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>
* bugfix: let the HTTP- and HTTPSHandlers respect the value of http.client.HTTPConnection.debuglevel
* add tests
* add news
* ReSTify NEWS and reword a bit.
* Address Review Comments.
* Use mock.patch.object instead of settting the module level value.
* Used test values to assert the debuglevel.
---------
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Co-authored-by: Senthil Kumaran <senthil@python.org>
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>
We no longer add a root to device paths such as `//./PhysicalDrive0`,
`//?/BootPartition` and `//./c:` while normalizing. We also avoid adding a
root to incomplete UNC share paths, like `//`, `//a` and `//a/`.
Co-authored-by: Eryk Sun <eryksun@gmail.com>
Fixes unittest.mock.patch not enforcing function signatures for methods
decorated with @classmethod or @staticmethod when patch is called with
autospec=True.
* The majority of the monitoring code is in instrumentation.c
* The new instrumentation bytecodes are in bytecodes.c
* legacy_tracing.c adapts the new API to the old sys.setrace and sys.setprofile APIs
* Made all the command part of the docstring match the official documentation
* Always have a space between the command and the description in docstring
* Added a helper function to format the help message
Before:
```
(Pdb) h a
a(rgs)
Print the argument list of the current function.
(Pdb) h commands
commands [bpnumber]
(com) ...
(com) end
(Pdb)
...
(Pdb) h interact
interact
Start an interactive interpreter whose global namespace
contains all the (global and local) names found in the current scope.
```
After
```
(Pdb) h a
Usage: a(rgs)
Print the argument list of the current function.
(Pdb) h commands
Usage: (Pdb) commands [bpnumber]
(com) ...
(com) end
(Pdb)
...
(Pdb) h interact
Usage: interact
Start an interactive interpreter whose global namespace
contains all the (global and local) names found in the current scope.
```
Automerge-Triggered-By: GH:brandtbucher
Improve performance of path construction by skipping the addition of the path anchor (`drive + root`) to the internal `_parts` list. Rename this attribute to `_tail` for clarity.
* Quote paths in os.spawn tests on Windows so they work with spaces
* Add NEWS entry for os spawn test fix
* Fix code style to avoid double negative in os.spawn tests
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
---------
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Set `SHELL = /bin/sh -e` to ensure that complex recipes fail on the first error rather than incorrectly reporting success.
Co-authored-by: Zachary Ware <zach@python.org>
Several platforms don't define the static_assert macro despite having
compiler support for the _Static_assert keyword. The macro needs to be
defined since it is used unconditionally in the Python code. So it
should always be safe to define it if undefined and not in C++11 (or
later) mode.
Hence, remove the checks for particular platforms or libc versions,
and just define static_assert anytime it needs to be defined but isn't.
That way, all platforms that need the fix will get it, regardless of
whether someone specifically thought of them.
Also document that certain macOS versions are among the platforms that
need this.
The C2x draft (currently expected to become C23) makes static_assert
a keyword to match C++. So only define the macro for up to C17.
Co-authored-by: Victor Stinner <vstinner@python.org>
* bpo-22708: Upgrade HTTP CONNECT to protocol HTTP/1.1 (GH-NNNN)
Use protocol HTTP/1.1 when sending HTTP CONNECT tunnelling requests;
generate Host: headers if one is not already provided (required by
HTTP/1.1), convert IDN domains to punycode in HTTP CONNECT requests.
* Refactor tests to pass under -bb (fix ByteWarnings); missed some lines >80.
* Use consistent 'tunnelling' spelling in Lib/http/client.py
* Lib/test/test_httplib: Remove remnant of obsoleted test.
* Use dict.copy() not copy.copy()
* fix version changed
* Update Lib/http/client.py
Co-authored-by: bgehman <bgehman@users.noreply.github.com>
* Switch to for/else: syntax, as suggested
* Don't use for: else:
* Sure, fine, w/e
* Oops
* 1nm to the left
---------
Co-authored-by: Éric <merwok@netwok.org>
Co-authored-by: bgehman <bgehman@users.noreply.github.com>
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
Fix an issue where `__new__()` and `__init__()` were not called on subclasses of `pathlib.PurePath` and `Path` in some circumstances.
