🌐 Mailman 3 July 2007 - Pythonmac-SIG - python.org

persistence speeds compared
by David Worrall July 17, 2007

July 17, 2007

Hi all, Does anyone know of a study which compares access-time on of the various python persistence technIques? I'm working w. a dynamic dataset of some 3500 tables - each table grows sequentially. Total data ~= 5GB Don't mind if it's a bit awkward - but for a time-critical applic. so needs to be as fast as possible. I haven't been able to find even a simple comparative analysis. Can anyone point me in the right direction? thanks heaps, David _________________________________________________ experimental polymedia: www.avatar.com.au Sonic Communications Research Group, University of Canberra: creative.canberra.edu.au/scrg

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Python support for Leopard
by Noah Gift July 16, 2007

July 16, 2007

Just an FYI, the version of Python for Leopard, 2.5.1 should reflect that latest revision. It ships with a broken Python. For the novice this could be quite a problem. -- http://www.blog.noahgift.com

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Accessing Resource forks
by Christopher Barker July 13, 2007

July 13, 2007

Hi all, Somehow over all these years, I've managed to use Python on Macs without having it deal with resource forks and all that -- but ironically, now that we're all OS-X all the time, I need to do it now. What I'm trying to do is simple check for the existence of a resource fork, and if it's there, the size. This is what I've tried: import Carbon.File as File files = ["junk.txt", "junk_rsc.txt"] for filename in files: f = File.FSRef(filename) print "file path is:", f.FSRefMakePath() i = f.FSGetCatalogInfo(0) print "logical size is:", i[0].rsrcLogicalSize print "Physical size is:", i[0].rsrcPhysicalSize In this case, junk.txt was created at the command line, so it shouldn't have a resource fork. junk_rsc.txt I opened up in resedit, which should have given it a small resource fork. Running this script, I get: file path is: /Users/cbarker/temp/AFP-SMB/junk.txt logical size is: 65543 Physical size is: 30457855 file path is: /Users/cbarker/temp/AFP-SMB/junk_rsc.txt logical size is: -593231776 Physical size is: -210763775 The paths are right, so it looks like I've got the FSRef right, but rsrcLogicalSize and rsrcPhysicalSize make no sense. How should I be doing this -- the docs are sparse, to say the least! By the way, I might as well tell you the real goal, maybe one of you will have a better idea. We have a Windows file server that is about to be retired. over the years, people of have put files on it using both the AFP and SMB protocols (the server is running MS services for macintosh). These are all mixed up. However, any file put up with one protocol loses it's resource fork (and type and creator) if brought down with the other protocol. Our goal is to clean up this mess automatically. The idea at hand is that a file brought down with AFP will either: Have a nice resource fork, in which case it was put up with AFP, and we're happy Have no resource fork, in which case it never had one, and we dont' care what protocol was used, or it was put up with SMB, and we can then bring it down that way instead. The other obvious option is to look for the ._* files, which is where the resource fork is stored with the SMB protocol. However, we're concerned that that may not be reliable -- if a file were put up with SMB, then replaced with AFP, there may be a ._* file, but it won't work right. This actually seems pretty likely as while we have this mixed system, there have been a lot of "that didn't work, please put the file back up with APF" iterations. Thanks for your thoughts. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker(a)noaa.gov

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Re: [Pythonmac-SIG] Mac oriented Python book (was: no subject)
by vmerritt＠verizon.net July 11, 2007

July 11, 2007

Actually I am working in: Maya 8.5(http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=7635643) and Next Limits Real Flow 4(http://www.nextlimit.com/nlscript/) My interest is in accessing the Python scripting functionality within these and other applications. I am new to Python and programming. I need all the help I can get. Victor Merritt From: Daniel Lord <daniellord(a)mac.com> Date: 2007/07/10 Tue AM 10:35:36 CDT To: has <hengist.podd(a)virgin.net>, Victor Merritt <vmerritt(a)verizon.net> Cc: pythonmac-sig(a)python.org Subject: Re: [Pythonmac-SIG] Mac oriented Python book (was: no subject) I am guessing that Victor is either interested in scripting Blender or Modo since those are the only higher-end 3D graphics modeling and rendering packages I know of that support Python scripting. I am ruling out Poser and Shade. The issue with those packages is that they use an embedded interpreter so standalone aspects of Python (PyObjC, py2app, wxPython) are useless in that context as far I have been able to determine. I use Modo but have only tinkered with using Python with it. On Jul 10, 2007, at 7:53, has wrote: > Victor Merritt wrote: > >> I am an Visual Effects artist in need of a good Mac oriented Python >> book. >> I have been reading the online materials, but I don't always have >> the time >> to sit in front of a computer, thus my need for a good Mac focused >> Python Book. >> Any suggestions would be very helpful. > _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG(a)python.org http://mail.python.org/mailman/listinfo/pythonmac-sig

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Re: [Pythonmac-SIG] Mac oriented Python book (was: no subject)
by has July 10, 2007

