(C.__doc__, "C(x:Union[int, NoneType]=None)")
+        self.assertDocStrEqual(C.__doc__, "C(x:Optional[int]=None)")
 
     def test_docstring_list_field(self):
         @dataclass

Lib/test/test_typing.py

diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index cab8de0..21bc7c8 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -1750,7 +1750,7 @@
         self.assertEqual(repr(Union[Tuple, Tuple[int]]).replace('typing.', ''),
                          'Union[Tuple, Tuple[int]]')
         self.assertEqual(repr(Callable[..., Optional[T]][int]).replace('typing.', ''),
-                         'Callable[..., Union[int, NoneType]]')
+                         'Callable[..., Optional[int]]')
         self.assertEqual(repr(Callable[[], List[T]][int]).replace('typing.', ''),
                          'Callable[[], List[int]]')