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

Authentication via python?
by Benjamin Schollnick Aug. 21, 2009

Aug. 21, 2009

Folks, I¹m working on some time machine scripting... In a gist, there is a .Backup.log file that I want to access via readline & python.... >From the MOSX gui, it appears some of the files require root access (eg. Authentication dialog pops up). Now, I am using the applet maker to compile the python to a GUI stub, so I can¹t SUDO the python script... Is there some method that I can use to authenticate via the python script internally? I¹m in the middle of a google search on this, but I am having no luck at refining my search phrase currently (Macintosh python authenticate)... - Benjamin

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App distribution with eggs
by David Woods April 27, 2009

April 27, 2009

I'm updating my development tools for an application I've been distributing for a few years now. One of my critical imports, MySQLdb, gets built as an egg under by new system. In the past, I've used BundleBuilder for making my distributable app for the Mac and it's worked admirably. I can't figure out how to get BundleBuilder to include the MySQLdb egg, (I get "ImportError: no module named MySQLdb") and it looks to me like py2app doesn't support eggs either. My (perhaps inept) Googling hasn't revealed any likely suspects. What method do folks recommend for building distributable apps which have dependencies on eggs? David

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PyGTK on OSX?
by Chris Van Bael March 11, 2009

March 11, 2009

Hi all, I'm trying to get our program to run on OSX (see www.schoolsplay.org) We use GTK and Pango for RTL support and better font rendering. I installed the framework from http://www.gtk-osx.org/, but PyGTK doesn't seem to be installed. Does anybody have an idea where I can get a binary build of PyGTK? Or where I can find building instructions that don't need DarwinPorts? Any particular things I have to keep in mind while making an Application Bundle with GTK on OSX? Thanks, Chris

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Re: [Pythonmac-SIG] Py2App and PyQT
by kelsolaar_fool＠hotmail.com Jan. 23, 2009

Jan. 23, 2009

Ok the QtCore.so problem got solved by adding this line into the __boot__.py : sys.path = [os.path.join(os.environ['RESOURCEPATH'], 'lib', 'python2.5', 'lib-dynload')] + sys.path Now I'm facing another really annoying problem : I need at some point to load jpeg images into my program and Qt jpeg support is done from a plugin library : libqjpeg.dylib under MacOsX and qjpeg4.dll on Windows. On Windows in order to make my packaged program use it (compiling with py2exe) I include a qt.conf file at the root of my software with this as content : [Paths] Prefix = ./PyQt4 Binaries = . and the dll is here : PyQt4\plugins\imageformats\qjpeg4.dll This is working fine, I tried the same or a lot of different locations and combinations on MacOsX and everything failed, resulting in blank thumbnails in my program. That is really annoying and can really compromise the release of it on Mac. Hope someone as an idea ? Thanx, Thomas

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How to install latest 2.5 in OS X 10.4?
by Joe Strout Jan. 7, 2009

Jan. 7, 2009

I'm still struggling to build Mac apps (based on wxPython and MySQL) that work on any 10.4 or 10.5 machine. I understand that the general picture is: 1. Install the latest python.org Python release on 10.4 (make sure it's a universal binary). 2. Install setuptools (including py2app). 3. Install MySQL. 4. Build and install MySQLdb. 5. Use py2applet to generate a setup.py file. 6. Tweak setup.py as needed, then use it (with the py2app command) to build an app. 7. Cross fingers and pray to favorite deity. We've gotten most of this mostly working on 10.5 Intel, but now to make a properly portable app, I need to go back and do it all again on a 10.4 machine. I'm stuck on step 1. <http://www.python.org/download/mac/> says "On Mac OS X 10.3.9 or 10.4, download and run an installer for the latest version. This is a Universal binary version of Python that runs natively on PPC and Intel systems." But the link ( to <http://www.pythonmac.org/packages/>) actually claims to contain "Mac OS X 10.4 (Python 2.4.1 framework build, PPC ONLY)". This is neither the latest version, nor a Universal binary. (Nor does it actually appear to be Python -- instead it looks like a collection of four different extension sets plus a "TigerPython24Fix". So... if following the directions on python.org isn't going to work, how exactly should I get the latest 2.5 framework release of Python installed on 10.4? Thanks, - Joe

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py2app + pygame: how to exclude pygame icon?
by Joel Gluck Dec. 30, 2008

Dec. 30, 2008

Hi all, Am using py2app and hitting this problem: py2app's built-in recipe for pygame is causing the pygame icon to appear when I run the app from the dock. It goes something like this: 1) The icon file I provide for my app appears in the dock by default, thanks to python setup.py py2app --iconfile my_icon.icns. 2) However, when I click on that icon in the dock, it briefly changes to the pygame icon (snake with game controller in mouth) and bounces up and down, before my app runs. 3) I tried adding a call at the start of my app to pygame.display.set_icon() to override the pygame icon with my own icon -- this causes the bouncing pygame icon to change back to my app's icon immediately before my app takes over the screen. However, I still see the pygame icon for a moment or two. This may sound like a small issue, but I'm about to submit the app for testing to a "serious" client, and I know they would not appreciate the pygame icon. So, is there a way to either: 1) Exclude pygame_icon.icns on the command line (I tried --excludes and --dylib-excludes to no avail); or 2) Change the default recipe for pygame; 3) Invoke some other magic to fix this? BTW: I also tried to remove pygame_icon.icns manually after the app was created (deleting it from site-packages.zip, then recreating the .zip file), but this broke something else. TIA...! Happy holidays, Joel Joel Gluck, MEd, RDT Metta Software Somerville, MA, USA

