messages? Do yall prefer I post a pastebin link if
> it's over a certain number of lines? I know this isn't IRC - just
> asking.
Welcome!
Pastebin and other stuff has the disadvantage that the content might be
removed later.
What about pasting it under your actual message if it
she/... must be identifiable.
The mailing list has a Usenet gateway
Those users use the Usenet to post.
Check the Injection-Info header for the address of the news server
operator. He can identify the account that posted it.
--
kind regards
Marco
Send spam to 1718440236mu...@cartoonies
I was banned from the mailing list and Discuss forum for a very long time.
Too much IMHO, but I paid my dues.
Now this is my state in the forum:
- I never posted something unrespectful in the last months
- I have a limitation of three posts per threads, but only on some threads
- Some random posts
On Fri, 29 Jul 2022 at 23:23, Barry wrote:
>
>
>
> > On 29 Jul 2022, at 19:33, Marco Sulla wrote:
> >
> > I tried to follow the instructions here:
> >
> > https://mypy.readthedocs.io/en/stable/stubgen.html
> >
> > but the instructions a
I tried to follow the instructions here:
https://mypy.readthedocs.io/en/stable/stubgen.html
but the instructions about creating a stub for a C Extension are a little
mysterious. I tried to use it on the .so file without luck.
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On Fri, 22 Jul 2022 at 09:00, Barry wrote:
> With code as complex as python’s there will be memory allocations that
occur that will not be directly related to the python code you test.
>
> To put it another way there is noise in your memory allocation signal.
>
> Usually the signal of a memory lea
llect()
snapshot2 = tracemalloc.take_snapshot().filter_traces(
(tracemalloc.Filter(True, __file__), )
)
top_stats = snapshot2.compare_to(snapshot1, 'lineno')
tracemalloc.stop()
for stat in top_stats:
print(stat)
The result is:
/home/marco/sources/test.py:14: size=3339 B (+3339 B)
This naif code shows no leak:
import resource
import pickle
c = 0
while True:
pickle.dumps(iter([]))
if (c % 1) == 0:
max_rss = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
print(f"iteration: {c}, max rss: {max_rss} kb")
c += 1
--
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On Thu, 21 Jul 2022 at 22:28, MRAB wrote:
>
> It's something to do with pickling iterators because it still occurs
> when I reduce func_76 to:
>
> @trace
> def func_76():
> pickle.dumps(iter([]))
It's too strange. I found a bunch of true memory leaks with this
decorator. It seems to be relia
I tried to check for memory leaks in a bunch of functions of mine using a
simple decorator. It works, but it fails with this code, returning a random
count_diff at every run. Why?
import tracemalloc
import gc
import functools
from uuid import uuid4
import pickle
def getUuid():
return str(uuid
The package arrow has a simple shift method for months, weeks etc
https://arrow.readthedocs.io/en/latest/#replace-shift
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On Wed, 18 May 2022 at 23:32, Cameron Simpson wrote:
>
> On 17May2022 22:45, Marco Sulla wrote:
> >Well, I've done a benchmark.
> >>>> timeit.timeit("tail('/home/marco/small.txt')", globals={"tail":tail},
> >>>>
Well, I've done a benchmark.
>>> timeit.timeit("tail('/home/marco/small.txt')", globals={"tail":tail},
>>> number=10)
1.5963431186974049
>>> timeit.timeit("tail('/home/marco/lorem.txt')", globals={"t
On Fri, 13 May 2022 at 12:49, <2qdxy4rzwzuui...@potatochowder.com> wrote:
>
> On 2022-05-13 at 12:16:57 +0200,
> Marco Sulla wrote:
>
> > On Fri, 13 May 2022 at 00:31, Cameron Simpson wrote:
>
> [...]
>
> > > This is nearly the worst "specificat
On Fri, 13 May 2022 at 00:31, Cameron Simpson wrote:
> On 12May2022 19:48, Marco Sulla wrote:
> >On Thu, 12 May 2022 at 00:50, Stefan Ram wrote:
> >> There's no spec/doc, so one can't even test it.
> >
> >Excuse me, you're very right.
