🌐 Mailman 3 July 2008 - Pythonmac-SIG - python.org

quick tutorial on aemreceive
by Rand Dvorak July 27, 2008

July 27, 2008

I have an app that I created and put into an app wrapper using py2app, now need for it to be activated with a folder action script. All my research so far has pointed me to the aemreceive module, but I have not idea what to use for for the code for the second argument to installeventhandler. Basically, I need the eventhandler to be handed the list of files added to the folder to which the folder action is attached. Can someone point me to example? or provide me with a quick and dirty explanation how to determine that code? Thanks so much....

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iTunes query
by David Blackman July 27, 2008

July 27, 2008

I'm trying to figure out how AOEM queries work on iTunes, the code I'm trying looks like: for track in library.tracks[appscript.its.name().encode("utf-8").find("Sun")]: (I'm trying to find all the tracks in my library with the string "Sun" in the title) and the error I'm getting is: Traceback (most recent call last): File "./find_deleted_files2.py", line 78, in <module> main() File "./find_deleted_files2.py", line 75, in main process_library(library) File "./find_deleted_files2.py", line 68, in process_library for track in library.tracks[appscript.its.name().encode("utf-8").find("Sun")]: File "/Library/Python/2.5/site-packages/appscript-0.18.1-py2.5-macosx-10.5-i386.egg/appscript/reference.py", line 524, in __getitem__ AttributeError: 'int' object has no attribute 'AS_aemreference' what am I doing wrong? thanks, --dave -- The Whole World + This Email = The Whole World

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bdist_mpkg Python version prefix
by Christopher Burns July 25, 2008

July 25, 2008

When distributing Mac binaries of numpy, we've run into some confusion from users on the Python dependency. bdist_mpkg reports the MacPython ( python.org) dependency as the "System Python". This terminology is confusing as users see the "Apple Python" in the /System folder and believe they meet the required version. Could this be changed to something more descriptive? Updating the entry in the FRIENDLY_PREFIX is all that is needed. cburns@bdist_mpkg 12:31:38 $ grin -A 8 "FRIENDLY_PREFIX" ./plists.py: 70 : FRIENDLY_PREFIX = { 71 + os.path.expanduser(u'~/Library/Frameworks') : u'User', 72 + u'/System/Library/Frameworks' : u'Apple', 73 + u'/Library/Frameworks' : u'python.org Framework Build', 74 + u'/opt/local' : u'DarwinPorts', 75 + u'/usr/local' : u'Unix', 76 + u'/sw' : u'Fink', 77 + } On the numpy-list, Christopher Barker had proposed changing it to this: u'/Library/Frameworks' : u'python.org Framework Build', Thanks! Chris -- Christopher Burns Computational Infrastructure for Research Labs 10 Giannini Hall, UC Berkeley phone: 510.643.4014 http://cirl.berkeley.edu/

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PyObjC: debugging error-less crashes?
by Daniel Ashbrook July 24, 2008

July 24, 2008

I'm working my way through the excellent book "Cocoa Programming for Mac OS X", but using PyObjC instead of ObjC. For the most part it's working very well - a testament to the awesomeness of PyObjC! However, I'm occasionally getting a crash from my application that gives no errors - it just enters into the debugger with no other output. A backtrace leads through C code to (inevitably) objc_msgSend(), which doesn't help much. In one case I managed to figure out that I needed to add myFunc_ = objc.accessor(myFunc_) after the definition of myFunc_() (though I have no clue why), but in the current case that doesn't help. The relevant chunk of code is below. My debug log shows the "Ending alert sheet" message, but not the "Alert ended" message. @IBAction def removeEmployee_(self, sender): selectedPeople = self._employeeController.selectedObjects() alert = NSAlert.alertWithMessageText_defaultButton_alternateButton_otherButton_informativeTextWithFormat_(u'Delete?', u'Delete', u'Cancel', None, u'Do you really want to delete %d people?' % len(selectedPeople)) NSLog(u'Starting alert sheet') alert.beginSheetModalForWindow_modalDelegate_didEndSelector_contextInfo_(self._tableView.window(), self, 'alertEnded:code:context:', None) NSLog(u'Ending alert sheet') def alertEnded_code_context_(self, alert, choice, context): NSLog(u'Alert ended') if choice == NSAlertDefaultReturn: self._employeeController.remove(None) Thanks in advance for any hints, whether general or specific! Daniel Ashbrook

