Victor Stinner [Thu, 16 Nov 2023 13:52:33 +0000 (14:52 +0100)]
gh-111798: Use lower Py_C_RECURSION_LIMIT in debug mode (#112124)
* Run again test_ast_recursion_limit() on WASI platform.
* Add _testinternalcapi.get_c_recursion_remaining().
* Fix test_ast and test_sys_settrace: test_ast_recursion_limit() and
test_trace_unpack_long_sequence() now adjust the maximum recursion
depth depending on the the remaining C recursion.
[doc] Make subprocess.wait documentation more precise (#98700)
[doc] Make subprocess.wait doc more precise
An active loop is only used when the `timeout` parameter is used on
POSIX.
When no timeout is used, the code calls `os.waitpid` internally (which puts
the process on a sleep status). On Windows, the internal Windows API
call accepts a timeout parameter, so that is delegated to the OS.
Victor Stinner [Wed, 15 Nov 2023 20:47:14 +0000 (21:47 +0100)]
gh-112088: Run autoreconf in GHA check_generated_files (#112090)
The "Check if generated files are up to date" job of GitHub Actions
now runs the "autoreconf -ivf -Werror" command instead of the "make
regen-configure" command to avoid depending on the external quay.io
server.
Add Tools/build/regen-configure.sh script to regenerate the configure
with an Ubuntu container image. The
"quay.io/tiran/cpython_autoconf:271" container image
(https://github.com/tiran/cpython_autoconf) is no longer used.
Victor Stinner [Wed, 15 Nov 2023 17:14:08 +0000 (18:14 +0100)]
gh-96954: Don't run regen-unicodedata in regen-all (#112120)
The "make regen-unicodedata" should now be run manually. By the
default, it requires an Internet connection, which is not always the
case. Some Linux distributions build Linux packages in isolated
environment (without network).
Miro Hrončok [Wed, 15 Nov 2023 16:42:17 +0000 (17:42 +0100)]
gh-96954: Fix `make regen-unicodedata` in out-of-tree builds (#112118)
This avoids:
python3.13 Tools/unicode/makeunicodedata.py
python3.13: can't open file '.../build/debug/Tools/unicode/makeunicodedata.py': [Errno 2] No such file or directory
make: *** [Makefile:1498: regen-unicodedata] Error 2
Re-run `make regen-unicodedata` to update the script path in generated files.
Serhiy Storchaka [Tue, 14 Nov 2023 15:37:56 +0000 (17:37 +0200)]
gh-111942: Fix crashes in TextIOWrapper.reconfigure() (GH-111976)
* Fix crash when encoding is not string or None.
* Fix crash when both line_buffering and write_through raise exception
when converted ti int.
* Add a number of tests for constructor and reconfigure() method
with invalid arguments.
Sam Gross [Tue, 14 Nov 2023 10:47:46 +0000 (05:47 -0500)]
gh-111903: Add `@critical_section` directive to Argument Clinic. (#111904)
The `@critical_section` directive instructs Argument Clinic to generate calls
to `Py_BEGIN_CRITICAL_SECTION()` and `Py_END_CRITICAL_SECTION()` around the
bound function. In `--disable-gil` builds, these calls will lock and unlock
the `self` object. They are no-ops in the default build.
This is used in one place (`_io._Buffered.close`) as a demonstration.
Subsequent PRs will use it more widely in the `_io.Buffered` bindings.
Terry Jan Reedy [Mon, 13 Nov 2023 19:24:03 +0000 (14:24 -0500)]
gh-112007: Re-organize help utility intro message (#112017)
Most important: move how-to-quit sentence to the end and mention 'q'.
Re-group the other sentences and improve some wording.
--------- Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Barney Gale [Mon, 13 Nov 2023 17:48:16 +0000 (17:48 +0000)]
GH-110417: Fix `glob` docs ordering (#110418)
Fix incorrect placement of `translate()` docs from cf67ebf.
Move "see also: pathlib" admonition to the bottom of the page, alongside one for fnmatch. This helps the module introduction flow more naturally into the function descriptions.
Add an "Examples" subheading just before the examples. This makes it more obvious that examples aren't specifically related to the preceding documentation of `escape()` and `translate()`.
Barney Gale [Mon, 13 Nov 2023 17:15:56 +0000 (17:15 +0000)]
GH-72904: Add `glob.translate()` function (#106703)
Add `glob.translate()` function that converts a pathname with shell wildcards to a regular expression. The regular expression is used by pathlib to implement `match()` and `glob()`.
