Re: MemoryError, can I use more?

2010-02-14 Thread Tommy Grav
On Feb 14, 2010, at 10:16 PM, Dave Angel wrote: > There are three different limits at play here. Since you're still not saying > how you're "measuring" usage, we've all been guessing just which one you're > hitting. There's physical RAM, virtual address space, and swappable space > (swapfile

Re: MemoryError, can I use more?

2010-02-14 Thread Dave Angel
Echavarria Gregory, Maria Angelica wrote: Dear Chris, One of the machines I tested my app in is 64 bit and happened the same. The RAM consumed by the OS and other processes is already included in the 2.2 I'm telling... my app enters to work when the RAM is already consumed in ~600 MB in the 3

Re: new python install

2010-02-14 Thread Tim Chase
monkeys paw wrote: Upon invoking python, it hangs until Ctrl^C is typed, and then the >>> interactive shell begins. Like so: joemoney% python Python 2.4.6 (#1, Dec 13 2009, 23:45:11) [C] on sunos5 Type "help", "copyright", "credits" or "license" for more information. # Hangs ^^^ at this point

Re: MemoryError, can I use more?

2010-02-14 Thread Tommy Grav
On Feb 14, 2010, at 7:20 PM, Echavarria Gregory, Maria Angelica wrote: > > Dear Chris, > > One of the machines I tested my app in is 64 bit and happened the same. The > RAM consumed by the OS and other processes is already included in the 2.2 I'm > telling... my app enters to work when the RA

Re: Modifying Class Object

2010-02-14 Thread Alf P. Steinbach
* Ethan Furman: Steve Howell wrote: Going back to pointers vs. references, I think the key distinction being made is that pointers allow specific memory manipulation, although I think even there you're really just dealing with abstractions. The address 0x78F394D2 is a little bit closer to the

FW: MemoryError, can I use more?

2010-02-14 Thread Echavarria Gregory, Maria Angelica
Dear Chris, One of the machines I tested my app in is 64 bit and happened the same. The RAM consumed by the OS and other processes is already included in the 2.2 I'm telling... my app enters to work when the RAM is already consumed in ~600 MB in the 3- 32 bit machines ... in the 64 bit machine

FW: MemoryError, can I use more?

2010-02-14 Thread Echavarria Gregory, Maria Angelica
I use the physical and kernel memory boxes in the windows task manager under the performance tab... in that way I can see the exact RAM that just OS and idle processes occupy before I run my app, and then also the limit at which my app pushes the memory... M. Angelica Echavarria-Gregory, M.Sc

Re: Modifying Class Object

2010-02-14 Thread Ethan Furman
Steve Howell wrote: On Feb 14, 7:11 am, Steven D'Aprano wrote: On Sat, 13 Feb 2010 23:45:47 -0800, Steve Howell wrote: The term "pointer" is very abstract. Please give me a concrete definition of a pointer. A programming language data type whose value directly specifies (or "points to") a

Re: MemoryError, can I use more?

2010-02-14 Thread Diez B. Roggisch
Am 14.02.10 12:28, schrieb Laszlo Nagy: 2010.02.13. 17:40 keltezéssel, Diez B. Roggisch írta: Am 13.02.10 17:18, schrieb Anssi Saari: Nobody writes: A single process can't use much more than 2GiB of RAM without a 64-bit CPU and OS. That's not really true. Even Windows XP has the /3GB boot o

new python install

2010-02-14 Thread monkeys paw
Upon invoking python, it hangs until Ctrl^C is typed, and then the >>> interactive shell begins. Like so: joemoney% python Python 2.4.6 (#1, Dec 13 2009, 23:45:11) [C] on sunos5 Type "help", "copyright", "credits" or "license" for more information. # Hangs ^^^ at this point until ^C is typed ^C

Re: MemoryError, can I use more?

