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>
This deprecates `st_ctime` fields on Windows, with the intent to change them to contain the correct value in 3.14. For now, they should keep returning the creation time as they always have.
* Replace known bad address pointing toward a malicious web page.
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
In line 1627, the end of the sentence reads "only that that it may be." but it should read "only that it may be" (or alternatively "only that that may be").
Co-authored-by: Hugo Gabriel Eyherabide <hugogabriel.eyherabide@gmail.com>
Since Mercurial removal from bitbucket.org, some links are broken.
They are replaced by github.com or webarchive.org links if available. Otherwise, they are removed.
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
The previous `_parse_args()` method pulled the `_parts` out of any supplied `PurePath` objects; these were subsequently joined in `_from_parts()` using `os.path.join()`. This is actually a slower form of joining than calling `fspath()` on the path object, because it doesn't take advantage of the fact that the contents of `_parts` is normalized!
This reduces the time taken to run `PurePath("foo", "bar")` by ~20%, and the time taken to run `PurePath(p, "cheese")`, where `p = PurePath("/foo", "bar", "baz")`, by ~40%.
Automerge-Triggered-By: GH:AlexWaygood
Found some duplicate `to`s in the documentation and some code comments and fixed them.
[Misc/NEWS.d/3.12.0a1.rst](ed55c69ebd/Misc/NEWS.d/3.12.0a1.rst) also contains two duplicate `to`s, but I wasn't sure if it's ok to touch that file. Looks auto generated. I'm happy to amend the PR if requested. :)
Automerge-Triggered-By: GH:AlexWaygood
Make docstrings for `as_integer_ratio` consistent across types, and document that
the returned pair is always normalized (coprime integers, with positive denominator).
---------
Co-authored-by: Owain Davies <116417456+OTheDev@users.noreply.github.com>
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
The argument is used as a switch and corresponds to a boolean logic. Therefore it is more intuitive to use the corresponding constant `False` as default value instead of the integer `0`.
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
This PR updates the cmath module documentation to reflect the reality that Python is almost always (and as far as I can tell, that "almost" can be omitted) running on a machine whose C double supports signed zeros.
* Removes misleading references to functions being continuous from above / below / the left / the right at branch cuts
* Expands the note on branch cuts at the top of the module documentation to explain the double-sided sign-of-zero-based behaviour
* Replace bitbucket.org domain by forge.example
* Update example to python.org
* Use explicitly invalid domain
topsecret.server.com domain is not controled by PSF. It's replaced by invalid topsecret.server.example domain. It follows RFC 2606, which advise .example as TLD for documentation.
* fileutils: handle non-blocking pipe IO on Windows
Handle erroring operations on non-blocking pipes by reading the _doserrno code.
Limit writes on non-blocking pipes that are too large.
* Support blocking functions on Windows
Use the GetNamedPipeHandleState and SetNamedPipeHandleState Win32 API functions to add support for os.get_blocking and os.set_blocking.
* Note that Popen attributes aren't meant to be set by users by rewording the text about the attributes.
* Also update some universal_newlines references to mention the modern text parameter name while in the area.
Co-authored-by: Gregory P. Smith <greg@krypto.org>
The summary of this diff is that it:
* adds a `_ctypes_alloc_format_padding` function to append strings like `37x` to a format string to indicate 37 padding bytes
* removes the branches that amount to "give up on producing a valid format string if the struct is packed"
* combines the resulting adjacent `if (isStruct) {`s now that neither is `if (isStruct && !isPacked) {`
* invokes `_ctypes_alloc_format_padding` to add padding between structure fields, and after the last structure field. The computation used for the total size is unchanged from ctypes already used.
This patch does not affect any existing aligment computation; all it does is use subtraction to deduce the amount of paddnig introduced by the existing code.
---
Without this fix, it would never include padding bytes - an assumption that was only
valid in the case when `_pack_` was set - and this case was explicitly not implemented.
