🌐 Mailman 3 July 2005 - Pythonmac-SIG - python.org

Solid GUI toolkits for Mac?
by Jon Rosebaugh July 27, 2005

July 27, 2005

I'm wondering how many of the many GUI toolkits for python play really well with Mac OS X, including actual native look, instead of just an Aqua "theme" that doesn't look quite right? I know of PyObjC (which scares me, because Interface Builder and Cocoa scare me; come on, a four-page tutorial with dozens of methods to write just to add a freaking toolbar? This is 2005, not 1995, Apple), PyFltk (which works, but the guy giving the compilation instructions admits he doesn't know much about python or compiling, which makes me a little hesitant to spend effort learning it), PySWT (which looks like it would do the job, but doesn't actually have any explicit Mac support yet, and also appears to not be very mature yet), and, um, that's what I've got. So. What are people using? (And if I've got the wrong impression of PyObjC, I'm happy to be enlightened.) -- Bloggity: http://blog.inklesspen.com/

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Detecting keystrokes during launch of application
by João Leão July 27, 2005

July 27, 2005

Hi, I'd like to know what's the best method to detect a keystroke during the launch of an application. I have a py2app application with argv emulation enabled and I need (if it's possible) to know if a certain keyboard key was pressed or not during initialization. Thanks for any help. João

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Errors with simple_plot in matplotlib: type is wrong for / operator?
by Louis Pecora July 26, 2005

July 26, 2005

I got my Python back up and running thanks to help from Bob Impolito and Robert Kern (site packages and .pth files and new system install). * I have installed wxPython and matplotlib. But when I run the simple_plot.py program: #!/usr/bin/pythonw from pylab import * figure(1) t = arange(0.0, 1.0+0.01, 0.01) s = cos(2*2*pi*t) plot(t, s) xlabel('time (s)') ylabel('voltage (mV)') title('About as simple as it gets, folks') grid(True) #axis([0,1,-1,1]) savefig('simple_plot') show() * I get this traceback: louispec% /tmp/501/Cleanup\ At\ Startup/1735220.command; exit Traceback (most recent call last): File "/Users/louispecora/Documents/Computer Info ƒ/Python ƒ/Matplotlib ƒ/Examples.Matplotlib/simple_plot.py", line 17, in ? savefig('simple_plot') File "/Library/Python/2.3/pylab.py", line 751, in savefig File "/platlib/matplotlib/figure.py", line 618, in savefig File "/platlib/matplotlib/backends/backend_wxagg.py", line 83, in print_figure File "/platlib/matplotlib/backends/backend_agg.py", line 432, in print_figure File "/platlib/matplotlib/backends/backend_agg.py", line 369, in draw File "/platlib/matplotlib/figure.py", line 498, in draw File "/platlib/matplotlib/axes.py", line 1361, in draw File "/platlib/matplotlib/axis.py", line 530, in draw File "/platlib/matplotlib/ticker.py", line 297, in set_locs File "/platlib/matplotlib/ticker.py", line 335, in _set_format TypeError: unsupported operand type(s) for /: 'array' and 'int' Exit 1 logout [Process completed] *This is deep in matplotlib. Anyone know what's happening? Here's what line 335 in ticker.py looks like (not sure if this helps since you'd probably have to know the code of matplotlib): # set the format string to format all the ticklabels locs = (array(self.locs)-self.offset) / 10**self.orderOfMagnitude+1e-15 But there's that / operator. -- Cheers, Lou Pecora Code 6362 Naval Research Lab Washington, DC 20375 USA Ph: +202-767-6002 email: pecora(a)anvil.nrl.navy.mil

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AppleEvents and AEPutParamDesc
by Phil Christensen July 25, 2005