2010-02-14 Thread Ross Ridge
"Diez B. Roggisch" writes: > No, PAE can be used to access much more memory than 4GB - albeit > through paging. AFAIK up to 2^36 Bytes. Anssi Saari wrote: >That too. I admit, after checking, that you can't go above 3 GiB per >process even in server Windows. But for Linux there exists (or >exist

Re: Function attributes [OT]

2010-02-14 Thread Steve Holden
Terry Reedy wrote: > On 2/13/2010 8:14 AM, Steve Holden wrote: > >> Gmane is primarily a news (NNTP-based) service, though for reasons best >> know to the organizers they choose to rename the standard newsgroups to >> fit their own idea of how the universe should be organized, so there the >> grou

Re: Function attributes [OT]

2010-02-14 Thread Terry Reedy
On 2/13/2010 8:14 AM, Steve Holden wrote: Gmane is primarily a news (NNTP-based) service, though for reasons best know to the organizers they choose to rename the standard newsgroups to fit their own idea of how the universe should be organized, so there the group becomes gmane.comp.python.gener

Re: python crash on windows but not on linux

2010-02-14 Thread Roel Schroeven
Op 2010-02-13 13:14, Alf P. Steinbach schreef: > * hjebbers: >> I enlarged the windows page file from 750Kb to 1.5Gb . >> The crash still happens. >> btw, the crash does not happen at a peak memory usage. >> According to windows task manager, at the moment of crash mem usage of >> my program is 669

Re: Fighting with subprocess.Popen

2010-02-14 Thread Christian Heimes
Mr.John wrote: > Below is a test case that demonstrates this. Tests 1 & 2 concatenate the > command and the argument, Tests 3 & 4 mimic the python docs and use the form > Popen(["mycmd", "myarg"], ...), which never seems to work. It doesn't work with shell=True because the shell is not able to int

Re: equivalent of Ruby's Pathname?

2010-02-14 Thread Aahz
In article <8fc356e0-f3ed-4a67-9b37-f21561cef...@p13g2000pre.googlegroups.com>, Sean DiZazzo wrote: >On Feb 8, 2:36=A0pm, a...@pythoncraft.com (Aahz) wrote: >> In article .com>, >> Sean DiZazzo =A0 wrote: >>> >>>Why did Path() get rejected? Is it the idea itself, or just the >>>approach that was

Fighting with subprocess.Popen

2010-02-14 Thread Mr.John
I'm using Python 2.6.2 as packaged with Fedora 12. I'm trying to use subprocess.Popen() to call /usr/bin/pactl, a simple PulseAudio command parser. I'm having a hard time, because it only works part of the time. If pactl gets a blank or invalid command, it says "No valid command specified.", and t

Re: Python Optimization

2010-02-14 Thread Steve Howell
On Feb 14, 11:52 am, Mark Dickinson wrote: > On Feb 14, 4:53 pm, mukesh tiwari > wrote: > > > Hello everyone. I am new to python and previously i did programming in > > c/c++.Could some one please help me to improve the run time for this > > python program as i don't have idea how to optimized th

Re: Python Optimization

2010-02-14 Thread Mark Dickinson
On Feb 14, 4:53 pm, mukesh tiwari wrote: > Hello everyone. I am new to python and previously i did programming in > c/c++.Could some one please help me to improve the run time for this > python program as i don't have idea how to optimized this code.This > code also seems to be more unpythonic so

Re: Python Optimization

2010-02-14 Thread Mark Dickinson
On Feb 14, 6:03 pm, a...@pythoncraft.com (Aahz) wrote: > In article > <363498c7-3575-4f1e-ad53-d9cd10c8d...@q16g2000yqq.googlegroups.com>, > Mark Dickinson   wrote: > > >(2) Obvious things: use range rather than xrange in your loops.   > > Um, what?  You meant the reverse, surely? Er, yes I did.

