[ANN] Release 0.61.5 of Task Coach

Hi all, Release 0.61.5 of Task Coach is a bug-fix release that hopefully fixes the following bug that was introduced in release 0.61.4: * Opening a Task Coach file with many effort records is slow. Opening an edit dialog for a task with many effort records is slow too. What is Task Coach?

ANN: Portable Python free portable development environment !

Hi there, I would like to announce the *first* beta release of the Portable Python 1.0 beta. From today Portable Python website is also online and you can find it on the location www.PortablePython.com. About: Portable Python is a Python programming language preconfigured to run directly from a

Re: File Closing Problem in 2.3 and 2.4, Not in 2.5 (Final report)

In [EMAIL PROTECTED], Julio Biason wrote: If I use a file() in a for, how to I explicitely close the file? code for line in file('contents'): print line /code Would this work like the new 'with' statement or it will only be closed when the GC finds it? Only when the GC destroys it.

Re: Bitwise expression

Gigs_ [EMAIL PROTECTED] wrote: Now is all clearer thanks to [EMAIL PROTECTED] and Hendrick van Rooyen Contrary to popular belief in the English speaking world - c in Hendrik False There is no c in Hendrik : - )- Hendrik -- http://mail.python.org/mailman/listinfo/python-list

Re: Colons, indentation and reformatting. (2)

Jorgen Grahn [EMAIL PROTECTED]wrote: On 8 Jan 2007 23:57:29 -0800, Paddy [EMAIL PROTECTED] wrote: OK, whilst colons are not sufficient to re-format a completely mis-indented file. I'm thinking that they are sufficient for reformatting most pasted code blocks when refactoring say?

Re: Why less emphasis on private data?

Steven D'Aprano [EMAIL PROTECTED] wrote: On Tue, 09 Jan 2007 10:27:56 +0200, Hendrik van Rooyen wrote: Steven D'Aprano [EMAIL PROTECTED] wrote: On Mon, 08 Jan 2007 13:11:14 +0200, Hendrik van Rooyen wrote: When you hear a programmer use the word probability - then its time to

Re: Parallel Python

I always thought that if you use multiple processes (e.g. os.fork) then Python can take advantage of multiple processors. I think the GIL locks one processor only. The problem is that one interpreted can be run on one processor only. Am I not right? Is your ppm module runs the same

Re: Xah's Edu Corner: Introduction to 3D Graphics Programing

[EMAIL PROTECTED] wrote: And the core folks around the project are either science educators or Python folks - there is little C++ expertise currently involved with the project. The project is looking for help. Anyone willing to jump in should perhaps reply here or at: [snip address] I

Re: distutils and ctypes

Robert Kern wrote: [EMAIL PROTECTED] wrote: So finally, my question is, is there a way to get distutils to simply build a shared library on windows so that I can use ctypes with them??? Not out-of-box, no. The OOF2 project has added a bdist_shlib command which should do most of what you

Re: distutils and ctypes

Martin v. Löwis wrote: Robert Kern schrieb: To which I say that doing the type-checking and error handling is much easier in Python than using the C API. Add to that the tediousness of the edit-compile-run cycle of C and the finickiness of refcounting. Sure: edit-compile-run is

Question about compiling.

I *just* read the tutorial so please be gentle. I created a file called fib.py which works very nicely thank you. When I run it it does what it's supposed to do but I do not get a resulting .pyc file. The tutorial says I shouldn't do anything special to create it. I have machines that have both

Establishing if an Object is Defined

Hi, The following code works - one = 1 if one == 1: ok = 1 print ok but this does not, without exception - one = 2 if one == 1: ok = 1 print ok How do I establish before printing ok if it actually exists so as to avoid this exception? Thanks for your help, Barry. --

Re: Establishing if an Object is Defined

[EMAIL PROTECTED] a écrit : Hi, The following code works - one = 1 if one == 1: ok = 1 print ok but this does not, without exception - one = 2 if one == 1: ok = 1 print ok How do I establish before printing ok if it actually exists so as to avoid this exception? ok = 0

Re: Question about compiling.

At Tuesday 9/1/2007 14:56, Steven W. Orr wrote: I *just* read the tutorial so please be gentle. I created a file called fib.py which works very nicely thank you. When I run it it does what it's supposed to do but I do not get a resulting .pyc file. The tutorial says I shouldn't do anything

Re: Why less emphasis on private data?

