[issue32338] Save OrderedDict import in re

[Srinivas Reddy T]

Change by Srinivas  Reddy T :


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[issue32360] Save OrderedDict imports in various stdlibs.

[Srinivas Reddy T]

Change by Srinivas  Reddy T :


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[issue32030] PEP 432: Rewrite Py_Main()

[Nick Coghlan]

Nick Coghlan  added the comment:

_PyCoreConfig.ignore_environment was part of the initial PEP 432 implementation 
that I wrote.

It's that due to the design goal that once the refactoring is complete, an 
embedding application should be able to control *all* the settings through the 
config structs, without *ever* touching the global variables directly.

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[issue32374] Document that m_traverse for multi-phase initialized modules can be called with m_state=NULL

[Nick Coghlan]

Nick Coghlan  added the comment:

Yep, the requirement for supporting multiple interpreters is just that you 
either avoid relying on C global state entirely, or else correctly synchronise 
access to it. Multi-phase initialisation just provides a few nudges in the 
direction of doing that more consistently.

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[issue32324] [Security] "python3 directory" inserts "directory" at sys.path[0] even in isolated mode

[Nick Coghlan]

Nick Coghlan  added the comment:

(However, the behaviour Steve is describing suggests that sys.path[0] 
initialisation may have problems on Windows that the test suite isn't picking 
up - "-I" should *not* add the script directory to the path, and directory 
execution should always add an absolute path, not a relative one)

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[issue32324] [Security] "python3 directory" inserts "directory" at sys.path[0] even in isolated mode

[Nick Coghlan]

Nick Coghlan  added the comment:

When executing a sys.path entry, you're executing that *entire* entry (whether 
it's a directory or zipfile). This isn't a bug, and it isn't in conflict with 
the assurances offered by isolated mode (it would only be a problem if running 
"~/code/mydirectory" added "~/code" to sys.path).

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status: open -> closed

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[issue28307] Accelerate 'string' % (value, ...) by using formatted string literals

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

PR 5012 implements transformation simple format strings containing only %s, %r 
and %a into f-strings.

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[issue28307] Accelerate 'string' % (value, ...) by using formatted string literals

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue32411] Idlelib.browser: stop sorting dicts created by pyclbr

[Cheryl Sabella]

Cheryl Sabella  added the comment:

Terry,

I'm not sure if I phrased my initial question correctly.  I've made a pull 
request to show you what I was thinking.

What I had tried to show with the test case change is that, prior to the 
guarantee of insertion order on the dictionary, the check `eq(tcl, [C0, f0])` 
would have failed without the sort because `transform_children` would have 
returned `[f0, C0]`.  With the sort in place or with the guarantee insertion 
order, this test doesn't fail.

Thanks!

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[issue24991] Define instance mutability explicitly on type objects?

[Nick Coghlan]

Nick Coghlan  added the comment:

Declaring "I intend for instances of this class to be immutable" isn't a fuzzy 
concept - it's in the same vein as other type hints, like "I intend for this to 
be a string". The part that's fuzzy is how well Python actually enforces that 
declaration, and hence the degree to which you can actually rely on it at 
runtime.

In most cases, detecting and reporting *violations* of that intent would be in 
the realm of typecheckers rather than the language interpeter, but there'd be 
cases where the interpreter itself could make useful inferences from such a 
declaration (for example, by prohibiting conventional mutation operations, the 
way "frozen=True" does for data classes).

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[issue32411] Idlelib.browser: stop sorting dicts created by pyclbr

[Cheryl Sabella]

Change by Cheryl Sabella :


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[issue32145] Wrong ExitStack Callback recipe

[Nick Coghlan]

Nick Coghlan  added the comment:

Regarding super().__init__(): I added ExitStack to contextlib2 first, so I was 
thinking in the Py2/3 compatible subset when I wrote the original docs. We can 
freely change that for the standard library recipes.