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Tkinter apps hang upon quitting
by Michael Crawford July 23, 2008

July 23, 2008

Hi, I'm new to the list, and new to Tkinter. I'm working my way through the Tkinter tutorial, but every time I try to quit a Tkinter program, it hangs with the spinning cursor, and won't completely quit. This happens with even very simple programs, and doesn't seem to have anything to do with my own source code. I would be surprised if this wasn't already a well-known problem, as it's 100% repeatible for me, but Google yields no insight. I'm using the MacPython 2.5.2 from python.org, running my programs from IDLE, on a Core Duo (not Core 2 Duo) MacBook Pro running Mac OS X 10.4.11. Thanks for your advice. -- Michael David Crawford mdcrawford at gmail dot com Enjoy my art, photography, music and writing at http://www.geometricvisions.com/ --- Free Compact Disc ---

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Duff installation
by Jeremiah Kelly July 21, 2008

July 21, 2008

Dear List I'm new (very new ) to Python and whilst exploring the help on python 2.5.2 i get the following error message, I've tried a fresh install of pythonMac and a restart, I would be glad of some help Best wishes Jeremiah help> modules Please wait a moment while I gather a list of all available modules... Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/site.py", line 346, in __call__ return pydoc.help(*args, **kwds) File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1648, in __call__ self.interact() File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1666, in interact self.help(request) File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1682, in help elif request == 'modules': self.listmodules() File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1803, in listmodules ModuleScanner().run(callback) File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1854, in run for importer, modname, ispkg in pkgutil.walk_packages(): File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pkgutil.py", line 125, in walk_packages for item in walk_packages(path, name+'.', onerror): File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pkgutil.py", line 110, in walk_packages __import__(name) File "/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/site-packages/PyOpenGL-3.0.0b1-py2.5.egg/OpenGL/Tk/ __init__.py", line 87, in <module> _default_root.tk.call('package', 'require', 'Togl') _tkinter.TclError: can't find package Togl

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Trouble installing PyObjC 2.0 from source
by Mike Covill July 19, 2008

July 19, 2008

Can anyone give me some pointers on installing PyObjC 2.0 from source? I have a fresh installation on my MacBookPro with Leopard 10.5.4 of Python 2.5.2 in /Library/... , and nothing else. I checked out the PyObjC source at "http://svn.red-bean.com/pyobjc/trunk" and ran the "02-develop-all.sh" shell program in pyobjc/. I got lots of errors, some of which were fixed by reverting back to svn 1.4.4. But I am still getting errors like those shown below (first and last error). My litmus test to see if installation was successful is to run python and try to import Foundation or objc in a new shell. First error: > gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk - > fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd > -fno-common -dynamic -DNDEBUG -g -O3 -I/Library/Frameworks/ > Python.framework/Versions/2.5/include/python2.5 -c Modules/objc/ > bundle-variables.m -o build/temp.macosx-10.3-i386-2.5/Modules/objc/ > bundle-variables.o -DPyObjC_STRICT_DEBUGGING -DMACOSX -no-cpp- > precomp -Wno-long-double -g -fexceptions -O1 -Wall -Wstrict- > prototypes -Wmissing-prototypes -Wformat=2 -W -Wshadow -Wpointer- > arith -Wmissing-declarations -Wnested-externs -Wno-long-long -Wno- > import -I/usr/include/libxml2 -Ibuild/codegen/ -Ilibffi-src/include - > Ilibffi-src/powerpc > Modules/objc/bundle-variables.m: In function > ‘PyObjC_loadBundleFunctions’: > Modules/objc/bundle-variables.m:221: error: ‘_localHandler’ > undeclared (first use in this function) > Modules/objc/bundle-variables.m:221: error: (Each undeclared > identifier is reported only once > Modules/objc/bundle-variables.m:221: error: for each function it > appears in.) > Modules/objc/bundle-variables.m: In function > ‘PyObjC_loadBundleFunctions’: > Modules/objc/bundle-variables.m:221: error: ‘_localHandler’ > undeclared (first use in this function) > Modules/objc/bundle-variables.m:221: error: (Each undeclared > identifier is reported only once > Modules/objc/bundle-variables.m:221: error: for each function it > appears in.) > lipo: can't figure out the architecture type of: /var/tmp// > ccehSa3x.out > error: command 'gcc' failed with exit status 1 ... 24000 lines ... Last error: > running develop > running egg_info > creating Lib/pyobjc_framework_XgridFoundation.egg-info > writing requirements to Lib/pyobjc_framework_XgridFoundation.egg- > info/requires.txt > writing Lib/pyobjc_framework_XgridFoundation.egg-info/PKG-INFO > writing top-level names to Lib/pyobjc_framework_XgridFoundation.egg- > info/top_level.txt > writing dependency_links to Lib/pyobjc_framework_XgridFoundation.egg- > info/dependency_links.txt > writing manifest file 'Lib/pyobjc_framework_XgridFoundation.egg-info/ > SOURCES.txt' > writing manifest file 'Lib/pyobjc_framework_XgridFoundation.egg-info/ > SOURCES.txt' > running build_ext > Creating /Library/Frameworks/Python.framework/Versions/2.5/lib/ > python2.5/site-packages/pyobjc-framework-XgridFoundation.egg-link > (link to Lib) > Adding pyobjc-framework-XgridFoundation 2.0 to easy-install.pth file > > Installed /Users/mcovill/projects/pyobjc/pyobjc/pyobjc-framework- > XgridFoundation/Lib > Processing dependencies for pyobjc-framework-XgridFoundation==2.0 > Searching for pyobjc-framework-Cocoa>=2.0 > Reading http://pypi.python.org/simple/pyobjc-framework-Cocoa/ > Couldn't find index page for 'pyobjc-framework-Cocoa' (maybe > misspelled?) > Scanning index of all packages (this may take a while) > Reading http://pypi.python.org/simple/ > No local packages or download links found for pyobjc-framework- > Cocoa>=2.0 > error: Could not find suitable distribution for > Requirement.parse('pyobjc-framework-Cocoa>=2.0') Thanks, Mike Covill

