Strax-Haber, Matthew (LARC-D320) wrote:
A folder is created during object instantiation. This is necessary because
multiple other methods depend on the existence of that folder, and in the
future things may be running in parallel so it has to be there for the
entire life of the object. Before the
Le Mon, 18 May 2009 23:16:13 +0100,
"Alan Gauld" s'exprima ainsi:
> "spir" wrote
>
> > Also, it's the first time I really have to cope with machine-time;
> > so I'm totally new to technics like using a profiler.
> > Any hints on the topics heartfully welcome :-)
>
> Profilers are a bit like
Hello,
This is a follow the post on performance issues.
Using a profiler, I realized that inside error message creation, most of the
time was spent in a tool func used to clean up source text output.
The issue is that when the source text holds control chars such as \n, then the
error message is
Le Tue, 19 May 2009 09:12:34 +0200,
"A.T.Hofkamp" s'exprima ainsi:
> A folder is created during object instantiation.
Do you mean a filesytem directory? I may be wrong, bit it seems there is a bit
of confusion between things and their representation as python objects.
You shouldn't call __del_
On Mon, May 18, 2009 at 2:49 PM, spir wrote:
> Hello,
>
> I have an big performance problem with an app I'm currently working on.
> It "suddenly" runs at least 5 times slower that it used to. The issue is,
> beeing in a finalization phase, I'm all the time touching thingies here and
> there. But
Le Tue, 19 May 2009 11:36:17 +0200,
spir s'exprima ainsi:
> Hello,
>
> This is a follow the post on performance issues.
> Using a profiler, I realized that inside error message creation, most of
> the time was spent in a tool func used to clean up source text output. The
> issue is that when the
On Tue, May 19, 2009 at 5:36 AM, spir wrote:
> Hello,
>
> This is a follow the post on performance issues.
> Using a profiler, I realized that inside error message creation, most of the
> time was spent in a tool func used to clean up source text output.
> The issue is that when the source text h
spir wrote:
def _cleanRepr(text):
''' text with control chars replaced by repr() equivalent '''
chars = []
for char in text:
n = ord(char)
if (n < 32) or (n > 126 and n < 160):
char = repr(char)[1:-1]
Kent Johnson wrote:
The Python profiler is not hard to run. Interpreting the results is
more difficult :-) See the docs to get started:
http://docs.python.org/library/profile.html
Also, it's quite useful to run it as a module:
python -mcProfile
You have a certain amount of configurability v
2009/5/19 spir :
> def _cleanRepr(text):
> ''' text with control chars replaced by repr() equivalent '''
> result = ""
> for char in text:
> n = ord(char)
> if (n < 32) or (n > 126 and n < 160):
> char = repr(char)[1:-1]
>
By the way, the timeit module is very helpful for comparing the speed
of different implementations of an algorithm such as are being
presented in this thread. You can find examples in the list archives:
http://search.gmane.org/?query=timeit&group=gmane.comp.python.tutor
Kent
__
how can i make odbc connection language and i wanna make gui project after
connecting database anyone has document ?
--
Mustafa Akkoc
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Denis,
Untested idea:
1. Fill a dict with pre-calculated repr() values for chars you want to
replace (replaceDict)
2. Create a set() of chars that you want to replace (replaceSet).
3. Replace if (n < 32) ... test with if char in replaceSet
4. Lookup the replacement via replaceDict[ char ] vs.
On 5/19/2009 5:47 AM mustafa akkoc said...
how can i make odbc connection language and i wanna make gui project
after connecting database anyone has document ?
There's an odbc module in python. I'd start with the docs on that and
then google 'python odbc example' for more info and examples.
On Tue, May 19, 2009 at 5:55 AM, spir wrote:
> Le Tue, 19 May 2009 09:12:34 +0200,
> "A.T.Hofkamp" s'exprima ainsi:
>
>> A folder is created during object instantiation.
>
> Do you mean a filesytem directory? I may be wrong, bit it seems there is a
> bit of confusion between things and their rep
spir wrote:
Hello,
This is a follow the post on performance issues.
Using a profiler, I realized that inside error message creation, most of the
time was spent in a tool func used to clean up source text output.