At Wednesday 10/1/2007 04:33, Hendrik van Rooyen wrote: Oh I am of the opposite conviction - Like the fellow of the Circuit Cellar I forget his name ( Steve Circia (?) ) who said: My favourite Programming Language is Solder.. Almost right: Steve Ciarcia. -- Gabriel Genellina Softlab SRL

Re: Maths error

In article [EMAIL PROTECTED], Tim Peters [EMAIL PROTECTED] writes: | | Huh. I don't read it that way. If it said numbers can be ... I | might, but reading that way seems to requires effort to overlook the | decimal in decimal numbers can be I wouldn't expect YOU to read it that way,

Re: Establishing if an Object is Defined

[EMAIL PROTECTED] a écrit : Hi, The following code works - one = 1 if one == 1: ok = 1 print ok but this does not, without exception - one = 2 Are you competing for the Most Misleading Name Award(tm) ?-) if one == 1: ok = 1 print ok How do I establish before printing ok

Re: pyExcelerator big integer values

Thank you, the repr() function helped me a lot. v = unicode(values[(row_idx, col_idx)]) if v.endswith('e+12'): v = repr(values[(row_idx, col_idx)]) -- http://mail.python.org/mailman/listinfo/python-list

Re: maximum number of threads

At Wednesday 10/1/2007 04:38, Paul Sijben wrote: I have a server in Python 2.5 that generates a lot of threads. It is running on a linux server (Fedora Core 6). The server quickly runs out of threads. File /usr/local/lib/python2.5/threading.py, line 434, in start

RE: dynamic library loading, missing symbols

Some random notes below ... -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] g] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, January 10, 2007 1:26 AM Subject: dynamic library loading, missing symbols The reason for the complication is that I don't have

convert binary data to int

Hello, I need to convert a 3 byte binary string like \x41\x00\x00 to 3 int values ( (65,0,0) in this case). The string might contain characters not escaped with a \x, like A\x00\x00 Any ideas? Daniel -- http://mail.python.org/mailman/listinfo/python-list

Re: convert binary data to int

[EMAIL PROTECTED] wrote: I need to convert a 3 byte binary string like \x41\x00\x00 to 3 int values ( (65,0,0) in this case). The string might contain characters not escaped with a \x, like A\x00\x00 [ord(c) for c in A\x00\x41] [65, 0, 65] For more complex conversions look into the struct

Re: convert binary data to int

[EMAIL PROTECTED] a écrit : Hello, I need to convert a 3 byte binary string like \x41\x00\x00 to 3 int values ( (65,0,0) in this case). The string might contain characters not escaped with a \x, like A\x00\x00 Any ideas? s = \x41\x00\x00 [ ord(c) for c in s ] [65, 0, 0] --

Is there a way to protect a piece of critical code?

Hi, I would like to do the following as one atomic operation: 1) Append an item to a list 2) Set a Boolean indicator It would be almost like getting and holding the GIL, to prevent a thread swap out between the two operations. - sort of the inverted function than for which the GIL seems to be

Re: convert binary data to int

At Wednesday 10/1/2007 07:17, [EMAIL PROTECTED] wrote: I need to convert a 3 byte binary string like \x41\x00\x00 to 3 int values ( (65,0,0) in this case). The string might contain characters not escaped with a \x, like A\x00\x00 py [ord(x) for x in \x41\x00\x00] [65, 0, 0] py [ord(x) for x

Re: convert binary data to int

[ord(x) for ...] perfect, thank you Daniel -- http://mail.python.org/mailman/listinfo/python-list

add re module to a embeded device phyton interpreter

I hav to add the re (regular expressions) functionality to an Embeded device that I'm using. I read the re.py file and it says I need several dependencies, one of them is the pcre module but I found no pcre.py or pcre.pyc file. Someone knows where to find something to solve my problem. Thanks

Re: Is there a way to protect a piece of critical code?

Hendrik van Rooyen wrote: Hi, I would like to do the following as one atomic operation: 1) Append an item to a list 2) Set a Boolean indicator It would be almost like getting and holding the GIL, to prevent a thread swap out between the two operations. - sort of the inverted function

Re: Is there a way to protect a piece of critical code?

