When Python is built in debug mode (if the Py_REF_DEBUG macro is
defined), the Py_INCREF() and Py_DECREF() function are now always
implemented as opaque functions to avoid leaking implementation
details like the "_Py_RefTotal" variable or the
_Py_DecRefTotal_DO_NOT_USE_THIS() function.
* Remove _Py_IncRefTotal_DO_NOT_USE_THIS() and
_Py_DecRefTotal_DO_NOT_USE_THIS() from the stable ABI.
* Remove _Py_NegativeRefcount() from limited C API.
Disallow thread creation and fork at interpreter finalization.
in the following functions, check if interpreter is finalizing and raise `RuntimeError` with appropriate message:
* `_thread.start_new_thread` and thus `threading`
* `posix.fork`
* `posix.fork1`
* `posix.forkpty`
* `_posixsubprocess.fork_exec` when a `preexec_fn=` is supplied.
---------
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Remove functions in the C API:
* PyEval_AcquireLock()
* PyEval_ReleaseLock()
* PyEval_InitThreads()
* PyEval_ThreadsInitialized()
But keep these functions in the stable ABI.
Mention "make regen-limited-abi" in "make regen-all".
* refcounts.dat:
* Remove Py_UNICODE functions.
* Replace Py_UNICODE argument type with wchar_t.
* _PyUnicode_ToLowercase(), _PyUnicode_ToUppercase(),
_PyUnicode_ToTitlecase() are no longer deprecated in comments.
It's no longer needed since they now use Py_UCS4 type, rather than
the deprecated Py_UNICODE type.
* gdb: Remove unused char_width() method.
Remove the following old functions to configure the Python
initialization, deprecated in Python 3.11:
* PySys_AddWarnOptionUnicode()
* PySys_AddWarnOption()
* PySys_AddXOption()
* PySys_HasWarnOptions()
* PySys_SetArgvEx()
* PySys_SetArgv()
* PySys_SetPath()
* Py_SetPath()
* Py_SetProgramName()
* Py_SetPythonHome()
* Py_SetStandardStreamEncoding()
* _Py_SetProgramFullPath()
Most of these functions are kept in the stable ABI, except:
* Py_SetStandardStreamEncoding()
* _Py_SetProgramFullPath()
Update Doc/extending/embedding.rst and Doc/extending/extending.rst to
use the new PyConfig API.
_testembed.c:
* check_stdio_details() now sets stdio_encoding and stdio_errors
of PyConfig.
* Add definitions of functions removed from the API but kept in the
stable ABI.
* test_init_from_config() and test_init_read_set() now use
PyConfig_SetString() instead of PyConfig_SetBytesString().
Remove _Py_ClearStandardStreamEncoding() internal function.
Deprecate the old Py_UNICODE and PY_UNICODE_TYPE types in the C API:
use wchar_t instead.
Replace Py_UNICODE with wchar_t in multiple C files.
Co-authored-by: Inada Naoki <songofacandy@gmail.com>
Add ".. class::" markups in the wave documentation.
* Reformat also wave.py (minor PEP 8 changes).
* Remove redundant "import struct": it's already imported at top
level.
* Remove wave.rst from .nitignore
`PurePath.match()` now handles the `**` wildcard as in `Path.glob()`, i.e. it matches any number of path segments.
We now compile a `re.Pattern` object for the entire pattern. This is made more difficult by `fnmatch` not treating directory separators as special when evaluating wildcards (`*`, `?`, etc), and so we arrange the path parts onto separate *lines* in a string, and ensure we don't set `re.DOTALL`.
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Add a keyword-only *follow_symlinks* parameter to `pathlib.Path.glob()` and`rglob()`.
When *follow_symlinks* is `None` (the default), these methods follow symlinks except when evaluating "`**`" wildcards. When set to true or false, symlinks are always or never followed, respectively.
* Remove the Lib/test/imghdrdata/ directory.
