e the length of the string before and after. If the lengths are
the same, nothing was removed.
Aye.
Cheers,
Cameron Simpson
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/is-not b" as overly prescriptive;
returning the same reference as one is given seems nearly the easiest
thing a function can ever do.
Cheers,
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On 21Mar2020 14:40, Eric V. Smith wrote:
On 3/21/2020 2:09 PM, Steven D'Aprano wrote:
If you want to know whether a prefix/suffix was removed, there's a
more
reliable way than identity and a cheaper way than O(N) equality. Just
compare the length of the string before and after. If the lengths
cut off and discarded, and it is clearly different from
"strip".
Please, NO. "trim" is a VERY well known PHP function, and does what our
strip does. I've very against this (otherwise fine) word for this
reason.
I still pref
mind they are quite different, which is the basis of my personal
dislike of reusing the word "strip". Just extending "strip()" with a
funky new affix mode would be even worse, since it can _still_ be
misleading if the caller omited the special mode.
Cheers,
Cameron Simpson
g.
That surprises me too. I expect the first matching affix to be used. It
is the only way for the caller to have a predictable policy.
As a diversion, _are_ there use cases where an empty affix is useful or
reasonable or likely?
Cheers,
Cameron Simpson
module name back from __str__ I'd be underwhelmed.
I think I'd at least like the behaviour switchable in some way.
Cheers,
Cameron Simpson
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On 26Mar2020 00:35, Serhiy Storchaka wrote:
26.03.20 00:08, Cameron Simpson пише:
I think a more "Python normal" module might have multiple enum
classes, maybe with overlapping names.
Do you have any examples of more "Python normal" modules?
Unfortunately no becaus
reiterate my huge -1 on "trim" because it will confuse every PHP user
who comes to us from the dark side. Over there "trim" means what our
"strip" means.
I've got (differing) opinions about the others, but "trim" is a big one
to me.
Cheers,
Ca
rule system, which prioritised rules by the lexical
length of their regexp, not their config file order of appearance. That
way lies (and, indeeed, lay) madness.
Cheers,
Cameron Simpson
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ath through the JSON
module seems... clunky.
Cheers,
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Message archiv
On 14Apr2020 23:08, Glenn Linderman wrote:
On 4/14/2020 10:09 PM, Cameron Simpson wrote:
Like many others, I recently implemented one of these
__getattr__+__getitem__ SimpleNamespaces. I'm hacking on some
mappings which map dotted-names to values. So the natural
implementation is dic
ll in the one memory space.
Cheers,
Cameron Simpson
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Message archived at
htt
seems to have a personal dislike for me, and I'm fearing
something similar may be at play for you.
Again, my apologies to other list members.
Thanks,
Cameron Simpson
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nyway, I'd like to know how this might affect try/except setups,
particularly ones like the above which expect to catch a class of error
and differentiate amongst them.
I am not against the issue suggest though.
Cheers,
Cameron Simpson
On 24May2020 14:59, Gregory P. Smith wrote:
Sound
;, it also said
"specified by PEP424 [link]", since I had to go find that with a search
engine to understand the rationale.
Would PRs with such patches be welcome?
Cheers,
Cameron Simpson
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On 13Sep2020 20:51, Guido van Rossum wrote:
>On Sun, Sep 13, 2020 at 8:12 PM Cameron Simpson wrote:
>> As a concrete example, for __length_hint__ and operator.length_hint,
>> I
>> wish that in addition to saying "New in version 3.4", it also said
>> "s
now, the devguide has the details including for the inline markup role :pep:.
>
>https://devguide.python.org/documenting/#rest-inline-markup
Thanks Ned. - Cameron Simpson
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On 14Sep2020 18:17, Terry Reedy wrote:
>On 9/14/2020 5:25 AM, Cameron Simpson wrote:
>>On 14Sep2020 01:16, Ned Deily wrote:
>>>My suggestion would be to open one BPO issue for "adding PEP
>>>references to documentation" and then creating PRs as needed again
On 14Sep2020 18:17, Terry Reedy wrote:
>On 9/14/2020 5:25 AM, Cameron Simpson wrote:
>>On 14Sep2020 01:16, Ned Deily wrote:
>>>>I'll make some PRs. How to submit? Here, or a BPO or something?
>>>
>>>My suggestion would be to open one BPO issue for &quo
On 05Oct2020 22:14, Tal Einat wrote:
>You have my thanks as well, Larry.
