FlightFeather Social Networking Platform, Release 0.2.7
FlightFeather's goal is social networking for everyone. This means that *anyone* should have a chance to run a *popular* social networking site -- on minimal hardware, and without wasting bandwidth. Release 0.2.7 adds a complete working example site to the distributions, along with directions on how to set it up. You can download this release (free/open source under the GPL) from the BoSStats site, which runs on FlightFeather. http://www.bosstats.com/flightfeather.html You are always welcome to participate in the discussion on the BoSStats site; the topic covered (what makes a good boss, office politics, etc.) is valuable in and of itself. Please, however, refrain from posting test comments, as the site is live. A Brief Overview of FlightFeather and BoSStats -- FlightFeather is in its early stages, but it is functional. You can see the system in action on the BoSStats site. BoSStats is dedicated to improving the world of work: you can discuss what makes a good boss, or share your experiences of office politics. You can also comment and vote on the posts made by others. The application does not set cookies, and no registration is required for anything except voting. http://www.bosstats.com/ BoSStats is a good testbed for FlightFeather, and has value of its own, since meaningful advice about work-related problems is very hard to find. A Wisdom of Crowds solution -- particularly with strong privacy protection (see below) -- is a necessary addition to this field. FlightFeather's most important feature is that all write requests generate (or modify) HTML files. In consequence, a pure read (the most common operation) merely serves static pages. The major design focus for FlightFeather are responsiveness and performance; the system should eventually support very high traffic volumes. In addition, FlightFeather allows for a great deal of user privacy -- a critical, rapidly emerging problem in the social networking realm. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Live API search for Python
We've just implemented a live search feature for the Python API at: http://www.yottamusic.com/apisearch/python/ Check it out and let us know what you think! Best regards, Luke Matkins -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Construct 2.00 released
Construct, the Parsing Made Fun library, is proud to release it's second revision! More info and download at: http://construct.wikispaces.com/ Construct is a python library for parsing and building of data structures (binary or textual). It is based on the concept of defining data structures in a declarative manner, rather than procedural code: more complex constructs are composed of a hierarchy of simpler ones. * For an elaborate example, see http://construct.wikispaces.com/examples * For more information, see the tutorial at http://construct.wikispaces.com/tutorial Have a fun parsing day, -Tomer -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Pythomnic 3.0 - platform for building reliable network services (includes video step-by-step tutorial)
New in version 3.0: * Support for POP3, SMTP for processing e-mail messages. * Support for SMPP (full SMPP 3.4 implementation) for processing SMS. * Support for ICQ for processing ICQ messages. * SSL-protected RPC channel. * Request execution context spanning across multiple servers (a-la COM+ causality). All threads participating in any given request processing share the same context. + More documentation including video step-by-step tutorial. Improved in version 3.0: * Slightly improved support for JMS. * Greatly simplified API to distributed transactions. * Improved startup/shutdown process. * More or less serious bugfixes. http://www.pythomnic.org/ -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Mini-tutorials on the Zope component architecture and on zc.buildout at PyCon
At PyCon: http://us.pycon.org/TX2007/HomePage I'll be giving a tutorial that combines two separate mini-tutorials: http://us.pycon.org/TX2007/TutorialsAM#AM7 The first mini-tutorial is on the Zope Component Architecture. The Zope Component Architecture, which isn't tied to the Zope Web application server, provides mechanisms for assembling, extending, and integrating applications using loosely-coupled parts. The tutorial will explain why one would want to use a component system, including when to and when *not* to use components. It will provide a high-level introduction to the main features of the Zope component architecture, comparing it to other Python solutions to the same kinds of problems the Component Architecture addresses. The second mini-tutorial provides an introduction to zc.buildout. zc.buildout is a system for automating the assembly and deployment of applications having many parts. It also provides a mechanism for installing and assembling Python eggs in ways that are especially helpful during development and when creating larger applications. The tutorial will explain and show examples of using zc.buildout to - Create a sandbox for experimenting with packages without installing them into a system Python. - Create development environments for working on packages. - Create system with multiple applications. To get the most from zc.buildout requires some knowledge of using and creating eggs. The mini tutorial will provide a lazy programmer's introduction to using and creating eggs. To find out more see: http://us.pycon.org/TX2007/TutorialsAM#AM7 Hurry! PyCon early-bird registration ends soon. :) Jim -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: ANN: Advanced Python training course, Nov 8-10, San Francisco
FINAL REMINDER... we still have some seats left! What: (Intensive) Intro to Python When: February 7-9, 2007 Where: San Francisco (SFO/San Bruno), CA, USA Web:http://cyberwebconsulting.com (click Python Training link) Need to get up-to-speed with Python as quickly as possible? Come join us in beautiful Northern California for another one of our rigorous Python training events! This is an intense introduction to Python directed towards those who have some proficiency in another high-level language. This course will take place in San Bruno right near the San Francisco International Airport. LOCALS: easy freeway (101/280/380) with lots of parking plus public transit (BART and CalTrain) access via the San Bruno stations, easily accessible from all parts of the Bay Area VISITORS: free shuttle to/from the airport, free high-speed internet, free breakfast and evening reception daily The cost is only $1095 (reg $1295) per attendee. Discounts are available for multiple registrations as well as teachers/students. Registration will be opening soon for the next Intro and Advanced courses both taking place back-to-back in May 2007. See website for more details. hope to meet you soon! -- wesley - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Core Python Programming, Prentice Hall, (c)2007,2001 http://corepython.com wesley.j.chun :: wescpy-at-gmail.com python training and technical consulting cyberweb.consulting : silicon valley, ca http://cyberwebconsulting.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
PyCon: MS Office tutorial replaced by Internet Programming
The Programming Microsoft Office using Python tutorial has been cancelled and replaced by Internet Programming with Python; see the tutorial outline for more details: http://us.pycon.org/TX2007/TutorialsPM7outline If you've registered for a different afternoon tutorial (or for no afternoon tutorial at all) and want to switch to the new Internet Programming tutorial, write to the conference address (pycon at python.org). We apologize for any inconvenience. Andrew M. Kuchling [EMAIL PROTECTED] Co-chair, PyCon 2007 http://us.pycon.org -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Python 2.5 install on Gentoo Linux: failed dmb and _tkinter
Sorin Schwimmer schrieb: Did you add /usr/local/lib to /etc/ld.so.conf? It's there It is it also listed with ldconfig -p? Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Python nuube needs Unicode help
[EMAIL PROTECTED] wrote: HELP! Guy who was here before me wrote a script to parse files in Python. Includes line: print u According to your other posts 'u' seems to be an instance of a custom Utterance class with a __str__() method that accidentally returns unicode. Try changing the print statement to print unicode(u) If you're lucky, it works. Otherwise we need a piece of the actual code. To give you an idea what a self-contained demonstration of your problem might look like: class Utterance(object): ... def __str__(self): return uäöü ... u = Utterance() print u Traceback (most recent call last): File stdin, line 1, in module UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2: ordinal not in range(128) print unicode(u) äöü Peter -- http://mail.python.org/mailman/listinfo/python-list
RE: Learning Python book, new edition?
John wrote: So what happens with google bots etc... Information provided in the email could be helpful to others that are NOT the original recipient. And what happens to the archive stuff? I will forward your response to our crack legal department. Perhaps they can help you with your very astute questions. -Jeff This email is intended only for the individual or entity to which it is addressed. This email may contain information that is privileged, confidential or otherwise protected from disclosure. Dissemination, distribution or copying of this e-mail or any attachments by anyone other than the intended recipient, or an employee or agent responsible for delivering the message to the intended recipient, is prohibited. If you are not the intended recipient of this message or the employee or agent responsible for delivery of this email to the intended recipient, please notify the sender by replying to this message and then delete it from your system. Any use, dissemination, distribution, or reproduction of this message by unintended recipients is strictly prohibited and may be unlawful. -- http://mail.python.org/mailman/listinfo/python-list
Re: maximum number of threads
William Heymann [EMAIL PROTECTED] wrote: So you know I tried this on ubuntu edgy 64bit edition on a dual 2218 opteron system with 8G of ram and I got lots of output Exception raised: can't start new thread Biggest number of threads: 32274 This almost looks as if the number of threads is a sixteen bit signed int... - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: What happened to SPE?
Hi, Thanks for the feedback. Paulo -- http://mail.python.org/mailman/listinfo/python-list
pygame and python 2.5
Hi all, when I rtry to install pygame (pygame-1.7.1release.win32-py2.4.exe, the most ciurrent version I found) it requires Python 2.4! Will I really have to uninstall my Python 2.5 and install the old Python 2.4 in order to use pygame? Thanks, Siggi -- http://mail.python.org/mailman/listinfo/python-list
Re: Maths error
In article [EMAIL PROTECTED], Hendrik van Rooyen [EMAIL PROTECTED] writes: | | I would have thought that this sort of thing was a natural consequence | of rounding errors - if I round (or worse truncate) a binary, I can be off | by at most one, with an expectation of a half of a least significant digit, | while if I use hex digits, my expectation is around eight, and for decimal | around five... | | So it would seem natural that errors would propagate | faster on big base systems, AOTBE, but this may be | a naive view.. Yes, indeed, and that is precisely why the we must use binary camp won out. The problem was that computers of the early 1970s were not quite powerful enough to run real applications with simulated floating-point arithmetic. I am one of the half-dozen people who did ANY actual tests on real numerical code, but there may have been some work since! Nowadays, it would be easy, and it would make quite a good PhD. The points to look at would be the base and the rounding rules (including IEEE rounding versus probabilistic versus last bit forced[*]). We know that the use or not of denormalised numbers and the exact details of true rounding make essentially no difference. In a world ruled by reason rather than spin, this investigation would have been done before claiming that decimal floating-point is an adequate replacement for binary for numerical work, but we don't live in such a world. No matter. Almost everyone in the area agrees that decimal floating-point isn't MUCH worse than binary, from a numerical point of view :-) [*] Assuming signed magnitude, calculate the answer truncated towards zero but keep track of whether it is exact. If not, force the last bit to 1. An old, cheap approximation to rounding. Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
How to run external program?
How can I run external program from Python? I use Python with XP Thank you for help LB -- http://mail.python.org/mailman/listinfo/python-list
Re: How to run external program?