Paths are now normalized on-demand. This speeds up path construction, `p.joinpath(q)`, and `p / q`.
Co-authored-by: Steve Dower <steve.dower@microsoft.com>
On content update, builds `python` and the docs. Also adds a Dockerfile that should include everything but autoconf 2.69 that's necessary to build CPython and the entire stdlib on Fedora.
Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>
Co-authored-by: Dusty Phillips <dusty@phillips.codes>
There are some warnings if build python via clang:
Parser/pegen.c:812:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
_PyPegen_clear_memo_statistics()
^
void
Parser/pegen.c:820:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
_PyPegen_get_memo_statistics()
^
void
Fix it to make clang happy.
Signed-off-by: Chenxi Mao <chenxi.mao@suse.com>
This commit prefixes `__dataclass` to several things in the locals dict:
- Names like `_dflt_` (which cause trouble, see first test)
- Names like `_type_` (not known to be able to cause trouble)
- `_return_type` (not known to able to cause trouble)
- `_HAS_DEFAULT_FACTORY` (which causes trouble, see second test)
In addition, this removes `MISSING` from the locals dict. As far as I can tell, this wasn't needed even in the initial implementation of dataclasses.py (and tests on that version passed with it removed). This makes me wary :-)
This is basically a continuation of #96151, where fixing this was welcomed in https://github.com/python/cpython/pull/98143#issuecomment-1280306360
In PEM, we need to parse until error and then suppress `PEM_R_NO_START_LINE`, because PEM allows arbitrary leading and trailing data. DER, however, does not. Parsing until error and suppressing `ASN1_R_HEADER_TOO_LONG` doesn't quite work because that error also covers some cases that should be rejected.
Instead, check `BIO_eof` early and stop the loop that way.
Automerge-Triggered-By: GH:Yhg1s
Previously, this used to fail:
```py
from typing import *
T = TypeVar("T")
P = ParamSpec("P")
class X(Generic[P]):
f: Callable[P, int]
Y = X[[int, T]]
Z = Y[str]
```
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Also use `raise TimeOut from <CancelledError instance>` so that the CancelledError is set
in the `__cause__` field rather than in the `__context__` field.
Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
* Eliminate all remaining uses of Py_SIZE and Py_SET_SIZE on PyLongObject, adding asserts.
* Change layout of size/sign bits in longobject to support future addition of immortal ints and tagged medium ints.
* Add functions to hide some internals of long object, and for setting sign and digit count.
* Replace uses of IS_MEDIUM_VALUE macro with _PyLong_IsCompact().
Use a stack to implement `pathlib.Path.walk()` iteratively instead of recursively to avoid hitting recursion limits on deeply nested trees.
Co-authored-by: Barney Gale <barney.gale@gmail.com>
Co-authored-by: Brett Cannon <brett@python.org>
Christopher Chavez
Senthil Kumaran
James Hilton-Balfe
Dong-hee Na
Adrian Garcia Badaracco
Nikita Sobolev
Eddie Elizondo
Eric Wieser
Rafael Fontenelle
Paul Moore
Jason R. Coombs
Wheeler Law
Alexander Belopolsky
Pablo Galindo Salgado
Irit Katriel
Ethan Furman
Pradyun Gedam
AN Long
chgnrdv
Barney Gale
Zachary Ware
Mark Shannon
Tomas R
Ali-Akber Saifee
Skip Montanaro
Stanislav Syekirin
Erlend E. Aasland
Bar Harel
Tian Gao
David Ellis
raylu
C.A.M. Gerlach
Tomáš Hrnčiar
Russell Keith-Magee
Alex Waygood
Michał Górny
Brett Cannon
Jeffrey Newman
Brandt Bucher
Joshua Root
Yeojin Kim
Michael Handler
Charles Machalow
Ned Deily
Thomas Wouters
Steve Dower
Shantanu
Giampaolo Rodola
James De Bias
Furkan Onder
Jeong, YunWon
Bernhard Wagner
Chenxi Mao
Oleg Iarygin
JakobDev
David Benjamin
Hugo van Kemenade
MonadChains
Kristján Valur Jónsson
Stanislav Zmiev