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Re: [Pythonmac-SIG] string ids
by Chris Rebert Dec. 30, 2008

Dec. 30, 2008

On Mon, Dec 29, 2008 at 11:46 AM, Feat <jf(a)ai.univ-paris8.fr> wrote: > At 11:30 -0500 29/12/08, David Hostetler wrote: >>The 'weird' results you were seeing when using 'is' were really just the python interpretor lifting up its skirts a bit and (inadvertantly perhaps) revealing when it had shared the memory storage for a string literal and when it hadn't. > > Yes: thank you. Is there any way to predict whether the values are going to be shared or not? As a matter of fact, the ids are the same as long as I do not use any for statement with the values in a sequence, and when I use any, it will sometimes get them from the context and some other times it will make up new values. I think the interpreter only automatically interns extremely short strings, like one or two characters long, and the empty string of course. In any case, you shouldn't worry about it or really care about the mysterious rules the interpreter uses to decide when to share a string. As explained below, you almost always should use == and not `is`; thus, comparing strings for pointer equality almost never comes up in practice, so the 'sharing' rules don't matter much at all. > I had hoped I could tell my students how to discriminate between the two cases. They are no C programmers yet, but they're fully aware of the difference between the eq() and equal() Lisp predicates, eq() being totally reliable as for pointers comparison. The difference between `is` and == is exactly the same as between eq() and equal(), pointer equality versus value equality. `is` is used extremely rarely, apart from comparisons with None, with `if foo is None:` being idiomatic in that case. Unless you're comparing with None or have very good reason, always use ==. It's similar to how one should always use .equals() rather than == with objects in Java. If you want to give your students a more straightforward example to demonstrate the difference, use a normal, non-builtin object instead of a string so that the interpreter doesn't do any unexpected magical sharing. For example, write a simple Point class and show how: a = Point(1, 2) b = Point(1, 2) c = a print a == b #---> True print a is b, b is a #---> False False print a is c, c is a #---> True True Cheers, Chris -- Follow the path of the Iguana... http://rebertia.com

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Re: [Pythonmac-SIG] string ids
by David Hostetler Dec. 29, 2008

Dec. 29, 2008

see: http://docs.python.org/reference/expressions.html#id24 "Due to automatic garbage-collection, free lists, and the dynamic nature of descriptors, you may notice seemingly unusual behaviour in certain uses of the is operator, like those involving comparisons between instance methods, or constants. Check their documentation for more info." As for teaching this issue, I would imagine that the appropriate distinction needs to be made between 'is' as a built-in operator that performs object identity comparison, vs. lexicographical comparison. Also: http://docs.python.org/library/stdtypes.html#comparisons http://docs.python.org/reference/expressions.html#comparisons On Mon, Dec 29, 2008 at 11:09 AM, Feat <jf(a)ai.univ-paris8.fr> wrote: > At 16:59 +0100 29/12/08, Ronald Oussoren wrote: >>Because strings aren't stored as unique objects. That is, there is no guarantee whatsoever that 'string1 == string2' implies 'string1 is string2'. > > Optimization, uh? Okay, that settles it: thanks! > > -- > Jym Feat ~ Paris FR 75018 > _______________________________________________ > Pythonmac-SIG maillist - Pythonmac-SIG(a)python.org > http://mail.python.org/mailman/listinfo/pythonmac-sig >

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update on v2.6
by DavidW Dec. 29, 2008

Dec. 29, 2008

Hello all - seasons greetings! Would someone give a _short_ eval./summary of the state of v2.6 - I'm wondering how stable it is and whether I might need to put aside some a decent amount of time to upgrade. I use quite a lot of 3rd party packages including numpy, wxpython, matplotlib etc etc. I'd like to pass the response back to the csound dev. group, it that's OK. thanks for your help, David ________________________________________________ - Sonic Communications Research Group: creative.canberra.edu.au/scrg - Experimental Polymedia: www.avatar.com.au - Capital Markets Cooperative Research Centre: www.cmcrc.com - Education for Financial Independence: www.mindthemarkets.com.au

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Re: [Pythonmac-SIG] string ids
by Feat Dec. 29, 2008

Dec. 29, 2008

The only way to ensure it will *always* work is when sharing values: Python 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin >>> c1 = 'red' ; c2 = 'green' ; colors = (c1, c2) >>> [x is c2 for x in colors] [False, True] Any new list will break the identity: >>> [x is c2 for x in 'red green'.split()] [False, False] >>> [x is 'green' for x in 'red green'.split()] [False, False] I'm baffled...

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