Lad wrote: How can I run external program from Python? I use Python with XP Thank you for help LB The subprocess module is what you want for this. It's got ways of running external executables as separate subprocesses, and interacting with the subprocess and both its input and output. Gary Herron -- http://mail.python.org/mailman/listinfo/python-list
Re: pygame and python 2.5
siggi wrote: when I rtry to install pygame (pygame-1.7.1release.win32-py2.4.exe, the most ciurrent version I found) it requires Python 2.4! Will I really have to uninstall my Python 2.5 and install the old Python 2.4 in order to use pygame? For now, yes. This is a long-standing problem with Python really, requiring extensions to always be recompiled for newer versions. I usually have to wait about 6 months to a year after any new release before I can actually install it, due to the extension lag. -- Ben Sizer -- http://mail.python.org/mailman/listinfo/python-list
Re: How to modify object attribute by python C API
Huayang Xia wrote: PyObject* py_obj_attr1 = PyObject_GetAttrString(obj, attr1); PyObject_SetAttrString(py_obj_attr1, attr2, PyString_FromString(a)); Py_DECREF(py_obj_attr1); The object py_obj_attr1 is said to be a New reference. It's confusing, does it refer to the same object as obj.attr1 in python's term? Yes, it refers to the same object. Each object can have many references, and is deleted when all the references are gone. The new reference in this case means that Python has taken note that there's a new use of that object - your C code. It means it won't delete that object, even if no more Python code refers to it, because it knows your C code holds a reference to it. Therefore, when your C code no longer needs to access the object, you call Py_DECREF. -- Ben Sizer -- http://mail.python.org/mailman/listinfo/python-list
Re: pygame and python 2.5
siggi a écrit : Hi all, when I rtry to install pygame (pygame-1.7.1release.win32-py2.4.exe, the most ciurrent version I found) it requires Python 2.4! Will I really have to uninstall my Python 2.5 and install the old Python 2.4 in order to use pygame? Note: You can have both versions installed, just be sure to use the right one when using pygame (until there is a 2.5 compatible version). -- http://mail.python.org/mailman/listinfo/python-list
Re: How to run external program?
Gary Herron wrote: Lad wrote: How can I run external program from Python? I use Python with XP Thank you for help LB The subprocess module is what you want for this. It's got ways of running external executables as separate subprocesses, and interacting with the subprocess and both its input and output. Gary , Thank you for your reply. I use os.popen3 but it does not work properly for me all the time. Here is a part of my Python program I use an external program ( here mpeg.exe) for converting sourcefile into targetfile ###... ... ... mpeg = mpeg.exe -i %s codec mp3 -s 320x240 %s % (sourcefile, targetfile) stdin, stdout, stderr = os.popen3(mpeg) mpegresult = stdout.read() mpegerrors = stderr.read() stdin.close(); stdout.close(); stderr.close() print ffmpegerrors print ffmpegresult # It works if the sourcefile is small but if it is large( 30MB) it does NOT work.It hangs or the file is not converted in full. Any advice how I should change the program? Thank you. L. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a good example on instantiating, calling, using, an API from Python on Windows?
kj7ny wrote: To be more exact, I am trying to use Python to talk to a Livelink system (http://www.opentext.com/) through their LAPI interface (.dll's, I think). I'll see if I can generate a more intelligent answer to your question, but for now, I'm far enough in the dark that this is as good as I can get. API is a vague term referring to the interface to an application, which could take one of many forms. The form it takes dictates the method you need to use here. If indeed it is via DLLs, then the ctypes module may help. Otherwise, you need to find out precisely what form the API takes. -- Ben Sizer -- http://mail.python.org/mailman/listinfo/python-list
Re: maximum number of threads
Felipe Almeida Lessa [EMAIL PROTECTED] writes: to modify the maximum number of user process (AFAIK each thread use a process entry on Linux) I don't think it's only this. It isn't that at all. The default Linux POSIX threads stack size is 8MB. Linux user space is 3GB (Kernel is mapped at upper 1GB). 382 * 8 = 3056MB. Basically, you're running out of address space. I don't know if you have any control at python level. In C you can call pthread_attr_setstacksize(). Ganesan -- Ganesan Rajagopal -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
[EMAIL PROTECTED] wrote:
The main difference between MPI python solutions and ppsmp is that with
MPI you have to organize both computations
{MPI_Comm_rank(MPI_COMM_WORLD, id); if id==1 then ... else } and
data distribution (MPI_Send / MPI_Recv) by yourself. While with ppsmp
you just submit a function with arguments to the execution server and
retrieve the results later.
Couldn't you just provide similar conveniences on top of MPI? Searching
for Python MPI yields a lot of existing work (as does Python PVM),
so perhaps someone has already done so. Also, what about various grid
toolkits?
[...]
Overall ppsmp is still work in progress and there are other interesting
features which I would like to implement. This is the main reason why I
do not open the source of ppsmp - to have better control of its future
development, as advised here: http://en.wikipedia.org/wiki/Freeware :-)
Despite various probable reactions from people who will claim that
they're comfortable with binary-only products from a single vendor, I
think more people would be inclined to look at your software if you did
distribute the source code, even if they then disregarded what you've
done. My own experience with regard to releasing software is that even
with an open source licence, most people are likely to ignore your
projects than to suddenly jump on board and take control, and even if
your project somehow struck a chord and attracted a lot of interested
developers, would it really be such a bad thing? Many developers have
different experiences and insights which can only make your project
better, anyway.
Related to your work, I've released a parallel execution solution
called parallel/pprocess [1] under the LGPL and haven't really heard
about anyone really doing anything with it, let alone forking it and
showing my original efforts in a bad light. Perhaps most of the
downloaders believe me to be barking up the wrong tree (or just
barking) with the approach I've taken, but I think the best thing is to
abandon any fears of not doing things the best possible way and just be
open to improvements and suggestions.
Paul
[1] http://www.python.org/pypi/parallel
--
http://mail.python.org/mailman/listinfo/python-list
Re: Integer solutions to linear equation?
http://mathworld.wolfram.com/DiophantineEquation.html You can use this web application for solving diophantine equations: http://www.math.uwaterloo.ca/~snburris/htdocs/linear.html Hugo Scolnik Imagination is more important than knowledge.-- http://mail.python.org/mailman/listinfo/python-list
Integer solutions to linear equation?
The answer to your integer solutions problem can be found in http://www.alpertron.com.ar/QUAD.HTM Best Hugo Scolnik Imagination is more important than knowledge.-- http://mail.python.org/mailman/listinfo/python-list
Re: Read from database, write to another database, simultaneously
Dennis Lee Bieber wrote: The problem though, is that the original poster claimed the Oracle data was being emitted in multiple chunks, not as a single output -- and they want to avoid collecting the data in a temporary file... I think he wanted to know whether concurrent reads from Oracle and writes to PostgreSQL would be faster or more efficient. I'd argue that the temporary file approach is likely to be faster and more efficient (disk space usage for temporary files disregarded). Sure, if you can have two concurrent processes with minimal contention, one reading from Oracle, one writing to PostgreSQL, where the PostgreSQL one never lags behind and thus completes shortly after the Oracle data has been completely downloaded, then that might be the ideal solution, but I'm inclined to believe that unless the stream of data from Oracle were arriving really slowly, it wouldn't work out that way. Anyway, that's what my experiences with PostgreSQL suggest so far. Further commentary on the topic is, as noted, available in the manual. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Learning Python book, new edition?
On Thu, 11 Jan 2007 16:42:34 -0600, Demel, Jeff [EMAIL PROTECTED] wrote: John wrote: So what happens with google bots etc... Information provided in the email could be helpful to others that are NOT the original recipient. And what happens to the archive stuff? I will forward your response to our crack legal department. Perhaps they can help you with your very astute questions. -Jeff This email is intended only for the individual or entity to which it is addressed. Hi, Don't take this the wrong way, but this isn't an email, it's a usenet posting. I'm also not the individual or entity to which it is addressed because I read it from a news server and it was addressed to comp.lang.python. This email may contain information that is privileged, confidential or otherwise protected from disclosure. Then you would do well to not publish it in a public forum. Dissemination, distribution or copying of this e-mail or any attachments by anyone other than the intended recipient, or an employee or agent responsible for delivering the message to the intended recipient, is prohibited. So if this /were/ actually an email you've just given permission for an admin of any mail server the email passes through to disseminate or copy it. For those not aware: Disseminate: Verb: disseminate - cause to become widely known; spread information; circulate a rumor; broadcast the news If you are not the intended recipient of this message or the employee or agent responsible for delivery of this email to the intended recipient, please notify the sender by replying to this message and then delete it from your system. Any use, dissemination, distribution, or reproduction of this message by unintended recipients is strictly prohibited and may be unlawful. Unlawful how? You've already given permission for an agent responsible for delivering the message to broadcast it around the world. Sorry for the rant, but I'm an email admin and I've just been told about the change to UK law. I'm giving our legal department even more grief. Steven -- .''`. : :' : `. `'` `- -- http://mail.python.org/mailman/listinfo/python-list
Re: How to run external program?
Lad wrote: How can I run external program from Python? I use Python with XP Thank you for help A possible way to do this is the following: Let's say we want to run a program called program.exe from the path C/Program/Program.exe. We would first need to import the os module and type the following: import os#import the os module path = 'C:/Program/Program.exe' #give the pathname of the external program as a string os.system(path) #execute the program from python using the os module There are many other ways, but this should work for short pathnames without spaces. -- http://mail.python.org/mailman/listinfo/python-list
Re: Learning Python book, new edition?
Steven Wayne [EMAIL PROTECTED] wrote: Don't take this the wrong way, but this isn't an email, it's a usenet posting. It is now, but it started as an email. If you examine its headers he sent it to the list but the list administrator had set up software up to copy the email to a newsgroup. Fortunately, as you said, the email gave him permission to do that otherwise the entire legal profession might have collapsed under its own weight. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a way to protect a piece of critical code?