* Copy 5 pictures (gif, png, ppm, pgm, xbm) from removed
Lib/test/imghdrdata/ to a new Lib/test/tkinterdata/ directory.
* Update Sphinx from 4.5 to 6.2 in Doc/requirements.txt.
On Linux where the `subprocess` module can use the `vfork` syscall for
faster spawning, prevent the parent process from blocking other threads
by dropping the GIL while it waits for the vfork'ed child process `exec`
outcome. This prevents spawning a binary from a slow filesystem from
blocking the rest of the application.
Fixes#104372.
* socket_helper.transient_internet() no longer imports nntplib to
catch nntplib.NNTPTemporaryError.
* ssltests.py no longer runs test_nntplib.
* "make quicktest" no longer runs test_nntplib.
* WASM: remove nntplib from OMIT_NETWORKING_FILES.
* Remove mentions to nntplib in the email documentation.
In Python 3.8 and prior, `pathlib.Path.__exit__()` marked a path as closed;
some subsequent attempts to perform I/O would raise an IOError. This
functionality was never documented, and had the effect of making `Path`
objects mutable, contrary to PEP 428. In Python 3.9 we made `__exit__()` a
no-op, and in 3.11 `__enter__()` began raising deprecation warnings. Here
we remove both methods.
Apply BOLT optimizations to libpython for shared builds. Most of the C
code is in libpython so it is critical to apply BOLT there fully realize
BOLT benefits.
This change also reworks how BOLT instrumentation is applied. It
effectively removes the readelf based logic added in gh-101525 and
replaces it with a mechanism that saves a copy of the pre-bolt binary
and restores that copy when necessary. This allows us to perform BOLT
optimizations without having to manually delete the output binary to
force a new bolt run.
Also:
- add a clean-bolt target for purging BOLT files and hook that up to the
clean target
- .gitignore BOLT related files
Before and after this refactor, `make` will no-op after a previous run.
Both versions should also share common make DAG deficiencies where
targets fail to trigger as often as they need to or can trigger
prematurely in certain scenarios. e.g. after this change you may need to
`rm profile-bolt-stamp` to force a BOLT run because there aren't
appropriate non-phony targets for BOLT's make target to depend on.
To make it easier to iterate on custom BOLT settings, the flags to pass
to instrumentation and application are now defined in configure and can
be overridden by passing BOLT_INSTRUMENT_FLAGS and BOLT_APPLY_FLAGS.
* Support for conversion specifiers o (octal) and X (uppercase hexadecimal).
* Support for length modifiers j (intmax_t) and t (ptrdiff_t).
* Length modifiers are now applied to all integer conversions.
* Support for wchar_t C strings (%ls and %lV).
* Support for variable width and precision (*).
* Support for flag - (left alignment).
- AnyStr can be used in type annotations, contrary to the section header
- Unpack can also be used in annotations, and its use is not restricted
to generics. It makes more sense with other building blocks like Required.
- Protocol is not necessarily generic.
Also fix the indentation for two notes associated with Concatenate.
Split off from #104642, but I think this change is independently an
improvement.
This commit replaces the Python implementation of the tokenize module with an implementation
that reuses the real C tokenizer via a private extension module. The tokenize module now implements
a compatibility layer that transforms tokens from the C tokenizer into Python tokenize tokens for backward
compatibility.
As the C tokenizer does not emit some tokens that the Python tokenizer provides (such as comments and non-semantic newlines), a new special mode has been added to the C tokenizer mode that currently is only used via
the extension module that exposes it to the Python layer. This new mode forces the C tokenizer to emit these new extra tokens and add the appropriate metadata that is needed to match the old Python implementation.
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
This PR updates `math.nextafter` to add a new `steps` argument. The behaviour is as though `math.nextafter` had been called `steps` times in succession.
---------
Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
New additions to the tty library. Functions added: cfmakeraw(), and cfmakecbreak(). The
functions setcbreak() and setraw() now return original termios to save an extra tcgetattr() call.