> >
Thank you very much. This helped me to improve the function:
import os
_lf = b"\n"
_err_n = "Parameter n must be a positive integer number"
_err_chunk_size = "Parameter chunk_size must be a positive integer number"
def tail(filepath, n=10, chunk_size=100):
if (n <= 0):
raise ValueErr
On Thu, 12 May 2022 at 00:50, Stefan Ram wrote:
>
> Marco Sulla writes:
> >def tail(filepath, n=10, chunk_size=100):
> >if (n <= 0):
> >raise ValueError(_err_n)
> ...
>
> There's no spec/doc, so one can't even test it.
Excuse me, you&#
On Wed, 11 May 2022 at 22:09, Chris Angelico wrote:
>
> Have you actually checked those three, or do you merely suppose them to be
> true?
I only suppose, as I said. I should do some benchmark and some other
tests, and, frankly, I don't want to. I don't want to because I'm
quite sure the impleme
On Mon, 9 May 2022 at 23:15, Dennis Lee Bieber
wrote:
>
> On Mon, 9 May 2022 21:11:23 +0200, Marco Sulla
> declaimed the following:
>
> >Nevertheless, tail is a fundamental tool in *nix. It's fast and
> >reliable. Also the tail command can't handle different
On Mon, 9 May 2022 at 19:53, Chris Angelico wrote:
>
> On Tue, 10 May 2022 at 03:47, Marco Sulla
> wrote:
> >
> > On Mon, 9 May 2022 at 07:56, Cameron Simpson wrote:
> > >
> > > The point here is that text is a very different thing. Because you
>
On Mon, 9 May 2022 at 07:56, Cameron Simpson wrote:
>
> The point here is that text is a very different thing. Because you
> cannot seek to an absolute number of characters in an encoding with
> variable sized characters. _If_ you did a seek to an arbitrary number
> you can end up in the middle of
On Sun, 8 May 2022 at 22:34, Barry wrote:
>
> > On 8 May 2022, at 20:48, Marco Sulla wrote:
> >
> > On Sun, 8 May 2022 at 20:31, Barry Scott wrote:
> >>
> >>>> On 8 May 2022, at 17:05, Marco Sulla
> >>>> wrote:
> >>>
&g
On Sun, 8 May 2022 at 22:02, Chris Angelico wrote:
>
> Absolutely not. As has been stated multiple times in this thread, a
> fully general approach is extremely complicated, horrifically
> unreliable, and hopelessly inefficient.
Well, my implementation is quite general now. It's not complicated a
On Sun, 8 May 2022 at 20:31, Barry Scott wrote:
>
> > On 8 May 2022, at 17:05, Marco Sulla wrote:
> >
> > def tail(filepath, n=10, newline=None, encoding=None, chunk_size=100):
> >n_chunk_size = n * chunk_size
>
> Why use tiny chunks? You can read 4KiB as f
I think I've _almost_ found a simpler, general way:
import os
_lf = "\n"
_cr = "\r"
def tail(filepath, n=10, newline=None, encoding=None, chunk_size=100):
n_chunk_size = n * chunk_size
pos = os.stat(filepath).st_size
chunk_line_pos = -1
lines_not_found = n
with open(filepath
On Sat, 7 May 2022 at 19:02, MRAB wrote:
>
> On 2022-05-07 17:28, Marco Sulla wrote:
> > On Sat, 7 May 2022 at 16:08, Barry wrote:
> >> You need to handle the file in bin mode and do the handling of line
> >> endings and encodings yourself. It’s not that hard
On Sat, 7 May 2022 at 16:08, Barry wrote:
> You need to handle the file in bin mode and do the handling of line endings
> and encodings yourself. It’s not that hard for the cases you wanted.
>>> "\n".encode("utf-16")
b'\xff\xfe\n\x00'
>>> "".encode("utf-16")
b'\xff\xfe'
>>> "a\nb".encode("utf-16
On Sat, 7 May 2022 at 01:03, Dennis Lee Bieber wrote:
>
> Windows also uses for the EOL marker, but Python's I/O system
> condenses that to just internally (for TEXT mode) -- so using the
> length of a string so read to compute a file position may be off-by-one for
> each EOL in the stri
I have a little problem.