This function differs from `fnmatch.translate()` in that wildcards do not match path separators by default, and that a `*` pattern segment matches precisely one path segment. When *recursive* is set to true, `**` pattern segments match any number of path segments, and `**` cannot appear outside its own segment.
In pathlib, this change speeds up directory walking (because `_make_child_relpath()` does less work), makes path objects smaller (they don't need a `_lines` slot), and removes the need for some gnarly code.
Co-authored-by: Jason R. Coombs <jaraco@jaraco.com> Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Victor Stinner [Mon, 13 Nov 2023 16:14:56 +0000 (17:14 +0100)]
gh-111138: Add PyList_Extend() and PyList_Clear() functions (#111862)
* Split list_extend() into two sub-functions: list_extend_fast() and
list_extend_iter().
* list_inplace_concat() no longer has to call Py_DECREF() on the
list_extend() result, since list_extend() now returns an int.
In PyObject_GC_Del, in Py_DEBUG mode, when warning about GC objects that
were not properly untracked before starting destruction, take care to
untrack the object _before_ warning, to avoid triggering a GC run and
causing the problem the code tries to warn about. Also make sure to save and
restore any pending exceptions, which the warning would otherwise clobber or
trigger an assertion error on.
T. Wouters [Sat, 11 Nov 2023 23:56:27 +0000 (00:56 +0100)]
Fix undefined behaviour in datetime.time.fromisoformat() (#111982)
Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).
Stephen Gildea [Sat, 11 Nov 2023 17:41:33 +0000 (09:41 -0800)]
gh-90890: New methods to access mailbox.Maildir message info and flags (#103905)
New methods to access mailbox.Maildir message info and flags:
get_info, set_info, get_flags, set_flags, add_flag, remove_flag.
These methods speed up accessing a message's info and/or flags and are
useful when it is not necessary to access the message's contents,
as when iterating over a Maildir to find messages with specific flags.
---------
* Add more str type checking
* modernize to f-strings instead of %
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Sam Gross [Thu, 9 Nov 2023 23:37:11 +0000 (18:37 -0500)]
gh-111569: Fix critical sections test on WebAssembly (GH-111897)
This adds a macro `Py_CAN_START_THREADS` that corresponds to the Python
function `test.support.threading_helper.can_start_thread()`. WASI and
some Emscripten builds do not have a working pthread implementation.
This macro is used to guard the critical sections C API tests that
require a working threads implementation.
Victor Stinner [Thu, 9 Nov 2023 22:10:21 +0000 (23:10 +0100)]
gh-111881: Import _sha2 lazily in random (#111889)
The random module now imports the _sha2 module lazily in the
Random.seed() method for str, bytes and bytearray seeds. It also
imports lazily the warnings module in the _randbelow() method for
classes without getrandbits(). Lazy import makes Python startup
faster and reduces the number of imported modules at startup.
gh-111786: Optimize for space for _PyEval_EvalFrameDefault on MSVC for PGO (#111794)
In PGO mode, this function caused a compiler error in MSVC.
It turns out that optimizing for space only save the day, and is even faster.
However, without PGO, this is neither necessary nor slower.
Victor Stinner [Thu, 9 Nov 2023 15:00:10 +0000 (16:00 +0100)]
gh-111881: Import doctest lazily in libregrtest (#111884)
In most cases, doctest is not needed. So don't always import it at
startup. The change reduces the number of modules already
imported when a test is run.
Brett Cannon [Thu, 9 Nov 2023 01:20:35 +0000 (17:20 -0800)]
GH-111804: Drop posix.fallocate() under WASI (GH-111869)
Drop posix.fallocate() under WASI.
The underlying POSIX function, posix_fallocate(), was found to vary too
much between implementations to remain in WASI. As such, while it was
available in WASI preview1, it's been dropped in preview2.
Sam Gross [Wed, 8 Nov 2023 22:39:29 +0000 (17:39 -0500)]
gh-111569: Implement Python critical section API (gh-111571)
Critical sections are helpers to replace the global interpreter lock
with finer grained locking. They provide similar guarantees to the GIL
and avoid the deadlock risk that plain locking involves. Critical
sections are implicitly ended whenever the GIL would be released. They
are resumed when the GIL would be acquired. Nested critical sections
behave as if the sections were interleaved.
gh-68166: Tkinter: Add tests and examples for element_create() (GH-111453)
* Remove mention of "vsapi" element type from the documentation.
* Add tests for element_create() and other ttk.Style methods.
* Add examples for element_create() in the documentation.