---------
Signed-off-by: Soumendra Ganguly <soumendraganguly@gmail.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Gregory P. Smith [Google LLC] <greg@krypto.org>
This adds a number of PRIO_DARWIN_* constants to the os module for use with os.setpriority.
---------
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Add http.client.HTTPConnection method get_proxy_response_headers() - this is a followup to https://github.com/python/cpython/pull/26152 which added it as a non-public attribute. This way we don't pre-compute a headers dictionary that most users will never access. The new method is properly public and documented and triggers full proxy header parsing into a dict only when actually called.
---------
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
This implements PEP 695, Type Parameter Syntax. It adds support for:
- Generic functions (def func[T](): ...)
- Generic classes (class X[T](): ...)
- Type aliases (type X = ...)
- New scoping when the new syntax is used within a class body
- Compiler and interpreter changes to support the new syntax and scoping rules
Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Co-authored-by: Eric Traut <eric@traut.com>
Co-authored-by: Larry Hastings <larry@hastings.org>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Use the unused keyword param in the converter to explicitly
mark an argument as unused:
/*[clinic input]
SomeBaseClass.stubmethod
flag: bool(unused=True)
[clinic start generated code]*/
* separate documentation and examples for both functions
* add examples demonstrating behaviour with unsupported types
* document return value of `get_origin` for `ParamSpecArgs` and `ParamSpecKwargs` instances
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Added example on how to use the HTTPConnection object for making GET request.
Original issue: https://github.com/python/cpython/issues/102327
---------
Co-authored-by: Éric <earaujo@caravan.coop>
`ast.Num`, `ast.Str`, `ast.Bytes`, `ast.Ellipsis` and `ast.NameConstant` now all emit deprecation warnings on import, access, instantation or `isinstance()` checks.
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* Uncomment builtin removal in pairindextypes
* Use new-style index directive ('builtin') - C API
* Use new-style index directive ('builtin') - Extending
* Use new-style index directive ('builtin') - Library
* Use new-style index directive ('builtin') - Reference
* Use new-style index directive ('builtin') - Tutorial
Add `pathlib.PurePath.with_segments()`, which creates a path object from arguments. This method is called whenever a derivative path is created, such as from `pathlib.PurePath.parent`. Subclasses may override this method to share information between path objects.
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
This argument allows case-sensitive matching to be enabled on Windows, and
case-insensitive matching to be enabled on Posix.
Co-authored-by: Steve Dower <steve.dower@microsoft.com>
* Uncomment object removal in pairindextypes
* Use new-style index directive ('object') - C API
* Use new-style index directive ('object') - Library
* Use new-style index directive ('object') - Reference
* Use new-style index directive ('object') - Tutorial
* Use new-style index directive ('module') - C API
* Use new-style index directive ('module') - Library
* Use new-style index directive ('module') - Reference
* Use new-style index directive ('module') - Tutorial
* Uncomment module removal in pairindextypes
* Use new-style index directive ('module') - C API
* Use new-style index directive ('module') - Library
* Use new-style index directive ('module') - Reference
* Remove deprecated classes from pkgutil
* Remove some other PEP 302 obsolescence
* Use find_spec instead of load_module
* Remove more tests of PEP 302 obsolete APIs
* Remove another bunch of tests using obsolete load_modules()
* Remove deleted names from __all__
* Remove obsolete footnote
* imp is removed
* Remove `imp` from generated stdlib names
* What's new and blurb
* Update zipimport documentation for the removed methods
* Fix some Windows tests
* Remove any test (or part of a test) that references `find_module()`.
* Use assertIsNone() / assertIsNotNone() consistently.
