Ma Lin [Mon, 9 May 2022 02:58:55 +0000 (10:58 +0800)]
bpo-38056: overhaul Error Handlers section in codecs documentation (#15732)
* Some handlers were wrongly described as text-encoding only, but actually they can also be used in text-decoding.
* Add more description to each handler.
* Add two REPL examples.
* Add indexes for Error Handler's name.
Co-authored-by: Kyle Stanley <aeros167@gmail.com> Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
gh-91760: More strict rules for numerical group references and group names in RE (GH-91792)
Only sequence of ASCII digits is now accepted as a numerical reference.
The group name in bytes patterns and replacement strings can now only
contain ASCII letters and digits and underscore.
bpo-45046: Support context managers in unittest (GH-28045)
Add methods enterContext() and enterClassContext() in TestCase.
Add method enterAsyncContext() in IsolatedAsyncioTestCase.
Add function enterModuleContext().
Alex Waygood [Sun, 8 May 2022 13:23:22 +0000 (14:23 +0100)]
gh-92417: `stdtypes` docs: delete discussion of Python 2 differences (GH-92423)
Given that 2.7 has now been end-of-life for two and a half years,
I don't think we need such a detailed explanation here anymore of
the differences between Python 2 and Python 3.
GH-92431: Fix footnotes in Doc/c-api/exceptions.rst (GH-92432)
* Remove redundant footnote ref: the footnote has been removed
* Fix footnote ref to match footnote
* Convert footnotes into reST footnotes: will error if missing
larryhastings [Fri, 6 May 2022 17:09:35 +0000 (10:09 -0700)]
gh-92203: Add closure support to exec(). (#92204)
Add a closure keyword-only parameter to exec(). It can only be specified when exec-ing a code object that uses free variables. When specified, it must be a tuple, with exactly the number of cell variables referenced by the code object. closure has a default value of None, and it must be None if the code object doesn't refer to any free variables.
Victor Stinner [Fri, 6 May 2022 14:18:56 +0000 (16:18 +0200)]
gh-90978: test_ssl of test_asyncio uses LONG_TIMEOUT (#92402)
On slow buildbot workers, some test_ssl tests fail randomly because
of short timeout (30 seconds). Use support.LONG_TIMEOUT instead which
is longer and also adjusted (by regrtest --timeout option) on
buildbot workers known to be slow.
gh-92356: Fix regression in ctypes function call overhead (#92357)
38f331d introduced a delayed initialization routine to set up
ctypes formattable (`_ctypes_init_fielddesc`), but inadvertently
removed setting the `initialization` flag to 1 to avoid initting
each time.
Victor Stinner [Thu, 5 May 2022 23:34:11 +0000 (01:34 +0200)]
gh-57684: Add -P cmdline option and PYTHONSAFEPATH env var (#31542)
Add the -P command line option and the PYTHONSAFEPATH environment
variable to not prepend a potentially unsafe path to sys.path.
* Add sys.flags.safe_path flag.
* Add PyConfig.safe_path member.
* Programs/_bootstrap_python.c uses config.safe_path=0.
* Update subprocess._optim_args_from_interpreter_flags() to handle
the -P command line option.
* Modules/getpath.py sets safe_path to 1 if a "._pth" file is
present.
gh-82616: Add process_group support to subprocess.Popen (#23930)
One more thing that can help prevent people from using `preexec_fn`.
Also adds conditional skips to two tests exposing ASAN flakiness on the Ubuntu 20.04 Address Sanitizer Github CI system. When that build is run on more modern systems the "problem" does not show up. It seems ASAN implementation related.
gh-92345: Import rlcompleter before sys.path is extended (#92346)
``pymain_run_python()`` now imports ``readline`` and ``rlcompleter``
before sys.path is extended to include the current working directory of
an interactive interpreter. Non-interactive interpreters are not
affected.
Also move imports of ``re`` and ``keyword`` module to top level so they
are materialized early, too. The ``keyword`` module is trivial and the
``re`` is already imported via ``inspect`` -> ``linecache``.
Victor Stinner [Wed, 4 May 2022 11:30:23 +0000 (13:30 +0200)]
Use static inline function Py_EnterRecursiveCall() (#91988)
Currently, calling Py_EnterRecursiveCall() and
Py_LeaveRecursiveCall() may use a function call or a static inline
function call, depending if the internal pycore_ceval.h header file
is included or not. Use a different name for the static inline
function to ensure that the static inline function is always used in
Python internals for best performance. Similar approach than
PyThreadState_GET() (function call) and _PyThreadState_GET() (static
inline function).
* Rename _Py_EnterRecursiveCall() to _Py_EnterRecursiveCallTstate()
* Rename _Py_LeaveRecursiveCall() to _Py_LeaveRecursiveCallTstate()
* pycore_ceval.h: Rename Py_EnterRecursiveCall() to
_Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() and
_Py_LeaveRecursiveCall()
Victor Stinner [Wed, 4 May 2022 09:59:01 +0000 (11:59 +0200)]
gh-92036: Fix gc_fini_untrack() (#92037)
Fix a crash in subinterpreters related to the garbage collector. When
a subinterpreter is deleted, untrack all objects tracked by its GC.
To prevent a crash in deallocator functions expecting objects to be
tracked by the GC, leak a strong reference to these objects on
purpose, so they are never deleted and their deallocator functions
are not called.