🌐 Mailman 3 August 2011 - Pythonmac-SIG - python.org

Py2App-Lion-MySQLdb Error Msg
by precipice.development Aug. 16, 2011

Aug. 16, 2011

Hello First, my apologies for not checking my Thunderbird email settings initially. Looking for some clues as to deciphering the following error: ImportError: dlopen(/Users/jph/Public/hello.app/Contents/Resources/lib/python2.7/lib-dynload/_mysql.so, 2): Symbol not found: _strnlen 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Referenced from: /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.dylib Background Did a Hello World type test app on Lion. Used py2app to bundle it into an OSX app. Works fine. Copied over to a fresh install of Snow Leopard 10.6.8 and works fine. Bundle is standalone. Now, added MySQLdb and made a database connection on Lion - works as expected - result returned from simple query. MySQL database is on a third machine. Now copied bundle over to Snow Leopard machine (again a fresh install) and received the following error: 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Traceback (most recent call last): 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File "/Users/jph/Public/hello.app/Contents/Resources/__boot__.py", line 57, in <module> 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] _run('hello.py') 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File "/Users/jph/Public/hello.app/Contents/Resources/__boot__.py", line 54, in _run 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] execfile(path, globals(), globals()) 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File "/Users/jph/Public/hello.app/Contents/Resources/hello.py", line 9, in <module> 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] import MySQLdb 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File "MySQLdb/__init__.pyc", line 19, in <module> 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] ImportError: dlopen(/Users/jph/Public/hello.app/Contents/Resources/lib/python2.7/lib-dynload/_mysql.so, 2): Symbol not found: _strnlen 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Referenced from: /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.dylib 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Expected in: /usr/lib/libSystem.B.dylib 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] in /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.dylib 8/15/11 4:30:09 PM hello[716] hello Error 8/15/11 4:30:10 PM com.apple.launchd.peruser.501[102] ([0x0-0x2e02e].org.pythonmac.unspecified.hello[716]) Exited with exit code: 255 The key line seems to be ImportError: dlopen(/Users/jph/Public/hello.app/Contents/Resources/lib/python2.7/lib-dynload/_mysql.so, 2): Symbol not found: _strnlen 8/15/11 4:30:08 PM [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Referenced from: /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.dylib Python on Lion is from MacPorts. Python 2.7.1 (r271:86832, Jun 16 2011, 16:59:05) [GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin Type "help", "copyright", "credits" or "license" for more information. /opt/local/bin/python: Mach-O 64-bit executable x86_64 MySQLdb is also from MacPorts mysql5/mysql/libmysqlclient.16.dylib: Mach-O 64-bit dynamically linked shared library x86_64 mysql5/mysql/libmysqlclient_r.16.dylib: Mach-O 64-bit dynamically linked shared library x86_64 Py2App script setup.py from setuptools import setup setup( app = ['hello.py'], options = { 'py2app': { 'argv_emulation': 0, #'plist': { #plist'LSPrefersPPC': False, #}, 'includes': ['PySide.QtCore', 'PySide.QtGui', 'PySide.QtWebKit', 'PySide.QtNetwork', 'MySQLdb'], 'site_packages': 1 } }, data_files = ['copying.txt'], setup_requires = ['py2app'], ) Does anyone have any ideas of how to correct this. Cheers PrecipiceDev

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Py2App - MySQLdb - OSX Lion
by precipice.development Aug. 15, 2011

Aug. 15, 2011

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Re: [Pythonmac-SIG] using py2app with scipy
by Michael Schmidt Aug. 13, 2011

Aug. 13, 2011

> I am running python 2.7.2 from python.org on Snow Leopard, matplotlib > 1.0.1 built from source, py2app 0.6.4. Maybe updating your version of > matplotlib solves the problem. Got it to work after installing python2.7 and building numpy, scipy and matplotlib from the source to run in 64 bit mode. Thanks for the suggestion! As an aside, it's a real pain in the arse to install all that from source....see http://blog.hyperjeff.net/?p=160 for specific instructions -Mike

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translate applescript to appscript
by Adam Morris Aug. 12, 2011

Aug. 12, 2011

I have an AppleScript snippet that I need translating to python appscript; too low-level for ASTranslate to handle: tell application "Finder" "/Users/brainysmurf/Desktop" as POSIX file as alias end tell I'm writing a wrapper class for the Finder and want to be able to pass /path/to/doc to its methods and so I need a way to convert from paths to file objects that the Finder can do things with. Reading the docs I tried: appscript.app("Finder").AS_newreference(appscript.app.elements('psxf').byname('/Users/brainysmurf/Desktop')) But I get an error saying that elements is not an attribute. I get the same deal with appscript.app('Finder'). Using appscript 1.0.0 Help? -Adam

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Re: [Pythonmac-SIG] using py2app with scipy (Russell E. Owen)
by Michael Schmidt Aug. 12, 2011

