On Mon, Aug 16, 2021 at 6:36 AM Marco Sulla
wrote:
> > As Chris implied, the second 'sentence' is not grammatical English
>
> Oh, this is enough. The sense of the phrase was very clear and you all
> have understood it. Remarking grammatical errors is a gross violation
> of the Netiquette. I ask __
On Mon, Aug 16, 2021 at 7:56 AM Marco Sulla
wrote:
>
> On Sun, 15 Aug 2021 at 23:33, Tim Peters
> wrote:ople have said now, including me, they had no idea what
> > you meant.by "I pretend your immediate excuses". It's not a complaint
> > that it's expressed inelegantly, but that they can't make _
On Mon, Aug 16, 2021 at 5:44 PM Federico Salerno wrote:
>
> "Pretendere" in Italian means "to demand", it's a false friend with the
> English "pretend". I don't know whether Marco is Italian (the false
> friend might also be there between Spanish or whatever other romance
> language he speaks and
On Thu, Aug 19, 2021 at 12:42 PM Jonathan Goble wrote:
>
> On Wed, Aug 18, 2021 at 10:22 PM Terry Reedy wrote:
>>
>> On 8/18/2021 9:37 PM, Edwin Zimmerman wrote:
>> > On 8/18/21 9:18 PM, Jonathan Goble wrote:
>> >> I am mostly a lurker, but I am also considering unsubscribing if someone
>> >> do
On Fri, Aug 27, 2021 at 3:02 AM Skip Montanaro wrote:
>>
>> However, it has become a de facto standard for all Python code, and in the
>> document itself, there is frequent wording akin to "Identifiers used in the
>> standard library must be ASCII compatible ...", and even advice for third
>> p
On Wed, Sep 8, 2021 at 10:42 PM Victor Stinner wrote:
>
> On Wed, Sep 8, 2021 at 7:46 AM Steven D'Aprano wrote:
> > >>> bytes.from_int(121404708502361365413651784, 'little')
> > # should return b'Hello world'
>
> Really? I don't know anyone serializing strings as a "bigint" number.
> Did
On Tue, Sep 28, 2021 at 2:58 AM Eric Snow wrote:
>
> We've frozen most of the stdlib modules imported during "python -c
> pass" [1][2], to make startup a bit faster. Import of those modules
> is controlled by "-X frozen_modules=[on|off]". Currently it defaults
> to "off" but we'd like to default
On Tue, Sep 28, 2021 at 3:21 AM Eric Snow wrote:
>
> On Mon, Sep 27, 2021 at 11:09 AM Chris Angelico wrote:
> > When exactly does the freezing happen?
>
> When you build the executable (e.g. "make -j8",
> ".\PCbuild\build.bat"). So your changes to thos
On Fri, Oct 8, 2021 at 1:45 PM S Pradeep Kumar wrote:
> The Callable type is also usable as an expression, like in type aliases
> `IntOperator = (int, int) -> int` and `cast((int) -> int, f)` calls.
>
> **Question 1**: Are there concerns we should keep in mind about such a syntax
> proposal?
>
On Fri, Oct 8, 2021 at 1:51 PM Sam Gross wrote:
>
> Hi,
>
> I've been working on changes to CPython to allow it to run without the global
> interpreter lock. I'd like to share a working proof-of-concept that can run
> without the GIL. The proof-of-concept involves substantial changes to CPython
On Thu, Mar 7, 2013 at 1:40 AM, Ezio Melotti wrote:
> I did try a few weeks ago, when I had to download a copy of Windows
> for a project. Long story short, after 30+ minutes and a number of
> confirmation emails I reached a point where I had a couple of new
> accounts on MSDN/Dreamspark, a "purc
On Thu, Mar 7, 2013 at 3:46 AM, Stefan Behnel wrote:
> Chris Angelico, 06.03.2013 17:30:
>> On Thu, Mar 7, 2013 at 1:40 AM, Ezio Melotti wrote:
>>> I did try a few weeks ago, when I had to download a copy of Windows
>>> for a project. Long story short, after
On Thu, Mar 7, 2013 at 9:52 AM, Terry Reedy wrote:
> On 3/6/2013 11:55 AM, Chris Angelico wrote:
>
>> Someone would have to check, but in most cases, software licenses
>> govern the use, more than the distribution. If you're allowed to
>> download it free of charge f
On Tue, Mar 19, 2013 at 12:50 AM, Neal Becker wrote:
> def F(x):
> return x
>
> x = 2
> F(x) = 3
>
> F(x) = 3
> SyntaxError: can't assign to function call
>
> Do we really need this restriction? There do exist other languages without
> it.