Re: Please help with MemoryError

2010-02-14 Thread Steve Howell
On Feb 11, 5:50 pm, Steven D'Aprano wrote: > On Thu, 11 Feb 2010 15:39:09 -0800, Jeremy wrote: > > My Python program now consumes over 2 GB of memory and then I get a > > MemoryError.  I know I am reading lots of files into memory, but not 2GB > > worth. > > 2.    When do I need > > to manually a

Re: Please help with MemoryError

2010-02-14 Thread Steve Howell
On Feb 14, 10:32 am, Steve Holden wrote: > rantingrick wrote: > > On Feb 12, 4:10 pm, Steve Holden wrote: > >> Antoine Pitrou wrote: > >>> Le Fri, 12 Feb 2010 17:14:57 +, Steven D'Aprano a écrit : > > > On Feb 12, 4:10 pm, Steve Holden wrote: > >> Antoine Pitrou wrote: > >>> Le Fri, 12 Feb 2

Re: Python Optimization

2010-02-14 Thread Steve Howell
On Feb 14, 9:48 am, Mark Dickinson wrote: > On Feb 14, 4:53 pm, mukesh tiwari > wrote: > > > Hello everyone. I am new to python and previously i did programming in > > c/c++.Could some one please help me to improve the run time for this > > python program as i don't have idea how to optimized thi

Re: Please help with MemoryError

2010-02-14 Thread Steve Holden
rantingrick wrote: > On Feb 12, 4:10 pm, Steve Holden wrote: >> Antoine Pitrou wrote: >>> Le Fri, 12 Feb 2010 17:14:57 +, Steven D'Aprano a écrit : > > On Feb 12, 4:10 pm, Steve Holden wrote: >> Antoine Pitrou wrote: >>> Le Fri, 12 Feb 2010 17:14:57 +, Steven D'Aprano a écrit : > > Stev

Re: shelve.open generates (22, 'Invalid argument') Os X 10.5 with Python 2.5

2010-02-14 Thread Aahz
In article <7a9d26a8-0a9f-4bf3-bf50-0ac5e337f...@r24g2000yqd.googlegroups.com>, seth wrote: > >We have a code that creates a simple Python shelve database. We are >able to serialize objects and store them in the dbm file. This seem to >work the same on Windows XP Python 2.5, Ubuntu 9.1 with Pytho

Re: Comparing file last access date

2010-02-14 Thread MRAB
kak...@gmail.com wrote: Hi to all, what i want is to search a folder, and if the last access date of the files in that folder is greater than, lets say 7 days, those files deleted. (Somekind of a file cleaner script) I had problems with converting now = today = datetime.date.today() and stats =

Re: Python Optimization

2010-02-14 Thread Aahz
In article <363498c7-3575-4f1e-ad53-d9cd10c8d...@q16g2000yqq.googlegroups.com>, Mark Dickinson wrote: > >(2) Obvious things: use range rather than xrange in your loops. Um, what? You meant the reverse, surely? -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/

Comparing file last access date

2010-02-14 Thread kak...@gmail.com
Hi to all, what i want is to search a folder, and if the last access date of the files in that folder is greater than, lets say 7 days, those files deleted. (Somekind of a file cleaner script) I had problems with converting now = today = datetime.date.today() and stats = os.stat(file) lastAccessDa

Re: Modifying Class Object

2010-02-14 Thread Steve Howell
On Feb 14, 7:11 am, Steven D'Aprano wrote: > On Sat, 13 Feb 2010 23:45:47 -0800, Steve Howell wrote: > > The term "pointer" is very abstract.  Please give me a concrete > > definition of a pointer. > > A programming language data type whose value directly specifies (or > "points to") another value

Re: Python Optimization

2010-02-14 Thread Mark Dickinson
On Feb 14, 4:53 pm, mukesh tiwari wrote: > Hello everyone. I am new to python and previously i did programming in > c/c++.Could some one please help me to improve the run time for this > python program as i don't have idea how to optimized this code. > [...] How much of a speedup do you need? Ar

