Other Language Changes
======================
-* Add :ref:`support for the perf profiler <perf_profiling>` through the new
- environment variable :envvar:`PYTHONPERFSUPPORT`
- and command-line option :option:`-X perf <-X>`,
- as well as the new :func:`sys.activate_stack_trampoline`,
- :func:`sys.deactivate_stack_trampoline`,
- and :func:`sys.is_stack_trampoline_active` functions.
- (Design by Pablo Galindo. Contributed by Pablo Galindo and Christian Heimes
- with contributions from Gregory P. Smith [Google] and Mark Shannon
- in :gh:`96123`.)
-
-* The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`,
- have a new a *filter* argument that allows limiting tar features than may be
- surprising or dangerous, such as creating files outside the destination
- directory.
- See :ref:`tarfile extraction filters <tarfile-extraction-filter>` for details.
- In Python 3.14, the default will switch to ``'data'``.
- (Contributed by Petr Viktorin in :pep:`706`.)
-
-* :class:`types.MappingProxyType` instances are now hashable if the underlying
- mapping is hashable.
- (Contributed by Serhiy Storchaka in :gh:`87995`.)
-
-* :class:`memoryview` now supports the half-float type (the "e" format code).
- (Contributed by Donghee Na and Antoine Pitrou in :gh:`90751`.)
-
* The parser now raises :exc:`SyntaxError` when parsing source code containing
null bytes. (Contributed by Pablo Galindo in :gh:`96670`.)
-* :func:`ast.parse` now raises :exc:`SyntaxError` instead of :exc:`ValueError`
- when parsing source code containing null bytes. (Contributed by Pablo Galindo
- in :gh:`96670`.)
-
-* The Garbage Collector now runs only on the eval breaker mechanism of the
- Python bytecode evaluation loop instead of object allocations. The GC can
- also run when :c:func:`PyErr_CheckSignals` is called so C extensions that
- need to run for a long time without executing any Python code also have a
- chance to execute the GC periodically. (Contributed by Pablo Galindo in
- :gh:`97922`.)
-
* A backslash-character pair that is not a valid escape sequence now generates
a :exc:`SyntaxWarning`, instead of :exc:`DeprecationWarning`.
For example, ``re.compile("\d+\.\d+")`` now emits a :exc:`SyntaxWarning`
In a future Python version they will be eventually a :exc:`SyntaxError`.
(Contributed by Victor Stinner in :gh:`98401`.)
-* All builtin and extension callables expecting boolean parameters now accept
- arguments of any type instead of just :class:`bool` and :class:`int`.
- (Contributed by Serhiy Storchaka in :gh:`60203`.)
-
* Variables used in the target part of comprehensions that are not stored to
can now be used in assignment expressions (``:=``).
For example, in ``[(b := 1) for a, b.prop in some_iter]``, the assignment to
part of comprehensions (like ``a``) is still disallowed, as per :pep:`572`.
(Contributed by Nikita Sobolev in :gh:`100581`.)
-* :class:`slice` objects are now hashable, allowing them to be used as dict keys and
- set items. (Contributed by Will Bradshaw, Furkan Onder, and Raymond Hettinger in :gh:`101264`.)
-
-* :func:`sum` now uses Neumaier summation to improve accuracy and commutativity
- when summing floats or mixed ints and floats.
- (Contributed by Raymond Hettinger in :gh:`100425`.)
-
* Exceptions raised in a class or type's ``__set_name__`` method are no longer
wrapped by a :exc:`RuntimeError`. Context information is added to the
exception as a :pep:`678` note. (Contributed by Irit Katriel in :gh:`77757`.)
:exc:`ExceptionGroup`. Also changed in version 3.11.4. (Contributed by Irit
Katriel in :gh:`103590`.)
+* The Garbage Collector now runs only on the eval breaker mechanism of the
+ Python bytecode evaluation loop instead of object allocations. The GC can
+ also run when :c:func:`PyErr_CheckSignals` is called so C extensions that
+ need to run for a long time without executing any Python code also have a
+ chance to execute the GC periodically. (Contributed by Pablo Galindo in
+ :gh:`97922`.)
+
+* All builtin and extension callables expecting boolean parameters now accept
+ arguments of any type instead of just :class:`bool` and :class:`int`.
+ (Contributed by Serhiy Storchaka in :gh:`60203`.)
+
+* :class:`memoryview` now supports the half-float type (the "e" format code).
+ (Contributed by Donghee Na and Antoine Pitrou in :gh:`90751`.)
+
+* :class:`slice` objects are now hashable, allowing them to be used as dict keys and
+ set items. (Contributed by Will Bradshaw, Furkan Onder, and Raymond Hettinger in :gh:`101264`.)
+
+* :func:`sum` now uses Neumaier summation to improve accuracy and commutativity
+ when summing floats or mixed ints and floats.
+ (Contributed by Raymond Hettinger in :gh:`100425`.)
+
+* :func:`ast.parse` now raises :exc:`SyntaxError` instead of :exc:`ValueError`
+ when parsing source code containing null bytes. (Contributed by Pablo Galindo
+ in :gh:`96670`.)
+
+* The extraction methods in :mod:`tarfile`, and :func:`shutil.unpack_archive`,
+ have a new a *filter* argument that allows limiting tar features than may be
+ surprising or dangerous, such as creating files outside the destination
+ directory.
+ See :ref:`tarfile extraction filters <tarfile-extraction-filter>` for details.
+ In Python 3.14, the default will switch to ``'data'``.
+ (Contributed by Petr Viktorin in :pep:`706`.)
+
+* :class:`types.MappingProxyType` instances are now hashable if the underlying
+ mapping is hashable.
+ (Contributed by Serhiy Storchaka in :gh:`87995`.)
+
+* Add :ref:`support for the perf profiler <perf_profiling>` through the new
+ environment variable :envvar:`PYTHONPERFSUPPORT`
+ and command-line option :option:`-X perf <-X>`,
+ as well as the new :func:`sys.activate_stack_trampoline`,
+ :func:`sys.deactivate_stack_trampoline`,
+ and :func:`sys.is_stack_trampoline_active` functions.
+ (Design by Pablo Galindo. Contributed by Pablo Galindo and Christian Heimes
+ with contributions from Gregory P. Smith [Google] and Mark Shannon
+ in :gh:`96123`.)
+
New Modules
===========
projects / thirdparty / Python / cpython.git / commitdiff