And mine. - Cameron Simpson
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o disc
regularly (or frequently, at any rate) anyway. What's too big a window
of potential loss?
For myself, I'm against libraries that implicitly do fsyncs, especially
if the user can't issue policy about it.
Cheers,
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If
On 10Mar2009 22:14, A.M. Kuchling wrote:
| On Wed, Mar 11, 2009 at 11:31:52AM +1100, Cameron Simpson wrote:
| > On 10Mar2009 18:09, A.M. Kuchling wrote:
| > | The mailbox module tries to be careful and always fsync() before
| > | closing files, because mail messages are pretty
hand to os.fsync() et al. Having sync() and
datasync() methods in the object would obviate the need for the caller
to know the object internals.
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I must construct my own System, or be enslaved to another Man&#
nc,
probably because it really is only feasible to say "get to a particular
checkpoint in the journal". Many other filesystems will have similar
degrees of granularity, perhaps not all.
Anyway, fsync is a much bigger ask than close, and should be used very
sparingly.
Cheers,
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dge the data before the medium has
completed updating.
Cheers,
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Isaac Asimov once remarked that friends had chided him for not patenting the
electronic pocket calculator, since he wrote of similar devices back in the
1940's. His re
with a clear conscience.
Cheers,
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DRM: the functionality of refusing to function. - Richard Stallman
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_ and append_ methods with set and
list behaviour. Feels a little like API bloat, though the convenience
function can be nice.
Cheers,
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The wonderous pulp and fibre of the brain had been substituted by brass and
iron; he had taught w
like using
Python2 for that.
Finally, I have a small python program whose whole purpose in life
is to transcode UNIX filenames before transfer to a MacOSX HFS
directory, because of HFS's enforced particular encoding. What approach
should a Python app take to transcode UNIX pathnames under your s
e-byte stuff to be off in the "posix" module if os.* goes pure
character instead of bytes or bytes+strings.
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... that, in a few years, all great physical constants will have been
approximately estimated, and that the only occu
understand from the rest of your message what
|would *actually* break if people would use the proposed interfaces.
My other longer message describes what would break, if I understand your
proposal.
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that
the API uses C strings, which are NUL terminated.
So, yes, you could use NUL as an escape character if you're sure you're
never dealing with _non_POSIX pathnames:-)
Cheers,
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| I'm the female partner of a climber (
On 25Apr2009 14:07, "Martin v. Löwis" wrote:
| Cameron Simpson wrote:
| > On 22Apr2009 08:50, Martin v. Löwis wrote:
| > | File names, environment variables, and command line arguments are
| > | defined as being character data in POSIX;
| >
| > Specific citation plea
nism that uses displayable characters would have
> an advantage there.
Wouldn't any escaping mechanism that uses displayable characters
require visually mangling occurences of those characters that
legitimately occur in the original?
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elucidate the "second source" of strings. I'm presuming you mean
strings egenrated from scratch rather than obtained by something like
listdir().
Given such a string with "funny invalid" stuff in it, and _absent_
Martin's scheme, what do you expect the source o
thing that failed.
Yes, they would. Are you doing that on a real UNIX filesystem
(ext2/3/4, XFS etc)?
I'm not sure whether you're arguing for or against the propsal here,
btw.
This would make a file with a presumably UTF-8-invalid name. Martin's
proposal would cheerfully map th
h cleanly
takes unicode (I gather) but perhaps handy for people hacking filesystems
directly or something like that. (Except I gather from a former existence
that there is a multitude of on-disk filename encoding under WIndows
depending how old your filesystems are and if they're FAT or N
t;second source" of strings. I'm presuming you mean
>> strings egenrated from scratch rather than obtained by something like
>> listdir().
>>
>
> POSIX has byte APIs for strings, that's one source, that is most under
> d
On 27Apr2009 21:58, Benjamin Peterson wrote:
| 2009/4/27 Cameron Simpson :
| > PROPOSAL: add to the PEP the following functions:
[...]
| > and for me, I would like to see:
| > os.setfilesystemencoding(coding)
| >
| > Currently os.getfilesystemencoding() returns you the encoding b
I think I may be able to resolve Glenn's issues with the scheme lower
down (through careful use of definitions and hand waving).
On 27Apr2009 23:52, Glenn Linderman wrote:
> On approximately 4/27/2009 7:11 PM, came the following characters from
> the keyboard of Cameron Simpson:
[..
perform:
os-bytes->funny-encoded
funny-encoded->os-bytes
or explicit example code snippets for same in the PEP text.
