Cecil Westerhof writes:
> There are three pip2 packages that should be updated:
> apsw (3.13.0.post1) - Latest: 3.9.2.post1 [sdist]
> mysql-utilities (1.6.4) - Latest: 1.4.3 [sdist]
> pygobject (3.22.0) - Latest: 3.27.4 [sdist]
>
> But the strange thing is that the installed version i
02.03.18 02:49, Rick Johnson пише:
This is true, but it does not answer the challenge directly
because function CRs are a consequence of Python _internals_
*NOT* consequences of a custom class written by a programmer
which references itself _explicitly_.
This doesn't matter. You question was "C
https://github.com/Homebrew/homebrew-core/pull/24604
/use/local/bin/python is symlink to python3.
vim is built with python3. You can install it from bottle.
Thanks to Homebrew maintainers!!
--
https://mail.python.org/mailman/listinfo/python-list
On Fri, Mar 2, 2018 at 4:46 PM, Ian Kelly wrote:
> On Thu, Mar 1, 2018 at 10:35 PM, Chris Angelico wrote:
>> On Fri, Mar 2, 2018 at 4:16 PM, Ian Kelly wrote:
>>> On Wed, Feb 28, 2018 at 8:00 PM, Chris Angelico wrote:
Not off hand, but I can provide an EXTREMELY real-world example of a
On Thu, 01 Mar 2018 22:46:56 -0700, Ian Kelly wrote:
> On Thu, Mar 1, 2018 at 10:35 PM, Chris Angelico
> wrote:
>> On Fri, Mar 2, 2018 at 4:16 PM, Ian Kelly
>> wrote:
>>> On Wed, Feb 28, 2018 at 8:00 PM, Chris Angelico
>>> wrote:
Not off hand, but I can provide an EXTREMELY real-world exam
On Thu, Mar 1, 2018 at 10:35 PM, Chris Angelico wrote:
> On Fri, Mar 2, 2018 at 4:16 PM, Ian Kelly wrote:
>> On Wed, Feb 28, 2018 at 8:00 PM, Chris Angelico wrote:
>>> Not off hand, but I can provide an EXTREMELY real-world example of a
>>> fairly tight loop: exceptions. An exception has a refer
On Fri, Mar 2, 2018 at 4:16 PM, Ian Kelly wrote:
> On Wed, Feb 28, 2018 at 8:00 PM, Chris Angelico wrote:
>> On Thu, Mar 1, 2018 at 1:46 PM, Rick Johnson
>> wrote:
>>> On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico wrote:
>>>
Here's one example: reference cycles. When d
On Wed, Feb 28, 2018 at 9:00 PM, ROGER GRAYDON CHRISTMAN wrote:
>
> On Wed, Feb 28, 2018, Rick Johnson wrote: >
> On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico wrote:
>>
>>> Here's one example: reference cycles. When do they get detected?
>>> Taking a really simple situation:
On Friday, March 2, 2018 at 10:05:41 AM UTC+5:30, Steven D'Aprano wrote:
> On Thu, 01 Mar 2018 16:26:47 -0800, ooomzay wrote:
>
> >> >> When does the destination file get closed?
> >> >
> >> > When you execute:-
> >> >
> >> >del dst
> >> >
> >> > or:-
> >> >
> >> >dst = something_else
> >>
On Wed, Feb 28, 2018 at 8:00 PM, Chris Angelico wrote:
> On Thu, Mar 1, 2018 at 1:46 PM, Rick Johnson
> wrote:
>> On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico wrote:
>>
>>> Here's one example: reference cycles. When do they get detected?
>>> Taking a really simple situation
On Thu, 01 Mar 2018 16:26:47 -0800, ooomzay wrote:
>> >> When does the destination file get closed?
>> >
>> > When you execute:-
>> >
>> >del dst
>> >
>> > or:-
>> >
>> >dst = something_else
>>
>> What if you don't?
>
> Then the resource will remain open until your script exits at which
On Thursday, March 1, 2018 at 6:10:45 PM UTC-6, Chris Angelico wrote:
> On Fri, Mar 2, 2018 at 10:58 AM, Rick Johnson
> wrote:
> > I don't buy into the religion that _all_ CRs are evil. Those
> > who make such claims are dealing in absolutes. And as Obi-
> > wan warned Anakin, only a Sith deals in
On Thu, 01 Mar 2018 16:49:35 -0800, Rick Johnson wrote:
> Remember, the challenge is _not_ simply a matter of circular references
> (there is literally tons of Python code out there which creates CRs for
> various reasons), no, the challenge is to create a custom class which
> references _itself_,
On Thursday 01 March 2018 17:29:27 Wildman via Python-list wrote:
> On Thu, 01 Mar 2018 13:44:27 -0500, Gene Heskett wrote:
> > I know its supposed to be in the debian stretch repo's.