The languages that permit you to assign to a fu
On Fri, Mar 22, 2013 at 12:18 AM, Stephen J. Turnbull
wrote:
> Paul Moore writes:
>
> > I have no figures one way or the other on that. You may well be
> > right. Are we aiming at "all Windows users" here?
>
> We need to be careful about this. ISTM that IDLE is aiming at the
> subset of users
On Fri, Apr 5, 2013 at 1:23 AM, Oscar Benjamin
wrote:
> The reason for calling int(obj) is to get an object that is precisely
> of type int. When I call this I do not want any modified or additional
> methods or data attached to the resulting object.
There's something I'm fundamentally not unders
On Fri, Apr 5, 2013 at 1:59 AM, Guido van Rossum wrote:
> On Thu, Apr 4, 2013 at 7:47 AM, Chris Angelico wrote:
>> Is there any argument that I can pass to Foo() to get back a Bar()?
>> Would anyone expect there to be one? Sure, I could override __new__ to
>> do stupid th
On Mon, May 20, 2013 at 11:35 AM, Greg Ewing
wrote:
> Joao S. O. Bueno wrote:
>>
>> Actually, when I was thinking on the subject I came to the same idea, of
>> having
>> some functions marked differently so they would use a different call
>> mechanism -
>> but them I wondered around having a diffe
On Tue, Jun 4, 2013 at 4:56 AM, Ethan Furman wrote:
> On 06/03/2013 11:34 AM, Antoine Pitrou wrote:
>>
>> On Mon, 3 Jun 2013 14:12:34 -0400
>> Donald Stufft wrote:
>>>
>>>
>>> I worry with the current situation people will just use TLS connections
>>> without realizing it's not being verified and
On Tue, Jun 4, 2013 at 7:31 AM, Paul Moore wrote:
>
> On 3 June 2013 21:05, Chris Angelico wrote:
>> Some legit sites with proper
>> certificates still manage to muck something up administratively
>> (developer.quicksales.com.au has a cert from RapidSSL but doesn'
On Tue, Jun 4, 2013 at 9:15 AM, Donald Stufft wrote:
> Generally any of these will be completely valid options, even disabling the
> checks. The idea behind my proposal is that people generally only use TLS
> for a reason and that reason is they want to protect against the kinds of
> attacks that
On Wed, Jun 5, 2013 at 11:17 AM, Dan Stromberg wrote:
>
> On Tue, Jun 4, 2013 at 4:53 PM, Carlos Nepomuceno
> wrote:
>>
>> Do you consider Python a 4GL? Why (not)?
>
>
> By the wikipedia definition of 4GL and 5GL, I'd say Python is neither. And
> it's not a VHLL either, again according to the wi
On Thu, Jun 6, 2013 at 5:21 AM, Jussi Pakkanen wrote:
> - implementation of Meson is 100% Python 3, it does not have a dependency on
> the shell and in fact already works on Windows
Since you're talking about a bootstrap requirement here, the obvious
question is: What version of Python 3 does it
On Thu, Jun 6, 2013 at 6:00 AM, Jussi Pakkanen wrote:
>
> On Wed, Jun 5, 2013 at 10:37 PM, Chris Angelico wrote:
>
>>
>> Since you're talking about a bootstrap requirement here, the obvious
>> question is: What version of Python 3 does it require? Will it be a
On Fri, Jun 21, 2013 at 11:06 AM, Nick Coghlan wrote:
> On 21 June 2013 01:04, Thomas Wouters wrote:
>> If the .py file is going to be wrong or incomplete, why would we want to
>> keep it -- or use it as fallback -- at all? If we're dead set on having a
>> .py file instead of requiring it to be p
On Wed, Jul 24, 2013 at 7:12 PM, Bohuslav Kabrda wrote:
> - What should user get after using "yum install python"?