* Update Doc/reference/import.rst
* We don't need pkgutil._get_spec() any more either
* test.test_importlib.fixtures.NullFinder
* ...BadLoaderFinder.find_module
* ...test_api.InvalidatingNullFinder.find_module
* ...test.test_zipimport test of z.find_module
* Suppress cross-references to find_loader and find_module
* Suppress cross-references to Finder
* Suppress cross-references to pkgutil.ImpImporter and pkgutil.ImpLoader
---------
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
Co-authored-by: Adam Turner <9087854+aa-turner@users.noreply.github.com>
The bitwise inversion operator on bool returns the bitwise inversion of the
underlying int value; i.e. `~True == -2` such that `bool(~True) == True`.
It's a common pitfall that users mistake `~` as negation operator and actually
want `not`. Supporting `~` is an artifact of bool inheriting from int. Since there
is no real use-case for the current behavior, let's deprecate `~` on bool and
later raise an error. This removes a potential source errors for users.
Full reasoning: https://github.com/python/cpython/issues/82012#issuecomment-1258705971
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
I'd like to make the fact that this does nothing at runtime
really obvious, since I suspect this is unintuitive for users who are
unfamiliar with static type checking.
I thought of this because of
https://discuss.python.org/t/add-arg-check-type-to-types/26384
wherein I'm skeptical that the user really did want `assert_type`.
Add a `teleport` method to `turtle` module turtle instances that acts a lot like `goto`, _but_ ensures the pen is up while warping to the new position to and can control shape filling behavior as part of the jump.
Based on an educator user feature request.
---------
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
The default task name is "Task-<counter>" (if no name is passed in during Task creation).
This is initialized in `Task.__init__` (C impl) using string formatting, which can be quite slow.
Actually using the task name in real world code is not very common, so this is wasted init.
Let's defer this string formatting to the first time the name is read (in `get_name` impl),
so we don't need to pay the string formatting cost if the task name is never read.
We don't change the order in which tasks are assigned numbers (if they are) --
the number is set on task creation, as a PyLong instead of a formatted string.
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
- Fix description of MAKE_CELL, which appeared to be inverted from the
actual behavior
- Fix stray ".:" (sphinx-contrib/sphinx-lint#63)
- Fix inconsistent indentation
- Add some missing code blocks
- Slight style improvements
subprocess's communicate(None) closes stdin of the child process, after
sending no (extra) data. Make asyncio variant do the same.
This fixes issues with processes that waits for EOF on stdin before
continuing.
Using `datetime.datetime.utcnow()` and `datetime.datetime.utcfromtimestamp()` will now raise a `DeprecationWarning`.
We also have removed our internal uses of these functions and documented the change.
Clarify the docs of asyncio.loop.subprocess_exec()
Clarify the documentation of stdin, stdout and stderr arguments of
asyncio.loop.subprocess_exec().
Co-authored-by: Carol Willing <carolcode@willingconsulting.com>
Cc. @adriangb
The "stub documentation" in `types.rst` does already link to the
in-depth docs in `stdtypes.rst`, but the link isn't obvious for new
users. It deserves to be made more prominent.
- Issue: https://github.com/python/cpython/issues/103721
sockserver gains ForkingUnixStreamServer and ForkingUnixDatagramServer classes for consistency with all of the others. Ironically these existed but were buried in our test suite.
Addresses #103673
<!-- gh-issue-number: gh-103673 -->
* Issue: gh-103673
<!-- /gh-issue-number -->
---------
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
This speeds up `super()` (by around 85%, for a simple one-level
`super().meth()` microbenchmark) by avoiding allocation of a new
single-use `super()` object on each use.
This removes a section of the `strftime` and `strptime` documentation that refers to a bygone era when `strftime` would return an encoded byte string.
---------
Co-authored-by: Paul Ganssle <1377457+pganssle@users.noreply.github.com>
The new wording better reflects the cases where `datetime.strptime` differs from` time.strptime`.
