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

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

Dec. 29, 2008

Do not rely on the id of instances of builtin types of Python. The "is" operator is used to determine if two expressions refer to the same object, use the "==" operator to determine if two expressions have the same value. For some builtin value types the interpreter always uses the same Python object for the same value, for other types it does not. That's purely an implementation detail, future versions of Python may behave differently in this respect. That's the explanation for the behaviour you're seeing. When you execute this code: :>>> x = 'blue' :>>> y = 'bl' + 'ue' :>>> a = 1 :>>> b = 2/2 "x" and "y" refer to two different string objects with the value 'blue'. "a" and "b" refer to the same integer object with value 1, which is due to the optimisation I mentioned earlier. This is not true for arbitrary objects though: :>>> c = 2 ** 12 :>>> d = 2 ** 12 :>>> c is d False Ronald On Monday, December 29, 2008, at 04:31PM, "Sean DiZazzo" <half.italian(a)gmail.com> wrote: >Interesting... It behaves correctly for strings if you use a list inside the >comprehension instead of a tuple. >~Sean > >On Mon, Dec 29, 2008 at 7:01 AM, Feat <jf(a)ai.univ-paris8.fr> wrote: > >> I thought a string was stored as a unique object, so why isn't this >> evidenced by the code below ? >> >> Python 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) >> [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin >> >>> [light is 'green' for light in 'green', 'red'] >> [True, False] >> >>> color = 'green' >> >>> [light is 'green' for light in 'green', 'red'] >> [False, False] >> >>> color = 1 >> >>> [light is 'green' for light in 'green', 'red'] >> [True, False] >> >> whereas: >> >> >>> [x is 1 for x in 1, 2] >> [True, False] >> >> whether the value 1 is assigned to some other variable or not... the id of >> 1 doesn't vary -- just what is the rationale behind that? >> >> I know I could use the == predicate instead, but just how many different >> greens (with different ids) can there be, and how do I know which one is >> under focus at a given time? >> >> -- >> 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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Re: [Pythonmac-SIG] string ids
by Sean DiZazzo Dec. 29, 2008

Dec. 29, 2008

Interesting... It behaves correctly for strings if you use a list inside the comprehension instead of a tuple. ~Sean On Mon, Dec 29, 2008 at 7:01 AM, Feat <jf(a)ai.univ-paris8.fr> wrote: > I thought a string was stored as a unique object, so why isn't this > evidenced by the code below ? > > Python 2.5.2 (r252:60911, Feb 22 2008, 07:57:53) > [GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin > >>> [light is 'green' for light in 'green', 'red'] > [True, False] > >>> color = 'green' > >>> [light is 'green' for light in 'green', 'red'] > [False, False] > >>> color = 1 > >>> [light is 'green' for light in 'green', 'red'] > [True, False] > > whereas: > > >>> [x is 1 for x in 1, 2] > [True, False] > > whether the value 1 is assigned to some other variable or not... the id of > 1 doesn't vary -- just what is the rationale behind that? > > I know I could use the == predicate instead, but just how many different > greens (with different ids) can there be, and how do I know which one is > under focus at a given time? > > -- > 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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Re: [Pythonmac-SIG] python3 on my mac
by Dan Dec. 26, 2008