Hendrik van Rooyen wrote: robert [EMAIL PROTECTED] wrote: pushing data objects through an inter-thread queue is a major source for trouble - as this thread shows again. Everybody builds up a new protocol and worries about Empty/Full, Exception-handling/passing, None-Elements, ... I've noticed that those troubles disappear when a functional queue is used - which is very easy with a functional language like Python. For example with http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/491281 One would just use a cq=CallQueue() On the producer side one would just write the functional code one wants to execute in a target thread: cq.call( what_i_want_do_func ) The consumer/receiver thread would just do (periodically) a non-blocking cq.receive() = Without any object fumbling, protocol worries and very fast. And note: This way - working with functional jobs - one can also protect a piece of critical code most naturally and specifically for certain threads without spreading locks throughout the code. Even things which are commonly claimed forbidden (even when using lots of locks) can be magically done in perfect order and effectively this way. Think of worker threads doing things in the GUI or in master / database owner threads etc. Similarly discrete background thread jobs can be used in a functional style this way: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/491280 ( an alternative for the laborious OO-centric threading.Thread which mostly is a lazy copy from Java ) or for higher job frequencies by using default consumer threads as also shown in the 1st example of http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/491281 Thank you - had a (very) quick look and I will return to it later - It is not immediately obvious to my assembler programmer's mentality - looks like in the one case the thread starts up, does its job and then dies, and in the other its a sort of remote daemon like engine, that you can tell what to do, from here... Both concepts seem nice and I will try to wrap my head around them properly. So far I have only used dicts to pass functions around in a relatively unimaginative static jump table like way... Probably one has just to see that one can a pass a function object (or any callable) around as any other object. Similar to a function address in assembler/C but very comfortable and with the comfort of closures (which automatically hold the status of local variables): def f(): print hello def g(func): print I'll do it ... func() print done. def run(x): g(f) a=local variable\n def h(): b=inner local print inner function print x,a,b g(h) g(lambda:sys.stdout.write(a)) run(1) From there its just natural to not pass dead objects through an inter-thread queue, but just code as it or even a piece of critical code ... A small step in thought, but a big step in effect - soon eliminating bunches of worries about queues, pop-races/None objects, protocol, serialization, critical sections, thousands of locks etc. Robert -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
In article [EMAIL PROTECTED],
Paul Boddie [EMAIL PROTECTED] writes:
| [EMAIL PROTECTED] wrote:
|
| The main difference between MPI python solutions and ppsmp is that with
| MPI you have to organize both computations
| {MPI_Comm_rank(MPI_COMM_WORLD, id); if id==1 then ... else } and
| data distribution (MPI_Send / MPI_Recv) by yourself. While with ppsmp
| you just submit a function with arguments to the execution server and
| retrieve the results later.
|
| Couldn't you just provide similar conveniences on top of MPI? Searching
| for Python MPI yields a lot of existing work (as does Python PVM),
| so perhaps someone has already done so.
Yes. No problem.
| Also, what about various grid toolkits?
If you can find one that is robust enough for real work by someone who
is not deeply into developing Grid software, I will be amazed.
Regards,
Nick Maclaren.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Learning Python book, new edition?
On Fri, 12 Jan 2007 04:50:21 -0600, Steven Wayne wrote: [snip stupid disclaimer and response to it] Unlawful how? You've already given permission for an agent responsible for delivering the message to broadcast it around the world. Sorry for the rant, but I'm an email admin and I've just been told about the change to UK law. What change to UK law? I'm giving our legal department even more grief. For those interested in an amateur analysis of email disclaimers: http://goldmark.org/jeff/stupid-disclaimers/ If you get a Forbidden error, try going to the top level of the site first http://goldmark.org/ and navigating down by following links. Try not to laugh at all the an error occurred while processing this directive messages. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
Paul Boddie wrote:
[EMAIL PROTECTED] wrote:
The main difference between MPI python solutions and ppsmp is that with
MPI you have to organize both computations
{MPI_Comm_rank(MPI_COMM_WORLD, id); if id==1 then ... else } and
data distribution (MPI_Send / MPI_Recv) by yourself. While with ppsmp
you just submit a function with arguments to the execution server and
retrieve the results later.
Couldn't you just provide similar conveniences on top of MPI? Searching
for Python MPI yields a lot of existing work (as does Python PVM),
so perhaps someone has already done so. Also, what about various grid
toolkits?
[...]
Overall ppsmp is still work in progress and there are other interesting
features which I would like to implement. This is the main reason why I
do not open the source of ppsmp - to have better control of its future
development, as advised here: http://en.wikipedia.org/wiki/Freeware :-)
Despite various probable reactions from people who will claim that
they're comfortable with binary-only products from a single vendor, I
think more people would be inclined to look at your software if you did
distribute the source code, even if they then disregarded what you've
done. My own experience with regard to releasing software is that even
with an open source licence, most people are likely to ignore your
projects than to suddenly jump on board and take control, and even if
your project somehow struck a chord and attracted a lot of interested
developers, would it really be such a bad thing? Many developers have
different experiences and insights which can only make your project
better, anyway.
Related to your work, I've released a parallel execution solution
called parallel/pprocess [1] under the LGPL and haven't really heard
about anyone really doing anything with it, let alone forking it and
showing my original efforts in a bad light. Perhaps most of the
downloaders believe me to be barking up the wrong tree (or just
barking) with the approach I've taken, but I think the best thing is to
abandon any fears of not doing things the best possible way and just be
open to improvements and suggestions.
Paul
[1] http://www.python.org/pypi/parallel
I'd be interested in an overview.
For ease of use a major criterion for me would be a pure python
solution, which also does the job of starting and controlling the
other process(es) automatically right (by default) on common
platforms.
Which of the existing (RPC) solutions are that nice?
Robert
--
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Re: Learning Python book, new edition?
On 12 Jan 2007 11:06:29 GMT, Duncan Booth [EMAIL PROTECTED] wrote: Steven Wayne [EMAIL PROTECTED] wrote: Don't take this the wrong way, but this isn't an email, it's a usenet posting. It is now, but it started as an email. If you examine its headers he sent it to the list but the list administrator had set up software up to copy the email to a newsgroup. There's a list? Fortunately, as you said, the email gave him permission to do that otherwise the entire legal profession might have collapsed under its own weight. :-) Not seeing a down side to that. But it brings up and interesting point. Is automatic email to newsgroup software now defunct? What if the disclaimer were better written and it forbade such an action? Steven -- .''`. : :' : `. `'` `- -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
[EMAIL PROTECTED] wrote: Has anybody tried to run parallel python applications? It appears that if your application is computation-bound using 'thread' or 'threading' modules will not get you any speedup. That is because python interpreter uses GIL(Global Interpreter Lock) for internal bookkeeping. The later allows only one python byte-code instruction to be executed at a time even if you have a multiprocessor computer. To overcome this limitation, I've created ppsmp module: http://www.parallelpython.com It provides an easy way to run parallel python applications on smp computers. I would appreciate any comments/suggestions regarding it. Thank you! Looks interesting, but is there any way to use this for a cluster of machines over a network (not smp)? -- http://mail.python.org/mailman/listinfo/python-list
Re: Learning Python book, new edition?
On Fri, 12 Jan 2007 22:44:33 +1100, Steven D'Aprano [EMAIL PROTECTED] wrote: On Fri, 12 Jan 2007 04:50:21 -0600, Steven Wayne wrote: [snip stupid disclaimer and response to it] Unlawful how? You've already given permission for an agent responsible for delivering the message to broadcast it around the world. Sorry for the rant, but I'm an email admin and I've just been told about the change to UK law. What change to UK law? http://www.theregister.co.uk/2006/12/21/new_web_email_regulation/ Steven -- .''`. : :' : `. `'` `- -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
robert wrote: Paul Boddie wrote: [1] http://www.python.org/pypi/parallel I'd be interested in an overview. I think we've briefly discussed the above solution before, and I don't think you're too enthusiastic about anything using interprocess communication, which is what the above solution uses. Moreover, it's intended as a threading replacement for SMP/multicore architectures where one actually gets parallel execution (since it uses processes). For ease of use a major criterion for me would be a pure python solution, which also does the job of starting and controlling the other process(es) automatically right (by default) on common platforms. Which of the existing (RPC) solutions are that nice? Many people have nice things to say about Pyro, and there seem to be various modules attempting parallel processing, or at least some kind of job control, using that technology. See Konrad Hinsen's ScientificPython solution for an example of this - I'm sure I've seen others, too. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Tools Designing large/complicated applications
Carl J. Van Arsdall wrote: For those of you that work on larger applications but still code in python... do your development teams use any tools to facilitate the design? (i'm not asking about editors here, i'm really asking about software design tools) Are these the same tools you would use to help engineer software in another language? Is there anyone here who is forced to use a tool to design python software that completely hates it? Why do you hate it? Thanks! -carl -- Carl J. Van Arsdall [EMAIL PROTECTED] Build and Release MontaVista Software Our software architects use Enterprise Architect. Its probably one of the cheaper modeling and UML design applications, but loaded with features. They do all the use cases, analysis and design with it, then give us the necessary flow / activity diagrams and information that we then use to construct our python applications. It does have a python interface (and obviously c, c#, java, php etc etc) allowing python code to be imported for class design etc etc. I've played with a few open source UML based tools, but unfortunately its not one of my strengths, I leave that up to the guys that know it well. -- http://mail.python.org/mailman/listinfo/python-list
Hint :Easy_Install Documentation
Hello list, just in the moment I wanted to write about then lacking documentation about Easy_Install, but then I found this one : http://www-128.ibm.com/developerworks/library/l-cppeak3.html. Just for google. HTH Norbert -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
On Jan 12, 2007, at 11:21, Paul Boddie wrote: done. My own experience with regard to releasing software is that even with an open source licence, most people are likely to ignore your projects than to suddenly jump on board and take control, and even if My experience is exactly the same. And looking into the big world of Open Source programs, the only case I ever heard of in which a project was forked by someone else is the Emacs/XEmacs split. I'd be happy if any of my projects ever reached that level of interest. Related to your work, I've released a parallel execution solution called parallel/pprocess [1] under the LGPL and haven't really heard about anyone really doing anything with it, let alone forking it and That's one more project... It seems that there is significant interest in parallel computing in Python. Perhaps we should start a special interest group? Not so much in order to work on a single project; I believe that at the current state of parallel computing we still need many different approaches to be tried. But an exchange of experience could well be useful for all of us. Konrad. -- - Konrad Hinsen Centre de Biophysique Moléculaire, CNRS Orléans Synchrotron Soleil - Division Expériences Saint Aubin - BP 48 91192 Gif sur Yvette Cedex, France Tel. +33-1 69 35 97 15 E-Mail: [EMAIL PROTECTED] - -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
Konrad Hinsen wrote: That's one more project... It seems that there is significant interest in parallel computing in Python. Perhaps we should start a special interest group? Not so much in order to work on a single project; I believe that at the current state of parallel computing we still need many different approaches to be tried. But an exchange of experience could well be useful for all of us. I think a special interest group might be productive, but I've seen varying levels of special interest in the different mailing lists associated with such groups: the Web-SIG list started with enthusiasm, produced a cascade of messages around WSGI, then dried up; the XML-SIG list seems to be a sorry indication of how Python's XML scene has drifted onto other matters; other such groups have also lost their momentum. It seems to me that a more useful first step would be to create an overview of the different modules and put it on the python.org Wiki: http://wiki.python.org/moin/FrontPage http://wiki.python.org/moin/UsefulModules (a reasonable entry point) If no-one beats me to it, I may write something up over the weekend. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
On Thu, 2007-01-11 at 23:47 +, Nick Maclaren wrote: In article [EMAIL PROTECTED], Facundo Batista [EMAIL PROTECTED] writes: | Noud Aldenhoven wrote: | | When I was programming in a mathematical project I began to wonder if python | supports rational numbers[1]. In a language like magma[2] it's not such a | problem. Does python supports something simular? | | Python does not have rational numbers. | | There's a (rejected) PEP about this, PEP-239: | | http://www.python.org/dev/peps/pep-0239/ | | Maybe you also want to read the section Why not rational? of | PEP-327... | | http://www.python.org/dev/peps/pep-0327/#why-not-rational Oh, God. Decimal delusions again :-( There are good arguments for not having a rational type, but the idea that decimal floating-point is in any way a replacement is cuckoo. You're putting words in Facundo's mouth. Facundo didn't say why we should read that section of PEP 327. I think he merely pointed to the slow performance of rational numbers that's explained in that section. (Facundo is the author of PEP 327, so I find it unlikely that he has delusions about what decimals can and can't do.) It is true that decimal arithmetic is not a replacement for rational arithmetic, but I don't see anybody on this thread or in PEP 327 stating that it is. -Carsten -- http://mail.python.org/mailman/listinfo/python-list
Re: How much slower is dict indexing vs. list indexing?
