Serhiy Storchaka [Tue, 19 Mar 2024 17:26:32 +0000 (19:26 +0200)]
gh-90300: Improve the Python CLI help output (GH-115853)
* document equivalent command-line options for all environment variables
* document equivalent environment variables for all command-line options
* reduce the size of variable and option descriptions to minimum
* remove the ending period in single-sentence descriptions
Co-authored-by: Éric <merwok@netwok.org> Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Victor Stinner [Tue, 19 Mar 2024 14:04:23 +0000 (15:04 +0100)]
gh-116417: Move limited C API long.c tests to _testlimitedcapi (#117001)
* Split long.c tests of _testcapi into two parts: limited C API tests
in _testlimitedcapi and non-limited C API tests in _testcapi.
* Move testcapi_long.h from Modules/_testcapi/ to
Modules/_testlimitedcapi/.
* Add MODULE__TESTLIMITEDCAPI_DEPS to Makefile.pre.in.
Victor Stinner [Tue, 19 Mar 2024 14:03:27 +0000 (15:03 +0100)]
gh-92906: Enable test_cext and test_cppext on Windows (#117000)
On Windows in release mode, the test_cext and test_cppext can now
build C and C++ extensions.
* test_cext now also builds the C extension without options.
* test_cppext now also builds the C++ extension without options.
* Add C++14 test to test_cppext; C++11 is not supported by MSVC.
* Make setup_venv_with_pip_setuptools_wheel() quiet when
support.verbose is false. Only show stdout and stderr on failure.
gh-116957: configparser: Do post-process values after DuplicateOptionError (GH-116958)
If you catch DuplicateOptionError / DuplicateSectionError when reading a
config file (the intention is to skip invalid config files) and then
attempt to use the ConfigParser instance, any values it *had* read
successfully so far, were stored as a list instead of string! Later
`get` calls would raise "AttributeError: 'list' object has no attribute
'find'" from somewhere deep in the interpolation code.
These give applications the option of more forcefully terminating client
connections for asyncio servers. Useful when terminating a service and
there is limited time to wait for clients to finish up their work.
This is a do-over with a test fix for gh-114432, which was reverted.
Keep Tools/build/deepfreeze.py around (we may repurpose it for deepfreezing non-code objects),
and keep basic "clean" targets that remove the output of former deep-freeze activities,
to keep the build directories of current devs clean.
Guido van Rossum [Mon, 18 Mar 2024 18:11:10 +0000 (11:11 -0700)]
gh-116916: Remove separate next_func_version counter (#116918)
Somehow we ended up with two separate counter variables tracking "the next function version".
Most likely this was a historical accident where an old branch was updated incorrectly.
This PR merges the two counters into a single one: `interp->func_state.next_version`.
Zachary Ware [Mon, 18 Mar 2024 17:07:25 +0000 (12:07 -0500)]
gh-115119: Switch Windows build to mpdecimal external (GH-115182)
This includes adding what should be a relatively temporary
`Modules/_decimal/windows/mpdecimal.h` shim to choose between `mpdecimal32vc.h`
or `mpdecimal64vc.h` based on which of `CONFIG_64` or `CONFIG_32` is defined.
Victor Stinner [Mon, 18 Mar 2024 16:14:42 +0000 (17:14 +0100)]
gh-116869: Fix redefinition of the _PyOptimizerObject type (#116963)
Defining a type twice is a C11 feature and so makes the C API
incompatible with C99. Fix the issue by only defining the type once.
Example of warning (treated as an error):
In file included from Include/Python.h:122:
Include/cpython/optimizer.h:77:3: error: redefinition of typedef
'_PyOptimizerObject' is a C11 feature [-Werror,-Wtypedef-redefinition]
} _PyOptimizerObject;
^
build/Include/cpython/optimizer.h:60:35: note: previous definition is here
typedef struct _PyOptimizerObject _PyOptimizerObject;
^
kernc [Mon, 18 Mar 2024 15:13:02 +0000 (16:13 +0100)]
gh-71765: Fix inspect.getsource() on empty file (GH-20809)
* bpo-27578: Fix inspect.getsource() on empty file
For modules from empty files, `inspect.getsource()` now
returns an empty string, and `inspect.getsourcelines()` returns
a list of one empty string, fixing the expected invariant.
As indicated by `exec('')`, empty strings are valid Python
source code.
Jakub Stasiak [Mon, 18 Mar 2024 12:57:00 +0000 (13:57 +0100)]
GH-65056: Improve the IP address' is_global/is_private documentation (GH-113186)
* GH-65056: Improve the IP address' is_global/is_private documentation
It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).