Dec. 26, 2008

Thanks everyone so far for the help. In regard to IDLE - right now when I type IDLE at the terminal I get a python shell that looks like the attached image (myidle.jpg). As you can see there is no real GUI with menu, as opposed to the full IDLE program (see http://en.wikipedia.org/wiki/File:Idle_gui.png) that usually includes "File, Edit, Shell, Debug, Options, Windows, Help... Any suggestions about how to get that running on my mac, especially using Python 3.0 as the interpreter? Happy Holidays to everyone. > On Dec 25, 2008, at 2:02 PM, Sean DiZazzo wrote: > >> You didn't hurt your system install. I've been running python >> built from source like that alongside my system python for years >> with no problems. >> >> Not sure about IDLE... Mine works fine with 2.5.2 compiled and >> installed as you did. >> >> I'm curious of what the real benefits of installing python as a >> framework are, and what exactly it means to be a 'framework' Maybe >> it makes python more accessible to other parts of the OS? Maybe it >> helps when compiling mixed language packages...ie PyObjC or PyQT? >> I'm grabbing at straws... Google would probably help, but it's >> Christmas, and I think the group could benefit from knowing as well! >> >> Merry Christmas! >> >> ~Sean >> >> >> On Thu, Dec 25, 2008 at 10:31 AM, Dan <blufur(a)gmail.com> wrote: >> Thanks for requesting clarification. I am running Leopard (10.5.6) >> I installed from source - and just used the standard: >> >> ./configure >> make >> make test >> sudo make install >> >> I searched the archives of this discussion group, and learned I >> could see where all pythons are installed, and here's what things >> look like on my system: >> >> DMS-MacBook-2:~ dan$ ls -l /usr/local/bin/python* >> lrwxr-xr-x 1 root wheel 68 Oct 8 10:31 /usr/local/bin/ >> python -> ../../../Library/Frameworks/Python.framework/Versions/2.6/ >> bin/python >> lrwxr-xr-x 1 root wheel 75 Oct 8 10:31 /usr/local/bin/ >> python-config -> ../../../Library/Frameworks/Python.framework/ >> Versions/2.6/bin/python-config >> lrwxr-xr-x 1 root wheel 71 Oct 8 10:31 /usr/local/bin/ >> python2.6 -> ../../../Library/Frameworks/Python.framework/Versions/ >> 2.6/bin/python2.6 >> lrwxr-xr-x 1 root wheel 78 Oct 8 10:31 /usr/local/bin/ >> python2.6-config -> ../../../Library/Frameworks/Python.framework/ >> Versions/2.6/bin/python2.6-config >> -rwxr-xr-x 1 root wheel 1658332 Dec 21 19:40 /usr/local/bin/ >> python3.0 >> -rwxr-xr-x 1 root wheel 1401 Dec 21 19:41 /usr/local/bin/ >> python3.0-config >> lrwxr-xr-x 1 root wheel 69 Oct 8 10:31 /usr/local/bin/ >> pythonw -> ../../../Library/Frameworks/Python.framework/Versions/ >> 2.6/bin/pythonw >> lrwxr-xr-x 1 root wheel 72 Oct 8 10:31 /usr/local/bin/ >> pythonw2.6 -> ../../../Library/Frameworks/Python.framework/Versions/ >> 2.6/bin/pythonw2.6 >> >> As of now, if I type "python" at the terminal, it starts up >> interactive python version 2.6 >> If I type "python3.0", it starts interactive python 3.0 >> >> If I type "IDLE" it actually seems to open a window that says >> "python shell" and is running python 3.0 (even says IDLE 3.0 above >> prompt). >> >> But there's no menu for debugging, etc. >> >> So what I'm wondering is: >> 1. Should I have used altinstall (i.e. did I possibly break >> something by just using sudo make install? Can you all tell from >> those python version links above if I've screwed things up on my >> system?). >> 2. If so, can I undo what I've done? >> 3. How can I get the full version of IDLE running with the menu bar >> across the top? >> 4. Is there some online resource I could have used to do this >> properly? The links from python.org for mac info seems to be a bit >> out of date... >> >> Thanks for your help, and I apologize for my ignorance as someone >> new to all this. >> >> >> On Dec 25, 2008, at 1:22 PM, Nehemiah Dacres wrote: >> >> I take it you're installing from source? or from macports? name the >> method and we might be able to help you >> >> >> On Thu, Dec 25, 2008 at 11:34 AM, Dan <blufur(a)gmail.com> wrote: >> HI everyone. Wondering if anyone can help a newbie. I tried >> installing python 3 on my mac and think I messed up a bit: >> >> 1. I didn't do the altinstall option. Is this really bad, and >> should I uninstall and try again? Right now I have to type >> "python3.0" to get it to work at terminal screen >> 2. If so, how can I uninstall? Would time machine be of any help >> here? >> 3. I can't seem to get IDLE to work, especially with Python 3 (when >> I run it from terminal it has no menu bar and i think it's using >> python 2.x) >> >> Any help would be greatly appreciated. Hopefully I didn't >> permanently screw up my mac's python installation... >> >> >> _______________________________________________ >> Pythonmac-SIG maillist - Pythonmac-SIG(a)python.org >> http://mail.python.org/mailman/listinfo/pythonmac-sig >> >> >> >> -- >> >> "lalalalala! it's not broken because I can use it" >> >> http://linux.slashdot.org/comments.pl?sid=194281&threshold=1&commentsort=0&… >> >> _______________________________________________ >> Pythonmac-SIG maillist - Pythonmac-SIG(a)python.org >> http://mail.python.org/mailman/listinfo/pythonmac-sig >> >

