From db1d1b129785472557609ea02b5a4d46a6af94fe Mon Sep 17 00:00:00 2001 From: JustAnotherArchivist Date: Tue, 14 Jul 2020 17:22:43 +0000 Subject: [PATCH] bpo-32528: Document the change in inheritance of asyncio.CancelledError (GH-21474) GH-msg373510 [bpo-32528]()/GH-13528 changed `asyncio.CancelledError` such that it no longer inherits from `concurrent.futures.CancelledError`. As this affects existing code, specifically when catching the latter instead of the former in exception handling, it should be documented in the "What's new in 3.8?" document. Automerge-Triggered-By: @1st1 (cherry picked from commit 2a5181829af394b82e8e8c917183c709ee72a2b7) Co-authored-by: JustAnotherArchivist --- Doc/whatsnew/3.8.rst | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index d2db5bff5afcf5..475e3ab9643120 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -648,7 +648,8 @@ loop on every invocation: (Contributed by Yury Selivanov in :issue:`37028`.) The exception :class:`asyncio.CancelledError` now inherits from -:class:`BaseException` rather than :class:`Exception`. +:class:`BaseException` rather than :class:`Exception` and no longer inherits +from :class:`concurrent.futures.CancelledError`. (Contributed by Yury Selivanov in :issue:`32528`.) On Windows, the default event loop is now :class:`~asyncio.ProactorEventLoop`. @@ -1953,7 +1954,8 @@ Changes in the Python API (Contributed by Anthony Sottile in :issue:`36264`.) * The exception :class:`asyncio.CancelledError` now inherits from - :class:`BaseException` rather than :class:`Exception`. + :class:`BaseException` rather than :class:`Exception` and no longer inherits + from :class:`concurrent.futures.CancelledError`. (Contributed by Yury Selivanov in :issue:`32528`.) * The function :func:`asyncio.wait_for` now correctly waits for cancellation