[issue42138] Forward port Doc/whatsnew/3.9.rst to master

Guido van Rossum added the comment: Terry did the same thing in https://bugs.python.org/issue42139. -- resolution: -> duplicate stage: patch review -> resolved status: open -> closed ___ Python tracker

[issue42138] Forward port Doc/whatsnew/3.9.rst to master

Change by Guido van Rossum : -- keywords: +patch pull_requests: +21853 stage: -> patch review pull_request: https://github.com/python/cpython/pull/22933 ___ Python tracker ___

[issue42138] Forward port Doc/whatsnew/3.9.rst to master

New submission from Guido van Rossum : We discovered in issue41950 that the whatsnew/3.9.rst files differ quite a bit between 3.9 and master. IIUC this is (mostly) because Lukasz made a big pass updating it on occasion of the 3.9.0 release, and he did that in the 3.9 branch: https://github.com