> There are basically few ways of coping with this:
> 1) Just keep doing what we do, eventually far in the future drop "python"
> package and never provide it again (= go on only wit
On Thu, Jul 25, 2013 at 2:21 AM, Laurent Gautier wrote:
> - errors that are typical of "Python 2 script running with Python
> 3"-specific are probably limited (e.g., use of unicode, use of xrange,
> etc...)
>
The most common, in interactive scripts at least, is likely to be:
>>> print "Hello, wo
On Fri, Jul 26, 2013 at 12:29 AM, Eli Bendersky wrote:
> Hi all,
>
> I've been looking for a Github mirror for Python, and found two:
>
> * https://github.com/python-git/python has a lot of forks/watches/starts but
> seems to be very out of date (last updated 4 years ago)
> * https://github.com/py
On Thu, Aug 1, 2013 at 5:58 PM, Alexander Shorin wrote:
> fun = lambda i: i[1]
> for key, items in groupby(sorted(items, key=fun), key=fun):
> print(key, ':', list(items))
I'd do a direct translation to def here:
def fun(i): return i[1]
for key, items in groupby(sorted(items, key=fun), key=fun
On Wed, Aug 14, 2013 at 6:42 PM, Nick Coghlan wrote:
> That would be PEP 4 :)
What's the normal way to update a PEP?
... proposals for deprecating modules MUST be made by providing a
change to the text of this PEP, which SHOULD be a patch posted to
SourceForge..."""
Would that now b
On Thu, Aug 22, 2013 at 11:45 PM, Michael Foord
wrote:
> On 22 Aug 2013, at 14:00, Petri Lehtinen wrote:
>> Django's deprecation policy works like this: They deprecate something
>> in version A.B. It still works normally in A.B+1, generates a
>> (silenced) DeprecationWarning in A.B+2, and is fina
On Thu, Oct 3, 2013 at 11:09 PM, Игорь Васильев wrote:
> When we adding class to integer we have both slotv and slotw. x = slotv(v,
> w); -> returns Py_NotImplemented.
> But in this case we should execute x = slotw(v, w); and function should be
> completed in the same way as when we adding integer
On Tue, Jul 5, 2016 at 5:53 PM, Petr Viktorin wrote:
> If packages had a way to opt-out of needing the whole standard library,
> and instead specify the stdlib subset they need, answering questions
> like "will this run on my phone?" and "what piece of the stdlib do we
> want to port next?" would
On Wed, Jul 6, 2016 at 7:01 PM, Petr Viktorin wrote:
> Maybe a good short-term solution would be to make "import tkinter" raise
> ImportError("Run `dnf install tkinter` to install the tkinter module")
> if not found. This would prevent confusion while keeping the status quo.
> I'll look into that.
On Mon, Jul 11, 2016 at 1:26 PM, Steven D'Aprano wrote:
> (1) How much extra effort are we going to *mandate* that core devs put
> in to hide the differences between C and Python code, for the benefit of
> a small minority that will notice them?