Aug. 12, 2011

Thanks for the quick response. Unfortunately I can't get this to work, now for other reasons. I've attached the updated setup.py file and my simple test program (test_app.py) to this email. The problem seems to lie with pytz: ] python setup.py py2app ....(lots of byte-compiling messages here).... ] byte-compiling /Users/maschmidt/test_app.py to test_app.pyc ] error: cannot copy tree '/Library/Python/2.6/site-packages/pytz-2011h-py2.6.egg/pytz/zoneinfo': not a directory I did some googling and found that this is a persistent problem with matplotlib, but none of the work-arounds I tried worked. I tried editing the recipe/matplotlib.py file to read 'tzinfo' instead of 'zoneinfo' and that didn't work, and I tried explicitly including pytz and letting pytz.zoneinfo = pytz.tzinfo in my setup.py file. Something else seems to be askign for pytz.zoneinfo. I'm using python 2.6.1, scipy 0.9.0 dev, numpy 2.0.0 dev, matplotlib 1.0.0, py2app 0.6.3 I'd love to know if anyone has successfully gotten py2app to bundle a stand-alone app using numpy, scipy and matplotlib, and if so, could they please send me a sample script? Thanks a bunch, Michael

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using py2app with scipy
by Michael Schmidt Aug. 11, 2011

Aug. 11, 2011

Hi Everyone, I'm trying to create a stand-alone app for some scientific analysis code using py2app, and I'm running into problems when I try to include scipy in my application (same goes for matplotlib). As you can guess, this is a necessary pre-requisite for my app to be at all useful. The documentation on the py2app site is a couple of years old now, and mailing list entries about the subject are from 2007, so I'm really hoping someone out there in the intertubes has succesfully packaged these into a stand-alone program. The terminal commands look just fine when I do: python --make_setup test_app.py python setup.py py2app The problem only arises when I try to actually run the application. I get an error window stating "test_app Error" and nothing else. My sample code is attached. I'm using Max OS 10.6.8, python version 2.6.1, numpy version 2.0.0, scipy version 0.9.0 and matplotlib version 1.0.0 My goal is to create a program that future grad students in my lab will be able to re-use - any help here would be much appreciated, and would further the progress of scientific inquiry (a lil' bit). Thanks a bunch! Michael

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Lambdas and closures
by Chris Weisiger Aug. 10, 2011

Aug. 10, 2011

There's probably a more generic mailing list I could send this to, but I'm on too many lists as it is...hope y'all don't mind. Anyway, I often find myself in the situation of "I have a list of objects. I want to make a corresponding list of functions that operate on those objects". So I write up something like this: funcList = [] for item in objectList: funcList.append(lambda input: item.actOn(input)) But this doesn't work, because Python lazily binds the "item" variable here. As a simple example: >>> foo = [lambda: x + 2 for x in range(4)] >>> [f() for f in foo] [5, 5, 5, 5] There's a workaround to force Python to make a copy of the variable with its current value: use it as an optional argument to the lambda: >>> foo = [lambda x = x: x + 2 for x in range(4)] >>> [f() for f in foo] [2, 3, 4, 5] But that gets ugly fast if I have any level of nested loops involved in my lambda creation. I had a situation yesterday in which I would have had to have three variables bound using that method to keep Python using the correct value of the variable: lambda a = a, b = b, c = c: a.b(c). That sent me to the other workaround I know of, which is to just define a new function that accepts the (three) inputs and returns a lambda: def makeFunc(a, b, c): return lambda: a.b(c) This is still pretty painful though. Is there some way to get my original example to work as it intuitively should? Or some equivalent elegant alternative? That is, when a lambda is created, it should include a closure of all scoped variables with their values as they were at the time of creation of the lambda. Whereas right now as far as I can tell it just includes references to those variables, and if you should happen to change them between creating and calling the lambda, then you're out of luck. The actual use case I'm dealing with here is exposing various code objects in a GUI; I need to create a button (or text field, or menu) and then react to the user interacting with that object by calling a function. -Chris

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"elif" problem
by Doychin Stanchev Aug. 10, 2011

Aug. 10, 2011

Hi guys, I am really new to the programming and I decided to start with python. I found a book called "beginning python" and started to learn, but I had a problem with the command "elif". I am running 10.7 and python 2.72. Here is my problem: >>> milk_price = 1.50 >>> if milk_price < 1.25: print "Buy two cartons of milk, they're on sale" elif milk_price < 2.00: SyntaxError: invalid syntax I'll appreciate very much your help, Thank you, Doychin

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OS X 10.7 Lion, py2app 0.6.3, argv-emulation, wxPython
by Florian Höch Aug. 5, 2011

Aug. 5, 2011

In 10.7, some functionality of the Carbon libraries is only available in 32-bit mode, but py2app created binaries run in 64-bit mode on Lion. In my case wx and py2app's argv-emulation feature needed Carbon functionality that isn't available in 64-bit mode, so I did work around this by replacing the binaries with 32-bit ones after the app was created. First, I used the official python.org Python 2.7 x86-64/i386 installer. Then I built my app with the 32-bit python: python2.7-32 setup.py p2app Then I replaced the binaries in the app: cp /Library/Python/2.7/site-packages/py2app-0.6.3-py2.7.egg/py2app/apptemplate/prebuilt/main-i386 /PATH/TO/APP/APPNAME.app/Contents/MacOS/APPNAME cp /Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7-32 /PATH/TO/APP/APPNAME.app/Contents/MacOS/python Just thought I'd share my findings. Regards -- Florian Höch