I tried to extend the tail function, so it can read lines from the bottom
of a file object opened in text mode.
The problem is it does not work. It gets a starting position that is lower
than the expected by 3 characters. So the first line is read only for 2
chars, and th
On Mon, 2 May 2022 at 00:20, Cameron Simpson wrote:
>
> On 01May2022 18:55, Marco Sulla wrote:
> >Something like this is OK?
> [...]
> >def tail(f):
> >chunk_size = 100
> >size = os.stat(f.fileno()).st_size
>
> I think you want
Ok, I suppose \n and \r are enough:
readline(size=- 1, /)
Read and return one line from the stream. If size is specified, at
most size bytes will be read.
The line terminator is always b'\n' for binary files; for text files,
the newline argument to open() can be used to select the line
On Mon, 2 May 2022 at 18:31, Stefan Ram wrote:
>
> |The Unicode standard defines a number of characters that
> |conforming applications should recognize as line terminators:[7]
> |
> |LF:Line Feed, U+000A
> |VT:Vertical Tab, U+000B
> |FF:Form Feed, U+000C
> |CR:Carriage Return, U+0
I suppose you should write to python-...@python.org , or in
https://discuss.python.org/ under the section Core development
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Something like this is OK?
import os
def tail(f):
chunk_size = 100
size = os.stat(f.fileno()).st_size
positions = iter(range(size, -1, -chunk_size))
next(positions)
chunk_line_pos = -1
pos = 0
for pos in positions:
f.seek(pos)
chars = f.read(chunk_si
on code!
> If I understand Marco correctly, what he want is to read the lines from
> bottom to top, i.e. tac instead of tail, despite his subject.
> I use tail very frequently too, but tac is something I almost never use.
>
Well, the inverse reader is only a secondary suggestion
On Sun, 24 Apr 2022 at 00:19, Cameron Simpson wrote:
> An approach I think you both may have missed: mmap the file and use
> mmap.rfind(b'\n') to locate line delimiters.
> https://docs.python.org/3/library/mmap.html#mmap.mmap.rfind
>
Ah, I played very little with mmap, I didn't know about this.
On Sat, 23 Apr 2022 at 23:18, Chris Angelico wrote:
> Ah. Well, then, THAT is why it's inefficient: you're seeking back one
> single byte at a time, then reading forwards. That is NOT going to
> play nicely with file systems or buffers.
>
> Compare reading line by line over the file with readline
n". When it find it, it stops and do a readline():
def tail(filepath):
"""
@author Marco Sulla
@date May 31, 2016
"""
try:
filepath.is_file
fp = str(filepath)
except AttributeError:
fp = filepath
with open(fp, "
On Sat, 23 Apr 2022 at 20:59, Chris Angelico wrote:
>
> On Sun, 24 Apr 2022 at 04:37, Marco Sulla
> wrote:
> >
> > What about introducing a method for text streams that reads the lines
> > from the bottom? Java has also a ReversedLinesFileReader with Apac
I don't know in Python, but maybe you can create a script that writes
on a named pipe and read it from Python?
https://askubuntu.com/questions/226278/run-script-on-wakeup
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What about introducing a method for text streams that reads the lines
from the bottom? Java has also a ReversedLinesFileReader with Apache
Commons IO.
--
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On Sat, 16 Apr 2022 at 17:14, Peter J. Holzer wrote:
>
> On 2022-04-16 16:49:17 +0200, Marco Sulla wrote:
> > Furthermore, you didn't answer my simple question: why does the
> > security update package contain metadata about Debian patches, if the
> > Ubuntu secur
On Sat, 16 Apr 2022 at 10:15, Peter J. Holzer wrote:
> It doesn't (or at least you can't conclude that from the evidence you
> posted).
>
> There is a subdirectory called "debian" in the build directory of every
> .deb package. This is true on Debian, Ubuntu and every other
> distribution which us
On Thu, 14 Apr 2022 at 19:16, MRAB wrote:
>
> When you're working only with dates, timedelta not having a 'days'
> attribute would be annoying, especially when you consider that a day is
> usually 24 hours, but sometimes 23 or 25 hours (DST).