This should allow conversion from ctypes structs to numpy structs
Fixes https://github.com/numpy/numpy/issues/10528
This starts the process. Users who don't specify their own start method
and use the default on platforms where it is 'fork' will see a
DeprecationWarning upon multiprocessing.Pool() construction or upon
multiprocessing.Process.start() or concurrent.futures.ProcessPool use.
See the related issue and documentation within this change for details.
The default `tzinfo` param of the `combine()` signature pseudocode was erroneously `self.tzinfo`.
`self` has no meaning in the context of a classmethod, and the datetime class itself has no `tzinfo` attribute. The correct default pseudocode is `time.tzinfo`, reflecting that the default is the `tzinfo` attribute of the `time` parameter.
This is a follow-up to #100811.
One of the changes in that PR isn't accurate in that
`os.path.join('', '')` will not end in a separator.
This reverts that change to the previous wording that used "only", but
explicitly calls out the case where the last part ends in a separator,
which is what caused confusin in #77607 and motivated the change
in #100811.
`warnings.warn()` gains the ability to skip stack frames based on code
filename prefix rather than only a numeric `stacklevel=` via a new
`skip_file_prefixes=` keyword argument.
When testing element truth values, emit a DeprecationWarning in all implementations.
This had emitted a FutureWarning in the rarely used python-only implementation since ~2.7 and has always been documented as a behavior not to rely on.
Matching an element in a tree search but having it test False can be unexpected. Raising the warning enables making the choice to finally raise an exception for this ambiguous behavior in the future.
This PR adds support for float-style formatting for `Fraction` objects: it supports the `"e"`, `"E"`, `"f"`, `"F"`, `"g"`, `"G"` and `"%"` presentation types, and all the various bells and whistles of the formatting mini-language for those presentation types. The behaviour almost exactly matches that of `float`, but the implementation works with the exact `Fraction` value and does not do an intermediate conversion to `float`, and so avoids loss of precision or issues with numbers that are outside the dynamic range of the `float` type.
Note that the `"n"` presentation type is _not_ supported. That support could be added later if people have a need for it.
There's one corner-case where the behaviour differs from that of float: for the `float` type, if explicit alignment is specified with a fill character of `'0'` and alignment type `'='`, then thousands separators (if specified) are inserted into the padding string:
```python
>>> format(3.14, '0=11,.2f')
'0,000,003.14'
```
The exact same effect can be achieved by using the `'0'` flag:
```python
>>> format(3.14, '011,.2f')
'0,000,003.14'
```
For `Fraction`, only the `'0'` flag has the above behaviour with respect to thousands separators: there's no special-casing of the particular `'0='` fill-character/alignment combination. Instead, we treat the fill character `'0'` just like any other:
```python
>>> format(Fraction('3.14'), '0=11,.2f')
'00000003.14'
>>> format(Fraction('3.14'), '011,.2f')
'0,000,003.14'
```
The `Fraction` formatter is also stricter about combining these two things: it's not permitted to use both the `'0'` flag _and_ explicit alignment, on the basis that we should refuse the temptation to guess in the face of ambiguity. `float` is less picky:
```python
>>> format(3.14, '0<011,.2f')
'3.140000000'
>>> format(Fraction('3.14'), '0<011,.2f')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/mdickinson/Repositories/python/cpython/Lib/fractions.py", line 414, in __format__
raise ValueError(
ValueError: Invalid format specifier '0<011,.2f' for object of type 'Fraction'; can't use explicit alignment when zero-padding
```
While the documentation for `optparse` mentioned that both `store_const` and
`append_const` store a constant value, it was not clear where this value was
coming from.
A link to `Option.const` makes this explicit.
The documentation for `rglob` did not mention what `pattern` actually
is.
Mentioning and linking to `fnmatch` makes this explicit, as the
documentation for `fnmatch` both shows the syntax and some explanation.
* Update description of stdout, stderr, and stdin.