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This person is currently undergoing electric shock therapy at Agnews
Developmental Center in San Jose,
equire some app care for particular very weird strings
that don't come from the filesystem, but as far as I can see only in
circumstances where such care would be needed anyway i.e. you've got to
do special stuff for weirdness in the first place. Weird == "ill-formed
unicode string&
#x27;m more concerned with your (yours? someone else's?) mention of shift
characters. I'm unfamiliar with these encodings: to translate such a
thing into a Latin example, is it the case that there are schemes with
valid encodings that look like:
[SHIFT] a b c
which would produce "
On 29Apr2009 08:27, Martin v. L?wis wrote:
| > I would like utility functions to perform:
| > os-bytes->funny-encoded
| > funny-encoded->os-bytes
| > or explicit example code snippets for same in the PEP text.
|
| Done!
Thanks!
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27;re seeing an artifact; did python move from UNIX to Windows or the
other way around in its porting history? I'd guess the former.
Do you get differing results from listdir(".") and listdir(b".") ?
How's python2 behave for ""? (Since there's no b"
I believe is just not
>> there).
>>
>> Well, here's another one: PEP 383 would disallow UTF-8 encodings of
>> half surrogates.
>
> By my reading, the current Unicode 5.1 definition of 'UTF-8' disallows that.
5.0 also disallows it. No surprise I guess.
--
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ding anyway, at least to
some extent, and thus not trip over the PEP?
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Clemson is the Harvard of cardboard packaging.
- overhead by WIRED at the Intelligent Printing conference Oct2006
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ning from rare illegal
strings to merely uncommon but legal characters.
- Some parties think it would be better to not return strings from
os.listdir but a subclass of string (or at least a duck-type of
string) that knows where it came from and is also handily
recognisable as
r, his assertion/hope is true only if srcencoding == 'utf-8'.
The PEP itself says that it works if the decode and encode use the same
mapping.
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"How do you know I'm Mad?" asked Alice.
"You must be,&qu
(never having used
peek()), my own desire would normally be for a peek(n, block=False) a
bit like Queue.get(). Then I could be sure not to block if I wanted to
avoid it, even on a blocking stream, yet still obtain unread buffered
data if present.
So: what do people use peek() for, mostly?
Cheer
t to see if there's stuff in the
buffer _without_ doing any raw reads at all. A peek0(n), if you will:
Read and return up to n bytes without calling on the raw stream.
It feels like peek is trying to span both extremes and doesn't satisfy
either really well.
If peek gets enhanced to act l
On 14Jun2009 15:16, I wrote:
| Is it possible to access the buffer? I see nothing in the docs.
I've just found getvalue() in IOBase. Forget I said anything.
It seems to be my day for that kind of post:-(
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These are but
On 14Jun2009 09:21, Benjamin Peterson wrote:
| 2009/6/14 Cameron Simpson :
| > On 14Jun2009 15:16, I wrote:
| > | Is it possible to access the buffer? I see nothing in the docs.
| >
| > I've just found getvalue() in IOBase. Forget I said anything.
| > It seems to be my day f
ad of a Queue I'd want
to poll for "buffer empty". If there isn't an empty buffer I know there
will be a packet worth of data coming immediately and I can pick it up
with regular read()s, just as I'm doing with Q.get() above. But if the
buffer is empty I can drop
On 16Jun2009 11:21, Greg Ewing wrote:
> Cameron Simpson wrote:
>> It seems like whenever I want to do some kind of opportunistic but
>> non-blocking stuff with a remote service
>
> Do you actually do this with buffered streams?
Sure, in C, python and perl quite happily.
My concerns would go away if I could probe the buffer content size;
then I could ensure peek(n) chose n <= the content size. If that's not
enough, my problem - I can choose to read-and-block or go away and come
back later.
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If al
try/except at least closes things as
control passes out of the relevant scope. I don't think all pythons
do immediate ref-counted GC.
But it's very neat!
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Trust the computer industry to shorten Year 2000 to Y2K. It was this
think
On 17Jun2009 10:55, Greg Ewing wrote:
> Cameron Simpson wrote:
>> I normally avoid
>> non-blocking requirements by using threads, so that the thread gathering
>> from the stream can block.
>
> If you have a thread dedicated to reading from that
> stream, then I don&#
pect to the upcoming Python 2.6.3?
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Life is pleasant. Death is peaceful. It's the transition that's troublesome.