On Jan 11, 5:53 pm, Steve Holden [EMAIL PROTECTED] wrote:
What technique were you thinking of to look up the cached index values
in Python, just as a matter of curiosity? Storing them in a dict? It
would be hard to think of a faster way ... ;-)
I didn't have anything fancy in mind. I was just wondering whether it
makes sense to replace a block of code like
data = {'a' : 1, 'b' :2, 'c' : 3}
for i in someLargeList:
for name in ['a','b','c']:
result.append(data[name])
with somthing like
data = {'a' : 1, 'b' :2, 'c' : 3}
dataValues = [data[k] for k in ['a','b','c']
for i in someLargeList:
for index in [0,1,2]:
result.append(dataValues[index])
It sounds like it's probably not worth the effort in general, but might
be for extremely ultra-critical parts of code.
Thanks
--
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context managers and co-routines
I'm happily using context managers and co-routines, and would like to use both at the same time, e.g. with foo(): ... x = yield y ... In this code multiple copies of this code can be executing at the same time, interleaved by the yield statement. This doesn't work well, since the context manager is dealing with global state (specifically, re-routing stdout). The problem is that all of my state (local variables, etc.) is nicely saved over the yield, but the context is not. So I end up having to write the code like this: with foo(): ... x = yield y with foo(): ... which is not so pretty. What I'd like is some way to transparently save and restore context over a yield, but I don't see an easy way to do this. Any suggestions? Thanks, Bob Sidebotham -- http://mail.python.org/mailman/listinfo/python-list
Newbie imap lib question
I have three messages in my inbox. Why does messageCount =
gServer.select('INBOX') not just return OK and 3. See below for
examples - seems to be completely random how many threes it returns.
The documentation for imaplib seems sparse. Does anybody have any good
links? Many thanks, Jon
messageCount =
0 : OK
1 : ['3']
messageCount =
0 : OK
1 : ['3', '3', '3']
messageCount =
0 : OK
1 : [None]
messageCount =
0 : OK
1 : ['3', '3']
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Re: How much slower is dict indexing vs. list indexing?
Emin It sounds like it's probably not worth the effort in general, but
Emin might be for extremely ultra-critical parts of code.
Even in extremely ultra-critical parts of code I doubt the loss of
readability would be worth it. If there are situations where you can really
gain by switching from a natural indexing scheme to lists, there are
probably other places in your code where you will gain just as much benefit
without the corresponding loss of readability. Indexing lists only appears
to be about twice as fast as indexing dicts:
% timeit.py -s data = {'a' : 1, 'b' :2, 'c' : 3} for k in 'abc': x =
data[k]
10 loops, best of 3: 4.61 usec per loop
% timeit.py -s data = [1, 2, 3] for k in [0, 1, 2]: x = data[k]
10 loops, best of 3: 2.97 usec per loop
If you're worried about regaining a couple microseconds per index you
probably shouldn't be using Python.
Skip
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Re: Tools Designing large/complicated applications
Carl, Some well known design applications have plugins for UML-Python translation. For example EnterpriseArchitect (http://www.sparxsystems.com.au/resources/mdg_tech/) has a plugin for Python. ObjectDomain though supports it natively: http://www.objectdomain.com/products/od/overview.do The good thing about Python is that it is concise enough to not need UML diagrams. Python can be used as a prototype language itself. In other words it could take longer to draw the UML diagram than it would take to type up a mock-up in Python. While with Java, for example, it is very helpful to have a code generation application to take care of all the getters and setters. But of course if you have non-technical people who just know how to read UML diagrams, it makes sense to invest in a good design tool. Hope this helps, -Nick Carl J. Van Arsdall wrote: For those of you that work on larger applications but still code in python... do your development teams use any tools to facilitate the design? (i'm not asking about editors here, i'm really asking about software design tools) Are these the same tools you would use to help engineer software in another language? Is there anyone here who is forced to use a tool to design python software that completely hates it? Why do you hate it? Thanks! -carl -- Carl J. Van Arsdall [EMAIL PROTECTED] Build and Release MontaVista Software -- http://mail.python.org/mailman/listinfo/python-list
setup.py ./configure arguments
Hi, how do i pass '--enable-shared' etc arguments to Python2.5 setup.py ? do i need to edit some file ? regards, KM -- http://mail.python.org/mailman/listinfo/python-list
Re: How much slower is dict indexing vs. list indexing?
Emin [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
On Jan 11, 5:53 pm, Steve Holden [EMAIL PROTECTED] wrote:
What technique were you thinking of to look up the cached index values
in Python, just as a matter of curiosity? Storing them in a dict? It
would be hard to think of a faster way ... ;-)
I didn't have anything fancy in mind. I was just wondering whether it
makes sense to replace a block of code like
data = {'a' : 1, 'b' :2, 'c' : 3}
for i in someLargeList:
for name in ['a','b','c']:
result.append(data[name])
with somthing like
data = {'a' : 1, 'b' :2, 'c' : 3}
dataValues = [data[k] for k in ['a','b','c']
for i in someLargeList:
for index in [0,1,2]:
result.append(dataValues[index])
[Your as-posted code doesn't run, you are missing a trailing ']' in your
list comprehension. ]
So what you want is this?
1. Get the values from the data dict in order of their key, ['a','b','c']
(which is not the same as getting the data.values() list, which is in
unpredictable order)
2. For every element in some larger list, append each of the elements in
order from step 1 to some other result list.
First of all, realize that:
for index in [0,1,2]:
result.append(dataValues[index])
is the same as
result.extend(dataValues)
assuming that dataValues has exactly 3 elements in it.
Second, why are you iterating over someLargeList? You are doing nothing
with i, and neither the data dict nor the dataValues list changes as you
iterate.
This will do the job more quickly, I should think:
data = {'a' : 1, 'b' :2, 'c' : 3}
dataValues = [data[k] for k in ['a','b','c']]
result.extend( dataValues * len(someLargeList) )
-- Paul
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Re: What about this?
Dr. Who wrote: What's more amazing is that anyone would click on the link at all given the increasing number of website that provide hidden content that tries to deliver spyware or viruses just by getting visitors. Me LinuxBoy, me not in danger... SCNR :) Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Python nuube needs Unicode help
Can you attach files in this forum? Couldn't find the option. Oh well,
here's the file.
#!/usr/bin/python
# Version: 1.1
# Author: Steve Losh
from sets import Set
from optparse import OptionParser
from xml.dom.minidom import parse
AudioPath = 'audio/'
DatafilePath = 'utterances.trmxml'
CONFIDENCE_LOW = None #'500'
CONFIDENCE_HIGH = None #'500'
utterancesFile = None
class Utterance:
def __init__(self, audio, grammarSet, text):
self.audio = audio
self.grammarSet = grammarSet
self.text = text
def __str__(self):
return SWIrecAcousticStateReset\ntranscription + self.text \
+ \nrecognize + AudioPath + self.audio
def getGrammarPaths():
Get the paths of all the grammars needed. Returns a Set
containing the results.
If a grammar is listed more than once in the transcription manifest it
will only appear once in these results.
