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bpo-43908: Add What's New entry for Py_TPFLAGS_IMMUTABLETYPE flag (GH-25816)

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Erlend Egeberg Aasland 2021-05-14 00:44:55 +02:00 • committed by GitHub
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Doc/whatsnew/3.10.rst
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@ -1846,6 +1846,10 @@ 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
----------------------
@ -1903,6 +1907,12 @@ 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
----------