At Wednesday 10/1/2007 07:14, Hendrik van Rooyen wrote: I would like to do the following as one atomic operation: 1) Append an item to a list 2) Set a Boolean indicator Wouldn't a thread.Lock object serve your purposes? -- Gabriel Genellina Softlab SRL

Re: maximum number of threads

On 1/10/07, Gabriel Genellina [EMAIL PROTECTED] wrote: At Wednesday 10/1/2007 04:38, Paul Sijben wrote: Does anyone know what it going on here and how I can ensure that I have all the threads I need? Simply you can't, as you can't have 1 open files at once. Computer resources are not

Re: maximum number of threads

Gabriel Genellina wrote: Simply you can't, as you can't have 1 open files at once. Computer resources are not infinite. sure but *how* fast they run out is the issue here Do you really need so many threads? I might be able to do with a few less but I still need many. I have done a

Re: maximum number of threads

Felipe Almeida Lessa wrote: Maybe Stackless could help the OP? http://www.stackless.com/ thanks I will look into it! -- http://mail.python.org/mailman/listinfo/python-list

Re: convert binary data to int

in some cases struct.unpack would also help [EMAIL PROTECTED] wrote: Hello, I need to convert a 3 byte binary string like \x41\x00\x00 to 3 int values ( (65,0,0) in this case). The string might contain characters not escaped with a \x, like A\x00\x00 Any ideas? Daniel --

Re: pyExcelerator big integer values

Gacha wrote: Thank you, the repr() function helped me a lot. v = unicode(values[(row_idx, col_idx)]) if v.endswith('e+12'): v = repr(values[(row_idx, col_idx)]) That endswith() looks rather suspicious ... what if it's +11 or +13, and shouldn't it have a zero in it, like +012 ?? Here's

Re: add re module to a embeded device phyton interpreter

odlfox wrote: I hav to add the re (regular expressions) functionality to an Embeded device that I'm using. I read the re.py file and it says I need several dependencies, one of them is the pcre module but I found no pcre.py or pcre.pyc file. Someone knows where to find something to solve

Re: Is there a way to protect a piece of critical code?

Hendrik van Rooyen wrote: Hi, I would like to do the following as one atomic operation: 1) Append an item to a list 2) Set a Boolean indicator I doubt you have to worry at all about this in such simple single-single queue - if there is not a much more complex condition upon the insert

Re: Is there a way to protect a piece of critical code?

Hendrik van Rooyen [EMAIL PROTECTED] writes: I would like to do the following as one atomic operation: 1) Append an item to a list 2) Set a Boolean indicator You could do it with locks as others have suggested, but maybe you really want the Queue module. --

Re: maximum number of threads

Paul Sijben a écrit : Gabriel Genellina wrote: Simply you can't, as you can't have 1 open files at once. Computer resources are not infinite. sure but *how* fast they run out is the issue here Do you really need so many threads? I might be able to do with a few less but I still

Re: maximum number of threads

On 1/10/07, Laurent Pointal [EMAIL PROTECTED] wrote: This is a system configurable limit (up to a maximum). See ulimit man pages. test ulimit -a to see what are the current limits, and try with ulimit -u 2000 to modify the maximum number of user process (AFAIK each thread

Re: maximum number of threads

On Wed, 10 Jan 2007 12:11:59 -0200, Felipe Almeida Lessa [EMAIL PROTECTED] wrote: On 1/10/07, Laurent Pointal [EMAIL PROTECTED] wrote: This is a system configurable limit (up to a maximum). See ulimit man pages. test ulimit -a to see what are the current limits, and try with

An iterator with look-ahead

For use in a hand-coded parser I wrote the following simple iterator with look-ahead. I haven't thought too deeply about what peek ought to return when the iterator is exhausted. Suggestions are respectfully requested. As it is, you can't be sure what a peek() = None signifies until the next

Re: Internet Survey

In article [EMAIL PROTECTED], Elan Magavi [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hello all, I represent Octabox, an Internet Start-up developing a wide-scale platform for Internet services. We are very interested to know your thoughts on

Re: maximum number of threads

Jean-Paul Calderone wrote: On Wed, 10 Jan 2007 12:11:59 -0200, Felipe Almeida Lessa [EMAIL PROTECTED] wrote: On 1/10/07, Laurent Pointal [EMAIL PROTECTED] wrote: This is a system configurable limit (up to a maximum). See ulimit man pages. test ulimit -a to see what are the current

