From 1fa350b4b620c5508b99926cd0be0a163edfc1ee Mon Sep 17 00:00:00 2001 From: Erlend Egeberg Aasland Date: Fri, 14 May 2021 00:44:55 +0200 Subject: [PATCH] bpo-43908: Add What's New entry for Py_TPFLAGS_IMMUTABLETYPE flag (GH-25816) (cherry picked from commit a09fc9c63f1b5980c62ff2712f67500bacb92b04) Co-authored-by: Erlend Egeberg Aasland --- Doc/whatsnew/3.10.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst index b0920294572b55..8fd64f86b3a2f5 100644 --- a/Doc/whatsnew/3.10.rst +++ b/Doc/whatsnew/3.10.rst @@ -1838,6 +1838,10 @@ New Features creating type instances. (Contributed by Victor Stinner in :issue:`43916`.) +* Add a new :c:data:`Py_TPFLAGS_IMMUTABLETYPE` type flag for creating immutable + type objects: type attributes cannot be set nor deleted. + (Contributed by Victor Stinner and Erlend E. Aasland in :issue:`43908`.) + Porting to Python 3.10 ---------------------- @@ -1895,6 +1899,12 @@ Porting to Python 3.10 been included directly, consider including ``Python.h`` instead. (Contributed by Nicholas Sim in :issue:`35134`) +* Use the :c:data:`Py_TPFLAGS_IMMUTABLETYPE` type flag to create immutable type + objects. Do not rely on :c:data:`Py_TPFLAGS_HEAPTYPE` to decide if a type + object is mutable or not; check if :c:data:`Py_TPFLAGS_IMMUTABLETYPE` is set + instead. + (Contributed by Victor Stinner and Erlend E. Aasland in :issue:`43908`.) + Deprecated ----------