Regarding the "how to create a copy" question, while I don't especially like 
the notion of adding a dedicated semi-public copy method, I think you're right 
that it may be the best option:

1. Full pickle/copy module support doesn't make sense, since exit stacks are 
inherently stateful - you can't save them to use later, since you'd need to 
repeat the setup steps as well, but we don't keep track of what the setup steps 
actually *were*.

2. `stack.pop_all()` was designed such that if you clone the stack, you ensure 
that the original stack *won't* call the cleanup callbacks any more. If we were 
to add a fully public `stack.copy()` method (or `copy.copy(stack)` support via 
`stack.__copy__()`), then we'd lose that deliberate nudge, and put folks more 
at risk of "double-free" style bugs, where they run the cleanup functions 
multiple times.

3. A for-subclasses-only "self._clone()" API could work as follows:

def _clone(self, new_instance=None):
if new_instance is None:
new_instance = type(self)()
# Clone state here
return new_instance

Then subclasses could override *just* the instance creation part by doing:

def _clone(self):
return super()._clone(self._make_instance())

While also being free to add their own additional state copying code if needed.

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[issue32345] EIO from write() is only fatal if print() contains a newline

[STINNER Victor]

Change by STINNER Victor :


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[issue32426] Tkinter.ttk Widget does not define wich option exists to set the cursor

[Alessandro Piccione]

New submission from Alessandro Piccione :

In the documentation of Tkinter.ttk Widget it is defined the "cursor" 
parameter. It is:
cursor  
Specifies the mouse cursor to be used for the widget. If set to the empty 
string (the default), the cursor is inherited for the parent widget.

There is not ANY way to knok wich value this parameter accept.
Searching "cursor" in the documentation does not find nothing, apart database 
cursor and this page (Tkinter.ttk.Widget).

Thanks,

Alessandro

--
components: Tkinter
messages: 309045
nosy: alex.75
priority: normal
severity: normal
status: open
title: Tkinter.ttk Widget does not define wich option exists to set the cursor
type: resource usage
versions: Python 3.8

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[issue31584] Documentation Language mixed up

[Julien Palard]

Julien Palard  added the comment:

https://github.com/python/docsbuild-scripts/pull/36

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[issue26133] asyncio: ugly error related to signal handlers at exit if the loop is not closed explicitly

[Andrew Svetlov]

Change by Andrew Svetlov :


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[issue29504] blake2: compile error with -march=bdver2

[Joseph Mitzen]

Joseph Mitzen  added the comment:

Is this ever going to get merged? The gentoo bug report link includes a patch 
that simply removes the nested comments, which is all that is needed to get the 
code to compile properly on Bulldozer processors. There's no "manual massaging" 
or anything else necessary to fix the bug. I've tested it out and it works.

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[issue31721] assertion failure in FutureObj_finalize() after setting _log_traceback to True

[Yury Selivanov]

Change by Yury Selivanov :


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[issue31721] assertion failure in FutureObj_finalize() after setting _log_traceback to True

[Yury Selivanov]

Yury Selivanov  added the comment:


New changeset e0aef4f3cd339a405d2a7fbd35a50afa64834f84 by Yury Selivanov in 
branch 'master':
bpo-31721: Allow Future._log_traceback to only be set to False (#5009)
https://github.com/python/cpython/commit/e0aef4f3cd339a405d2a7fbd35a50afa64834f84


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[issue32419] Add unittest support for pyc projects

[R. David Murray]

R. David Murray  added the comment:

There may be now, but I don't think there was when unittest was written.  Also, 
if someone decided to use namespace packages for tests for some reason, the 
current check would also probably fail, so it may be worth looking for (or 
creating if needed) a standard way to check via importlib.

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[issue32419] Add unittest support for pyc projects

[Bassem Girgis]

Bassem Girgis  added the comment:

Hi Eric,

Yes it is like David said. For the projects you don't distribute the code
with the deployment package, you end up distributing only pyc files. As of
how to get these files, you can make use of py_compile or compileall
modules. For compileall, however, you have to pass the legacy flag to avoid
the __pycache__ standard.