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Re: [Pythonmac-SIG] PyObjC tutorial without Xcode
by Orestis Markou July 19, 2008

July 19, 2008

I don't see why you don't want to use XCode. You can use an external editor for python files (I use MacVim), and let XCode manage the building and packaging. You don't have to use Obj-C (although you can't really use PyObjC without understanding Obj-C). The bundled examples should work out of the box, if you open the project with Xcode. You can find them in /Developer/Examples/Python/ PyObjC Anyway, I have a little "Hello world" PyObjC project here: http://orestis.gr/en/blog/2008/05/17/pyobjc-hello-world/ It has some of the common gotchas annotated, but it's not a tutorial. BTW, everything I say applies to Leopard, using the stock version of Python and PyObjC. Hope I helped, -- Orestis Markou orestis(a)orestis.gr http://orestis.gr/ On 19 Ιουλ 2008, at 11:00 ΠΜ, pythonmac-sig-request(a)python.org wrote: > Send Pythonmac-SIG mailing list submissions to > pythonmac-sig(a)python.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.python.org/mailman/listinfo/pythonmac-sig > or, via email, send a message with subject or body 'help' to > pythonmac-sig-request(a)python.org > > You can reach the person managing the list at > pythonmac-sig-owner(a)python.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Pythonmac-SIG digest..." > Today's Topics: > > 1. Re: Mac IDLE Fonts? (-or- I guess I need glasses.) (Nate) > 2. Re: Mac IDLE Fonts? (-or- I guess I need glasses.) (Kevin Walzer) > 3. PyObjC tutorial without Xcode (Craig Marshall) > 4. Re: PyObjC tutorial without Xcode (Dav Clark) > 5. Re: PyObjC tutorial without Xcode (Craig Marshall) > > From: Nate <afraud(a)gmail.com> > Date: 18 Ιουλίου 2008 12:28:42 ΜΜ GMT+01:00 > To: kw(a)codebykevin.com > Cc: pythonmac-sig(a)python.org > Subject: Re: [Pythonmac-SIG] Mac IDLE Fonts? (-or- I guess I need > glasses.) > > > How can I identify the version of Tk that I'm running? I installed > IDLE using the download of Python 2.5.2 from Python.org. > > > > On Thu, Jul 17, 2008 at 11:15 PM, Kevin Walzer <kw(a)codebykevin.com> > wrote: > Nate wrote: > I don't even have the "Preferences" item in my IDLE menu. I'm > running IDLE > 1.2.2 on Leopard (10.5.4). > > Maybe I should submit a bug-report? > > > > Hmmm. Are you using the system installation of Tk (8.4.7)? > > I'd install a later version of Tcl/Tk from here: http://www.categorifiedcoder.info/tcltk/ > . Try 8.4.19. > > There was some weirdness with the Preferences menu before--with > certain versions of Tk the menu item appeared twice--so I wrote a > patch that set it to appear only once, which Ronald committed. I > think the bug doesn't exist with Tk 8.4.7. However, that version is > so old that I'm disinclined to offer another patch. > > --Kevin > > ------ > > Kevin Walzer > Code by Kevin > http://www.codebykevin.com > > > > > From: Kevin Walzer <kw(a)codebykevin.com> > Date: 18 Ιουλίου 2008 1:20:56 ΜΜ GMT+01:00 > To: Nate <afraud(a)gmail.com> > Cc: pythonmac-sig(a)python.org > Subject: Re: [Pythonmac-SIG] Mac IDLE Fonts? (-or- I guess I need > glasses.) > Reply-To: kw(a)codebykevin.com > > > Nate wrote: >> How can I identify the version of Tk that I'm running? I installed >> IDLE >> using the download of Python 2.5.2 from Python.org. > > Look in /Library/Frameworks. If you don't see Tcl.framework and > Tk.framework, then you are most likely running the Apple-installed > version (8.4.7) installed in /System/Library/Frameworks. > > As I said, this version is very old (c. 2005?). 