TODO:
Find a less fragile way to split off the server half of the URIs.
grammarTags = utterancesFile.getElementsByTagName('Grammar')
grammarURIs = [tag.getAttribute('uri') for tag in grammarTags]
grammarPaths = [uri.split('servlet/CA/')[1] for uri in grammarURIs]
return Set(grammarPaths)
def createGrammarNameFromPath(path):
Convert a given path into an appropriate name for the
grammar.
path = path.replace('/', '-') # Strip the directory slashes
path = path.replace('.', '_') # and the dot before the extension.
return path
def loadGrammars():
Output the statements that will load the required grammars.
grammarPaths = list(getGrammarPaths())
grammarsToLoad = {}
for path in grammarPaths:
grammarName = createGrammarNameFromPath(path)
grammarsToLoad[grammarName] = grammars/ + path
for grammarName in grammarsToLoad:
print SWIrecGrammarLoad, grammarName,
grammarsToLoad[grammarName]
def loadGrammarSets():
Output the statements that will define the grammar
sets/contexts. Returns a list of the grammar set names.
grammarSetList =
utterancesFile.getElementsByTagName('GrammarSets')
grammarSets =
grammarSetList[0].getElementsByTagName('GrammarSet')
grammarSetNames = []
for gs in grammarSets:
grammarSetName = gs.getAttribute('id')
print context_define, grammarSetName, CONFIDENCE_LOW,
CONFIDENCE_HIGH
for g in gs.getElementsByTagName('Grammar'):
path = g.getAttribute('uri').split('servlet/CA/')[1]
print context_add, createGrammarNameFromPath(path),
'1000'
print context_end\n
grammarSetNames.append(grammarSetName)
return grammarSetNames
def buildUtterances(call):
This function takes a call tag, builds the utterances belonging
to it and returns a list containing them.
utts = call.getElementsByTagName('Utt')
utterances = [Utterance( utt.getAttribute('audio'), \
utt.getAttribute('grammarSet'),
utt.getAttribute('transcribedText') ) \
for utt in utts]
return utterances
def getUtterances():
Returns a list of all the utterances we want to test.
callList = utterancesFile.getElementsByTagName('Calls')[0]
calls = callList.getElementsByTagName('Call')
utterances = []
for c in calls:
utterances.extend(buildUtterances(c))
return utterances
def loadData(utterances):
Outputs the statements that will tell rec_test what to test.
contexts = {}
for u in utterances:
if u.grammarSet not in contexts:
contexts[u.grammarSet] = []
contexts[u.grammarSet].append(u)
for c in contexts:
print open errors + c + .errors
print open utd + c + .utd
print context_use, c
for u in contexts[c]:
print u
print close utd
print close errors
print \n
def makeParser():
parser = OptionParser( usage: %prog -l LOWER CONFIDENCE -h UPPER
CONFIDENCE [-f FILTER1 -f FILTER2 ...] file )
parser.add_option(-l, --low-confidence, dest=lower, \
help=The lower confidence level to test at.,
metavar=CONFIDENCE)
parser.add_option(-u, --upper-confidence, dest=upper, \
help=The upper confidence level to test at.,
metavar=CONFIDENCE)
parser.add_option(-f, --filter, dest=filter, action=append,
\
help=Only test utterances transcribed as WORD.,
metavar=WORD)
return parser
def main():
global utterancesFile, CONFIDENCE_HIGH, CONFIDENCE_LOW
parser = makeParser()
(options, args) = parser.parse_args()
if len(args) != 1:
parser.error(One data file must be specified.)
elif options.lower == None:
parser.error(A lower confidence level must be specified.)
elif options.upper == None:
parser.error(An upper confidence level must be specified.)
DatafilePath = args[0]
CONFIDENCE_LOW = options.lower
CONFIDENCE_HIGH = options.upper
Re: Python nuube needs Unicode help
[EMAIL PROTECTED] wrote:
Can you attach files in this forum? Couldn't find the option. Oh well,
here's the file.
#!/usr/bin/python
# Version: 1.1
# Author: Steve Losh
from sets import Set
from optparse import OptionParser
from xml.dom.minidom import parse
AudioPath = 'audio/'
DatafilePath = 'utterances.trmxml'
CONFIDENCE_LOW = None #'500'
CONFIDENCE_HIGH = None #'500'
utterancesFile = None
class Utterance:
def __init__(self, audio, grammarSet, text):
self.audio = audio
self.grammarSet = grammarSet
self.text = text
def __str__(self):
return SWIrecAcousticStateReset\ntranscription + self.text \
+ \nrecognize + AudioPath + self.audio
There your __str__-method is. self.text and self.audio come from the
xml-parsing and are unicode objects - so they need to be encoded, like
this:
def __str__(self):
return SWIrecAcousticStateReset\ntranscription +
self.text.encode('utf-8') + \nrecognize + AudioPath +
self.audio.encode('utf-8')
Diez
--
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Command line arguments on Vista
So I write this sript called printargs.py: -- #!/usr/local/bin/python import sys print 'there are %d args' % len(sys.argv) for arg in sys.argv: print 'arg: %s' % arg -- and make it executable. On pretty much every platform I can get my hands on, when I run printargs.py booga -a wooga I get this output: there are 4 args arg: printargs.py arg: booga arg: -a arg: wooga But on Windows Vista, when I run that command, I get there are 1 args arg: printargs.py What's up with that? --JMike -- http://mail.python.org/mailman/listinfo/python-list
Re: context managers and generators
On 12 Jan 2007 06:17:01 -0800, [EMAIL PROTECTED] wrote: I'm happily using context managers and co-routines, and would like to use both at the same time, e.g. Python has generators, not co-routines. with foo(): ... x = yield y ... In this code multiple copies of this code can be executing at the same time, interleaved by the yield statement. This doesn't work well, since the context manager is dealing with global state (specifically, re-routing stdout). The problem is that all of my state (local variables, etc.) is nicely saved over the yield, but the context is not. So I end up having to write the code like this: with foo(): ... x = yield y with foo(): ... which is not so pretty. What I'd like is some way to transparently save and restore context over a yield, but I don't see an easy way to do this. Wrap the generator in a function which co-operates with your context managers to clean-up or re-instate whatever they are interacting with whenever execution leaves or re-enters the generator. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Command line arguments on Vista
By the way, note that if I say (on Vista) python printargs.py booga -a wooga I get the desired output: there are 4 args arg: printargs.py arg: booga arg: -a arg: wooga So the quesiton still stands, what's up with that? Thanks, --JMike -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
In article [EMAIL PROTECTED], Carsten Haese [EMAIL PROTECTED] writes: | On Thu, 2007-01-11 at 23:47 +, Nick Maclaren wrote: | In article [EMAIL PROTECTED], | Facundo Batista [EMAIL PROTECTED] writes: | | Noud Aldenhoven wrote: | | | | When I was programming in a mathematical project I began to wonder if python | | supports rational numbers[1]. In a language like magma[2] it's not such a | | problem. Does python supports something simular? | | | | Python does not have rational numbers. | | | | There's a (rejected) PEP about this, PEP-239: | | | | http://www.python.org/dev/peps/pep-0239/ | | | | Maybe you also want to read the section Why not rational? of | | PEP-327... | | | | http://www.python.org/dev/peps/pep-0327/#why-not-rational | | Oh, God. Decimal delusions again :-( | | There are good arguments for not having a rational type, but the idea | that decimal floating-point is in any way a replacement is cuckoo. | | You're putting words in Facundo's mouth. Facundo didn't say why we | should read that section of PEP 327. I think he merely pointed to the | slow performance of rational numbers that's explained in that section. | (Facundo is the author of PEP 327, so I find it unlikely that he has | delusions about what decimals can and can't do.) You're putting words in MY mouth! I didn't say that he did. But I agree that my words could easily be read that way, so I apologise for any misunderstanding. | It is true that decimal arithmetic is not a replacement for rational | arithmetic, but I don't see anybody on this thread or in PEP 327 stating | that it is. Read them again, more carefully :-( The BDFL Pronouncement rejecting PEP 239 does, even if it does qualify it by saying to some extent. And it was that PEP that I was primarily referring to in that remark. The Why not rational? section of PEP 327 quotes Alex Martelli as saying that Rational are not worth doing without Decimal, which makes no sense at all. All it does is to plug Decimal for a purpose for which it is completely unsuited; not all rational numbers have denumerators that are powers of 10. Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
Re: context managers and generators
Jean-Paul Calderone wrote: On 12 Jan 2007 06:17:01 -0800, [EMAIL PROTECTED] wrote: I'm happily using context managers and co-routines, and would like to use both at the same time, e.g. Python has generators, not co-routines. They may be called generators, but I'm using them as co-routines. Wrap the generator in a function which co-operates with your context managers to clean-up or re-instate whatever they are interacting with whenever execution leaves or re-enters the generator. I don't think wrapping the generator will do it. I think I would have to wrap the actual yield call. Maybe that wouldn't be so bad. There's not even any guarantee, by the way, that the yield even returns: an exception outside the generator will not trigger the exception in the context manager. In general, there is no hook (that I can see) that helps with this. I'm still thinking there is a better way to do it, and would appreciate any ideas. Bob -- http://mail.python.org/mailman/listinfo/python-list
Re: Command line arguments on Vista
Some further information: perl seems to do the same thing (losing arguments). We think it may have something to do with file association. Any ideas anyone? --JMike -- http://mail.python.org/mailman/listinfo/python-list
Re: Command line arguments on Vista
[EMAIL PROTECTED] wrote: But on Windows Vista, when I run that command, I get there are 1 args arg: printargs.py What's up with that? It sounds like the registry entry for running Python files is messed up. Can you go to a command line and see what the command 'ftype Python.File' displays? (Assuming that command lines and ftype still work on Vista) The output should be: Python.File=C:\Python25\python.exe %1 %* but if it only says: Python.File=C:\Python25\python.exe %1 then you would get the behaviour you observed (on any version of Windows, not just Vista). -- http://mail.python.org/mailman/listinfo/python-list
Re: What about this?
What's more amazing is that anyone would click on the link at all given the increasing number of website that provide hidden content that tries to deliver spyware or viruses just by getting visitors. Jeff Bjoern Schliessmann wrote: new wrote: www.magicoz.com amazing Yeah, it *is* really amazing that someone dares to spam for such an unprofessional homepage. Even too stupid to include a doctype ... Björn -- BOFH excuse #61: not approved by the FCC -- http://mail.python.org/mailman/listinfo/python-list
Re: context managers and generators
I'm still thinking there is a better way to do it, and would appreciate any ideas. Everything can be implemented with goto and arrays. http://entrian.com/goto/ :-P -- http://mail.python.org/mailman/listinfo/python-list
Re: Python nuube needs Unicode help
Diez, you are awesome! This works! Thank you so much!!! You are so
awesome!
Diez B. Roggisch wrote:
[EMAIL PROTECTED] wrote:
Can you attach files in this forum? Couldn't find the option. Oh well,
here's the file.