- Isaac Asimov
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for methods that produce addresses!
| If I want just an IPAddress object, then I can
| always fetch the "ip" attribute to get that. Perhaps there is some
| compelling conceptual argument as to why this is not correct, but it
| seems like the API destroys information needlessly.
I really think
0]
| returns.
Yes, I think Eric was complaining about the name being "network", since
we have Network objects and this isn't one.
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it's a vote for
availability of the sequence-of-letters style.
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The most annoying thing about being without my files after our disc crash was
discovering once again how widespread BLINK was on the web.
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though.
+1 to both sentences from me.
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xpensive, might easily return
the same element to every caller.
Do anyone feel an iteration capable .get() unduely burdens subclasses
that want to impement different .get()s? Both the suggested potential
subclass choices (round robin and random) suggest iteration capable
.get()s (presuming "
On 02Nov2009 10:21, Antoine Pitrou wrote:
| Cameron Simpson zip.com.au> writes:
| >
| > Personally, I'm for the iteration spec in a lot of ways.
| >
| > Firstly, a .get()/.pick() that always returns the same element feels
| > horrible. Is there anyone here who _likes_ i
On 04Nov2009 09:46, Steven D'Aprano wrote:
| On Tue, 3 Nov 2009 09:19:38 am Greg Ewing wrote:
| > Cameron Simpson wrote:
| > > Personally, I'm for the iteration spec in a lot of ways.
For the record, I've since, in mere hours or day, been convinced my
preference was misgu
on other Pythons.
I know this is a slightly thin objection, since your change can probably
be taken to the other implementations.
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plementation (i.e. the base offset this pop(0) opt would incur,
which adds a (small) cost to everything).
The other aspect, mentioned elsewhere in this thread, is that
programmers should know the O() cost of these operations.
Cheers,
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On 27Jan2010 23:08, Nick Coghlan wrote:
| Cameron Simpson wrote:
| > The proposed change to make pop(0) O(1) involves adding a base offset
| > to the internal list implementation. Doesn't that incur a (small)
| > overhead to _every_ list operation? Doesn't that weaken &q
nt
anyway; I can't fairly claim to have had it cause me trouble yet.
(Indeed, I've not used the new GIL at all - it's mostly using python
2.6).
Cheers,
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I very strongly suggest that you periodical
ued which work for a
substantial time, and meanwhile a bunch of tiny tiny cheap requests arrive.
Their timely response will be impacted by this issue.
Cheers,
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hybrid rather than pure; compromising rather than clean;
distorted rather t
omewhat in parallel. Here one
can get a compute bound thread answering one request, impacting quick
response to other parallel-and-cheap requests.
Cheers,
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Here was a man who not only had a ready mind and a quick wit,
but could also si
On 16Mar2010 08:59, "Martin v. Löwis" wrote:
| Cameron Simpson wrote:
| > On 15Mar2010 09:28, Martin v. L�wis wrote:
| > | > As for the argument that an application with cpu intensive work being
| > | > driven by the IO itself will work itself out... No it won't
he tasks blocked
waiting for something to happen get to run more immediately when an event
does occur, you tend to get better "responsiveness".
Cheers,
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Be smart, be safe, be paranoid.
se an exception or refuse to create __pycache__ if it's not writable
| (again, by whom?)
-3
Bleah. My python program won't run because an obscure (to the user)
directory had unusual permissions?
Tough ove, it's the only way:-)
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eption.
Cheers,
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ortcut for "--version" looks wrong, though.
| "-v" is almost always used for verbosity these days.
My view is the same.
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By dint of railing at idiots one runs the risk of becoming idiotic oneself.
- Gustave F
is the simple and obvious and
commonly wanted mode and --foo-tweak is a special case.
Real world example: rsync and the --delete* options. I'm sure plenty of
others can be found.
The new behaviour makes this doable. The old behaviour made it
unimplementable. Maybe it i
ky here about intent, especially since a few messages in the
thread is contemplate testing function for equivalence to one degree or
other. At which point "==" and "is" aren't the same any more.
Cheers,
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Car
ishly
printed their repr in debug statements. They can be... wordy. Maybe a
cropped repr, or the .__class__ attribute?
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Every technical corrigendum is met by an equally troublesome new defect report.
- Norman Di
asynchronous modes for future
possibly-concurrent execution, just as the futures module does. I've
spent a _lot_ of time debugging it.