Terry Jan Reedy [Mon, 18 Mar 2024 09:31:13 +0000 (05:31 -0400)]
gh-116881: Remove erroneous or redundant grammar NULL (GH-116885)
In Lexical Analysis f-strings section, NULL in the description
of 'literal character' means '\0'. In the format_spec grammar
production, it is wrong with that meaning and redundant if
instead interpreted as <nothing>. Remove it there.
mpage [Mon, 18 Mar 2024 08:40:16 +0000 (01:40 -0700)]
gh-116915: Make `_thread._ThreadHandle` support GC (#116934)
Even though it has no internal references to Python objects it still
has a reference to its type by virtue of being a heap type. We need
to provide a traverse function that visits the type, but we do not
need to provide a clear function.
Barney Gale [Sun, 17 Mar 2024 17:09:35 +0000 (17:09 +0000)]
GH-116377: Stop raising `ValueError` from `glob.translate()`. (#116378)
Stop raising `ValueError` from `glob.translate()` when a `**` sub-string
appears in a non-recursive pattern segment. This matches `glob.glob()`
behaviour.
mpage [Sat, 16 Mar 2024 12:56:30 +0000 (05:56 -0700)]
gh-114271: Fix race in `Thread.join()` (#114839)
There is a race between when `Thread._tstate_lock` is released[^1] in `Thread._wait_for_tstate_lock()`
and when `Thread._stop()` asserts[^2] that it is unlocked. Consider the following execution
involving threads A, B, and C:
1. A starts.
2. B joins A, blocking on its `_tstate_lock`.
3. C joins A, blocking on its `_tstate_lock`.
4. A finishes and releases its `_tstate_lock`.
5. B acquires A's `_tstate_lock` in `_wait_for_tstate_lock()`, releases it, but is swapped
out before calling `_stop()`.
6. C is scheduled, acquires A's `_tstate_lock` in `_wait_for_tstate_lock()` but is swapped
out before releasing it.
7. B is scheduled, calls `_stop()`, which asserts that A's `_tstate_lock` is not held.
However, C holds it, so the assertion fails.
The race can be reproduced[^3] by inserting sleeps at the appropriate points in
the threading code. To do so, run the `repro_join_race.py` from the linked repo.
There are two main parts to this PR:
1. `_tstate_lock` is replaced with an event that is attached to `PyThreadState`.
The event is set by the runtime prior to the thread being cleared (in the same
place that `_tstate_lock` was released). `Thread.join()` blocks waiting for the
event to be set.
2. `_PyInterpreterState_WaitForThreads()` provides the ability to wait for all
non-daemon threads to exit. To do so, an `is_daemon` predicate was added to
`PyThreadState`. This field is set each time a thread is created. `threading._shutdown()`
now calls into `_PyInterpreterState_WaitForThreads()` instead of waiting on
`_tstate_lock`s.
Serhiy Storchaka [Sat, 16 Mar 2024 11:31:19 +0000 (13:31 +0200)]
gh-116484: Fix collisions between Checkbutton and ttk.Checkbutton default names (GH-116495)
Change automatically generated tkinter.Checkbutton widget names to
avoid collisions with automatically generated tkinter.ttk.Checkbutton
widget names within the same parent widget.
Zackery Spytz [Fri, 15 Mar 2024 14:38:13 +0000 (07:38 -0700)]
gh-63283: IDNA prefix should be case insensitive (GH-17726)
Any capitalization of "xn--" should be acceptable for the ACE prefix
(see https://tools.ietf.org/html/rfc3490#section-5).
Co-authored-by: Pepijn de Vos <pepijndevos@gmail.com> Co-authored-by: Erlend E. Aasland <erlend@python.org> Co-authored-by: Petr Viktorin <encukou@gmail.com>
Since 3.12, allocating a GC object cannot immediately trigger GC. This
allows us to simplify the logic for creating the canonical callback-less
weakref.
vxiiduu [Thu, 14 Mar 2024 23:09:36 +0000 (09:09 +1000)]
gh-116195: Implements a fast path for nt.getppid (GH-116205)
Use the NtQueryInformationProcess system call to efficiently retrieve the parent process ID in a single step, rather than using the process snapshots API which retrieves large amounts of unnecessary information and is more prone to failure (since it makes heap allocations).
Includes a fallback to the original win32_getppid implementation in case the unstable API appears to return strange results.
* Move Block and BlockParser classes to a new libclinic.block_parser
module.
* Move Language and PythonLanguage classes to a new
libclinic.language module.
Victor Stinner [Thu, 14 Mar 2024 15:42:41 +0000 (16:42 +0100)]
gh-88494: Use QueryPerformanceCounter() for time.monotonic() (#116781)
On Windows, time.monotonic() now uses the QueryPerformanceCounter()
clock to have a resolution better than 1 us, instead of the
gGetTickCount64() clock which has a resolution of 15.6 ms.