#!/usr/bin/python
# Version: 1.1
# Author: Steve Losh
from sets import Set
from optparse import OptionParser
from xml.dom.minidom import parse
AudioPath = 'audio/'
DatafilePath = 'utterances.trmxml'
CONFIDENCE_LOW = None #'500'
CONFIDENCE_HIGH = None #'500'
utterancesFile = None
class Utterance:
def __init__(self, audio, grammarSet, text):
self.audio = audio
self.grammarSet = grammarSet
self.text = text
def __str__(self):
return SWIrecAcousticStateReset\ntranscription + self.text \
+ \nrecognize + AudioPath + self.audio
There your __str__-method is. self.text and self.audio come from the
xml-parsing and are unicode objects - so they need to be encoded, like
this:
def __str__(self):
return SWIrecAcousticStateReset\ntranscription +
self.text.encode('utf-8') + \nrecognize + AudioPath +
self.audio.encode('utf-8')
Diez
--
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Re: Rational Numbers
On Fri, 2007-01-12 at 15:05 +, Nick Maclaren wrote: In article [EMAIL PROTECTED], Carsten Haese [EMAIL PROTECTED] writes: | On Thu, 2007-01-11 at 23:47 +, Nick Maclaren wrote: | In article [EMAIL PROTECTED], | Facundo Batista [EMAIL PROTECTED] writes: | | Python does not have rational numbers. | | | | There's a (rejected) PEP about this, PEP-239: | | | | http://www.python.org/dev/peps/pep-0239/ | | | | Maybe you also want to read the section Why not rational? of | | PEP-327... | | | | http://www.python.org/dev/peps/pep-0327/#why-not-rational | | Oh, God. Decimal delusions again :-( | | There are good arguments for not having a rational type, but the idea | that decimal floating-point is in any way a replacement is cuckoo. | | You're putting words in Facundo's mouth. Facundo didn't say why we | should read that section of PEP 327. I think he merely pointed to the | slow performance of rational numbers that's explained in that section. | (Facundo is the author of PEP 327, so I find it unlikely that he has | delusions about what decimals can and can't do.) You're putting words in MY mouth! I didn't say that he did. But I agree that my words could easily be read that way, so I apologise for any misunderstanding. [...] The BDFL Pronouncement rejecting PEP 239 does, even if it does qualify it by saying to some extent. And it was that PEP that I was primarily referring to in that remark. Ah, so now you're putting words in the BDFL's mouth. ;) The pronouncement does say The needs outlined in the rationale section have been addressed to some extent by the acceptance of PEP 327 for decimal arithmetic, but it doesn't say to which extent, and it certainly doesn't claim that decimal arithmetic is a replacement for rational arithmetic. The Why not rational? section of PEP 327 quotes Alex Martelli as saying that Rational are not worth doing without Decimal, which makes no sense at all. All it does is to plug Decimal for a purpose for which it is completely unsuited; not all rational numbers have denumerators that are powers of 10. The sentence you're referring to is There are excellent Rational implementations [...]. Probably worth PEPping, not worth doing without Decimal. I agree that this sentence is poorly worded, but I think it means Even if we had Rational, we'd still need Decimal in the sense that Rational is not an adequate replacement for Decimal. The bottom line is that there are use cases for both Rational and Decimal, and neither one can replace the other, but there are more use cases for Decimal than for Rational. -Carsten -- http://mail.python.org/mailman/listinfo/python-list
Re: ValueError from dict - some detail would be helpful
metaperl wrote: File /sw/lib/python2.5/csv.py, line 120, in _dict_to_list raise ValueError, dict contains fields not in fieldnames --- it would be nice if it said what field it was Yeap, nice and useful... but, for example, what'd happen if the fields that are not in fieldnames are 10, or 100? How the message could be? -- . Facundo . Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
In article [EMAIL PROTECTED], Carsten Haese [EMAIL PROTECTED] writes: | | Ah, so now you're putting words in the BDFL's mouth. ;) | | The pronouncement does say The needs outlined in the rationale section | have been addressed to some extent by the acceptance of PEP 327 for | decimal arithmetic, but it doesn't say to which extent, and it | certainly doesn't claim that decimal arithmetic is a replacement for | rational arithmetic. Eh? If the needs are addressed to some extent, then to some extent it is a replacement. | The sentence you're referring to is There are excellent Rational | implementations [...]. Probably worth PEPping, not worth doing without | Decimal. I agree that this sentence is poorly worded, but I think it | means Even if we had Rational, we'd still need Decimal in the sense | that Rational is not an adequate replacement for Decimal. Which would be justifiable, but is not what it said. What it SAID is what I said it said | The bottom line is that there are use cases for both Rational and | Decimal, and neither one can replace the other, So far, so good. With reservations, I agree. | but there are more use | cases for Decimal than for Rational. That is dubious, but let's not start that one again. Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
Re: Matching Directory Names and Grouping Them
On 2007-01-11, J [EMAIL PROTECTED] wrote: Steve- Thanks for the reply. I think what I'm trying to say by similar is pattern matching. Essentially, walking through a directory tree starting at a specified root folder, and returning a list of all folders that matches a pattern, in this case, a folder name containing a four digit number representing year and a subdirectory name containing a two digit number representing a month. The matches are grouped together and written into a text file. I hope this helps. Here's a solution using itertools.groupby, just because this is the first programming problem I've seen that seemed to call for it. Hooray! from itertools import groupby def print_by_date(dirs): r Group a directory list according to date codes. data = [ ... root/Input2/2002/03/, ... root/Input1/2001/01/, ... root/Input3/2005/05/, ... root/Input3/2001/01/, ... root/Input1/2002/03/, ... root/Input3/2005/12/, ... root/Input2/2001/01/, ... root/Input3/2002/03/, ... root/Input2/2005/05/, ... root/Input1/2005/12/] print_by_date(data) root/Input1/2001/01/ root/Input2/2001/01/ root/Input3/2001/01/ BLANKLINE root/Input1/2002/03/ root/Input2/2002/03/ root/Input3/2002/03/ BLANKLINE root/Input2/2005/05/ root/Input3/2005/05/ BLANKLINE root/Input1/2005/12/ root/Input3/2005/12/ BLANKLINE def date_key(path): return path[-7:] groups = [list(g) for _,g in groupby(sorted(dirs, key=date_key), date_key)] for g in groups: print '\n'.join(path for path in sorted(g)) print if __name__ == __main__: import doctest doctest.testmod() I really wanted nested join calls for the output, to suppress that trailing blank line, but I kept getting confused and couldn't sort it out. It would better to use the os.path module, but I couldn't find the function in there lets me pull out path tails. I didn't filter out stuff that didn't match the date path convention you used. -- Neil Cerutti -- http://mail.python.org/mailman/listinfo/python-list
Any python based Live Web Chat Support
Is there any open source live web chat support program or script out there? Any you can recommend? -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
Noud Aldenhoven wrote: There are a (small) couple of other issues where rational numbers could be handy. That's because rational numbers are exact, irrational numbers (in python) aren't. But these issues are probably too mathematical to be used in For the sake of me being less ignorant, could you please point me a language where irrational numbers are exact? Regards, -- . Facundo . Blog: http://www.taniquetil.com.ar/plog/ PyAr: http://www.python.org/ar/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Need better run/edit method. I have to restart the shell after every script change.
Thanks guys. I'll give it a try. Brian Blais wrote: Mark wrote: I'm currently running the IDLE shell under Python 2.5, on Windows XP. Every time I edit my .txt or .py file, I have to restart the IDLE shell for the changes to take effect. It's pretty annoying. Assuming IDLE is already open, here are the steps that I typically take: 1. Open .txt version of module or script using notepad 2. make changes 3. save .txt file as .txt file 4. save .txt file as .py file 5. reset IDLE 6. import module again why do you involve notepad, and .txt files? Instead, try this: 1. Run Idle 2. Choose File/New Window 3. Edit your .py file, and save it as a .py file 4. Choose Run/Run Module 5. Make changes, and save again 6. Choose Run/Run Module 7. etc... you don't need to close IDLE ever. IDLE refers to the editor, and the shell that runs connected to it. If you have just the shell, you can open the editor with File/New Window. If you have just the editor, you can choose Run/Python Shell or Run/Run Module depending on what you want to do, to get the shell. You can also take a .py file in the Windows explorer, right-click, and choose Open with IDLE to start editing it directly. You shouldn't save things as .txt, because then IDLE will not recognize it is python you are writing, and the right-click trick probably won't work either. You should never use Notepad, because it is just icky, and doesn't know about any programming languages. :) Hope this helps, Brian Blais -- - [EMAIL PROTECTED] http://web.bryant.edu/~bblais -- http://mail.python.org/mailman/listinfo/python-list
Re: How to modify object attribute by python C API
Thanks for the replies. For the checking, I found we have to spend a lot of codes to check the Python API's results. That is a pain. Is it reasonable to ignore the result check of APIs like PyString_FromString and PyString_AsString which will fail only when out of memory. Unfortunately there is no exception thrown (in C++) so that we can integrate the error handling. What is the best way(less code) to handle the error checking in normal practice? On Jan 11, 4:37 pm, Huayang Xia [EMAIL PROTECTED] wrote: I get a python object by running a class' constructor. Then I need to modify the instance's attribute just like obj.attr1.attr2 = 'a' if in python's term. PyObject* py_obj_attr1 = PyObject_GetAttrString(obj, attr1); PyObject_SetAttrString(py_obj_attr1, attr2, PyString_FromString(a)); Py_DECREF(py_obj_attr1); The object py_obj_attr1 is said to be a New reference. It's confusing, does it refer to the same object as obj.attr1 in python's term? So that the above code equals: obj.attr1.attr2 = 'a' in python's term. I -- http://mail.python.org/mailman/listinfo/python-list
getting the name of hyperlinks in a file
folks, I am trying to write a script that would open a download server and download all the files and store them in a list for example Download server is http://download.fedora.redhat.com/pub/fedora/linux/core/updates/5/SRPMS/ is there any way this can be done in python?? -- http://mail.python.org/mailman/listinfo/python-list
ArchGenXML please help
I am creating a workflow in plone using argouml and archgenxml. I have been following the steps on the site:- http://plone.org/documentation/tutorial/anonymously-adding-custom-content-types-with-argouml-and-archgenxml/creating-a-class-and-workflow-with-argouml However I am confused at step 9 in creating the class section, where it says: Now, save this file as ProcessImprovement.zargo. Pull up a command prompt and navigate to that directory. Make sure that you've added the ArchGenXML directory to your env path, and type the following: C:\Sandbox\Plone\TutorialArchGenXML.py ProcessImprovement.zargo I have saved the file in the location C:\Documents and Settings\Tony\Desktop\Test\ProcessImprovement.zargo However I dont know what to type in the python command prompt!!! Can anyone help my, I would be very greatful, or if I am in the wrong place do you know another forum where I could go as I have tried the plone online on and it is no good. Thank you. -- View this message in context: http://www.nabble.com/ArchGenXML-please-help-tf2966867.html#a8301441 Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
module file
I am willing to retrieve the file an imported module came from; module.__file__, or inspect.getfile(module) only gives me the relative file name. How do I determine the path? Its obviously possible from python: ipython displays the information (interactively: *module?*). Python 2.4 on Suse 9.3 (clueless, I guess) -- http://mail.python.org/mailman/listinfo/python-list
modules...n methods
First of all thnx guys for ur cover on ma questionsOk some more then...whats the way to read the sourcecode of methods and built in functions? -- http://mail.python.org/mailman/listinfo/python-list
Re: ArchGenXML please help
tonydevlin a écrit : I am creating a workflow in plone using argouml and archgenxml. I have been following the steps on the site:- http://plone.org/documentation/tutorial/anonymously-adding-custom-content-types-with-argouml-and-archgenxml/creating-a-class-and-workflow-with-argouml However I am confused at step 9 in creating the class section, where it says: Now, save this file as ProcessImprovement.zargo. Pull up a command prompt and navigate to that directory. Make sure that you've added the ArchGenXML directory to your env path, and type the following: C:\Sandbox\Plone\TutorialArchGenXML.py ProcessImprovement.zargo I have saved the file in the location C:\Documents and Settings\Tony\Desktop\Test\ProcessImprovement.zargo However I dont know what to type in the python command prompt!!! Which *python* command prompt ? The author is talking about a shell, here (you know, this strange stuff that looks like good ole time DOS...). -- http://mail.python.org/mailman/listinfo/python-list
'LoadFile' not found when invoking Acrobat via wx.lib.pdfwin
Hi,
I get the following traceback when trying to have
wx.lib.pdfwin.PDFWindow open a PDF file:
E:\Tutoring\Teacher\Flashcardspython pdfwin1.py
Traceback (most recent call last):
File pdfwin1.py, line 50, in OnOpenButton
self.pdf.LoadFile(dlg.GetPath())
File
C:\Python24\lib\site-packages\wx-2.6-msw-unicode-enthought\wx\lib\pdfwin
.py, line 34, in LoadFile
return self.CallAXMethod('LoadFile', fileName)
File
C:\Python24\lib\site-packages\wx-2.6-msw-unicode-enthought\wx\activex.py
, line 385, in CallAXMethod
return self._CallAXMethod(name, args)
File
C:\Python24\lib\site-packages\wx-2.6-msw-unicode-enthought\wx\activex.py
, line 378, in _CallAXMethod
return _activex.ActiveXWindow__CallAXMethod(*args)
KeyError: 'method LoadFile not found'
The code in pdfwin1.py is from
http://www.daniweb.com/code/snippet618.html
How could the ActiveX control PDFWindow possibly
*not* find the 'LoadFile' method, I wonder. - Or
am I misinterpreting the message?