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Re: [Pythonmac-SIG] Pythonmac-SIG Digest, Vol 100, Issue 1
by Andrew Wu Aug. 2, 2011

Aug. 2, 2011

Hi Mike, See if this will help: 1. Grab the latest stable release from the repository via svn: % svn checkout http://svn.red-bean.com/pyobjc/trunk This will locate the source tree in the current directory under a new subdirectory 'trunk' 2. cd into trunk/pyobjc 3. Make a backup copy of 02-develop-all.sh 4. Edit 02-develop-all.sh and substitute 'python' for 'python2.5' (or the absolute path to your custom install of python) 5. Run the shell script 02-develop-all.sh (I believe that by default pyobjc is compiled with debugging symbols enabled) 6. When the script has completed, add the path to the pyobjc trunk's subdirectory pyobjc to PYTHONPATH: export PYTHONPATH=$PYTHONPATH:/path/to/pyobjc/trunk/pyobjc (At least this is how I got a downloaded copy of pyobjc to work for me with a custom build of python ...) Andrew On Tue, Aug 2, 2011 at 3:00 AM, <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. Still Unable to Install PyObjC (Mike) > > > ---------- Forwarded message ---------- > From: "Mike" <smartmike1(a)gmail.com> > To: <pythonmac-sig(a)python.org> > Date: Mon, 1 Aug 2011 17:23:43 -0400 > Subject: [Pythonmac-SIG] Still Unable to Install PyObjC > Hi, > > I posted about a month ago and am giving this another shot. Trying to ultimately get my app built with Py2app on my Mac (built this on a different Mac running Leopard in the past). Due to problems I had with Python 2.6, I installed Python 2.7 from python.org. I am now trying to install PyObjC which is needed for my application. I have tried using both easy_install and checking out the source and running setup.py. Either way, I get the following error: > > > running install > > running bdist_egg > > running egg_info > > writing requirements to pyobjc.egg-info/requires.txt > > writing pyobjc.egg-info/PKG-INFO > > writing top-level names to pyobjc.egg-info/top_level.txt > > writing dependency_links to pyobjc.egg-info/dependency_links.txt > > writing manifest file 'pyobjc.egg-info/SOURCES.txt' > > installing library code to build/bdist.macosx-10.3-fat/egg > > running install_lib > > warning: install_lib: 'build/lib' does not exist -- no Python modules to install > > creating build/bdist.macosx-10.3-fat/egg > > creating build/bdist.macosx-10.3-fat/egg/EGG-INFO > > copying pyobjc.egg-info/PKG-INFO -> build/bdist.macosx-10.3-fat/egg/EGG-INFO > > copying pyobjc.egg-info/SOURCES.txt -> build/bdist.macosx-10.3-fat/egg/EGG-INFO > > copying pyobjc.egg-info/dependency_links.txt -> build/bdist.macosx-10.3-fat/egg/EGG-INFO > > copying pyobjc.egg-info/requires.txt -> build/bdist.macosx-10.3-fat/egg/EGG-INFO > > copying pyobjc.egg-info/top_level.txt -> build/bdist.macosx-10.3-fat/egg/EGG-INFO > > copying pyobjc.egg-info/zip-safe -> build/bdist.macosx-10.3-fat/egg/EGG-INFO > > creating 'dist/pyobjc-2.4a0-py2.7.egg' and adding 'build/bdist.macosx-10.3-fat/egg' to it > > removing 'build/bdist.macosx-10.3-fat/egg' (and everything under it) > > Processing pyobjc-2.4a0-py2.7.egg > > removing '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pyobjc-2.4a0-py2.7.egg' (and everything under it) > > creating /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pyobjc-2.4a0-py2.7.egg > > Extracting pyobjc-2.4a0-py2.7.egg to /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages > > pyobjc 2.4a0 is already the active version in easy-install.pth > > Installed /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pyobjc-2.4a0-py2.7.egg > > Processing dependencies for pyobjc==2.4a0 > > Searching for pyobjc-framework-ServiceManagement==2.4a0 > > Reading http://pypi.python.org/simple/pyobjc-framework-ServiceManagement/ > > Reading http://pyobjc.sourceforge.net > > No local packages or download links found for pyobjc-framework-ServiceManagement==2.4a0 > > error: Could not find suitable distribution for Requirement.parse('pyobjc-framework-ServiceManagement==2.4a0') > > > > I'm running Lion, upgraded from Snow Leopard, but I had this same problem on SL as well. > > > > Can anyone help with this? > > > > Thanks, > > Mike > > unsubscribe: http://mail.python.org/mailman/options/Pythonmac-SIG >

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