Re: plugin / intra process communication system

2010-02-14 Thread Diez B. Roggisch
Am 14.02.10 13:05, schrieb Florian Ludwig: On Sun, 2010-02-14 at 10:16 +0100, Paul Kölle wrote: Am 13.02.2010 10:50, schrieb Florian Ludwig: Hi, I'm looking for a module/plugin/intra-process-communication/hook system for python. Maybe someone here could point me to some project I missed or mig

Re: Hashing in python

2010-02-14 Thread MRAB
Martin v. Loewis wrote: floor(x) returns an integer Why do you say that? Assuming you are talking about math.floor, it works differently for me: py> math.floor(10.0/3) 3.0 I've just double-checked. It returns a float in Python 2.x and an int in Python 3.x. (I recently switched to Python 3.1.

Re: Python Optimization

2010-02-14 Thread Mark Lawrence
mukesh tiwari wrote: Hello everyone. I am new to python and previously i did programming in c/c++.Could some one please help me to improve the run time for this python program as i don't have idea how to optimized this code.This code also seems to be more unpythonic so how to make it look like mo

Python Optimization

2010-02-14 Thread mukesh tiwari
Hello everyone. I am new to python and previously i did programming in c/c++.Could some one please help me to improve the run time for this python program as i don't have idea how to optimized this code.This code also seems to be more unpythonic so how to make it look like more pythonic . I am tryi

Re: Modifying Class Object

2010-02-14 Thread Steven D'Aprano
On Sat, 13 Feb 2010 23:45:47 -0800, Steve Howell wrote: > The term "pointer" is very abstract. Please give me a concrete > definition of a pointer. A programming language data type whose value directly specifies (or "points to") another value which is stored elsewhere in the computer memory.

Re: problem with QtSignals "object has no attribute 'emit'"

2010-02-14 Thread Phil Thompson
On Sun, 14 Feb 2010 13:17:40 +0100, News123 wrote: > Hi, > > I'm having a rather small code snippet, where I create pyQT signals. > I manage creating a signal as class attribute, > but I can't create a list of signals or a signal > as object.member. > > >> from PyQt4.QtGui import * >> from PyQt

Re: How to solve an LCP (linear complementarity problem) in python ?

2010-02-14 Thread Helmut Jarausch
On 02/14/10 12:52, abent wrote: > Is there a good library to numericly solve an LCP in python ? > (http://en.wikipedia.org/wiki/Linear_complementarity_problem) > > An example would be very helpful because most libraries seem to only > solve QP's. > I need this for computing 2d contact forces in a

problem with QtSignals "object has no attribute 'emit'"

2010-02-14 Thread News123
Hi, I'm having a rather small code snippet, where I create pyQT signals. I manage creating a signal as class attribute, but I can't create a list of signals or a signal as object.member. > from PyQt4.QtGui import * > from PyQt4.QtCore import * > > class MyWin(QMainWindow): > clssig = py

LaTeX parser and pstricks generator in python

2010-02-14 Thread Laurent Claessens
Hi all. I just put online a first version of two tools that combine LaTeX and python. The first one, phystricks[1], is a python module intended to generate pstricks code. The main features are * you don't have to know pstricks (but you need to have some basics in python) * you have python instead

Re: plugin / intra process communication system

2010-02-14 Thread Florian Ludwig
On Sun, 2010-02-14 at 10:16 +0100, Paul Kölle wrote: > Am 13.02.2010 10:50, schrieb Florian Ludwig: > > Hi, > > > > I'm looking for a module/plugin/intra-process-communication/hook system > > for python. Maybe someone here could point me to some project I missed > > or might have some good ideas i

How to solve an LCP (linear complementarity problem) in python ?