> >
> > I've been told to get a fitbit, but they don't support linux of any
> > flavor, and that leaves galileo as
On Thursday 01 March 2018 15:31:32 Cousin Stanley wrote:
> Gene Heskett wrote:
> > I know its supposed to be in the debian stretch repo's.
> >
> > I've been told to get a fitbit, but they don't support linux
> > of any flavor, and that leaves galileo as the possible solution?
> >
> > So how should
>
> Remember, the challenge is _not_ simply a matter of circular
> references (there is literally tons of Python code out there
> which creates CRs for various reasons), no, the challenge is
> to create a custom class which references _itself_, and then
> explain (or demonstrate) how such a thing s
On Thursday, March 1, 2018 at 1:54:40 AM UTC-6, Serhiy Storchaka wrote:
[...]
> Every global function (or method of global class) creates a
> reference cycle.
>
> def f(): pass
>
> f.__globals__['f'] is f
(Note: This is also a response to dieter)
This is true, but it does not answer t
On 2018-03-01 23:57, John Pote wrote:
> On 01/03/2018 01:35, Tim Chase wrote:
> > While inelegant, I've "solved" this with a wrapper/generator
> >
> >f = file(fname, …)
> >g = (line.replace('\0', '') for line in f)
> I wondered about something like this but thought if there's a way
> of a
On Friday, March 2, 2018 at 12:14:53 AM UTC, Chris Angelico wrote:
> On Fri, Mar 2, 2018 at 11:07 AM, ooomzay wrote:
> > On Thursday, March 1, 2018 at 11:59:26 PM UTC, Chris Angelico wrote:
> >> On Fri, Mar 2, 2018 at 10:38 AM, ooomzay wrote:
> >> > def raii_example():
> >> >
> >> > src = RAI
On 2018-03-01 23:38, ooom...@gmail.com wrote:
On Thursday, March 1, 2018 at 12:15:57 AM UTC, Paul Rubin wrote:
RAII is similar to Python's "with" statement. So it sounds like OP
wants to replace one "malignant carbuncle" with another one.
I would like to understand why you think RAII is not
On Fri, Mar 2, 2018 at 11:07 AM, wrote:
> On Thursday, March 1, 2018 at 11:59:26 PM UTC, Chris Angelico wrote:
>> On Fri, Mar 2, 2018 at 10:38 AM, ooomzay wrote:
>> > def raii_example():
>> >
>> > src = RAIIFileAccess("src.txt", 'r')
>> > dst = RAIIFileAccess("dst.txt", 'w')
>> >
>> >
On Wednesday, February 28, 2018 at 11:44:39 PM UTC-6, Paul Rubin wrote:
> Rick Johnson writes:
> > Can you provide a real world example in which you need an
> > object which circularly references _itself_?
>
> DOM trees are a classic example (see the various DOM
> modules in the Python stdlib).
On Fri, Mar 2, 2018 at 10:58 AM, Rick Johnson
wrote:
> I don't buy into the religion that _all_ CRs are evil. Those
> who make such claims are dealing in absolutes. And as Obi-
> wan warned Anakin, only a Sith deals in absolutes. ;-)
So mathematicians are all Sith?
ChrisA
--
https://mail.python
On Thursday, March 1, 2018 at 11:59:26 PM UTC, Chris Angelico wrote:
> On Fri, Mar 2, 2018 at 10:38 AM, ooomzay wrote:
> > def raii_example():
> >
> > src = RAIIFileAccess("src.txt", 'r')
> > dst = RAIIFileAccess("dst.txt", 'w')
> >
> > for line in src:
> > dst.write(line)
>
>
On Thursday, March 1, 2018 at 11:51:50 PM UTC, Lawrence D’Oliveiro wrote:
> On Friday, March 2, 2018 at 12:39:01 PM UTC+13, ooo...@gmail.com wrote:
> > class RAIIFileAccess():
> > '''File Access-like Resource using [RAII] idiom'''
> >
> > ...