>
The subject line is raising one specific differen
On Mon, Jul 11, 2016 at 4:25 PM, Ethan Furman wrote:
> On 07/10/2016 08:32 PM, Chris Angelico wrote:
>>
>> On Mon, Jul 11, 2016 at 1:26 PM, Steven D'Aprano
>> wrote:
>>>
>>> (1) How much extra effort are we going to *mandate* that core devs put
>>
On Tue, Jul 12, 2016 at 7:26 PM, Victor Stinner
wrote:
> "PEP 499 -- python -m foo should bind sys.modules['foo'] in addition
> to sys.modules['__main__']"
> https://www.python.org/dev/peps/pep-0499/
> => draft
>
I have a vague recollection that this ran into some trickinesses with
certain forms
On Sat, Jul 23, 2016 at 12:36 AM, Guido van Rossum wrote:
> Somebody did some research and found some bugs in CPython (IIUC). The
> published some questionable fragments. If there's a volunteer we could
> probably easily fix these. (I know we already have occasional Coverity
> scans and there are
On Tue, Aug 9, 2016 at 7:14 AM, Wolfgang Maier
wrote:
> Right, I think a fairer comparison would be to:
>
> class ctx2:
> def __enter__(self):
> self.it = iter(self)
> return next(self.it)
>
> def __exit__(self, *args):
> try:
> next(self.it)
> e
On Wed, Aug 10, 2016 at 4:43 AM, Giampaolo Rodola' wrote:
> -return self.__class__(self.func, self.args, self.kwds)
> +func, args, kwds = self.funcak
> +return self.__class__(func, args, kwds)
return self.__class__(*self.funcak)
> @wraps(func)
> def helper(*args
On Wed, Aug 10, 2016 at 4:43 AM, Giampaolo Rodola' wrote:
> Chris' SimplerContextManager solution is faster because it avoids the
> factory function but that is necessary for supporting the decoration of
> methods.
Hooking a tangent onto this: I have no idea, based on the current
source code, whi
On Fri, Aug 19, 2016 at 6:35 PM, Eric V. Smith wrote:
> PEP 515 adds underscores to numeric literals. As part of that, it adds
> optional underscores to numeric formatters (similar to PEP 378 for ','). See
> https://www.python.org/dev/peps/pep-0515/#further-changes
>
> I had assigned myself http:/
On my main dev system (Debian Stretch), I've had a single
long-standing test failure - test_site.py,
StartupImportTests.test_startup_imports. It's annoying (partly because
it's such a noisy failure), and doesn't appear to be happening on the
buildbots, nor presumably on core devs' computers, so it'
On Sat, Aug 20, 2016 at 12:31 AM, Random832 wrote:
> the -v output might be helpful in determining what is causing these
> modules to be imported. It would at least show what order they're
> imported in.
Here it is in all its spammy glory.
rosuav@sikorsky:~/cpython$ ./python -I -v -c 'import sys
On Sat, Aug 20, 2016 at 1:26 AM, Steve Dower wrote:
> Check any .pth files you can find. I suspect mpl_toolkits has some magic in
> it to make the namespace package work on 2.7.
>>> sys.path
['/usr/local/lib/python36.zip', '/home/rosuav/cpython/Lib',
'/home/rosuav/cpython/Lib/plat-x86_64-linux-gn
On Sat, Aug 20, 2016 at 2:25 AM, Steve Dower wrote:
> On 19Aug2016 0910, Chris Angelico wrote:
>>
>> On Sat, Aug 20, 2016 at 1:26 AM, Steve Dower
>> wrote:
>>>
>>> Check any .pth files you can find. I suspect mpl_toolkits has some magic
>>> in
On Sat, Aug 20, 2016 at 5:33 AM, Brett Cannon wrote:
>> Hmmm. So the question is, what is this test testing?
>
>
> It's making sure people who work on the modules that are imported during
> startup don't accidentally add another module dependency to the startup
> sequence. Since module imports
On Sat, Aug 20, 2016 at 7:34 AM, Brett Cannon wrote:
>> 1) Demand that .pth files restrict themselves to what's already
>> imported. This means startup is still fast even if you have a bunch of
>> pths. Downside: Third-party code can break Python's rules. Upside:
>> When they do, it can be reporte
On Sat, Aug 20, 2016 at 7:55 AM, Chris Angelico wrote:
> If I make a patch to do that, would it have a good chance of being accepted?
>
Shortcut. I've made the patch and put it on the tracker.
http://bugs.python.org/issue27807
Either it's accepted or it's not :)
On Sat, Aug 20, 2016 at 8:07 AM, Sjoerd Job Postmus wrote:
> I'd like to re-iterate my suggestion in case it was missed: split the
> current test in 2 tests:
>
> * Running with `-S` which is for checking that by default the collections
> are not imported. (Which is what is currently tested)
> * Ru
On Sat, Aug 20, 2016 at 12:55 PM, Random832 wrote:
>
> What about -S and putting "import site" explicitly in the test code? Or
> would that go back to importing everything on people who have packages
> installed?