Changes:
- Move the ``None`` option (which is default) to the front of the list
of input options
- Move the ``None`` option description up to make the default behavior
more clear (No redirection)
- Remove mention of Child File Descriptors from ``None`` option description
The zipfile.Path open() and read_text() encoding parameter can be supplied as a positional argument without causing a TypeError again. 3.10.0b1 included a regression that made it keyword only.
Documentation update included as users writing code to be compatible with a wide range of versions will need to consider this for some time.
Partially revert changes made in GH-93453.
asyncio.DefaultEventLoopPolicy.get_event_loop() now emits a
DeprecationWarning and creates and sets a new event loop instead of
raising a RuntimeError if there is no current event loop set.
Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>
* Clarify the meaning of the oparg for CACHE and COPY opcode in dis doc
* Use STACK to describe stack operation in analogy with a Python list
* Remove (delta) from BEFORE_WITH since BEFORE_WITH does not take an argument
* Fix the description of the stack impact of multiple opcodes
- Use "drive", not "drive letter", because of UNC paths
- Previous components are not thrown away from relative drive letters
- Use "segment" instead of "component" for consistency with pathlib
- Other miscellaneous improvements
The behaviour is fully explained a couple paragraphs above, but it may be useful to have a brief example to cover the behaviour.
Automerge-Triggered-By: GH:hauntsaninja
- Remove first link to lexical definition of integer literal, since it
doesn't apply (differs in handling of leading zeros, base needs to be
explicitly specified, unicode digits are allowed)
- Better describe handling of leading zeros, unicode digits, underscores
- Base 0 does not work exactly as like a code literal, since it allows
Unicode digits. Link code literal to lexical definition of integer
literal.
All the arguments are positional-only.
The current status after #99476 seems to be to not use positional-only
markers in documentation, hence I've simply removed it.
Based on the definition of the collections.abc classes, it is more accurate to use "sequence" instead of "container" when describing argparse choices.
A previous attempt at fixing this in #92450 was mistaken; this PR reverts that change.
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
This improves the lives of type annotation users of `float` - which type checkers implicitly treat as `int|float` because that is what most code actually wants. Before this change a `.is_integer()` method could not be assumed to exist on things annotated as `: float` due to the method not existing on both types.
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Christian Heimes <christian@python.org>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Fixes https://github.com/python/cpython/issues/89051
This introduces a new decorator `@inspect.markcoroutinefunction`,
which, applied to a sync function, makes it appear async to
`inspect.iscoroutinefunction()`.
gh-100176: Remove redundant compat code for Python 3.2 and older
Python 3.2 has been EOL since 2016-02-20 and 2.7 since 2020-01-01, so we
can remove this old compatibility check and unindent the old else-block.
Also, in the unindented block, replace a .format() call with an f-string.
Plus similar changes in the documentation.
Example needed to be indented. Was trying to call a context manger `pr` (from ` with cProfile.Profile() as pr:`) wot perform ` pr.print_stats()` once it had already exited.
Automerge-Triggered-By: GH:AlexWaygood
A few TCP socket options have been added to the Linux kernel these last
few years.
This commit adds all the ones available in Linux 6.0:
https://elixir.bootlin.com/linux/v6.0/source/include/uapi/linux/tcp.h#L91
While at it, the TCP_FASTOPEN option has been moved lower in the list
just to keep the same order as in tcp.h to ease future synchronisations.
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
asyncio.get_event_loop() now always return either running event loop or
the result of get_event_loop_policy().get_event_loop() call. The latter
should now raise an RuntimeError if no current event loop was set
instead of creating and setting a new event loop.
It affects also a number of asyncio functions and constructors which
call get_event_loop() implicitly: ensure_future(), shield(), gather(),
etc.
DeprecationWarning is no longer emitted if there is no running event loop but
the current event loop was set.
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Replace control characters in http.server.BaseHTTPRequestHandler.log_message with an escaped \xHH sequence to avoid causing problems for the terminal the output is printed to.
* Change documentation for sys.float_info.rounds
Change the documentation for sys.float_info.rounds to remove
references to C99 section 5.2.4.2.2 and instead place the
available values inline.
