bpo-39493: Fix definition of IO.closed in typing.py (GH-18265)

miss-islington · hauntsaninja · web-flow · commit 58076df0c596 · 2020-01-29T21:42:38.000-08:00
(cherry picked from commit 2e6569b) Co-authored-by: Shantanu <hauntsaninja@users.noreply.github.com>
diff --git a/Lib/typing.py b/Lib/typing.py
@@ -1848,6 +1848,7 @@ def name(self) -> str:
     def close(self) -> None:
         pass
 
+    @property
     @abstractmethod
     def closed(self) -> bool:
         pass
diff --git a/Misc/NEWS.d/next/Library/2020-01-30-01-13-19.bpo-39493.CbFRi7.rst b/Misc/NEWS.d/next/Library/2020-01-30-01-13-19.bpo-39493.CbFRi7.rst
@@ -0,0 +1 @@
+Mark ``typing.IO.closed`` as a property