I think so, yes.
> Really, there should be a "source-isolated" mode, which removes
On Mon, Aug 29, 2016 at 6:24 PM, Christian Heimes wrote:
> No, LTS support should not be our concern. If you need a brand new
> version of Python on an old LTS or Enterprise version of your OS, please
> contact your vendor and buy support. You don't get to run old metal and
> play with shiny new t
On Mon, Aug 29, 2016 at 8:52 PM, Nick Coghlan wrote:
> On 29 August 2016 at 19:14, Chris Angelico wrote:
>> On Mon, Aug 29, 2016 at 6:24 PM, Christian Heimes
>> wrote:
>>> No, LTS support should not be our concern. If you need a brand new
>>> version of P
On Mon, Aug 29, 2016 at 9:16 PM, Nick Coghlan wrote:
> On 29 August 2016 at 21:05, Chris Angelico wrote:
>> On Mon, Aug 29, 2016 at 8:52 PM, Nick Coghlan wrote:
>>> For upcoming 3.6 I would like to limit support to 1.0.2+ and require
>>> 1.0.2 features for 3.7.
>
On Wed, Aug 31, 2016 at 4:55 AM, Serhiy Storchaka wrote:
> On 30.08.16 21:20, Antoine Pitrou wrote:
>>
>> On Tue, 30 Aug 2016 18:12:01 +
>> Brett Cannon wrote:
Why not make it always a list? List objects are reasonably cheap in
memory and access time... (unlike dicts)
>>>
>>>
On Sat, Sep 3, 2016 at 7:56 AM, Brett Cannon wrote:
> On Fri, 2 Sep 2016 at 13:31 Dino Viehland via Python-Dev
> wrote:
>>
>> So it looks like both list and tuple are about within 5% of using co_extra
>> directly. Using a tuple instead of a list is about a wash except for
>> make_v2 where list i
On Sat, Sep 3, 2016 at 8:45 AM, Brett Cannon wrote:
>> I'm not following how this solves the collision problem. If you have a
>> tuple, how do the two (or more) users of it know which index they're
>> using? They'd need to keep track separately for each object, or else
>> inefficiently search the
On Sat, Sep 3, 2016 at 8:49 AM, Koos Zevenhoven wrote:
> On Fri, Sep 2, 2016 at 9:04 PM, Steven D'Aprano wrote:
>> On Fri, Sep 02, 2016 at 08:10:24PM +0300, Koos Zevenhoven wrote:
>>
>>> A good checker should be able to infer that x is a union type at the
>>> point that it's passed to spam, even
On Sun, Sep 4, 2016 at 2:09 AM, Nick Coghlan wrote:
> On 3 September 2016 at 08:50, Chris Angelico wrote:
>> Got it, thanks. I hope the vagaries of linear search don't mess with
>> profilers - a debugger isn't going to be bothered by whether it gets
>> first sl
On Sun, Sep 4, 2016 at 8:03 AM, Yury Selivanov wrote:
> On 2016-09-03 12:27 PM, Brett Cannon wrote:
>>
>> Below is the `co_extra` section of PEP 523 with the update saying that
>> users are expected to put a tuple in the field for easier simultaneous use
>> of the field.
>>
>> Since the `co_extra`
On Sun, Sep 4, 2016 at 9:49 AM, Yury Selivanov wrote:
>
>
> On 2016-09-03 4:13 PM, Chris Angelico wrote:
>> Replace it, but only as they register themselves with a particular
>> function. Imagine a profiler doing something vaguely like this:
>
>
> "Replacing
On Sun, Sep 4, 2016 at 8:52 PM, Mark Shannon wrote:
> The key difference is in placement.
> PEP 484 style
> variable = value # annotation
>
> Which reads to me as if the annotation refers to the value.