Re: Internet Survey

In article [EMAIL PROTECTED], zoara [EMAIL PROTECTED] wrote: On 9 Jan 2007 06:58:15 -0800, [EMAIL PROTECTED] wrote: Hello all, I represent Octabox, an Internet Start-up developing a wide-scale platform for Internet services. We are very interested to know your thoughts on Internet

Re: dynamic library loading, missing symbols

Did you verify, using nm -D, that the symbol is indeed present in the shared object, not just in the source code? Yes, the symbol is found in the shared object when using nm. What flags are given to that dlopen call? dlopen(lib, RTLD_NOW | RTLD_GLOBAL); No. The dynamic linker doesn't

Re: maximum number of threads

All thanks for all the input! This was very informative. Looks like I indeed need stackless as my code benefits from being concurrently designed. Paul Jean-Paul Calderone wrote: On Wed, 10 Jan 2007 12:11:59 -0200, Felipe Almeida Lessa [EMAIL PROTECTED] wrote: On 1/10/07, Laurent Pointal

Re: An iterator with look-ahead

Neil Cerutti wrote: For use in a hand-coded parser I wrote the following simple iterator with look-ahead. I haven't thought too deeply about what peek ought to return when the iterator is exhausted. Suggestions are respectfully requested. As it is, you can't be sure what a peek() = None

Working with named groups in re module

A found some clues on lexing using the re module in Python in an article by Martin L÷wis. http://www.python.org/community/sigs/retired/parser-sig/towards-standard/ He writes: [...] A scanner based on regular expressions is usually implemented as an alternative of all token definitions. For

Need startup suggestions for writing a MSA viewer GUI in python

Hi! I've been thinking about writing a good multiple sequence alignment (MSA) viewer in python. Sort of like ClustalX, only with better zoom and pan tools. I've been using python in my work for a couple of years, but this is my first shot at making a GUI so I'd very much appreciate some ideas

Re: Need startup suggestions for writing a MSA viewer GUI in python

On 1/10/07, Joel Hedlund [EMAIL PROTECTED] wrote: Hi! I've been thinking about writing a good multiple sequence alignment (MSA) viewer in python. Sort of like ClustalX, only with better zoom and pan tools. I've been using python in my work for a couple of years, but this is my first shot at

Re: An iterator with look-ahead

On 2007-01-10, Fredrik Lundh [EMAIL PROTECTED] wrote: if you're doing simple parsing on an iterable, it's easier and more efficient to pass around the current token and the iterator's next method: http://online.effbot.org/2005_11_01_archive.htm#simple-parser-1 Thank you. Much better. --

Re: Working with named groups in re module

Neil Cerutti wrote: A found some clues on lexing using the re module in Python in an article by Martin L÷wis. Here, each alternative in the regular expression defines a named group. Scanning proceeds in the following steps: 1. Given the complete input, match the regular expression

Re: Internet Survey

On Tue, 9 Jan 2007 20:16:01 +, in comp.arch.embedded Pete Fenelon [EMAIL PROTECTED] wrote: In comp.arch.embedded [EMAIL PROTECTED] wrote: Hello all, I represent Octabox, an Internet Start-up developing a wide-scale Hello. F*ck off, spammer. pete a bit more subtle

Using Excel With Python

I'm very new to Python, well IronPython to precise, and have been having problems when using Excel. The problem I'm having is the closing of my Excel object. I'm able to successfully quit the Excel Application that I create, but when I open a Workbook in the Application I can't successfully Quit

Using Excel With Python

I'm very new to Python, well IronPython to precise, and have been having problems when using Excel. The problem I'm having is the closing of my Excel object. I'm able to successfully quit the Excel Application that I create, but when I open a Workbook in the Application I can't successfully Quit

Using Excel With Python

I'm very new to Python, well IronPython to precise, and have been having problems when using Excel. The problem I'm having is the closing of my Excel object. I'm able to successfully quit the Excel Application that I create, but when I open a Workbook in the Application I can't successfully Quit

Building Python 2.5.0 on AIX 5.3 - Undefined symbol: .__floor

Hello, I'm trying to build Python 2.5.0 on AIX 5.3 using IBM's compiler (VisualAge C++ Professional / C for AIX Compiler, Version 6). I run configure and make, but makes fails with undefined symbols. See the output from configure and make below. svnadm /svn/build/python-2.5.0env CC=cc CXX=xlC

Re: Internet Survey

On Wed, 10 Jan 2007 08:28:33 -0600, [EMAIL PROTECTED] wrote (in article [EMAIL PROTECTED]): In article [EMAIL PROTECTED], Elan Magavi [EMAIL PROTECTED] wrote: Is that like.. OctaPussy? I didn't read their stuff. Are they really trying to put a round peg in a square hole? Sounds more

Re: (newbie) Is there a way to prevent name redundancy in OOP ?