* Correction to previous documentation change
Newlines were not preserved in generated HTML on previous
commit. I have changes the list to a comma-separated list
of values and their meanings.
* Clarify source for value of FLT_ROUNDS
Clarify the source of the FLT_ROUNDS value and
change 'floating-point addition' to 'floating-point
arithmetic' to indicate that the rounding mode
applies to all arithmetic operations.
* nail down a couple examples to have more predictable output
* update a number of things, but this is really just a stash...
* added an applications section to describe typical uses for native and machine-independent formats
* make sure all format strings use a format prefix character
* responding to comments from @gpshead. Not likely finished yet.
* This got more involved than I expected...
* respond to several PR comments
* a lot of wordsmithing
* try and be more consistent in use of ``x`` vs ``'x'``
* expand examples a bit
* update the "see also" to be more up-to-date
* original examples relied on import * so present all examples as if
* reformat based on @gpshead comment (missed before)
* responding to comments
* missed this
* one more suggested edit
* wordsmithing
On some platforms, and in particular macOS/arm64, the calling
convention for variadic arguments is different from the regular
calling convention. Add a section to the documentation to document
this.
JosephSBoyle
Erlend E. Aasland
Kevin Kirsche
Irit Katriel
Kristján Valur Jónsson
Benjamin Fogle
gaogaotiantian
David Poirier
Raymond Hettinger
wim glenn
Alan Williams
Kumar Aditya
Mark Dickinson
Steve Dower
Julien Palard
Tom Levy
Paul Watson
Joongi Kim
Blind4Basics
Hugo van Kemenade
Виталий Дмитриев
Guido van Rossum
Thomas Krennwallner
Brandt Bucher
Nikita Sobolev
Owain Davies
sblondon
Marcin Wieczorek
Hyunkyun Moon
Barney Gale
Sergey B Kirpichev
Wagner Alberto
Michael K
Stefan Pochmann
Furkan Onder
Steven Troxler
Gouvernathor
Rotzbua
Skip Montanaro
Jelle Zijlstra
Yeojin Kim
Carl Meyer
Terry Jan Reedy
somebody
ram vikram singh
Filipe Laíns
Patricio Paez
Reza Rastak
Jan Gosmann
Dustin Rodrigues
Rayyan Ansari
Steve Kowalik
busywhitespace
Oleg Iarygin
Stanley
penguin_wwy
Brian Skinn
mrh1997
Eric Wieser
alnoki
Gregory P. Smith
Viet Than
C.A.M. Gerlach
Peter Gessler
Marcos Pereira
Raj
beavailable
John Belmonte
Shantanu
Ben
Peter Jiping Xie
Vinay Sajip
achhina
Mark Shannon
Carlton Gibson
Jacob Walls
Andrew Hong
Kamil Turek
Jürgen Gmach
Simon Robinson
richardhob
Viicos
Cristián Maureira-Fredes
Bob Kline
JustAnotherArchivist
Serhiy Storchaka
Matthieu Dartiailh
Noam Cohen
Mariusz Felisiak
Semen Zhydenko
Ryan Ozawa
dsentinel
FrozenBob
Akshit Tyagi
Tzu-ping Chung
Ethan Furman
Christophe Nanteuil
Jason R. Coombs
Mehrdad Moradizadeh
Sandeep Subramanian
mathieui
Guy Yagev
Ilya Kulakov
Bart Broere
MonadChains
Bisola Olasehinde
Pablo Galindo Salgado
Brad Wolfe
Thomas Grainger
Carlton Gibson
Jeremy Paige
Ben Darnell
jarrodcolburn
Ned Batchelder
Beweeted
Jia Junjie
Matthieu Baerts
Erik De Bonte
Ram Rachum
Géry Ogam
Dong-hee Na
Sam Ezeh
Matthew Hughes
David Miguel Susano Pinto
Georg Brandl
George Zhang
Illia Volochii
Charles Machalow
Ronald Oussoren
GabrielAnguita