8.4.19 from the link > I gave you before will work with Python. > > -- > Kevin Walzer > Code by Kevin > http://www.codebykevin.com > > > > > From: "Craig Marshall" <craig9(a)gmail.com> > Date: 18 Ιουλίου 2008 7:25:36 ΜΜ GMT+01:00 > To: pythonmac-sig(a)python.org > Subject: [Pythonmac-SIG] PyObjC tutorial without Xcode > > > Hi, > > I am familiar with python already, and I am familiar with the mac as a > user, but otherwise have no mac development experience. I'm keen to > learn pyobjc and write native mac/python GUI apps. > > I'm currently having problems with outdated-ness and inaccuracies with > both tutorials* I can find on PyObjC, and I think it could be simpler > if I could find a tutorial that didn't involve Xcode (and the xcode > python support seems spotty). Can anyone point me in the right > direction please? I'm happy to use a plain old text editor and > run/debug from the command line, and also I'd rather leave obj-C alone > if possible. I accept that I'll need to use interface builder (which > seems like a great app, anyway). > > Is this possible? If so - pointers would be gratefully received. > > Thanks, > Craig Marshall > > * (http://pyobjc.sourceforge.net/documentation/pyobjc-core/tutorial/index.html > and http://developer.apple.com/cocoa/pyobjc.html) > > > > > From: Dav Clark <dav(a)alum.mit.edu> > Date: 19 Ιουλίου 2008 12:35:41 ΠΜ GMT+01:00 > To: pythonmac-sig(a)python.org > Subject: Re: [Pythonmac-SIG] PyObjC tutorial without Xcode > > > I sent this just to Craig, but figured I should probably send to the > group in retrospect - at least this way something'll be online in > the pythonmac-sig archives... > > > Below my signature is a sample script demonstrating a really minimal > use of pyobjc. This is meant to be run from the command line, and > uses the BTop2 framework from Perfectly Scientific. You can > download that framework for free, but it won't do much if you don't > have the hardware! > > Not exactly a tutorial, but darned simple for sure... I can't > remember if that __getattr__ thing ever worked... I don't think it > did. The Exception thing is _way_ useful (as indicated in the > comments there). The standard exception messages you'll get while > using pyobjc are close to useless. > > I'll add also that I'd not be averse to chipping in to a non-Xcode > pyobjc tutorial online somewhere. I'm not terribly self-motivated > on that, but would do if someone asked for more. > > Cheers, > Dav > -- > Statistical Motion R&D > http://socrates.berkeley.edu/~ivrylab/ > > import objc > > # # Way useful for debugging > # import PyObjCTools.Debugging as Debugging > # Debugging.installVerboseExceptionHandler() > > btop_path = objc.pathForFramework('/Users/dav/Code/bTop.framework') > objc.loadBundle('btop', globals(), bundle_path=btop_path) > # Not sure why I need to do this... I shouldn't! > BTopBoard.setBTopFirmwareDirectory_(btop_path + '/Versions/A/ > Resources') > > class BoardContainer(NSObject): > """BoardContainer should be initialized by BoardControl below""" > board = None > > def bTopAddBoard_(self, board): > self.board = board > self.board.setPortBit_direction_('B', 255) > self.board.refreshDigitalPortValues() > > def send(self, val): > self.board.setPortBit_value_('B', 255-val) > self.board.refreshDigitalPortValues() > > class BoardControl: > """Instantiate the BoardContainer and provide a more pythonic > interface > > Ultimately, this should implement a standard Parallel Port API""" > board = None > > def __init__(self): > # Cocoa objects are constructed differently... > self.board = BoardContainer.alloc().init() > BTopBoard.setBTopPrimaryObserver_(self.board) > BTopBoard.allocBTopObserver() > > # # try writing a function dispatch to catch undeclared funcs... > see > # # what's going on! > # def __getattr__(self, name): > # def handler(*args, **kwargs): > # print '*name*', name > # print '*args*', args > # print '*kwargs*', kwargs > # return handler > > def