I agree. Furthermore, timedelta is, well, a time delta
On Wed, 13 Apr 2022 at 20:05, Peter J. Holzer wrote:
>
> On 2022-04-12 21:03:00 +0200, Marco Sulla wrote:
> > On Tue, 29 Mar 2022 at 00:10, Peter J. Holzer wrote:
> > > They are are about a year apart, so they will usually contain different
> > > versions of most
On Tue, 29 Mar 2022 at 00:10, Peter J. Holzer wrote:
> They are are about a year apart, so they will usually contain different
> versions of most packages right from the start. So the Ubuntu and Debian
> security teams probably can't benefit much from each other.
Well, this is what my updater on
On Sun, 3 Apr 2022 at 21:46, Peter J. Holzer wrote:
>
> > > data.get_deep("users", 0, "address", "street", default="second star")
>
> Yep. Did that, too. Plus pass the final result through a function before
> returning it.
I didn't understand. Have you added a func parameter?
> I'm not sure whet
On Sun, 3 Apr 2022 at 18:57, Dieter Maurer wrote:
> You know you can easily implement this yourself -- in your own
> `dict` subclass.
Well, of course, but the question is if such a method is worth to be
builtin, in a world imbued with JSON. I suppose your answer is no.
--
https://mail.python.org
On Sun, 3 Apr 2022 at 16:59, Kirill Ratkin via Python-list
wrote:
>
> Hi Marco.
>
> Recently I met same issue. A service I intergated with was documented
> badly and sent ... unpredictable jsons.
>
> And pattern matching helped me in first solution. (later I switched to
>
A proposal. Very often dict are used as a deeply nested carrier of
data, usually decoded from JSON. Sometimes I needed to get some of
this data, something like this:
data["users"][0]["address"]["street"]
What about something like this instead?
data.get_deep("users", 0, "address", "street")
and
On Thu, 31 Mar 2022 at 18:38, Cecil Westerhof via Python-list
wrote:
> Most people think that
> Ubuntu is that also, because it is based on Debian. But Ubuntu wants
> also provide the newest versions of software and this will affect the
> stability and security negatively.
I think you're referrin
Dirty suggestion: stderr?
On Thu, 31 Mar 2022 at 18:38, Cecil Westerhof via Python-list
wrote:
>
> In Python when the output of a script is going to a pipe stdout is
> buffered. When sending output to tee that is very inconvenient.
>
> We can set PYTHONUNBUFFERED, but then stdout is always unbuff
On Tue, 29 Mar 2022 at 00:10, Peter J. Holzer wrote:
> They are are about a year apart, so they will usually contain different
> versions of most packages right from the start. So the Ubuntu and Debian
> security teams probably can't benefit much from each other.
Are you sure? Since LTS of Debian
On Wed, 16 Mar 2022 at 09:11, Chris Angelico wrote:
> Caching the hash of a
> string is very useful; caching the hash of a tuple, not so much; again
> quoting from the CPython source code:
>
> /* Tests have shown that it's not worth to cache the hash value, see
>https://bugs.python.org/issue96
On Wed, 16 Mar 2022 at 00:59, Chris Angelico wrote:
>
> (Though it's a little confusing; a frozendict has to have nothing but
> immutable objects, yet it permits them to be unhashable?
It can have mutable objects. For example, a key k can have a list v as
value. You can modify v, but you can't as
On Wed, 16 Mar 2022 at 00:42, Cameron Simpson wrote:
>
> Is it sensible to compute the hash only from the immutable parts?
> Bearing in mind that usually you need an equality function as well and
> it may have the same stability issues.
[...]
> In that case I would be inclined to never raise Typ
On Sat, 12 Mar 2022 at 22:37, <2qdxy4rzwzuui...@potatochowder.com> wrote:
> Once hashing an object fails, why would an application try again? I can
> see an application using a hashable value in a hashable situation again
> and again and again (i.e., taking advantage of the cache), but what's
> th
On Mon, 14 Mar 2022 at 18:33, Loris Bennett wrote:
> I am not sure how different the two situations are. Ubuntu is
> presumably relying on the Debian security team as well as other
> volunteers and at least one company, namely Canonical.