July 25, 2005

So I'm in the process of trying to implement the BBEdit ODB suite functionality in a PyObjC app, and I've run into some weirdness, and I hope someone here might be able to help me. I've been hacking on the MiniAEFrame.py module that is distributed with python, and I've had success receiving the BBEdit's response (when a file is saved) through this script. All I did was add a call to the following function, just before the call to the _Test() constructor def openInExternalEditor(_filePath, _lnnum=0, _editor = '/ Applications/BBEdit.app'): from aem.send import Application import struct from Carbon.File import FSSpec SelectionRange = struct.pack('hhllll', 0, int(_lnnum)-1, 1,1,0,0) Application(_editor).event('aevtodoc',{'----':FSSpec (_filePath),'kpos':SelectionRange}).send() BBEdit opens the requested document, and when I save the file, this event prints to the console: AppleEvent ('R*ch', 'FMod') for <Carbon.File.Alias object at 0x3e2b0> Other args: {... which is definitely what I want. However, when I bring all this into my PyObjC app, I no longer seem to receive events properly. Obviously, I had to make some changes, since the MiniApplication class in the MiniAEFrame module also implements event handling for menus, about boxes, etc, and this is already taken care of by the PyObjC app. This is what my event loop looks like now: def eventLoop(): # we poll for apple events here got, event = Evt.WaitNextEvent(Events.highLevelEventMask, 1) if got: print 'got: ' + str(got) + ' event: ' + str(event) what, message, when, where, modifiers = event if what == MiniAEFrame.kHighLevelEvent: AE.AEProcessAppleEvent(event) elif hasattr(MacOS, 'HandleEvent'): MacOS.HandleEvent(event) else: print "Unhandled event:", event # an instance of the twisted python threadedselectreactor reactor.callLater(1, eventLoop) The event registration is taken care of by a trial subclass of MiniAEFrame.AEServer: class EventServer(MiniAEFrame.AEServer): def __init__(self): MiniAEFrame.AEServer.__init__(self) # these are more than necessary, but in an attempt to # mimic MiniAEFrame as much as possible self.installaehandler('aevt', 'oapp', self.other) self.installaehandler('aevt', 'quit', self.other) self.installaehandler('****', '****', self.other) def other(self, _object=None, _class=None, _type=None, **args): print 'AppleEvent', (_class, _type), 'for', _object, 'Other args:', args However, now this gets various events (usually things like the 'rapp' event when the app goes into the background, etc), but definitely nothing from BBEdit. I thought perhaps it was because the ODB specification says you should pass along a 'keyServerID' parameter to the 'odoc' event that signifies a 4-byte char OSType. I wasn't sure about how this works under OS X, but I set the 'CFBundleSignature' property to 'Phil' in the .app bundle's Info.plist, and tried the following when I sent the event: def openInExternalEditor(_filePath, _lnnum=0, _editor = '/ Applications/BBEdit.app'): from aem.send import Application import struct from Carbon.File import FSSpec SelectionRange = struct.pack('hhllll', 0, int(_lnnum)-1, 1,1,0,0) Application(_editor).event('aevtodoc',{'----':FSSpec (_filePath), 'kpos':SelectionRange, 'keyServerID':'Phil'}).send() but this constantly generates the following error: Traceback (most recent call last): [snipped cocoa-related garbage] File "/Users/phil/Workspace/InnerSpace/cocoa/client/dist/ controller.app/Contents/Resources/__boot__.py", line 47, in _run execfile(path, globals(), globals()) File "/Users/phil/Workspace/InnerSpace/cocoa/client/ controller.py", line 167, in ? openInExternalEditor('/tmp/test-12345') File "/Users/phil/Workspace/InnerSpace/cocoa/client/ controller.py", line 162, in openInExternalEditor Application(_editor).event('aevtodoc',{'----':FSSpec (_filePath),'kpos':SelectionRange, 'keyServerID':'Phil'}).send() File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/site-packages/aem/send/__init__.py", line 83, in event return self._Event(self._address, event, params, atts, resulttype, self._transaction, returnid, self._codecs) File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/site-packages/aem/send/send.py", line 87, in __init__ self._event.AEPutParamDesc(key, codecs.pack(value)) TypeError: OSType arg must be string of 4 chars I've tried everything at this point to get it to accept 'Phil', such as converting it to an int, or packing it into a 4-byte struct, but to no avail. In reality, that shouldn't even be necessary, as I grepped the Python source tree, and found that the only function that generates a TypeError with that string is in mactoolboxglue.c, and it should accept the string 'Phil': /* Convert a 4-char string object argument to an OSType value */ int PyMac_GetOSType(PyObject *v, OSType *pr) { if (!PyString_Check(v) || PyString_Size(v) != 4) { PyErr_SetString(PyExc_TypeError, "OSType arg must be string of 4 chars"); return 0; } memcpy((char *)pr, PyString_AsString(v), 4); return 1; } At any rate, sorry this email is so long, but any help would be appreciated. It'd be really great to get this external editor feature working... Incidentally, here are some relevant links: ODB Suite: http://www.barebones.com/support/develop/odbsuite.shtml MiniAEFrame.py: http://cvs.sourceforge.net/viewcvs.py/python/python/dist/src/Lib/ plat-mac/MiniAEFrame.py?rev=1.5&view=log Thanks in advance, -phil christensen