2010-02-14 Thread abent
Is there a good library to numericly solve an LCP in python ? (http://en.wikipedia.org/wiki/Linear_complementarity_problem) An example would be very helpful because most libraries seem to only solve QP's. I need this for computing 2d contact forces in a rigid body simulation. -- http://mail.pytho

Re: problem with floats and calculations

2010-02-14 Thread Stefan Krah
Karsten Goen wrote: > also this doesn't help, there are still errors in the accuracy. Isn't there a > perfect way to do such calculations? The hint I gave you removes the most egregious error in your program. You still have to quantize the result of (c*var*d) / b) if you want it to match a. If I

Re: problem with floats and calculations

2010-02-14 Thread Mark Lawrence
[fix top posting] Karsten Goen wrote: hey all, I got a problem with floats and calculations. I made an mini-application where you get random questions with some science calculations in it So the user can type in his result with the values given by random creation. And the user value is comp

Re: MemoryError, can I use more?

2010-02-14 Thread Laszlo Nagy
2010.02.13. 17:40 keltezéssel, Diez B. Roggisch írta: Am 13.02.10 17:18, schrieb Anssi Saari: Nobody writes: A single process can't use much more than 2GiB of RAM without a 64-bit CPU and OS. That's not really true. Even Windows XP has the /3GB boot option to allow 3 GiB per process. On PC

Re: problem with floats and calculations

2010-02-14 Thread Karsten Goen
also this doesn't help, there are still errors in the accuracy. Isn't there a perfect way to do such calculations? Karsten Goen wrote: > > hey all, > > I got a problem with floats and calculations. I made an mini-application > where > > you get random questions with some science calculations in i

Re: problem with floats and calculations

2010-02-14 Thread Stefan Krah
Karsten Goen wrote: > hey all, > I got a problem with floats and calculations. I made an mini-application where > you get random questions with some science calculations in it > So the user can type in his result with the values given by random creation. > And the user value is compared against th

Re: Hashing in python

2010-02-14 Thread Martin v. Loewis
> CELL_SIZE = 4 > > def key(point): > > return ( > int((floor(point[0]/CELL_SIZE))*CELL_SIZE), > int((floor(point[1]/CELL_SIZE))*CELL_SIZE), > int((floor(point[2]/CELL_SIZE))*CELL_SIZE) > ) > > > Since python allows keys to be tuples, I think that this should wor

problem with floats and calculations

2010-02-14 Thread Karsten Goen
hey all, I got a problem with floats and calculations. I made an mini-application where you get random questions with some science calculations in it So the user can type in his result with the values given by random creation. And the user value is compared against the computer value... the problem

Re: Hashing in python

2010-02-14 Thread Martin v. Loewis
> floor(x) returns an integer Why do you say that? Assuming you are talking about math.floor, it works differently for me: py> math.floor(10.0/3) 3.0 Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list

Re: plugin / intra process communication system

2010-02-14 Thread Paul Kölle
Am 13.02.2010 10:50, schrieb Florian Ludwig: Hi, I'm looking for a module/plugin/intra-process-communication/hook system for python. Maybe someone here could point me to some project I missed or might have some good ideas if I end up implementing it myself. Most systems I have found are "one to

Re: Modifying Class Object

2010-02-14 Thread Stephen Hansen
On Sun, Feb 14, 2010 at 12:15 AM, Steve Howell wrote: > On Feb 10, 6:16 am, Steven D'Aprano cybersource.com.au> wrote: > > > > Alf, although your English in this forum has been excellent so far, I > > understand you are Norwegian, so it is possible that you aren't a native > > English speaker an

Re: Modifying Class Object

2010-02-14 Thread Stephen Hansen
On Sat, Feb 13, 2010 at 7:59 AM, Michael Sparks wrote: > Hi Alf, > > > On Feb 12, 8:22 pm, "Alf P. Steinbach" wrote: > > Thanks for the effort at non-flaming discussion, it *is* > > appreciated. > > I would appreciate it if you tried to be non-flaming yourself, > since you can see I am not flami

Re: Modifying Class Object

2010-02-14 Thread Steve Howell
On Feb 10, 6:16 am, Steven D'Aprano wrote: > > Alf, although your English in this forum has been excellent so far, I > understand you are Norwegian, so it is possible that you aren't a native > English speaker and possibly unaware that quotation marks are sometimes > ambiguous in English. > > Whil