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262 commits

Author SHA1 Message Date
Chris Eibl
306c556fdb
gh-144319: obtain SeLockMemoryPrivilege on Windows (#144928) 2026-03-23 23:00:26 +00:00
Lysandros Nikolaou
7a1da4575b
gh-142518: Improve mimalloc allocator docs (#145224) 2026-03-11 15:14:47 +01:00
Hugo van Kemenade
6024d3c6da Python 3.15.0a7 2026-03-10 14:31:15 +02:00
Stan Ulbrych
bdf0105291
gh-103997: Remove incorrect statements about -c dedenting (gh-138624) 2026-03-10 09:56:00 +01:00
Filipe Laíns
eb611a8515
GH-145275: add -X pathconfig_warnings and PYTHON_PATHCONFIG_WARNINGS (#145277) 2026-03-02 19:19:05 +00:00
Thomas A Caswell
201d251567
DOC: clarify and expand documentation about PYTHONUSERBASE and PYTHONNOUSERSITE (#144637) 2026-03-02 15:54:26 +00:00
indoor47
11eec7a492
gh-145305: Update ocert.org URLs in docs from http to https (#145304) 
Co-authored-by: Adam (indoor47) <adamai@agentmail.to>
 2026-02-27 18:24:39 +02:00
Pablo Galindo Salgado
46d5106cfa
gh-142349: Implement PEP 810 - Explicit lazy imports (#142351) 
Co-authored-by: T. Wouters <twouters@meta.com >
Co-authored-by: Brittany Reynoso <breynoso@meta.com>
Co-authored-by: Dino Viehland <dinoviehland@meta.com>
 2026-02-12 00:15:33 +00:00
Hugo van Kemenade
15b216f30d Python 3.15.0a6 2026-02-11 14:23:15 +02:00
Pablo Galindo Salgado
96e4cd698a
gh-144319: Fix huge page safety in pymalloc arenas (#144331) 
The pymalloc huge page support had two problems. First, on
architectures where the default huge page size exceeds the arena
size (e.g. 32 MiB on PPC, 512 MiB on ARM64 with 64 KB base
pages), mmap with MAP_HUGETLB silently allocates a full huge page
even when the requested size is smaller. The subsequent munmap
with the original arena size then fails with EINVAL, permanently
leaking the entire huge page. Second, huge pages were always
attempted when compiled in, with no way to disable them at
runtime. On Linux, if the huge page pool is exhausted, page
faults including copy-on-write faults after fork deliver SIGBUS
and kill the process.