1 0

How to get traceback from PySol?
by skip＠pobox.com July 25, 2005

July 25, 2005

I have Brian Lenihan's bundled PySol installed on my laptop. A couple days ago it quit working. After getting most of the way through startup it quits with a dialog that reads: Internal errror. Please report this bug: exceptions.AssertionError (Quit) While the pull-down menus appear to work after that, nothing actually works. Running with the console open shows this error: PySol: pysolsoundserver module not found, sound disabled. but no traceback related to the assertion error. Is there some way to get a full traceback so I can debug this problem, or do I have to just reinstall PySol and hope it goes away? Thx, -- Skip Montanaro skip(a)pobox.com

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installing py2app
by Joancarles Casasin July 25, 2005

July 25, 2005

Hi, I'm trying to install py2app 0.2 and I get this error: """ (...) writing byte-compilation script '/tmp/tmpiw8kyG.py' /usr/bin/python -OO /tmp/tmpiw8kyG.py removing /tmp/tmpiw8kyG.py copying files for scheme doc error: cannot copy tree 'doc': not a directory """ And after that, nothing happened. I'm running the setup.py script from a Terminal window as specified in the readme file ("python setup.py bdist_mpkg --open "). Any clue? Excuse me if really basic question, newbie with this stuff. Many thanks, Joancarles

1 0

Problems building 2.3.5 source on MacOS X Tiger
by Bill Northcott July 24, 2005

July 24, 2005

I am trying to build Python 2.3.5 sources on MacOS X 10.4.2 using gcc-4. My reason for doing this is to get a Tkinter linked against Tk X11 including BLT. I ran into considerable problems with the main link which is Makefile.pre.in:370-371 which reads libtool -o $(LDLIBRARY) -dynamic $(OTHER_LIBTOOL_OPT) $(LIBRARY) \ -framework System @LIBTOOL_CRUFT@ I have checked that this seems to be the same in the current cvs. I had edited Modules/Setup after running configure to reflect the locations of my Tcl, Tk X11 and BLT libraries and headers. The compilation ran without problem although there are a very large number of warnings. My first attempt at the link failed because none of the Tcl/Tk/BLT symbols were being found. Adding $(LOCALMODLIBS) to the link line above solved this. I was then left with a number of missing symbols relating to printf functions such as _fprintf$LDBLStub. This seems to happen because these functions in Tiger with gcc-4.0 are actually macros which translate into symbols in the System stub library which is not included on the link line. A little Googling revealed the underlying cause as trying to use libtool to link the libraries. The right way being to use the gcc compiler driver, which automatically includes all the necessary system libraries. I eventually succeeded with a command that looks like this: $(CC) -o $(LDLIBRARY) -dynamiclib $(OTHER_LIBTOOL_OPT) -all_load $(LIBRARY) $(LOCALMODLIBS) \ @LIBTOOL_CRUFT@ Apart from using the compiler driver the other changes are: -dynamiclib the appropriate option for the driver -all_load without this, ld just searches the libPythonXX.a for unresolved symbols from previous objects of which their are none. - all_load includes all objects in the static library into the link, which is what is needed. The reference to the System framework is no longer required because the compiler driver looks after that. This change enabled the make stage to complete. I am currently stuck with one of the apps not building properly with 'make frameworkinstall'. The framework appears to have built correctly. Bill Northcott