> PEP 526
> variable: annotation = value
>
> Which reads very much as if the annotation refers t
On Tue, Sep 6, 2016 at 2:17 AM, Steven D'Aprano wrote:
>> > The type comment systax is required for Python 2 and backwards-
>> > compatibility. That's a given.
>>
>> Sure, but all type checkers will not have to care about Python 2.
>
> They will have to care about type comments until such time as
On Wed, Sep 7, 2016 at 4:11 AM, Stephen J. Turnbull
wrote:
> Finally, the notion of annotating expressions is incoherent:
>
> # Annotating (sub)expressions: the more the merrier!
> (x) : bool = (((y): int + (z): float) / (w): complex): quarternion
> # Ooh, an expression with no past an
On Fri, Sep 9, 2016 at 2:39 AM, Random832 wrote:
> On Thu, Sep 8, 2016, at 12:30, Chris Barker wrote:
>> That's why I said "based on" -- under the hood, a C type is used, and
>> IIUC, that type has been "long" for ages. And a long on Windows 64
>> (with the MS compiler anyway) is 32 bit, and a lon
On Fri, Sep 9, 2016 at 6:22 AM, Victor Stinner wrote:
> A nice "side effect" of compact dict is that the dictionary now
> preserves the insertion order. It means that keyword arguments can now
> be iterated by their creation order:
>
This is pretty sweet! Of course, there are going to be 1172 com
On Sun, Sep 11, 2016 at 6:42 PM, Victor Stinner
wrote:
> 2016-09-10 23:24 GMT-04:00 Nick Coghlan :
>> To conform with the updated language spec, implementations just need
>> to use collections.OrderedDict in 3 places:
>>
>> (...)
>> - storage type for passing kwargs to functions
>
> I'm not sure a
On Sun, Sep 11, 2016 at 5:45 PM, Elliot Gorokhovsky
wrote:
> I am interested in making a non-trivial improvement to list.sort(), but
> before I put in the work, I want to test the waters and see if this is
> something the community would accept. Basically, I want to implement radix
> sort for list
On Tue, Sep 13, 2016 at 2:27 AM, Gregory P. Smith wrote:
> Disorder for this purpose need not be a random shuffle (overkill). It just
> needs to be regularly inconsistent. A simple thing to do on top of 3.6's new
> dict implementation would be to pick a random starting point within the
> order arr
On Fri, Sep 23, 2016 at 4:47 PM, Benjamin Peterson wrote:
> On Thu, Sep 22, 2016, at 04:44, Victor Stinner wrote:
>> 2016-09-22 8:02 GMT+02:00 Benjamin Peterson :
>> > Just dump the compat macros in Python 4.0 I think.
>>
>> Please don't. Python 3 was so painful because we decided to make
>> milli
On Sat, Oct 1, 2016 at 9:39 PM, Christian Tismer wrote:
> The exec() script inherited the __future__ statement!
> It behaved like the future statement were implicitly there.
>
> Is that a bug or a feature?
It's documented, but not very noisily.
https://docs.python.org/2/reference/simple_stmts.ht
On Sat, Oct 1, 2016 at 10:17 PM, Chris Angelico wrote:
> So I'd call it a feature, but possibly one that warrants a mention in
> the exec and eval docs.
To clarify: This *is* documented under __future__, but not under
exec/eval. I'm just suggesting adding another cross-re
On Mon, Oct 10, 2016 at 8:35 PM, Larry Hastings wrote:
> Huh? In all other circumstances, a "borrowed" reference is exactly that: X
> has a reference, and you are relying on X's reference to keep the object
> alive. Borrowing from a borrowed reference is simply a chain of these; Z
> borrows from
On Mon, Oct 10, 2016 at 5:18 PM, Elliot Gorokhovsky
wrote:
> First, some simple benchmark results (numbers are seconds, check out the
> extension module at https://github.com/embg/python-fast-listsort.git):
>
> *** 1e3 ints ***
> F.fastsort(): 0.00018930435180664062
> F.sort(): 0.00028300285339355
On Tue, Oct 11, 2016 at 3:49 AM, MRAB wrote:
> On 2016-10-10 10:45, Chris Angelico wrote:
>>
>> On Mon, Oct 10, 2016 at 8:35 PM, Larry Hastings
>> wrote:
>>>
>>> Huh? In all other circumstances, a "borrowed" reference is exactly that:
>
On Tue, Oct 11, 2016 at 4:03 AM, Paul Moore wrote:
> On 10 October 2016 at 17:49, MRAB wrote:
>> If you lookup something in a dict, it'll be a borrowed reference.