The arena allocator now queries the system huge page size from
/proc/meminfo and skips MAP_HUGETLB when the arena size is not a
multiple of it. Huge pages also now require explicit opt-in at
runtime via the PYTHON_PYMALLOC_HUGEPAGES environment variable,
which is read through PyConfig and respects -E and -I flags.
The config field pymalloc_hugepages is propagated to the runtime
allocators struct so the low-level arena allocator can check it
without calling getenv directly.
 2026-01-30 18:18:56 +00:00
Hugo van Kemenade
aeff92d86a Python 3.15.0a1 2025-10-14 13:46:08 +03:00
Bartosz Sławecki
0344db8d60
gh-131189: Remove curses mention from PYTHON_BASIC_REPL docs (#140022) 
The `curses` dependency for the default REPL has been removed
in 09dfb50f1b.
 2025-10-13 10:40:39 +02:00
Serhiy Storchaka
cf9ef73121
gh-134716: Support regular expressions in -W and PYTHONWARNINGS (GH-138149) 2025-09-16 17:06:44 +00:00
sobolevn
1c984ba953
gh-136355: Deprecate -b and -bb CLI flags in 3.15 (#136363) 
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
 2025-09-14 20:00:03 +03:00
Stan Ulbrych
b3ff3165d2
gh-89905: Correct -R option doc (#137608) 2025-09-01 19:58:25 +02:00
Brian Schubert
34ce1920ca
Docs: Fix duplicate word typos (GH-135958) 2025-06-26 20:00:19 -04:00
mpage
fea5ccc55d
gh-135805: Document the X option and env var for controlling thread-local bytecode (#135868) 
Document the X option and env var for controlling thread-local bytecode.
 2025-06-24 10:02:50 -07:00
Hugo van Kemenade
b092705907 Python 3.14.0b1 2025-05-06 18:33:52 +03:00
Noah Kim
c4bcc6a778
gh-102567: Add -X importtime=2 for logging an importtime message for already-loaded modules (#118655) 
Co-authored-by: Adam Turner <9087854+aa-turner@users.noreply.github.com>
 2025-05-06 01:03:55 +01:00
Brandt Bucher
b1aa515bd6
GH-133231: Add JIT utilities in sys._jit (GH-133233) 2025-05-05 15:25:22 -07:00
Adam Turner
4c56563f7a
GH-133336: Remove reserved `-J` flag for Jython (#133444) 2025-05-05 15:09:19 +00:00
Jon Crall
fc0ec29889
gh-103997: Automatically dedent the argument to "-c" (#103998) 
Co-authored-by: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>
Co-authored-by: Kirill Podoprigora <80244920+Eclips4@users.noreply.github.com>
Co-authored-by: Inada Naoki <songofacandy@gmail.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
 2025-04-18 17:39:30 +09:00
Neil Schemenauer
d687900f98
gh-128384: Use a context variable for warnings.catch_warnings (gh-130010) 
Make `warnings.catch_warnings()` use a context variable for holding
the warning filtering state if the `sys.flags.context_aware_warnings`
flag is set to true.  This makes using the context manager thread-safe in
multi-threaded programs.

Add the `sys.flags.thread_inherit_context` flag.  If true, starting a new
thread with `threading.Thread` will use a copy of the context
from the caller of `Thread.start()`.

Both these flags are set to true by default for the free-threaded build
and false for the default build.

Move the Python implementation of warnings.py into _py_warnings.py.

Make _contextvars a builtin module.

Co-authored-by: Kumar Aditya <kumaraditya@python.org>
 2025-04-09 16:18:54 -07:00
Hugo van Kemenade
29af6cee02 Python 3.14.0a7 2025-04-08 14:20:51 +03:00
Pablo Galindo Salgado
943cc1431e
gh-131591: Implement PEP 768 (#131937) 
Co-authored-by: Ivona Stojanovic <stojanovic.i@hotmail.com>
Co-authored-by: Matt Wozniski <godlygeek@gmail.com>
 2025-04-03 16:20:01 +01:00
Michael Kashirin
f18b226492
gh-126172: Fix a misleading statement in PYTHON_BASIC_REPL documentation (#127203) 
Fix a misleading statement in PYTHON_BASIC_REPL documentation.
 2025-01-21 20:05:19 +00:00
Hugo van Kemenade
23f2e8f13c
gh-127221: Add colour to unittest output (#127223) 
Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>
 2024-12-05 21:10:46 +02:00
Peter Bierma
84ad264ce6
gh-123275: Support -Xgil=1 and PYTHON_GIL=1 on non-free-threaded builds (gh-123276) 2024-09-06 08:53:47 +09:00
Wei-Hsiang (Matt) Wang
103a0470e3
gh-123492: Remove unnecessary :func: parentheses (#123493) 2024-08-30 14:34:09 +03:00
Adam Turner
db6f5e1933
GH-109975: Copyedit 3.13 What's New: Release Highlights (#122958) 
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
 2024-08-13 15:30:59 +01:00
Wim Jeantine-Glenn
c25898d51e
Doc: cmdline.rst: Include -P and -R in usage (#122590) 
* ``-P``: safe path (https://docs.python.org/3/using/cmdline.html#cmdoption-P)
* ``-R``: hash randomization (https://docs.python.org/3/using/cmdline.html#cmdoption-R)
 2024-08-07 16:01:44 +01:00
Łukasz Langa
dc93d1125f
gh-121957: Emit audit events for python -i and python -m asyncio (GH-121958) 
Relatedly, emit the `cpython.run_startup` event from the Python version of
`PYTHONSTARTUP` handling.
 2024-07-22 13:04:08 +02:00
Wim Jeantine-Glenn
0a1e8ff9c1
gh-121101: Document -Wall option (an alias for -Walways) (#121102) 2024-06-29 12:10:13 +05:30
Brett Simmers
9fa206aaec
Docs: Add central references to free-threading-related options (#119017) 2024-05-21 17:49:23 -04:00
Melanie Arbor
172690227e
gh-102136: Add -m to options that work with -i (GH-119271) 
* GH-102136: Add -m to options that work with -i