There's a lot to be said for a robust implementation of a well defined
problem. Brian's module, had it been present and presuming it robust and
debug
uggestion too?
Disclaimer: I am _not_ a dev.
Cheers,
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nt setup should live and is not what
should be used in this patch.
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Shape without form, shade without colour,
Paralysed force, gesture without motion;- T.S. Eliot, _The Hollow Men_
__
sing a lot of bugs that most devs don't think should be closed
and could not be dissuaded from doing so I can't see an alternative.
I'm just saying I think the tone if his responses in the thread cited
isn't as negative to my eye as people are making out.
Cheers,
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.
2: -1; the current behaviour is, IMHO, highly desirable.
Example:
x=3; y=7; z=12
s='ahahahahahahahaha'
assert s[:x]+s[x:y]+s[y:z]+s[z:] == s
No icky +1 hacks in there.
3: I find myself doing the +1 thing very _un_often, myself.
Cheers,
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needs no papping or extra storage. Of course, it
removes certain freedoms from the GC etc as a side effect.
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The number of cylinders for this disk is set to 364737.
There is nothing wrong with that, but this is larger than
cases and probably an example of diff
friendliness:
x = f(a,
b=3,
##c=4, hacking at dev time
d=5)
Cheers,
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A Master is someone who started before you did. - Gary Zukav
r Mercurial so you could do the usual "hg
commit" command without going through the outer wrapper.
I'll devote a little time today, since I've missed this little hack:-(
Interested?
Cheers,
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We don't just *borro
son.
Same issue with "capsules" (yes I know you weren't serious) - too
generic a term, too vague.
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It looked good-natured, she thought; Still it had very long claws and a
great many teeth, so she felt it ough
over the modules
trees looking for identical module files to hard link and if you've got
several kernels lying around it is unforgivably slow. Or maybe it loads
the package install db into memory and does something expensive to see
what's not accounted for.
[ end speculation, but nothi
but before executing the module body?
Sometimes names are made by executing the module body.
Since one expects to access the module's names after the import, how is
this avoidable?
Cheers,
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What's the point of having
th the lack of hierarchical directories.
Aye, but I've frequently tripped over people blithely saying "general to
specific" for nesting without realising that the axes were orthoganal,
not inherently nested.
Not arguing for or against, btw.
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converstion, shouldn't read() raise an
exception if asked for < 1 bytes? Or is there a legitimate use for read(0)
with which I was not previously aware?
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_
On 22Jul2008 20:56, John J Lee <[EMAIL PROTECTED]> wrote:
> On Tue, 22 Jul 2008, Cameron Simpson wrote:
> [...]
>> Leaving aside the 0.2 => 0 converstion, shouldn't read() raise an
>> exception if asked for < 1 bytes? Or is there a legitimate use for read(0)
On 21Jul2008 23:35, Leif Walsh <[EMAIL PROTECTED]> wrote:
| On Tue, 22 Jul 2008, Cameron Simpson wrote:
| > Leaving aside the 0.2 => 0 converstion, shouldn't read() raise an
| > exception if asked for < 1 bytes? Or is there a legitimate use for
| > read(0) with which
d thus I'm -1 on the original suggestion too (also for the if/while
confusion mentioned in the thread).
Cheers,
--
Cameron Simpson DoD#743
http://www.cskk.ezoshosting.com/cs/
Drive Agressively Rash Magnificently - Nankai Leathers
___
ut it neatly handled the
fact that the while-test must often be preceeded by some setup that
would be replicated at the loop bottom in Python and many other languages:
setup-invariant-state
while test-invariant
do stuff
setup-invariant-state
of which the bare while... and converse do...wh
|
| "The construction '\0' is commonly used to represent the null character."
|
| So I think it should be either NUL or "null character" with the lower
| case spelling.
+1 from me, too.
--
Cameron Simpson DoD#743
http://www.cskk.ezoshosting.com/cs/
I like to kee
nly -0 for
| FileSystemError (so I expect that will be the option chosen, given
| other responses).
I also use "filesystem" as a one word piece of jargon, but I am
persuaded by the language arguments. So I'm +1 for FileSystemError.
Cheers,
--
Cameron Simpson DoD#743
http://www.cskk.e
#x27;s as bad as compiling stuff as root etc etc. A bad idea all around,
securitywise.
Especially, I would think, a builtbot. "Oh, let's fetch some shiny new
code and run it as the system superuser."
I know this post sounds shouty, but I've just reread it a few times and
still cannot br
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