send(self, val): > self.board.send(val) > > > > > > > > From: "Craig Marshall" <craig9(a)gmail.com> > Date: 19 Ιουλίου 2008 9:16:53 ΠΜ GMT+01:00 > To: pythonmac-sig(a)python.org > Subject: Re: [Pythonmac-SIG] PyObjC tutorial without Xcode > > > Hi all again, > >> Below my signature is a sample script demonstrating a really >> minimal use of >> pyobjc. This is meant to be run from the command line, and uses >> the BTop2 >> framework from Perfectly Scientific. You can download that >> framework for >> free, but it won't do much if you don't have the hardware! > > Thanks for sending the above dav, I think I'm more interested in > trying to get a very basic GUI up and running, which from the look of > it your script doesn't handle.. > > I tried another tactic. I went through all the example folders that > the xcode 3.1 installation put on my hard drive > (/Developer/Documentation/Python/PyObjC/tutorial/ specifically) and > found again the official pyobjc tutorial. My new tactic is to start > with the final piece of code there (step 12), build and run it and > then play with it until I know how it works. > > The problem is, when I build it and run it (out of the box!), it > doesn't work (cue hair-pulling sounds). I open a terminal, tell it to > build (python setup.py py2app), then tell it to run (open > dist/CurrencyConverter.app), and it gives me a dialog box with an > error inside: > > CurrencyConverter Error > An unexpected error has occured during excution of the main script > ImportError: No module named Foundation > > Open Console or Terminate > > So - I'm beginning to think either these are the useless errors that > dav talked about and that I need to somehow shoe-horn the useful > exception code into the py2app build instructions, or that it really > can't find the Foundation module. I would have thought py2app could > find and insert the bits and pieces it needs just from the import > statements, or do I have to declare that I want to use Foundation in > the setup.py somehow? > > A third possibility is that I've somehow broken my setup - how else > could a tutorial that came with the latest xcode not work out of the > box? > > I'd be very grateful if someone can point me in the direction of at > least a very small working pyobjc GUI app that works out of the box > with modern software .... > > Craig > > >

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PyObjC tutorial without Xcode
by Craig Marshall July 19, 2008

July 19, 2008

Hi, I am familiar with python already, and I am familiar with the mac as a user, but otherwise have no mac development experience. I'm keen to learn pyobjc and write native mac/python GUI apps. I'm currently having problems with outdated-ness and inaccuracies with both tutorials* I can find on PyObjC, and I think it could be simpler if I could find a tutorial that didn't involve Xcode (and the xcode python support seems spotty). Can anyone point me in the right direction please? I'm happy to use a plain old text editor and run/debug from the command line, and also I'd rather leave obj-C alone if possible. I accept that I'll need to use interface builder (which seems like a great app, anyway). Is this possible? If so - pointers would be gratefully received. Thanks, Craig Marshall * (http://pyobjc.sourceforge.net/documentation/pyobjc-core/tutorial/index.html and http://developer.apple.com/cocoa/pyobjc.html)

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Mac IDLE Fonts? (-or- I guess I need glasses.)
by Nate July 18, 2008

July 18, 2008

I've been trying to increase the font size inside IDLE. The documentation refers to an "Options menu" that seems to be eluding me in the Mac flavor of IDLE. Could someone please help me?

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