So do you think that Canonical contributes to the LTS secu
think about? Here is the python code:
https://github.com/Marco-Sulla/python-frozendict/blob/35611f4cd869383678104dc94f82aa636c20eb24/frozendict/src/3_10/frozendictobject.c#L652-L697
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On Fri, 11 Mar 2022 at 19:10, Michael Torrie wrote:
> Both Debian stable and Ubuntu LTS state they have a five year support
> life cycle.
Yes, but it seems that official security support in Debian ends after
three years:
"Debian LTS is not handled by the Debian security team, but by a
separate g
On Fri, 11 Mar 2022 at 06:38, Dan Stromberg wrote:
> That's an attribute of your desktop environment, not the Linux distribution.
>
> EG: I'm using Debian with Cinnamon, which does support ctrl-alt-t.
Never used Cinnamon. It comes from Mint, right?
> Some folks say the desktop environment matter
On Thu, 10 Mar 2022 at 14:13, Jack Dangler wrote:
> or why not get a cloud desktop running whatever distro you want and you
> don't have to do anything
Three reasons: privacy, speed, price. Not in this order.
On Thu, 10 Mar 2022 at 15:20, Chris Angelico wrote:
> Very easy. I use Debian with Xfc
On Thu, 10 Mar 2022 at 04:50, Michael Torrie wrote:
>
> On 3/9/22 13:05, Marco Sulla wrote:
> > So my laziness pays. I use only LTS distros, and I update only when
> > there are security updates.
> > PS: any suggestions for a new LTS distro? My Lubuntu is reaching its
&
On Wed, 9 Mar 2022 at 23:28, Martin Di Paola wrote:
> Think in the immutable strings (str). What would happen with a program
> that does heavy parsing? I imagine that it will generate thousands of
> little strings. If those are immortal, the program will fill its memory
> very quickly as the GC wi
As title. dict can't be an immortal object, but hashable frozendict
and frozenmap can. I think this can increase their usefulness.
Another advantage: frozen dataclass will be really immutable if they
could use a frozen(dict|map) instead of a dict as __dict__
--
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So my laziness pays. I use only LTS distros, and I update only when
there are security updates.
PS: any suggestions for a new LTS distro? My Lubuntu is reaching its
end-of-life. I prefer lightweight debian-like distros.
On Tue, 8 Mar 2022 at 19:56, Ethan Furman wrote:
>
> https://arstechnica.com/
On Sun, 6 Mar 2022 at 03:20, Inada Naoki wrote:
> In general, when reference is borrowed from a caller, the reference is
> available during the API.
> But merge_dict borrows reference of key/value from other dict, not caller.
> [...]
> Again, insertdict takes the reference. So _PyDict_FromKeys() *
On Sat, 5 Mar 2022 at 17:36, Barry Scott wrote:
> Note: you usually cannot use pip when building an RPM with mock as the
> network is disabled inside the build for
> security reasons.
Can't he previously download the packages and run pip on the local packages?
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I noticed that some functions inside dictobject.c that call insertdict
or PyDict_SetItem do an incref of key and value before the call, and a
decref after it. An example is dict_merge. Other functions, such as
_PyDict_FromKeys, don't do an incref before.
When an incref of key and value is needed b
Maybe you compiled Python 2.7 by hand, David? It happened to me when I
tried to compile Python without zlib headers installed on my OS. Don't
know how it can be done on Windows.
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Narshad, I propose you post your questions to StackOverflow. I'm sure
they will be very happy.
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I agree with Chris. I don't know if it was already written: if you
want a local function for speed reasons, you can use the classic
approach of a main function.
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On Wed, 9 Feb 2022 at 20:40, Martin Di Paola wrote:
>
> If the logs are meant to be read by my users I log high level messages,
> specially before parts that can take a while (like the classic
> "Loading...").
? Logs are not intended to be read by end users. Logs are primarily
used to understand
These are a lot of questions. I hope we're not off topic.
I don't know if mine are best practices. I can tell what I try to do.
On Tue, 8 Feb 2022 at 15:15, Lars Liedtke wrote:
> - On a line per line basis? on a function/method basis?