July 10, 2007

Victor Merritt wrote: > I am an Visual Effects artist in need of a good Mac oriented Python > book. > I have been reading the online materials, but I don't always have > the time > to sit in front of a computer, thus my need for a good Mac focused > Python Book. > Any suggestions would be very helpful. I don't think there are any specifically Mac-oriented Python books, but the language and core library is the same on all platforms so any good Python book will do for learning those. Other folks can probably recommend specific titles, though it'd help if you indicate if you're looking for beginner, intermediate or expert material. As far as Mac-specific extensions go, most of the stuff in standard library you should just ignore as being obsolete. Some of the Carbon extensions are still relevant if you need to do Carbon stuff, in which case refer to their docstrings and Apple's Carbon documentation to make sense of those. As for third-party packages, the main three are PyObjC, py2app and appscript, all of which include basic documentation and examples. If using PyObjC you should also refer to Apple's reference and API documentation. If you want a general book for learning Cocoa programming, Aaron Hillegass's 'Cocoa Programming for OS X' is well regarded. If using appscript you should also refer to individual applications' dictionaries and, if provided, supplementary documentation. If you want a general book on AppleScript, get Matt Neuburg's 'AppleScript: The Definitive Guide'. If you want more specific advice, tell us what sort of stuff it is you want to do and what programming skills you already have. HTH has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org http://appscript.sourceforge.net/objc-appscript.html

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Can someone help me reverse engineer this installer?
by skip＠pobox.com July 10, 2007

July 10, 2007

A long time ago Sam Thorne created a Mac installer for SpamBayes. It's referenced here: http://entrian.com/sbwiki/MacOSXPackage and source is available here: http://www.s-j-t.co.uk/SpamBayes/SpamBayesPkg%200.5.zip The binary package here: http://www.s-j-t.co.uk/SpamBayes/SpamBayesPackage.pkg.tgz won't untar for me. It complains about a "lone zero block at 678". I'd like to start generating Mac installer packages for the normal SpamBayes distribution, but for that I need some help getting started (having never done any Mac package creation before). I sent email to the author asking about how he created the one he did but haven't heard back from him (maybe he's just on holiday). Can one of the MacPython experts here deduce how the above package was generated and suggest how to proceed? I don't even know what the best package creator is on the Mac for Python-based apps. Thx, Skip Montanaro

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ChiPy Presenters Wanted
by Brian Ray July 10, 2007

July 10, 2007

Greetings: ChiPy <http://chipy.org> is looking for presenters for our August 9th meeting. This is our regular monthly meeting; although, it happens to be the day before C4 starts. Anyone who is in town is more than welcome to attend. We will love to have you regardless if your a presenter or not. We still need to find presenters and a venue so spread the word. Some possible venues may be Google's Chicago Office or UIC. The topic for this meeting is Snakes On Apples. The planning page may be found on our wiki: <http://chipy.org/SnakesOnApples>. A meeting dedicated to Python on the Macintosh is a ChiPy first. Please ping this list, the ChiPy list <http://mail.python.org/mailman/ listinfo/chicago> , update the wiki page, or contact me off the list if your even slightly interested in presenting. Kind Regards, Brian Ray bray(a)sent.com http://kazavoo.com/blog

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(no subject)
by vmerritt＠verizon.net July 10, 2007

July 10, 2007

Greetings All, I am an Visual Effects artist in need of a good Mac oriented Python book. I have been reading the online materials, but I don't always have the time to sit in front of a computer, thus my need for a good Mac focused Python Book. Any suggestions would be very helpful. Thank you in advance, Victor Merritt

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Call PyObjC methods from wxPython?
by Kevin Walzer July 3, 2007

July 3, 2007

I hope this isn't a dumb question, but I am wondering if it's possible for me to call some non-windowing Cocoa routines (via PyObjC) from a wxPython application. Specifically, I am trying to retrieve a file icon via NSWorkspace for display in a wxPython window; I'm probably going to filter it through PIL first to convert it into a format readable by wxPython. Why not do the whole app in PyObjC? Mainly because wxPython fits my head better in terms of my prior background (it's fairly easy for me to translate Tkinter GUI concepts into wxPython--it's a much bigger leap to nib files). Any advice is appreciated. -- Kevin Walzer Code by Kevin http://www.codebykevin.com

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problem with CarbonEvt, Thread and sleep
by has July 2, 2007

July 2, 2007

Hi all, Trying to implement a watchdog thread in a Carbon Event-based application. Trouble is, the thread's sleep() call never seems to return. (10.4.9/PPC/Python 2.5) Demonstration code below: #!/usr/local/bin/python from threading import Thread from time import sleep from Carbon.CarbonEvt import * def stop(): print 'sleep' sleep(2) print 'wake' # never executes QuitApplicationEventLoop() print 'start thread' t = Thread(target=stop) t.start() print 'start event loop' RunApplicationEventLoop() Any ideas? Thanks, has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org http://appscript.sourceforge.net/objc-appscript.html

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