>>
>> If the dict is globals() and there's no GIL, another thread could delete the
>> item while your code had the borrowed reference.
On Tue, Oct 11, 2016 at 5:24 AM, Random832 wrote:
> On Mon, Oct 10, 2016, at 14:04, MRAB wrote:
>> Instead of locking the object, could we keep the GIL, but have it
>> normally released?
>>
>> A thread could then still call a function such as PyWeakref_GetObject()
>> that returns a borrowed refere
On Tue, Oct 11, 2016 at 7:42 AM, Elliot Gorokhovsky
wrote:
> ChrisA suggested I also try "make test" or something to get a more realistic
> benchmark. I will do that once I implement this as a patch, right now it's
> an extension module that subclasses list, so I can't just drop it into
> existing
On Tue, Oct 11, 2016 at 8:14 AM, Larry Hastings wrote:
> But I don't think this fixes the problem. Consider:
>
> Thread A calls Q = PyList_GetItem(L, 0), which returns a borrowed reference.
> Thread A then gets suspended, before it has a chance to Py_INCREF(Q).
> Thread B does L.clear(), the refe
On Tue, Oct 11, 2016 at 9:52 AM, MRAB wrote:
>> Also, I don't know when it would ever be safe to release the "memory
>> deallocation lock". Just because it's safe for your thread doesn't mean
>> it's safe for another thread. And if you do it on a thread-by-thread
>> basis, in the above example i
On Wed, Oct 12, 2016 at 12:51 AM, Paul Moore wrote:
> On 11 October 2016 at 14:04, Elliot Gorokhovsky
> wrote:
>> Right, that sounds good, but there's just one thing I don't understand
>> that's keeping me from using it. Namely, I would define a benchmark list L
>> in my setup, and then I would h
On Wed, Oct 12, 2016 at 1:24 AM, Paul Moore wrote:
> On 11 October 2016 at 15:00, Chris Angelico wrote:
>> On Wed, Oct 12, 2016 at 12:51 AM, Paul Moore wrote:
>>> On 11 October 2016 at 14:04, Elliot Gorokhovsky
>>> wrote:
>>>> Right, that sounds g
I work with a full-stack web development bootcamp. Most of the course
focuses on JavaScript (Node.js, React, jQuery, etc), but there's a
one-week period in which each student gets to pick some technology to
learn, and at the end of the week, demos to the group some project
s/he has mastered. Two ch
On Thu, Oct 13, 2016 at 12:01 PM, Ryan Gonzalez wrote:
> On Wed, Oct 12, 2016 at 7:05 PM, Chris Angelico wrote:
>>
>> I work with a full-stack web development bootcamp. Most of the course
>> focuses on JavaScript (Node.js, React, jQuery, etc),
>
>
> Poor students.
On Fri, Oct 14, 2016 at 5:09 AM, Mariatta Wijaya
wrote:
> PEP 1 states that plain/text is an acceptable value for a PEP's content
> type, and it is the default value if no content type is specified.
>
> May I propose adding something along the line of: "new PEPs should use
> restructured Text form
On Wed, Oct 19, 2016 at 2:57 AM, Chris Barker - NOAA Federal
wrote:
>> The proposal is that it should be documented as being part of the
>> language spec starting in 3.4 (or whatever).
>
> Is the performance characteristics of any object part of the language spec?
>
> I.e if someone wrote an imple
On Wed, Nov 23, 2016 at 6:20 AM, Victor Stinner
wrote:
> It's not bug but a feature :-) Python doesn't protect yourself against
> mistakes :-)
AIUI the normal way to protect yourself is to unlink (remove) the file
and create it from scratch, rather than truncate it.