2 7

Dev Tools needed?
by William K July 24, 2005

July 24, 2005

I was looking at the MacPython installer (2.4.1) and it's not clear if Xcode is needed. Other than not being able to build modules from C source, I noticed one bit that is installed in the System python framework, PantherPythonFix, that has some reference to GCC. There's nothing in the installer to keep it from installing on a system without Xcode, but will it run without it, as long as one doesn't need to compile C modules? I ask because I want to package some programs that include built C modules, and some Mac users might not want to install Xcode, just use prebuilt modules in their Python scripts. ----- William Kyngesburye <kyngchaos(a)kyngchaos.com> http://www.kyngchaos.com/ All generalizations are dangerous, even this one.

2 1

Can't get re-installed python to recognize old paths.
by Louis Pecora July 22, 2005

July 22, 2005

After a lot of hair pulling (long story) I re-installed OS X 10.3 (archive and install) and then upgraded to 10.3.9. Python seems to work and other problems seem to be gone, but when I try to import my original modules it can't find them. I looked in the folder .MacOSX and see that Enviroment.plist is still there and it has the original paths that once worked (two weeks ago). Here it is: *<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>PYTHONPATH</key> <string>/users/louispecora/Code/python/general:/users/louispecora/Code/python/stats:/users/louispecora/Code/python/stats/BayesProb:/users/louispecora/Code/python/time_series:/users/louispecora/Code/python/plotwindow:/Library/Python/2.3/:/users/louispecora/Code/AddedPackagesfiles/:</string> </dict> </plist> *So I'm stumped as to why Python can't find modules in the folders listed in Enviroment.plist. I haven't changed any folder names. I seem to remember only needing to mess with Enviroment.plist to establish paths. Am I forgetting something? Thanks for any ideas. Thanks also to Bob I. and Robert Kern for their patience as I try to bring my system back to health and get python up and running. -- Cheers, Lou Pecora Code 6362 Naval Research Lab Washington, DC 20375 USA Ph: +202-767-6002 email: pecora(a)anvil.nrl.navy.mil

3 2

Trouble installing CVS module kinds
by Louis Pecora July 21, 2005

July 21, 2005

I installed 2.4.1 from Bob (easy), but it was missing Numeric. I installed that, but that was missing the "kinds" module which my code imports. Robert Kern kindly informed me that kinds is no longer a part of Numeric, but I could get it from CVS and he showed me how (which is good since I haven't a clue when things get this deep in the modules distribution and installation). However, after getting kinds and running setup.py I get the following message: /tmp/501/Cleanup\ At\ Startup/57993.command; exit Traceback (most recent call last): File "/Users/louispecora/Code/python/AddedPackagesfiles/kinds/Test/test.py", line 3, in ? import unittest, kinds, sys File "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/kinds/__init__.py", line 2, in ? from kinds import * File "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/kinds/kinds.py", line 2, in ? import _kinds ImportError: Failure linking new module: : dyld: /usr/local/bin/python Undefined symbols: /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/kinds/_kinds.so undefined reference to ___gxx_personality_v0 expected to be defined in a dynamic image Exit 1 logout [Process completed] It appears that Python is finding kinds, but something else (involving gxx whatever?) is missing. Anyone know what's happening and, better, how to get it working? Thanks for any help. -- Cheers, Lou Pecora Code 6362 Naval Research Lab Washington, DC 20375 USA Ph: +202-767-6002 email: pecora(a)anvil.nrl.navy.mil

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