Carl Banks wrote: Martin Miller wrote: Carl Banks wrote: Martin Miller wrote: ### non-redundant example ### import sys class Pin: def __init__(self, name, namespace=None): self.name = name if namespace == None: # default to

Re: Need startup suggestions for writing a MSA viewer GUI in python

Joel Hedlund wrote: Hi! I've been thinking about writing a good multiple sequence alignment (MSA) viewer in python. Sort of like ClustalX, only with better zoom and pan tools. I've been using python in my work for a couple of years, but this is my first shot at making a GUI so I'd very

Re: Yield

Mathias Panzenboeck wrote: def primes(): yield 1 yield 2 [snip rest of code] Hmm... 1 is not a prime. See for instance http://en.wikipedia.org/wiki/Prime_number The definition given there is In mathematics /wiki/Mathematics, a *prime number* (or a *prime*) is a

Re: Yield

I wrote: The definition given there is In mathematics /wiki/Mathematics, a *prime number* (or a *prime*) is a natural number /wiki/Natural_number that has exactly two (distinct) natural number divisors /wiki/Divisor. The important part of the statement is exactly two...divisors, which

call graph using python and cscope

Sometimes it is nice to have the data used by cscope accessible in a programatic way. The following python script extract the functions called information from cscope (function: callGraph) and produced an html file from them. from csCallGraph import * acg=callGraph(entryFun,workingDir)

SubProcess _make_inheritable

SubProcess.py needs to be patched - at least in 2.4 - to work from windows GUIs: def _make_inheritable(self, handle): Return a duplicate of handle, which is inheritable if handle==None: handle=-1 return DuplicateHandle(GetCurrentProcess(), handle,

Re: Execute binary code

Chris Mellon wrote: This works fine if the binary data is pure asm, but the impresssion the OP gave is that it's a compiled binary, which you can't just jump into this way. You may have to offset the function pointer so the entry point becomes correct. --

Re: maximum number of threads

Jean-Paul Calderone wrote: Indeed you are correct. The actual limit you are hitting is the size of your address space. Each thread is allocated 8MB of stack. 382 threads consumes about 3GB of address space. Even though most of this memory isn't actually allocated, the address space is

Re: Working with named groups in re module

On 2007-01-10, Fredrik Lundh [EMAIL PROTECTED] wrote: Neil Cerutti wrote: A found some clues on lexing using the re module in Python in an article by Martin L÷wis. Here, each alternative in the regular expression defines a named group. Scanning proceeds in the following steps: 1.

Re: Need startup suggestions for writing a MSA viewer GUI in python

On 2007-01-10, hg [EMAIL PROTECTED] wrote: Joel Hedlund wrote: Thanks for taking the time! /Joel Hedlund I do not know if PyGtk and PyQT have demos, but wxPython does and includes PyPlot: an easy way to look at the basic features. PyQT does come with an impressive plethora of demos. --

Regex Question

Hello all, I've got a test script: start python code = tests2 = [item1: alpha; item2: beta. item3 - gamma--, item1: alpha; item3 - gamma--] def test_re(regex): r = re.compile(regex, re.MULTILINE) for test in tests2: res = r.search(test) if res:

Re: Internet Survey

In article [EMAIL PROTECTED], Lefty Bigfoot [EMAIL PROTECTED] wrote: On Wed, 10 Jan 2007 08:28:33 -0600, [EMAIL PROTECTED] wrote (in article [EMAIL PROTECTED]): In article [EMAIL PROTECTED], Elan Magavi [EMAIL PROTECTED] wrote: Is that like.. OctaPussy? I didn't read their stuff. Are

Re: Execute binary code

On 10 Jan 2007 08:12:41 -0800, sturlamolden [EMAIL PROTECTED] wrote: Chris Mellon wrote: This works fine if the binary data is pure asm, but the impresssion the OP gave is that it's a compiled binary, which you can't just jump into this way. You may have to offset the function pointer

Re: An iterator with look-ahead

Neil Cerutti wrote: For use in a hand-coded parser I wrote the following simple iterator with look-ahead. I haven't thought too deeply about what peek ought to return when the iterator is exhausted. Suggestions are respectfully requested. As it is, you can't be sure what a peek() = None

Re: An iterator with look-ahead

Neil Cerutti wrote: For use in a hand-coded parser I wrote the following simple iterator with look-ahead. There's a recipe for this: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/304373 Note that the recipe efficiently supports an arbitrary look-ahead, not just a single item.