(I am running Enthought Python 2.4 on Windows XP.)
Thank you in advance for any ideas as to what
the problem might be,
Christian
--
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Re: modules...n methods
lee wrote: whats the way to read the sourcecode of methods Easy. Look up the .py file and open it in an editor of your choice. Those files are, for example, in /usr/lib/python. and built in functions? Get your python interpreter's source code and look up the functions there. Regards, Björn -- BOFH excuse #370: Virus due to computers having unsafe sex. -- http://mail.python.org/mailman/listinfo/python-list
Re: context managers and generators
Laszlo Nagy wrote: I'm still thinking there is a better way to do it, and would appreciate any ideas. Everything can be implemented with goto and arrays. But is that really better? Regards, Björn -- BOFH excuse #174: Backbone adjustment -- http://mail.python.org/mailman/listinfo/python-list
Re: What about this?
Dr. Who wrote: What's more amazing is that anyone would click on the link at all given the increasing number of website that provide hidden content that tries to deliver spyware or viruses just by getting visitors. How could active input reach *me* if I just fed the W3C validator with the URL? Regards, Björn -- BOFH excuse #184: loop found in loop in redundant loopback -- http://mail.python.org/mailman/listinfo/python-list
Re: Parallel Python
On Jan 12, 2007, at 15:08, Paul Boddie wrote: It seems to me that a more useful first step would be to create an overview of the different modules and put it on the python.org Wiki: http://wiki.python.org/moin/FrontPage http://wiki.python.org/moin/UsefulModules (a reasonable entry point) If no-one beats me to it, I may write something up over the weekend. That sounds like a good idea. I won't beat you to it, but I'll have a look next week and perhaps add information that I have. Konrad. -- - Konrad Hinsen Centre de Biophysique Moléculaire, CNRS Orléans Synchrotron Soleil - Division Expériences Saint Aubin - BP 48 91192 Gif sur Yvette Cedex, France Tel. +33-1 69 35 97 15 E-Mail: [EMAIL PROTECTED] - -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
In article [EMAIL PROTECTED], Facundo Batista [EMAIL PROTECTED] writes: | Noud Aldenhoven wrote: | | There are a (small) couple of other issues where rational numbers could be | handy. That's because rational numbers are exact, irrational numbers (in | python) aren't. But these issues are probably too mathematical to be used in | | For the sake of me being less ignorant, could you please point me a | language where irrational numbers are exact? Some of the algebraic languages. (2/3)^(1/5) is held as such and manipulated appropriately. Yes, I know that's cheating :-) Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
parsing a file name
I have a filename cairo-2.3.4.src.rpm Is there any way i can only get 2.3.4 from this file name thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie imap lib question
All I have to go on is the RFC2060 standard which says: 7.3.1. EXISTS Response Contents: none The EXISTS response reports the number of messages in the mailbox. This response occurs as a result of a SELECT or EXAMINE command, and if the size of the mailbox changes (e.g. new mail). The update from the EXISTS response MUST be recorded by the client. Example:S: * 23 EXISTS -- http://mail.python.org/mailman/listinfo/python-list
What is a perl hash in python
I am new to Pyton. I am trying to modify and understand a script someone else wrote. I am trying to make sense of the following code snippet. I know line 7 would be best coded with regex. I first would like to understand what was coded originally. thelistOut looks like a hash to me (I'm more familiar with perl). Perhaps someone could translate from perl to python for me - not in code but just in concept. Here is the code. This script is reading the list thelistOut and then removing any items in RSMlist and taking the remainder and putting them in graphAddressOut with the formatting. This is a SAMPLE of what is in the lists referenced below in the loop: thelistOut = [(632, ['/usr/local/www/data-dist/mrtg/main/test/172.16.0.23_9.log']), (145, ['/usr/local/www/data-dist/mrtg/main/test/172.16.0.23_13.log']), (0, ['/usr/local/www/data-dist/mrtg/main/test/172.16.0.23_5.log'])] RSMList = ['172.16.0.1_1', '172.16.0.1_2', '172.16.0.1_3', '172.16.0.1_4', '172.16.0.1_5'] #--Loop 1 - w = 0 while w 45: fileOut = string.split(thelistOut[w][1][0],.log) fileOutSplitedCommon = string.split(fileOut[0], main/) fileOut2D = string.split(fileOutSplitedCommon[1], /) fileOut = string.split(fileOut[0],data-dist) if fileOut2D[1] in RSMList: w = w + 1 continue graphAddressOut = tag1 + logUrl + fileOut[1] + extention1 + tag2 + bSWITCH: + string.swapcase(fileOut2D[0]) + nbsp;nbsp; nbsp;PORT ID: + fileOut2D[1] + /bbr + imgTitleTag + imgTag1 + logUrl + fileOut[1] + extention2 + imgTag2 + tag3 + tag5 outputOut.append(graphAddressOut) strOut = strOut + graphAddressOut w = w + 1 #--Loop 1 - -- Karyn Williams Network Services Manager California Institute of the Arts [EMAIL PROTECTED] http://www.calarts.edu/network -- http://mail.python.org/mailman/listinfo/python-list
Re: Any python based Live Web Chat Support
johnny sayeth, on 01/12/2007 11:11 AM: Is there any open source live web chat support program or script out there? Any you can recommend? Why don't you install ejabberd (a Jabber server implemented in erlang) and install Muckl (http://zeank.in-berlin.de/muckl/), an AJAX client for multi-user chat (or Jwchat for one on one chat). Both Muckl and JWChat are embeddable in a web page, as they use just HTML/Javascript, with some work. Other than that, if you want to stick to a Python solution, I do believe Nevow project comes with a live chat demo, which you can customize. --Kartic -- http://mail.python.org/mailman/listinfo/python-list
Re: ArchGenXML please help
Bruno Desthuilliers wrote: tonydevlin a écrit : I am creating a workflow in plone using argouml and archgenxml. I have been following the steps on the site:- http://plone.org/documentation/tutorial/anonymously-adding-custom-content-types-with-argouml-and-archgenxml/creating-a-class-and-workflow-with-argouml However I am confused at step 9 in creating the class section, where it says: Now, save this file as ProcessImprovement.zargo. Pull up a command prompt and navigate to that directory. Make sure that you've added the ArchGenXML directory to your env path, and type the following: C:\Sandbox\Plone\TutorialArchGenXML.py ProcessImprovement.zargo I have saved the file in the location C:\Documents and Settings\Tony\Desktop\Test\ProcessImprovement.zargo However I dont know what to type in the python command prompt!!! Which *python* command prompt ? The author is talking about a shell, here (you know, this strange stuff that looks like good ole time DOS...). -- http://mail.python.org/mailman/listinfo/python-list I yes sorry I was obviously not thinking properly, however there is still a problem, when I run this in dos after I have changed to the correct directory the ArchGenXML file that I downloaded does not work. I renamed it from its original name because that did not work, it just came up with can not find program for it to run off. It still does the same. -- View this message in context: http://www.nabble.com/ArchGenXML-please-help-tf2966867.html#a8302734 Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
Re: parsing a file name
On 12 Jan 2007 09:16:51 -0800, CSUIDL PROGRAMMEr [EMAIL PROTECTED] wrote: I have a filename cairo-2.3.4.src.rpm Is there any way i can only get 2.3.4 from this file name Is this a one off, or do you have to process multiple files with similar names? -- Tim Williams -- http://mail.python.org/mailman/listinfo/python-list
Re: parsing a file name
On 12 Jan 2007 09:16:51 -0800, CSUIDL PROGRAMMEr [EMAIL PROTECTED] wrote: I have a filename cairo-2.3.4.src.rpm Is there any way i can only get 2.3.4 from this file name thanks -- http://mail.python.org/mailman/listinfo/python-list I'm trying to think of a good reason to extract the version from the filename instead of using RPM to get the real version from the metadata and I can't come up with one. -- http://mail.python.org/mailman/listinfo/python-list
Re: parsing a file name
Chris Mellon wrote: I'm trying to think of a good reason to extract the version from the filename instead of using RPM to get the real version from the metadata and I can't come up with one. The inquirer doesn't have any RPM handling tools installed/available or is dealing with a lot of versioned filenames which might be a selection of different, arbitrary formats. Try harder! ;-) Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: What is a perl hash in python
