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

NSDistributedNotificationCenter
by Mike Covill Nov. 9, 2007

Nov. 9, 2007

I wanted to try using the NSDistributedNotificationCenter to pass messages between two separate python programs running simultaneously, so to learn about doing this I created this class: FILE: listener.py ------------------------------------------------------------------------ ------------------------- import Foundation class GetNotes(object): def __init__(self): '''register for an NSNotification''' nc = Foundation.NSDistributedNotificationCenter.defaultCenter() nc.addObserver_selector_name_object_(self, 'getMyNotes:', 'myNote', None) def getMyNotes_(self, note): print 'got a note!:', note.object ------------------------------------------------------------------------ ------------------------- then I created an instance of this class and tried sending a notification via the command line, expecting to see a print statement that the notification was received: import Foundation as F import listener gn = listener.GetNotes() nc = F.NSDistributedNotificationCenter.defaultCenter() nc.postNotificationName_object_('myNote', None) So far, no such luck. Any suggestions? Thanks, Mike

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Having a problem to install PyObjC 2.0 to Leopard
by Seungchan Oh Nov. 8, 2007

Nov. 8, 2007

Hello, I'm trying to install PyObjC 2.0 by "python setup.py bdist_mpkg --open" I got the source code from http://svn.red-bean.com/pyobjc/tags/r200-leopard . I got an error message related with "PPC", but I'm using Macbook Pro, so I deleted some portion of setup.py related with PPC. The error message is 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/objc-runtime-compat.m -o build/temp.macosx-10.3-fat-2.5 /Modules/objc/objc-runtime-compat.o -DPyObjC_STRICT_DEBUGGING -DMACOSX -no-cpp-precomp -Wno-long-double -g -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/objc-runtime-compat.m: In function 'PyObjC_SetupRuntimeCompat': Modules/objc/objc-runtime-compat.m:850: error: 'class_addIvar' undeclared (first use in this function) Modules/objc/objc-runtime-compat.m:850: error: (Each undeclared identifier is reported only once Modules/objc/objc-runtime-compat.m:850: error: for each function it appears in.) Modules/objc/objc-runtime-compat.m:851: error: 'class_addProtocol' undeclared (first use in this function) Modules/objc/objc-runtime-compat.m: In function 'PyObjC_SetupRuntimeCompat': Modules/objc/objc-runtime-compat.m:850: error: 'class_addIvar' undeclared (first use in this function) Modules/objc/objc-runtime-compat.m:850: error: (Each undeclared identifier is reported only once Modules/objc/objc-runtime-compat.m:850: error: for each function it appears in.) Modules/objc/objc-runtime-compat.m:851: error: 'class_addProtocol' undeclared (first use in this function) lipo: can't figure out the architecture type of: /var/folders/+w/+wei-YpVFdGoV29uK3G3x++++TI/-Tmp-//ccTkn9C3.out error: command 'gcc' failed with exit status 1 Would you give some hit for me please? TIA, SC

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Python TkAqua, Tkinter bug
by davelist＠mac.com Nov. 7, 2007

Nov. 7, 2007

I am not certain where the problem is or who to report it to, but there is a bug in TkAqua, Tkinter, or possibly OS X's windowing system. I am using a simple module on top of Tkinter for teaching an intro programming course. When I click the mouse in the Tkinter window, it often reports the wrong coordinates for the click most of the time. If I use idle and first click on the Tk Console window and then in the graphical window it seems to work. If I don't click in the Tk Console window or start Python from the Terminal, it almost always reports wrong values. I am running Leopard now and tried both the built-in Python 2.5 and installing the version from python.org. Some of my students who are using Tiger report the same issue - I don't recall problems last year when using this on Tiger, but it's possible. On Windows, the coordinates are always correct. The graphics.py module built on top of Tkinter is available at: http://mcsp.wartburg.edu/zelle/python/ A simple example that shows the problem is: from graphics import * win = GraphWin('test', 800, 800) pt = win.getMouse() print pt.getX(), pt.getY() After clicking in the top left corner, it is clearly the wrong answer (it should be near 0, 0 depending on how accurate your click is). Any ideas on where the problem is, who to notify, etc.? Thanks, Dave

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Re: [Pythonmac-SIG] [Numpy-discussion] Problem with numpy on Leopard
by Christopher Barker Nov. 6, 2007

Nov. 6, 2007

Robert Kern wrote: >> The problem will arise for every package, not only numpy, so Apple >> fixing this is the best solution IMHO. > > It's unlikely they are going to. If they put that stuff there, it's because they > are using it for something, not as an (in)convenience to you. I don't recommend > using the Python.framework in /System for anything except for distributing > lightweight .apps. AARRGG! This has come up before, when IBM was putting python in systems for some reason. Also, anyone remember RedHat, when upgrading python all their stuff would break. The problem there was that they refused, for some unknown reason, to specify a python version in their #! lines, nor did they specify a path (i.e., they used /usr/bin/env python) -- so you couldn't change the default python without all of RedHat's utilities breaking. The issue here is that if Apple had put site-packages on the path before their Extras dir, then when someone did something like install an upgrade to numpy (what a good idea) there is a chance that some Apple-supplied utility that relies on numpy would break. Hence Roberts solution: treat the Apple Python as a system only tool, only to be added to by Apple themselves. I guess that's OK, but it's really silly that it has to be that way. The solution: support versioning of packages in python! This came up some years ago, when wxPython developed a versioning system -- it would have made much more sense for their to be a standard way to do it, but the core folks on python-dev didn't see the point. oh well. The way I see it, python is a very good, robust, general purpose tool. It's a great thing for OS suppliers to provide python for system and users use -- I'd love to see it treated as other system libraries and utilities are, but to do that, there must be a versioning system for packages -- so Apple can use the version they installed, and a user can install and upgrade along side it, and not break anything. It's analygous to shared libraries -- it's insane to use shared libs without versions - we'd have to statically link everything. Having to install all of Python, and all those packages because you want to upgrade numpy just seems crazy. </rant> Sorry about that! -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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working around versions
by David Worrall Nov. 6, 2007