---------
Co-authored-by: Paul Ganssle <git@m.ganssle.io>
The word 'dependent' is both an adjective and a noun. A 'dependant' is a British alternative spelling for the noun form. In idlelib.sidebar, 'OS-dependant' is an adjective and clearly wrong. In 'Using', 'dependant' as a noun would be acceptable in Britain, but we use American spellings in Python docs.
https://www.merriam-webster.com/words-at-play/spelling-variants-dependent-vs-dependant
This is the implementation of PEP683
Motivation:
The PR introduces the ability to immortalize instances in CPython which bypasses reference counting. Tagging objects as immortal allows up to skip certain operations when we know that the object will be around for the entire execution of the runtime.
Note that this by itself will bring a performance regression to the runtime due to the extra reference count checks. However, this brings the ability of having truly immutable objects that are useful in other contexts such as immutable data sharing between sub-interpreters.
* Doc: Fix broken links reported by linkcheck
* Apply suggestions from code review
- Remove extra diff line in faq/library.rst (merwok)
- Use HTTPS to link Unicode 15.0.0 to solve a redirect (hugovk)
- Use wayback machine link for openssl 1.1.0 instead of linking 1.1.1, "as this text mentions a feature from 1.1.0" (hugovk)
Co-authored-by: Éric <merwok@netwok.org>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Doc: Make mark-up code as literal
* Doc: Alphabetize items in linkcheck_ignore
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Doc: Improve comment in sphinx conf
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
---------
Co-authored-by: Éric <merwok@netwok.org>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
For example:
class Book(StrEnum):
title = auto()
author = auto()
desc = auto()
Book.author.desc is Book.desc
but
Book.author.title() == 'Author'
is commonly expected. Using upper-case member names avoids this confusion and possible performance impacts.
Co-authored-by: samypr100 <3933065+samypr100@users.noreply.github.com>
Remove the bundled setuptools wheel from ensurepip, and stop installing setuptools in environments created by venv.
Co-Authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
Victor Stinner
Jakub Kuczys
Hugo van Kemenade
Inada Naoki
Joe Geisbauer
Shantanu
chgnrdv
Nikita Sobolev
Irit Katriel
Erlend E. Aasland
Pablo Galindo Salgado
Carl Meyer
Barney Gale
Alex Waygood
Petr Viktorin
Steve Dower
Jelle Zijlstra
Zachary Ware
Raymond Hettinger
Shaygan Hooshyari
Mark Dickinson
Tomas R
Gregory P. Smith
Lysandros Nikolaou
Marta Gómez Macías
Nicolas Tessore
Robert O'Shea
Sebastian Rittau
Ned Deily
Brandt Bucher
Thomas Wouters
Mathieu Dupuy
Gregory Szorc
Serhiy Storchaka
Mark Shannon
gsallam
William Sawyer
Prince Roshan
han-solo
partev
Nyakku Shigure
Matthias Görgens
Soumendra Ganguly
Thomas Hisch
Ronald Oussoren
thirumurugan
Illia Volochii
Jesper Noordsij
Alexey Namyotkin
Terry Jan Reedy
Ned Batchelder
James Gerity
David Foster
Jacob Bower
Itamar Ostricher
Zhang Na
Adam Turner
Sam Morris
Gleb Smirnoff
Tian Gao
Barry Warsaw
Tim Hoffmann
andrei kulakov
Jurica Bradarić
Rafael Fontenelle
Anže Pečar
Ben Faulhaber
Liam Gersten
Olga Matoula
Marek Marczykowski-Górecki
Paul Ganssle
Stefano Rivera
Franek Magiera
Michael Blahay
Owain Davies
July Tikhonov
Carol Willing
Samuel Sloniker
Jaime Alonso Lorenzo
jb2170
Łukasz Langa
William Andrea
Howie Zhao
Furkan Onder
Allan Lago
Joshua Herman
Richard Hajek
Brett Simmers
Alex Gaynor
Stanley
Christopher Chavez
James Hilton-Balfe
Randy
Eddie Elizondo
Eric Wieser
Jason R. Coombs
Adrien
Kumar Aditya
Ethan Furman
zyckk4
yuki
Pradyun Gedam
Skip Montanaro
Giampaolo Rodola
AN Long
Boris Verkhovskiy