In [EMAIL PROTECTED], Karyn Williams wrote: I am new to Pyton. I am trying to modify and understand a script someone else wrote. I am trying to make sense of the following code snippet. I know line 7 would be best coded with regex. What is line 7 in the snippet? I first would like to understand what was coded originally. thelistOut looks like a hash to me (I'm more familiar with perl). It's a list which contains tuples. Each tuple contains an integer and a list with one string that looks like a pathname. Perhaps someone could translate from perl to python for me - not in code but just in concept. Which Perl? You gave us Python!? Here is the code. This script is reading the list thelistOut and then removing any items in RSMlist and taking the remainder and putting them in graphAddressOut with the formatting. There's nothing removed from `thelistOut`. Names where the filename/basename without the extension is in `RSMList` are not processed and added to `outputOut`. This is a SAMPLE of what is in the lists referenced below in the loop: thelistOut = [(632, ['/usr/local/www/data-dist/mrtg/main/test/172.16.0.23_9.log']), (145, ['/usr/local/www/data-dist/mrtg/main/test/172.16.0.23_13.log']), (0, ['/usr/local/www/data-dist/mrtg/main/test/172.16.0.23_5.log'])] RSMList = ['172.16.0.1_1', '172.16.0.1_2', '172.16.0.1_3', '172.16.0.1_4', '172.16.0.1_5'] #--Loop 1 - w = 0 while w 45: The loop looks odd. Is it really a literal 45 here or are all elements of `thelistOut` processed? Then a for loop over the list if you don't need `w` for something other than indexing into the list or an `xrange()` object are much cleaner than using a while loop and updating the counter manually. That the second element of the tuple seems to be always a list with one item looks odd too. fileOut = string.split(thelistOut[w][1][0],.log) fileOutSplitedCommon = string.split(fileOut[0], main/) fileOut2D = string.split(fileOutSplitedCommon[1], /) fileOut = string.split(fileOut[0],data-dist) This might be more readable and understandable if `os.path.splitext()` and `os.path.split()` where used. if fileOut2D[1] in RSMList: w = w + 1 continue Might be cleaner to negate the test and use the remaining code as body of that ``if`` statement. graphAddressOut = tag1 + logUrl + fileOut[1] + extention1 + tag2 + bSWITCH: + string.swapcase(fileOut2D[0]) + nbsp;nbsp; nbsp;PORT ID: + fileOut2D[1] + /bbr + imgTitleTag + imgTag1 + logUrl + fileOut[1] + extention2 + imgTag2 + tag3 + tag5 outputOut.append(graphAddressOut) strOut = strOut + graphAddressOut That's an unreadable mess. Better use string formatting. And last but not least: a hash is called dictionary in Python. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
I need to consume a .NET web service in a Python client
Hello, I am a .NET developer experimenting with Python. I need to consume a .NET web service in a Python client. how do I go about it? which libraries do i need? pointers to help me get started would be much appreciated. I am just a newbie to the Python world so please be bear with my novice queries. thanks in advance, Mohit -- http://mail.python.org/mailman/listinfo/python-list
Re: parsing a file name
On 12 Jan 2007 10:23:41 -0800, Paul Boddie [EMAIL PROTECTED] wrote: Chris Mellon wrote: I'm trying to think of a good reason to extract the version from the filename instead of using RPM to get the real version from the metadata and I can't come up with one. The inquirer doesn't have any RPM handling tools installed/available or is dealing with a lot of versioned filenames which might be a selection of different, arbitrary formats. Try harder! ;-) Paul Well, the answer to the first is get some, so that's not a good reason. And the second would mean that they asked a question on c.l.p without giving all the background information on the task they were doing, and we know that never happens. -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
On 1/12/07, Facundo Batista [EMAIL PROTECTED] wrote: Noud Aldenhoven wrote: There are a (small) couple of other issues where rational numbers could be handy. That's because rational numbers are exact, irrational numbers (in python) aren't. But these issues are probably too mathematical to be used in For the sake of me being less ignorant, could you please point me a language where irrational numbers are exact? I'm not sure, but I tought MAPLE could do it. This language has been designed for solving mathimatical equotations (and other simulair stuf) and could handle irrational numbers. But ofcourse irrational numbers could never be exact when printed in an g-notation (g 1) system. But now I mention that sentense is wrong... it should be: That's because rational numbers are exact, but in python they aren't most of the time. To make irrational numbers exact in python should be, I think, more unefficient than making rational numbers. But they could be very handy too for calculating maths or physics equotations. Regards, Noud -- :3 )~ -- http://mail.python.org/mailman/listinfo/python-list
Re: I need to consume a .NET web service in a Python client
mohit wrote: Hello, I am a .NET developer experimenting with Python. I need to consume a .NET web service in a Python client. how do I go about it? which libraries do i need? pointers to help me get started would be much appreciated. I am just a newbie to the Python world so please be bear with my novice queries. thanks in advance, Mohit Start Here http://www.diveintopython.org/soap_web_services/index.html Example Client http://www.diveintopython.org/soap_web_services/first_steps.html Ravi Teja -- http://mail.python.org/mailman/listinfo/python-list
Re: I need to consume a .NET web service in a Python client
On 12 Jan 2007 11:11:21 -0800, Ravi Teja [EMAIL PROTECTED] wrote: Start Here http://www.diveintopython.org/soap_web_services/index.html Example Client http://www.diveintopython.org/soap_web_services/first_steps.html Sadly, SOAPpy doesn't seem to be maintained any more. I'd take a look at ZSI, instead. http://tinyurl.com/ylas4k -- Cheers, Simon B [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
On 12 Jan 2007 15:55:39 GMT, Nick Maclaren [EMAIL PROTECTED] wrote: In article [EMAIL PROTECTED], Carsten Haese [EMAIL PROTECTED] writes: | but there are more use | cases for Decimal than for Rational. That is dubious, but let's not start that one again. Decimals are good for holding financial values. There's a whole lot of software out there that deals with money. -- Cheers, Simon B [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
In article [EMAIL PROTECTED], Simon Brunning [EMAIL PROTECTED] writes: | | | but there are more use | | cases for Decimal than for Rational. | | That is dubious, but let's not start that one again. | | Decimals are good for holding financial values. There's a whole lot of | software out there that deals with money. Sigh. I was hoping not to have that myth perpetrated again. Financial calculations need decimal FIXED-point, with a precisely specified precision. It is claimed that decimal FLOATING-point helps with providing that, but that claim is extremely dubious. I can explain the problem in as much detail as you want, but would very much rather not. Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
Simon Brunning schrieb: On 12 Jan 2007 15:55:39 GMT, Nick Maclaren [EMAIL PROTECTED] wrote: In article [EMAIL PROTECTED], Carsten Haese [EMAIL PROTECTED] writes: | but there are more use | cases for Decimal than for Rational. That is dubious, but let's not start that one again. Decimals are good for holding financial values. There's a whole lot of software out there that deals with money. Do not forget: - Time - Personal Data (like birthdays, age) Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: Rational Numbers
On 12 Jan 2007 19:41:52 GMT, Nick Maclaren [EMAIL PROTECTED] wrote: Sigh. I was hoping not to have that myth perpetrated again. Financial calculations need decimal FIXED-point, with a precisely specified precision. It is claimed that decimal FLOATING-point helps with providing that, but that claim is extremely dubious. I can explain the problem in as much detail as you want, but would very much rather not. Sorry, Nick, you might have to. ;-) I'm not educated in these matters, so I'd genuinely like to know why you say that. Not educated, but I do have some experience; I've used both fixed and floating point Decimal types extensively, and I've found floating types superior. More fiddly, certainly, 'cos you have to explicitly round back down to the precision that you want when you want. But explicit is better than implicit - the number of subtle rounding bugs that I've had to fix 'cos someone didn't realise where rounding was occurring is, uh, well, it happens from time to time. ;-) What am I missing? -- Cheers, Simon B [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
[ANN] XPN 0.7.0
XPN (X Python Newsreader) is a multi-platform newsreader with Unicode support. It is written with Python+GTK. It has features like scoring/actions, X-Face and Face decoding, muting of quoted text, newsrc import/export, find article and search in the body, spoiler char/rot13, random taglines and configurable attribution lines. You can find it on: http://xpn.altervista.org/index-en.html or http://sf.net/projects/xpn Changes in this release: * v0.7.0: added basic multiserver support. This change has required some modifications to the groups db format, in order to keep your subscriptions you need to export to a newsrc file from XPN-0.6.5 and reimport it in XPN-0.7.0. * v0.7.0: now is possible to use Function keys for customized keybindings * v0.7.0: modified the command used to test the connection in order to prevent hamster hang-ups. * v0.7.0: fixed a bug that caused XPN to crash trying to export newsrc file with empty groups subscribed. * v0.7.0: fixed a bug in Apply Scoring and Actions Rules feature that caused XPN crashes trying to apply !kill rule. * v0.7.0: some minor fixes. XPN is translated in Italian French and German, if you'd like to translate it in your language and you are familiar with gettext and po-files editing please contact me ([EMAIL PROTECTED]). -- I may not have gone where I intended to go, but I think I have ended up where I needed to be. |\ | |HomePage : http://nem01.altervista.org | \|emesis |XPN (my nr): http://xpn.altervista.org -- http://mail.python.org/mailman/listinfo/python-list