I usually log the start and end of functions. I could also lo
You could add a __del__ that calls stop :)
On Wed, 2 Feb 2022 at 21:23, Cecil Westerhof via Python-list
wrote:
>
> I need (sometimes) to repeatedly execute a function. For this I wrote
> the below class. What do you think about it?
> from threading import Timer
>
>
>
> class repeated_tim
On Wed, 2 Feb 2022 at 14:34, Lars Liedtke wrote:
>
> This is a quite philosophical queston if you look at it in general:
> "What value do you give a variable, that is not set?"
Maybe I expressed my question badly. My existential doubt is why
setdefault has an optional parameter for the value and
Just out of curiosity: why dict.setdefault() has the default parameter
that well, has a default value (None)? I used setdefault in the past,
but I always specified a value. What's the use case of setting None by
default?
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and I had to Py_INCREF(memo)! Thank you A LOT!
On Mon, 31 Jan 2022 at 23:01, Chris Angelico wrote:
> On Tue, 1 Feb 2022 at 08:54, Marco Sulla
> wrote:
> > PyObject* d = PyDict_New();
> > args = PyTuple_New(2);
> > PyTuple_SET_ITEM(args, 0, d);
> >
Well, this is more or less what I'm trying to do.
I have an immutable object. I would have copy.deepcopy() will return the
object itself if it's hashable. If not, it must return a deepcopy of it.
So I tried to implement a __deepcopy__ for the object. It segfaults if the
object is not hashable. An
On Mon, 24 Jan 2022 at 05:37, Dennis Lee Bieber wrote:
> Note that the comparison warns that /indexing/ in pandas can be slow.
> If your manipulation is always "apply operationX to columnY" it should be
> okay -- but "apply operationX to the nth row of columnY", and repeat for
> other rows
Thank you a lot for letting me understand :)
On Tue, 11 Jan 2022 at 22:09, Peter J. Holzer wrote:
> On 2022-01-11 19:49:20 +0100, Marco Sulla wrote:
> > I think this is what you mean:
> >
> > >>> dis.dis("for _ in {1, 2}: pass")
> > 1
Sorry for being maybe a little OT. I tried to get help from other Conda
users, from chat and from the mailing list without success.
I would add a custom build on my conda package. Is there somewhere a doc or
an example about it?
(Specifically, I want to pass a custom parameter to the setup.py tha
Found. I simply forgot:
if (PyType_Ready(&PyFrozenDictIterKey_Type) < 0) {
goto fail;
}
in the frozendict_exec function for the module.
On Fri, 7 Jan 2022 at 20:27, Marco Sulla
wrote:
> I have a custom implementation of dict using a C extension. All works but
>
>> 12 POP_BLOCK
>> 14 LOAD_CONST 0 (None)
16 RETURN_VALUE
On Tue, 11 Jan 2022 at 01:05, Chris Angelico wrote:
> On Tue, Jan 11, 2022 at 10:26 AM Marco Sulla
> wrote:
> >
> > On Wed, 5 Jan 2022 at 23:02, Chris Angelico wrote
On Wed, 5 Jan 2022 at 23:02, Chris Angelico wrote:
>
> On Thu, Jan 6, 2022 at 8:01 AM Marco Sulla
> wrote:
> >
> > On Wed, 5 Jan 2022 at 14:16, Chris Angelico wrote:
> > > That's an entirely invisible optimization, but it's more than just
> >
0,
obj=obj@entry=0x7f043e1fb0b0, pers_save=pers_save@entry=0)
at /home/marco/sources/cpython_3_10/Modules/_pickle.c:4381
#3 0x7f043ce2534d in dump (self=self@entry=0x7f043d8507d0,
obj=obj@entry=0x7f043e1fb0b0) at
/home/marco/sources/cpython_3_10/Modules/_pickle.c:4515
#4 0x7f043
27;m starting to think that neither set nor frozenset are good
for dict items:
(venv_3_10) marco@buzz:~$ python
Python 3.10.0 (heads/3.10-dirty:f6e8b80d20, Nov 18 2021, 19:16:18)
[GCC 10.1.1 20200718] on linux
Type "help", "copyright", "credits" or "license&
On Wed, 5 Jan 2022 at 00:54, Chris Angelico wrote:
> That's because a tuple is the correct data type when returning two
> distinct items. It's not a list that has two elements in it; it's a
> tuple of (key, value). Immutability is irrelevant.