Re: Parallel Python

robert wrote: Thats true. IPC through sockets or (somewhat faster) shared memory - cPickle at least - is usually the maximum of such approaches. See http://groups.google.de/group/comp.lang.python/browse_frm/thread/f822ec289f30b26a For tasks really requiring threading one can consider

Re: Parallel Python

[EMAIL PROTECTED] wrote: That's right. ppsmp starts multiple interpreters in separate processes and organize communication between them through IPC. Thus you are basically reinventing MPI. http://mpi4py.scipy.org/ http://en.wikipedia.org/wiki/Message_Passing_Interface --

Universal Feed Parser - How do I keep attributes?

I'm trying to use FeedParser to parse out Yahoo's Weather Data. I need to capture some attribute values, but it looks like FeedParser strips them out. Is there any way to keep them? XML Snippet: ... yweather:location city=Sunnyvale region=CA country=US / ... When I try to get the value, it's

Re: Parallel Python

In article [EMAIL PROTECTED], sturlamolden [EMAIL PROTECTED] writes: | | MPI is becoming the de facto standard for high-performance parallel | computing, both on shared memory systems (SMPs) and clusters. It has been for some time, and is still gaining ground. | Spawning | threads or processes

Re: Question about compiling.

Steven W. Orr wrote: I *just* read the tutorial so please be gentle. I created a file called fib.py which works very nicely thank you. When I run it it does what it's supposed to do but I do not get a resulting .pyc file. .pyc files are created only if you import a .py file. Regards,

Re: An iterator with look-ahead

On 2007-01-10, Steven Bethard [EMAIL PROTECTED] wrote: Neil Cerutti wrote: For use in a hand-coded parser I wrote the following simple iterator with look-ahead. There's a recipe for this: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/304373 Note that the recipe efficiently

Re: Parallel Python

Nick Maclaren wrote: as the ones that you have to play for threaded programs. Yes, I know that it is a bit Irish for the best way to use a shared memory system to be to not share memory, but that's how it is. Thank you for clearing that up. In any case, this means that Python can happily

Re: Building Python 2.5.0 on AIX 5.3 - Undefined symbol: .__floor

It looks like I just need to upgrade my compiler version. See http://www-128.ibm.com/developerworks/forums/dw_thread.jsp?message=13876484cat=72thread=124105treeDisplayType=threadmode1forum=905#13876484 for more information. Justin Johnson wrote: Hello, I'm trying to build Python 2.5.0 on AIX

Re: Announcement -- ZestyParser

Adam Atlas [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] | This has been on Cheese Shop for a few weeks now, being updated now and | then, but I never really announced it. I just now put up a real web | page for it, so I thought I'd take the opportunity to mention it here. | |

Seattle Python Interest Group Thursday at 7:00 PM

7pm at the bar below Third Place books in Ravenna: http://www.seapig.org/ThirdPlaceMeetingLocation -- http://mail.python.org/mailman/listinfo/python-list

Re: Parallel Python

[EMAIL PROTECTED] (Nick Maclaren) writes: Yes, I know that it is a bit Irish for the best way to use a shared memory system to be to not share memory, but that's how it is. But I thought serious MPI implementations use shared memory if they can. That's the beauty of it, you can run your

Re: Is there a way to protect a piece of critical code?

Hendrik van Rooyen wrote: Hi, I would like to do the following as one atomic operation: 1) Append an item to a list 2) Set a Boolean indicator It would be almost like getting and holding the GIL, to prevent a thread swap out between the two operations. - sort of the inverted function

Re: Parallel Python

In article [EMAIL PROTECTED], sturlamolden [EMAIL PROTECTED] writes: | | In any case, this means that Python can happily keep its GIL, as the | CPU bound 'HPC' tasks for which the GIL does matter should be done | using multiple processes (not threads) anyway. That leaves threads as a | tool for

Re: Parallel Python

In article [EMAIL PROTECTED], Paul Rubin http://[EMAIL PROTECTED] writes: | | Yes, I know that it is a bit Irish for the best way to use a shared | memory system to be to not share memory, but that's how it is. | | But I thought serious MPI implementations use shared memory if they | can.