Nov. 6, 2007

Hi All, We're doing some work around different versions of Python on OSX (and what's in their respective site-packages directory), and I was wondering: Given that we can pick up the the version number of the current instantiation using sys.version, is there a direct way of computing the locating values for x and y in '/Library/Frameworks/Python.framework/Versions/Current/lib/pythonx.y/' other than through concatenating the above string with a splice of sys.version? thanks, David _________________________________________________ experimental polymedia: www.avatar.com.au Sonic Communications Research Group, University of Canberra: creative.canberra.edu.au/scrg/

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Leopard PyObjc & Quartz
by Uliano Guerrini Nov. 6, 2007

Nov. 6, 2007

Hello, If I run the Examples in /Developer/Examples/Python/PyObjc/Quartz/... building them from terminal with py2app the work as expected. If I create a new project in Xcode with the any template Cocoa Python Application and add in any file a line with import Quartz then the applicatons stops working (it hangs jumping in the dock) and I can read in the console [Session started at 2007-11-06 14:35:27 +0100.] _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL. 2007-11-06 14:35:28.430 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.431 poppo[864:10b] *** Break on _NSLockError() to debug. 2007-11-06 14:35:28.433 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.434 poppo[864:10b] *** Break on _NSLockError() to debug. 2007-11-06 14:35:28.439 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.439 poppo[864:10b] *** Break on _NSLockError() to debug. 2007-11-06 14:35:28.443 poppo[864:10b] NSInternalInconsistencyException - Error (1002) creating CGSWindow 2007-11-06 14:35:28.447 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.447 poppo[864:10b] *** Break on _NSLockError() to debug. 2007-11-06 14:35:28.449 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.449 poppo[864:10b] *** Break on _NSLockError() to debug. 2007-11-06 14:35:28.450 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.450 poppo[864:10b] *** Break on _NSLockError() to debug. 2007-11-06 14:35:28.451 poppo[864:10b] *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x1f8a150> '(null)') unlocked when not locked 2007-11-06 14:35:28.452 poppo[864:10b] *** Break on _NSLockError() to debug. How am I supposed to use Quartz with pyobjc? (if it is possible within xcode) Uliano

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Leopard python architectures in setup.py
by William Kyngesburye Nov. 5, 2007

Nov. 5, 2007

(Is it OK to ask about Apple's Leopard Python 2.5?) I'm a little confused about the 64bit-ness of Apple's Python 2.5. I see that the framework is, but the python executable is only universal 32bit. The modules (lib/python2.5/lib-dynload) and extras are a mix of 64bit and non-64bit, I presume because some depend on Carbon, which is not 64bit). When I build a package with setup.py, it always seems to build universal non-64bit, even though I've checked that the extras that it depends on (numpy) are 64bit-capable. Is there a way to get setup.py to build 64bit? I'm just building a package from source, and don't really know much about developing python extensions. ----- William Kyngesburye <kyngchaos*at*kyngchaos*dot*com> http://www.kyngchaos.com/ "I ache, therefore I am. Or in my case - I am, therefore I ache." - Marvin

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64-bit support
by has Nov. 4, 2007

Nov. 4, 2007

Hi folks, Currently working on the next appscript release and wondering if anyone has any thoughts on whether or not I should prioritise 64-bit support (which means reworking its various C extensions to eliminate their dependence on Python's Carbon extensions)? How important is providing 64-bit support at the moment? Thanks, has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org

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Re: [Pythonmac-SIG] Python control/integration of a Cocoa/Quicktime application?
by has Nov. 3, 2007

Nov. 3, 2007

Darran Edmundson wrote: > I have a python program on the Mac that determines, among other > things, the screen location. The OS X developers are going to > write a full-screen Cocoa application [...] The question then: how > to join these two codes? > 1) Get the Mac guys to write their application as a library that > can be wrapped in pyObjC and invoked by my python program. In this > scenario, the result is only one process/program with no network > issues. > > 2) Add networking code to both the python and cocoa apps in order > to communicate (binary socket, XML over http, Bonjour, etc.). Easy > in python via Twisted, no doubt less so in cocoa. Jack's already given advice on #1 and suggested embedding Python as a third option. As for the IPC option, you're pretty well covered there too. The two high-level approaches I'd recommend investigating are: 1. Apple events using appscript/aem on the client side and OS X's Cocoa Scripting framework on the server side (although there are other options available as well). 2. Cocoa's Distributed Objects system, using PyObjC on the client side. HTH has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org

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more tab completion issues.
by Michael VanLandingham Nov. 2, 2007

Nov. 2, 2007

Following along the whole rlcompleter/readline/editline thread, I noticed today that when I do tab completion on a class, I get everything listed twice.Happens in python and ipython. Example: >>> i = int(5) >>> i 5 >>> i.__ Display all 121 possibilities? (y or n) i.__abs__ i.__abs__ i.__add__ i.__add__ i.__and__ i.__and__ i.__class__ i.__class__ ...etc. I don't see duplicates if I do 'dir(i)' Is anyone else seeing this behavior? Any ideas why? Something in the rlcompleter or readline... Seems to occur with any class. -Michael

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