The issue is that when the source text holds control chars such as \n, then the
er
Le Tue, 19 May 2009 11:36:17 +0200,
spir s'exprima ainsi:
[...]
Thank you Albert, Kent, Sanders, Lie, Malcolm.
This time regex wins! Thought it wouldn't because of the additional func call
(too bad we cannot pass a mapping to re.sub). Actually the diff. is very small
;-) The relevant change
Denis,
Thank you for sharing your detailed analysis with the list.
I'm glad on didn't bet money on the winner :) ... I'm just as surprised
as you that the regex solution was the fastest.
Malcolm
___
Tutor maillist - Tutor@python.org
http://mail.pyt
On 5/19/2009 10:19 AM spir said...
Le Tue, 19 May 2009 11:36:17 +0200,
spir s'exprima ainsi:
[...]
Thank you Albert, Kent, Sanders, Lie, Malcolm.
This time regex wins! Thought it wouldn't because of the additional func call
(too bad we cannot pass a mapping to re.sub). Actually the diff. is
Le Tue, 19 May 2009 10:49:15 -0700,
Emile van Sebille s'exprima ainsi:
> On 5/19/2009 10:19 AM spir said...
> > Le Tue, 19 May 2009 11:36:17 +0200,
> > spir s'exprima ainsi:
> >
> > [...]
> >
> > Thank you Albert, Kent, Sanders, Lie, Malcolm.
> >
> > This time regex wins! Thought it wouldn't
"David Stanek" wrote
But I think (someone confirms/contradicts?) there is no harm
in overloading a class's __del__ to accomplish additional tasks
such as deleting temp disk space/dirs/files that need to exist
only during object creation.
Incorrect.
Why?
implementation. By the time it
On Tue, May 19, 2009 at 1:19 PM, spir wrote:
> Thank you Albert, Kent, Sanders, Lie, Malcolm.
>
> This time regex wins! Thought it wouldn't because of the additional func call
> (too bad we cannot pass a mapping to re.sub). Actually the diff. is very
> small ;-) The relevant change is indeed us
"spir" wrote
def _cleanRepr(text):
''' text with control chars replaced by repr() equivalent '''
result = ""
for char in text:
n = ord(char)
if (n < 32) or (n > 126 and n < 160):
char = repr(char)[1:-1]
result += char
return result
I haven't read the rest of the r
On 5/19/2009 11:22 AM spir said...
I thought at this solution (having a dict for all chars). But I cannot use it
because later I will extend the app to cope with unicode (~ 100_000 chars). So
that I really need to filter which chars have to be converted.
That seems somewhat of a premature op
"mustafa akkoc" wrote
how can i make odbc connection language and i wanna make gui project
after
connecting database anyone has document ?
There are lots of GUI options for python but if you want to do a database
centred GUI and have no previous knowledge to leverage then dabo
is probably y
Le Tue, 19 May 2009 19:27:16 +0100,
"Alan Gauld" s'exprima ainsi:
> > def __del__(self):
> >try:
> >self.f.close()
> >except:
> >pass
>
> This is, I agree, pointless. but very different to:
>
> def __ del__(self):
> try:
> os.remove(self.lockname)
> e
On Sunday 17 May 2009 21:54:54 Kent Johnson wrote:
> On Sat, May 16, 2009 at 10:26 PM, Sylvain Ste-Marie
>
> wrote:
> > I'm currently writing a script to batch convert video for my psp
> >
> > It basically looks into a folder for video and launch ffmpeg:
> >
> > ffmpeg -i "videoname" -f psp -r 29.
Le Tue, 19 May 2009 23:09:33 +0300,
Roger s'exprima ainsi:
> As a Java programmer just starting with Python, this answer surprised me. I
> would've been googling for the Python equivalent of the Singleton pattern.
> I guess it's going to take longer than I thought to get my head around the
> dif
On Tue, May 19, 2009 at 4:09 PM, Roger wrote:
> As a Java programmer just starting with Python, this answer surprised me. I
> would've been googling for the Python equivalent of the Singleton pattern.
> I guess it's going to take longer than I thought to get my head around the
> differences.
A S
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