Re: Parallel Python

[EMAIL PROTECTED] (Nick Maclaren) writes: In article [EMAIL PROTECTED], sturlamolden [EMAIL PROTECTED] writes: [...] | I wonder if too much emphasis is put on thread programming these days. | Threads may be nice for programming web servers and the like, but not | for numerical computing.

Re: Parallel Python

In article [EMAIL PROTECTED], Sergei Organov [EMAIL PROTECTED] writes: | | Do you mean that POSIX threads are inherently designed and implemented | to stay idle most of the time?! If so, I'm afraid those guys that | designed POSIX threads won't agree with you. In particular, as far as I |

Re: Newbie - converting csv files to arrays in NumPy - Matlab vs. Numpy comparison

Thanks for your help. I compared the following code in NumPy with the csvread in Matlab for a very large csv file. Matlab read the file in 577 seconds. On the other hand, this code below kept running for over 2 hours. Can this program be made more efficient? FYI - The csv file was a simple 6

Re: dynamic library loading, missing symbols

So, I did some searching and using python -v to run my code, I was able to see that my module was loaded by the python interpreter using dlopen(lib, 2). 2 is the RTLD_NOW flag, meaning that RTLD_LOCAL is assumed by the system. I suppose this means that any subsequent libraries dlopened will not

Re: Announcement -- ZestyParser

Terry Reedy wrote: I would like to look at the examples online (along with the doc file) before downloading this and setuptools and installing, so I can see what it actually looks like in use. Yes, I second that. I poked around for a little while but could not find a single example. Then I

Re: Read CSV file into an array

oyekomova wrote: I would like to know how to read a CSV file with a header ( n columns of float data) into an array without the header row. import csv l = [] for line in csv.reader(open(my.csv).readlines()[1:]): l.append(line) Which really gets you a list of lists. -- Posted via a

Re: Newbie - converting csv files to arrays in NumPy - Matlab vs. Numpy comparison

oyekomova wrote: Thanks for your help. I compared the following code in NumPy with the csvread in Matlab for a very large csv file. Matlab read the file in 577 seconds. On the other hand, this code below kept running for over 2 hours. Can this program be made more efficient? FYI - The csv

Re: Question about compiling.

Gabriel Genellina [EMAIL PROTECTED] writes: At Tuesday 9/1/2007 14:56, Steven W. Orr wrote: I *just* read the tutorial so please be gentle. I created a file called fib.py which works very nicely thank you. When I run it it does what it's supposed to do but I do not get a resulting .pyc file.

Re: Parallel Python

Just as something to note, but many HPC applications will use a combination of both MPI and threading (OpenMP usually, as for the underlying thread implementation i don't have much to say). Its interesting to see on this message board this huge anti-threading mindset, but the HPC community

Re: Parallel Python

In article [EMAIL PROTECTED], Carl J. Van Arsdall [EMAIL PROTECTED] writes: | | Just as something to note, but many HPC applications will use a | combination of both MPI and threading (OpenMP usually, as for the | underlying thread implementation i don't have much to say). Its | interesting

Re: Question about compiling.

That's not the whole truth. :) The whole truth is that from a developer's POV, .pyc files are unimportant. -- http://mail.python.org/mailman/listinfo/python-list

Re: (newbie) Is there a way to prevent name redundancy in OOP ?

Martin Miller wrote: Carl Banks wrote: Because the usage deceptively suggests that it defines a name in the local namespace. Failing may be too strong a word, but I've come to expect a consistent behavior w.r.t. namespaces, which this violates, so I think it qualifies as a failure. I

Re: Internet Survey

In article [EMAIL PROTECTED], [EMAIL PROTECTED] says... In article [EMAIL PROTECTED], Lefty Bigfoot [EMAIL PROTECTED] wrote: On Wed, 10 Jan 2007 08:28:33 -0600, [EMAIL PROTECTED] wrote (in article [EMAIL PROTECTED]): In article [EMAIL PROTECTED], Elan Magavi [EMAIL PROTECTED]

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