What I found strange in the unittest code while trying to resolve this
issue is that, it is relying on hardcoded searches for __init__.py to find
if a module is loadable. I would have imagined that there is a standard why
to answer this question.

Best regards,
Bassem

Bassem Girgis, PhD

Email: brgir...@gmail.com

On Sun, Dec 24, 2017 at 10:53 AM, Serhiy Storchaka 
wrote:

>
> Change by Serhiy Storchaka :
>
>
> --
> stage:  -> test needed
>
> ___
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[issue32422] Reduce lru_cache memory overhead.

[INADA Naoki]

INADA Naoki  added the comment:


New changeset 3070b71e5eedf62e49b8e7dedab75742a5f67ece by INADA Naoki in branch 
'master':
bpo-32422: Reduce lru_cache memory usage (GH-5008)
https://github.com/python/cpython/commit/3070b71e5eedf62e49b8e7dedab75742a5f67ece


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[issue32422] Reduce lru_cache memory overhead.

[INADA Naoki]

Change by INADA Naoki :


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[issue28308] Accelerate 'string'.format(value, ...) by using formatted string literals

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue28307] Accelerate 'string' % (value, ...) by using formatted string literals

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue31721] assertion failure in FutureObj_finalize() after setting _log_traceback to True

[Yury Selivanov]

Change by Yury Selivanov :


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[issue31721] assertion failure in FutureObj_finalize() after setting _log_traceback to True

[Yury Selivanov]

Change by Yury Selivanov :


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[issue31721] assertion failure in FutureObj_finalize() after setting _log_traceback to True

[Yury Selivanov]

Yury Selivanov  added the comment:

> _log_traceback is a private property and asyncio implementation detail, you 
> should never touch it.

But still, we shouldn't let Python crash if someone sets it.  I'll make a PR to 
fix this the way Oren proposed.

Andrew, let's discuss later with what we want to replace _log_traceback. I 
don't like that it's a semi-public thing.

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[issue32363] Deprecate task.set_result() and task.set_exception()

[Yury Selivanov]

Change by Yury Selivanov :


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[issue32363] Deprecate task.set_result() and task.set_exception()

[Yury Selivanov]

Yury Selivanov  added the comment:


New changeset 0cf16f9ea014b17d398ee3971d4976c698533318 by Yury Selivanov in 
branch 'master':
bpo-32363: Disable Task.set_exception() and Task.set_result() (#4923)
https://github.com/python/cpython/commit/0cf16f9ea014b17d398ee3971d4976c698533318


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[issue31721] assertion failure in FutureObj_finalize() after setting _log_traceback to True

[Andrew Svetlov]

Andrew Svetlov  added the comment:

_log_traceback is a private property and asyncio implementation detail, you 
should never touch it.

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[issue32402] Coverity: CID 1426868/1426867: Null pointer dereferences in textio.c

[INADA Naoki]

Change by INADA Naoki :


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[issue32372] Optimize out __debug__ at the AST level

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue32372] Optimize out __debug__ at the AST level

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 3dfbaf51f0d90646e0414ddbd3b513ee8e5ffe9b by Serhiy Storchaka in 
branch 'master':
bpo-32372: Move __debug__ optimization to the AST level. (#4925)
https://github.com/python/cpython/commit/3dfbaf51f0d90646e0414ddbd3b513ee8e5ffe9b


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[issue32335] Failed Python build on Fedora 27

[Xavier de Gaye]

Change by Xavier de Gaye :


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[issue31988] Saving bytearray to binary plist file doesn't work

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Fixed in issue32072.

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stage:  -> resolved
status: open -> closed
superseder:  -> Issues with binary plists

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[issue31983] Officially add Py_SETREF and Py_XSETREF

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Since there are objections, it is too early to make this a public C API.

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[issue32422] Reduce lru_cache memory overhead.

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue32422] Reduce lru_cache memory overhead.

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

LGTM.

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