> >
> > def __del__(self):
> >
On Wednesday, February 28, 2018 at 10:26:26 PM UTC-6, Steven D'Aprano wrote:
> On Wed, 28 Feb 2018 18:46:05 -0800, Rick Johnson wrote:
>
> > On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico
> > wrote:
> >
> >> Here's one example: reference cycles. When do they get detected? Tak
On Fri, Mar 2, 2018 at 10:38 AM, wrote:
> def raii_example():
>
> src = RAIIFileAccess("src.txt", 'r')
> dst = RAIIFileAccess("dst.txt", 'w')
>
> for line in src:
> dst.write(line)
>
What happens if we make this change?
def raii_example():
global dst
src = RAIIFileAc
On 01/03/2018 01:35, Tim Chase wrote:
While inelegant, I've "solved" this with a wrapper/generator
f = file(fname, …)
g = (line.replace('\0', '') for line in f)
I wondered about something like this but thought if there's a way of
avoiding the extra step it would keep the execution speed u
On Thursday, March 1, 2018 at 12:15:57 AM UTC, Paul Rubin wrote:
> RAII is similar to Python's "with" statement. So it sounds like OP
> wants to replace one "malignant carbuncle" with another one.
I would like to understand why you think RAII is not substantially more
pythonic than "With". Bel
On Wednesday, February 28, 2018 at 10:03:56 PM UTC-6, ROGER GRAYDON CHRISTMAN
wrote:
[...]
> If you want something that looks like a real world example,
> consider the very common doubly-linked list:
>
> [ 1 ] <---> [ 2 ] <---> [ 3 ] <--.--> [ N ]
>
> This is chock-full of reference cycle
On 01/03/2018 02:38, Dennis Lee Bieber wrote:
On Wed, 28 Feb 2018 23:40:41 +, John Pote
declaimed the following:
with open( fname, 'rt', encoding='iso-8859-1' ) as csvfile:
Pardon? Has the CSV module changed in the last year or so?
Python 3.6 docs say csv reader has to be gi
On Fri, Mar 2, 2018 at 9:49 AM, Rick Johnson
wrote:
> On Wednesday, February 28, 2018 at 9:00:37 PM UTC-6, Chris Angelico wrote:
>> On Thu, Mar 1, 2018 at 1:46 PM, Rick Johnson
>> wrote:
>> > On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico wrote:
>> >
>> >> Here's one example:
On Wednesday, February 28, 2018 at 9:00:37 PM UTC-6, Chris Angelico wrote:
> On Thu, Mar 1, 2018 at 1:46 PM, Rick Johnson
> wrote:
> > On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico wrote:
> >
> >> Here's one example: reference cycles. When do they get detected?
> >> Taking a
On 03/01/2018 02:24 PM, Lawrence D’Oliveiro wrote:
On Thursday, March 1, 2018 at 6:44:39 PM UTC+13, Paul Rubin wrote:
DOM trees are a classic example (see the various DOM modules in the
Python stdlib). Non-leaf nodes have a list of child nodes, child nodes
have pointers back upwards to their pa
On Thu, 01 Mar 2018 13:44:27 -0500, Gene Heskett wrote:
> I know its supposed to be in the debian stretch repo's.
>
> I've been told to get a fitbit, but they don't support linux of any
> flavor, and that leaves galileo as the possible solution?
>
> So how should I proceed since the only stretc
Gene Heskett wrote:
> I know its supposed to be in the debian stretch repo's.
>
> I've been told to get a fitbit, but they don't support linux
> of any flavor, and that leaves galileo as the possible solution?
>
> So how should I proceed since the only stretch machine I have ATM
> is an arm64,
On Thursday, March 1, 2018 at 12:35:38 PM UTC, Richard Damon wrote:
> [snip]
> I disagree with the original complaint that these
> are always 'errors', if you know you have garbage collection, the
> allowance of cycles knowing they will still get cleaned up is a useful
> simplification if you do
I know its supposed to be in the debian stretch repo's.
I've been told to get a fitbit, but they don't support linux of any
flavor, and that leaves galileo as the possible solution?
So how should I proceed since the only stretch machine I have ATM is an
arm64, aka a rock64.
--
Cheers, Gene H
On 03/01/2018 04:58 PM, Ned Batchelder wrote:
> This sounds like it could make a good contribution to CPython :)
>
> --Ned.
Thanks for the recommendation. Issue/PR created:
https://bugs.python.org/issue32980
https://github.com/python/cpython/pull/5953
Cheers,
Thomas
--
https://
On 1 March 2018 at 16:32, Dennis Lee Bieber wrote:
> Note that a google search shows lots of problems apparently caused by
> the --single-version-externally-managed option.