ChrisA
__
On Tue, Dec 13, 2016 at 12:18 AM, Nick Coghlan wrote:
> It absolutely *is* relevant, as is how diligent the redistributors are
> in differentiating between the unmodified upstream project and the
> patches we have applied post-release (rather than just posting the end
> result without a clear audi
On Wed, Dec 14, 2016 at 4:48 AM, Guido van Rossum wrote:
> IIUC the private version gets updated every time the dict gets modified --
> but what we need here should only trigger when a key is added or removed,
> not when a value is updated.
Is it possible to add a key, triggering a resize of the
On Wed, Dec 14, 2016 at 5:13 AM, Joe Jevnik wrote:
>> Is it possible to add a key, triggering a resize of the dict, then
> remove one, and continue iterating through the old (deallocated)
> memory?
>
> You can add and remove keys between calling next which would resize the
> dictionary; however, i
On Sat, Dec 17, 2016 at 8:07 AM, Ethan Furman wrote:
> On 12/16/2016 11:24 AM, Guido van Rossum wrote:
>
>> I am beginning to think that `from __future__ import unicode_literals`
>> does
>> more harm than good. I don't recall exactly why we introduced it, but
>> with
>> the restoration of u"" li
On Wed, Jan 25, 2017 at 4:38 PM, Craig Rodrigues wrote:
>
> Glyph pointed this out to me here:
> http://twistedmatrix.com/pipermail/twisted-python/2017-January/031106.html
>
> If I do this on Python 3.6:
>
>>> [(yield 1) for x in range(10)]
> at 0x10cd210f8>
>
> If I understand this:
> https://d
On Fri, Feb 17, 2017 at 7:33 AM, Patrick Wallinger wrote:
> zipimport.ZipImportError: can't decompress data; zlib not available
>
There may very well be a bug here of the form of "zlib dependency is
considered soft, but then something else breaks". However, in your
current situation, my recommend
A bit of a thankless job, updating What's New for a bugfix release,
but can be so important. Today I was trying to figure out why a Python
script behaved differently on my dev system and my server, even when I
used Python 3.4 on both ends - but it was 3.4.4 on one and 3.4.2 on
the other. My first p
On Tue, May 2, 2017 at 6:52 AM, Terry Reedy wrote:
> The promise makes it clear that breaking the property is a bug to be fixed.
> It only decreases the probability for someone who has read the promise.
> Unfortunately, 'never fail' is hard to test ;-).
>
Aside from straight-up bugs, how can one
On Thu, May 11, 2017 at 12:53 AM, Ethan Furman wrote:
> Why is python-list the place to send behavioral bugs to? It's been my
> experience that folks there will (rightly) ask the individual to file a bug
> on the tracker.
>
How many bug tracker entries do you want to see about mutable default
ar
On Thu, Jun 1, 2017 at 7:23 PM, Antoine Pitrou wrote:
>> Do you also disagree on the need of the need of the PEP 546
>> (backport) to make the PEP 543 (new TLS API) feasible in practice?
>
> Yes, I disagree. We needn't backport that new API to Python 2.7.
> Perhaps it's time to be reasonable: Pyt
On Thu, Jun 1, 2017 at 8:01 PM, Antoine Pitrou wrote:
> On Thu, 1 Jun 2017 19:50:22 +1000
> Chris Angelico wrote:
>> On Thu, Jun 1, 2017 at 7:23 PM, Antoine Pitrou wrote:
>> >> Do you also disagree on the need of the need of the PEP 546
>> >> (backpo
On Fri, Jun 2, 2017 at 1:01 AM, Cory Benfield wrote:
> The answer to that is honestly not clear to me. I chatted with the pip
> developers, and they have 90%+ of their users currently on Python 2, but more
> than half of those are on 2.7.9 or later. This shows some interest in
> upgrading to ne
On Fri, Jun 2, 2017 at 2:35 AM, Cory Benfield wrote:
> I have figures for the download numbers, which are an awkward proxy because
> most people don’t CI on Windows and macOS, but they’re the best we have.
> Linux has approximately 20x the download numbers of either Windows or macOS,
> and both
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