Immutability is irrelevant, speed no. A tuple is faste
On Tue, 4 Jan 2022 at 19:38, Chris Angelico wrote:
> [...] should the keys view be considered
> frozen or not? Remember the set of keys can change (when the
> underlying dict changes).
Well, also the items can change, but they are returned as tuples with
2 elements.
It seems to me that the stdli
$ python
Python 3.10.0 (heads/3.10-dirty:f6e8b80d20, Nov 18 2021, 19:16:18)
[GCC 10.1.1 20200718] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> a = {1:2}
>>> c = {1:2, 3:4}
>>> c.keys() - a.keys()
{3}
>>>
Why not frozenset({3})?
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https://askubuntu.com/questions/584857/distutilsextra-problem
On Sun, 2 Jan 2022 at 18:52, hongy...@gmail.com wrote:
>
> On Ubuntu 20.04.3 LTS, I try to install pdfarranger [1] as follows but failed:
>
> $ sudo apt-get install python3-pip python3-distutils-extra \
>
#if defined(RANDALL_WAS_HERE)
# define Py_UNREACHABLE() \
Py_FatalError( \
"If you're seeing this, the code is in what I thought was\n" \
"an unreachable state.\n\n" \
"I could give you advice for what to do, but honestly, why\n" \
"should you trust me? I clear
Ooookay, I suppose I have to study a little the thing :D
On Thu, 30 Dec 2021 at 07:59, Inada Naoki wrote:
>
> On Wed, Dec 29, 2021 at 7:25 PM Marco Sulla
> wrote:
> >
> > I noticed that now freelists in dict use _Py_dict_state. I suppose
> > this is done for thread sa
I created a type in a C extension, that is an immutable dict. If I do:
a: mydict[str, str]
it works. But it doesn't work with mypy, as signalled to me by an user:
https://github.com/Marco-Sulla/python-frozendict/issues/39
How can I make it work? I don't know what he means with
I agree with Barry. You can create a folder or a file with
pseudo-random names. I recommend you to use str(uuid.uuid4())
On Sat, 1 Jan 2022 at 14:11, Barry wrote:
>
>
>
> > On 31 Dec 2021, at 17:53, iMath wrote:
> >
> > 在 2021年12月30日星期四 UTC+8 03:13:21， 写道：
> >>> On Wed, 29 Dec 2021 at 18:33, iM
It was already done: https://pypi.org/project/tail-recursive/
On Thu, 30 Dec 2021 at 16:00, hongy...@gmail.com wrote:
>
> I try to compute the factorial of a large number with tail-recursion
> optimization decorator in Python3. The following code snippet is converted
> from the code snippet giv
On Wed, 29 Dec 2021 at 18:33, iMath wrote:
> But I found the size of the file of the shelve data didn't change much, so I
> guess the data are still in it , I just wonder any way to recover my data.
I agree with Barry, Chris and Avi. IMHO your data is lost. Unpickling
it by hand is a harsh work
On Wed, 29 Dec 2021 at 12:11, Dieter Maurer wrote:
>
> Marco Sulla wrote at 2021-12-29 11:59 +0100:
> >On Wed, 29 Dec 2021 at 09:12, Dieter Maurer wrote:
> >> `MutableMapping` is a so called abstract base class (--> `abc`).
> >>
> >> It uses the `__subcl
On Wed, 29 Dec 2021 at 09:12, Dieter Maurer wrote:
> `MutableMapping` is a so called abstract base class (--> `abc`).
>
> It uses the `__subclass_check__` (and `__instance_check__`) of
> `abc.ABCMeta` to ensure `issubclass(dict, MutableMapping)`.
> Those can be customized by overriding `MutableMap
I noticed that now freelists in dict use _Py_dict_state. I suppose
this is done for thread safety.
I would implement it also for a C extension that uses CPython < 3.10.
How can I achieve this?
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