--single-version-externally-managed is how pip calls setuptools, and
is required. It doesn't cause any problems the
On 3/1/18 7:40 AM, Thomas Nyberg wrote:
On 03/01/2018 12:46 PM, bartc wrote:
If they're only called once, then it probably doesn't matter too much in
terms of harming performance.
Oh yeah there's no way this has any affect on performance. A smart
compiler might even be able optimize the call aw
On 2018-03-01, Tim Chase wrote:
> On 2018-02-28 21:38, Dennis Lee Bieber wrote:
>> > with open( fname, 'rt', encoding='iso-8859-1' ) as csvfile:
>>
>> Pardon? Has the CSV module changed in the last year or so?
>>
>> Last time I read the documentation, it was recommended that
>> t
On Thursday, March 1, 2018 at 5:37:28 AM UTC+5:30, Steven D'Aprano wrote:
> On Wed, 28 Feb 2018 09:58:24 -0800, Aktive wrote:
>
> > what the hell do you care about cheating..
> >
> > the world doest care about cheating.
> >
> > its about skill.
>
> Because cheaters don't have skill. That's why
There are three pip2 packages that should be updated:
apsw (3.13.0.post1) - Latest: 3.9.2.post1 [sdist]
mysql-utilities (1.6.4) - Latest: 1.4.3 [sdist]
pygobject (3.22.0) - Latest: 3.27.4 [sdist]
But the strange thing is that the installed version is newer as the
new version. And when
On Wed, 28 Feb 2018 18:51:33 -0800, Rick Johnson wrote:
>> What happens if the __del__ method recreates a reference to the object?
>
> So make instantation of the object in its __del__ method an illegal op!
Why should it be illegal? And could that even be enforced in Python?
Is this one of thos
I know its supposed to be in the debian stretch repo's.
I've been told to get a fitbit, but they don't support linux of any
flavor, and that leaves galileo as the possible solution?
So how should I proceed since the only stretch machine I have ATM is an
arm64, aka a rock64.
--
Cheers, Gene H
On Thu, Mar 1, 2018 at 10:51 AM, Steven D'Aprano
wrote:
> On Thu, 01 Mar 2018 08:54:52 +1100, Chris Angelico wrote:
>
>> But this part sounds like prime quality tinfoil hat material:
>>
>>> Tell me how exactly ultrasonic side channels may activate remotely
>>> specific neural pathways implicated i
On 03/01/2018 10:34 AM, Gregory Ewing wrote:
After this thread, the term "docstring" is never going
to mean quite the same thing to me again.
I still feel that the following is quite readable:
<--->
import inspect
def snatch(func):
def snatched(self, *arg
On 03/01/2018 12:46 PM, bartc wrote:
> If they're only called once, then it probably doesn't matter too much in
> terms of harming performance.
Oh yeah there's no way this has any affect on performance. A smart
compiler might even be able optimize the call away entirely. Even if it
couldn't, it's
On 2/28/18 11:00 PM, ROGER GRAYDON CHRISTMAN wrote:
On Wed, Feb 28, 2018, Rick Johnson wrote: >
On Wednesday, February 28, 2018 at 5:02:17 PM UTC-6, Chris Angelico wrote:
Here's one example: reference cycles. When do they get detected?
Taking a really simple situation:
class Foo:
def __ini
On 01/03/2018 09:57, Thomas Nyberg wrote:
Hello,
I was playing around with cpython and noticed the following. The
`_PyFrame_Init()` and `PyByteArray_Init()` functions are called in these
two locations:
https://github.com/python/cpython/blob/master/Python/pylifecycle.c#L693-L694
On Wednesday, February 28, 2018 at 3:02:38 PM UTC+8, dieter wrote:
> Xiang Zhang writes:
>
> > Just like the title. It seems to me it is needed from the source code but
> > codes in stdlib all doesn't do that.
>
> The "import" machinery uses locks of its own (to protect "sys.modules").
>
> I a
Hello,
I was playing around with cpython and noticed the following. The
`_PyFrame_Init()` and `PyByteArray_Init()` functions are called in these
two locations:
https://github.com/python/cpython/blob/master/Python/pylifecycle.c#L693-L694
https://github.com/python/cpython/blob/mas
After this thread, the term "docstring" is never going
to mean quite the same thing to me again.
--
Greg
--
https://mail.python.org/mailman/listinfo/python-list
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