* Linting
 2024-05-20 19:38:33 -04:00
Hugo van Kemenade
04859228aa
gh-118518: Rename PYTHONPERFJITSUPPORT and -X perfjit with underscores (#118693) 2024-05-07 11:47:21 +00:00
Pablo Galindo Salgado
f27f8c790a
gh-111201: A new Python REPL (GH-111567) 
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Co-authored-by: Marta Gómez Macías <mgmacias@google.com>
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
 2024-05-05 21:32:23 +02:00
Pablo Galindo Salgado
1b22d801b8
gh-118518: Allow perf to work without frame pointers (#112254) 2024-05-05 03:07:29 +02:00
Hugo van Kemenade
164e2c31c0
gh-117225: Document colour use in doctest (#118268) 2024-05-01 12:25:11 -06:00
Serhiy Storchaka
10f1a2687a
gh-115664: Reorganize versionadded directives for -X options (GH-116304) 
Add the versionadded directives just under the description of the
corresponding option.
 2024-04-15 18:01:17 +03:00
Serhiy Storchaka
33662d4e01
gh-90300: Fix cmdline.rst (GH-116721) 
* Fix the description of the "-b" option.
* Add references to environment variables for "-s" and "-X dev" options.
 2024-03-13 15:03:13 +02:00
Brett Simmers
2731913dd5
gh-116167: Allow disabling the GIL with PYTHON_GIL=0 or -X gil=0 (#116338) 
In free-threaded builds, running with `PYTHON_GIL=0` will now disable the
GIL. Follow-up issues track work to re-enable the GIL when loading an
incompatible extension, and to disable the GIL by default.

In order to support re-enabling the GIL at runtime, all GIL-related data
structures are initialized as usual, and disabling the GIL simply sets a flag
that causes `take_gil()` and `drop_gil()` to return early.
 2024-03-11 11:02:58 -04:00
Serhiy Storchaka
808a77612f
gh-115664: Fix ordering of more versionadded and versionchanged directives (GH-116298) 2024-03-07 10:05:03 +02:00
Ned Batchelder
30b7b4f73c
Docs: 'still' is a better word than 'nonetheless' (#114598) 2024-01-26 13:42:49 +00:00
Serhiy Storchaka
a8629816c6
gh-113664: Improve style of Big O notation (GH-113695) 
Use cursive to make it looking like mathematic formulas.
 2024-01-10 15:01:18 +02:00
Zackery Spytz
f19b93fce0
gh-73965: New environment variable PYTHON_HISTORY (#13208) 
It can be used to set the location of a .python_history file

---------

Co-authored-by: Levi Sabah <0xl3vi@gmail.com>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
 2024-01-06 22:30:12 -08:00
Hugo van Kemenade
12f0bbd6e0
gh-112730: Update docs for colour env vars (#112837) 2023-12-14 13:36:48 +02:00
Serhiy Storchaka
fe9991bb67
gh-112999: Replace the outdated "deprecated" directives with "versionchanged" (GH-113000) 2023-12-12 18:31:04 +02:00
Pablo Galindo Salgado
16448cab44
gh-112730: Use color to highlight error locations (gh-112732) 
Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
 2023-12-06 23:29:54 +01:00
Yilei Yang
45a36d5f56
gh-111374: Add a new PYTHON_FROZEN_MODULES env var, equivalent of -X frozen_modules. (#111411) 
Adds a new PYTHON_FROZEN_MODULES env var to correspond with -X frozen_modules.

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
 2023-11-01 20:39:31 +00:00