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Re: [Pythonmac-SIG] python3 on my mac
by Dan Dec. 25, 2008

Dec. 25, 2008

Thanks for requesting clarification. I am running Leopard (10.5.6) I installed from source - and just used the standard: ./configure make make test sudo make install I searched the archives of this discussion group, and learned I could see where all pythons are installed, and here's what things look like on my system: DMS-MacBook-2:~ dan$ ls -l /usr/local/bin/python* lrwxr-xr-x 1 root wheel 68 Oct 8 10:31 /usr/local/bin/python - > ../../../Library/Frameworks/Python.framework/Versions/2.6/bin/python lrwxr-xr-x 1 root wheel 75 Oct 8 10:31 /usr/local/bin/python- config -> ../../../Library/Frameworks/Python.framework/Versions/2.6/ bin/python-config lrwxr-xr-x 1 root wheel 71 Oct 8 10:31 /usr/local/bin/ python2.6 -> ../../../Library/Frameworks/Python.framework/Versions/2.6/ bin/python2.6 lrwxr-xr-x 1 root wheel 78 Oct 8 10:31 /usr/local/bin/ python2.6-config -> ../../../Library/Frameworks/Python.framework/ Versions/2.6/bin/python2.6-config -rwxr-xr-x 1 root wheel 1658332 Dec 21 19:40 /usr/local/bin/python3.0 -rwxr-xr-x 1 root wheel 1401 Dec 21 19:41 /usr/local/bin/ python3.0-config lrwxr-xr-x 1 root wheel 69 Oct 8 10:31 /usr/local/bin/pythonw -> ../../../Library/Frameworks/Python.framework/Versions/2.6/bin/pythonw lrwxr-xr-x 1 root wheel 72 Oct 8 10:31 /usr/local/bin/ pythonw2.6 -> ../../../Library/Frameworks/Python.framework/Versions/ 2.6/bin/pythonw2.6 As of now, if I type "python" at the terminal, it starts up interactive python version 2.6 If I type "python3.0", it starts interactive python 3.0 If I type "IDLE" it actually seems to open a window that says "python shell" and is running python 3.0 (even says IDLE 3.0 above prompt). But there's no menu for debugging, etc. So what I'm wondering is: 1. Should I have used altinstall (i.e. did I possibly break something by just using sudo make install? Can you all tell from those python version links above if I've screwed things up on my system?). 2. If so, can I undo what I've done? 3. How can I get the full version of IDLE running with the menu bar across the top? 4. Is there some online resource I could have used to do this properly? The links from python.org for mac info seems to be a bit out of date... Thanks for your help, and I apologize for my ignorance as someone new to all this. On Dec 25, 2008, at 1:22 PM, Nehemiah Dacres wrote: > I take it you're installing from source? or from macports? name the > method and we might be able to help you > > On Thu, Dec 25, 2008 at 11:34 AM, Dan <blufur(a)gmail.com> wrote: > HI everyone. Wondering if anyone can help a newbie. I tried > installing python 3 on my mac and think I messed up a bit: > > 1. I didn't do the altinstall option. Is this really bad, and > should I uninstall and try again? Right now I have to type > "python3.0" to get it to work at terminal screen > 2. If so, how can I uninstall? Would time machine be of any help here? > 3. I can't seem to get IDLE to work, especially with Python 3 (when > I run it from terminal it has no menu bar and i think it's using > python 2.x) > > Any help would be greatly appreciated. Hopefully I didn't > permanently screw up my mac's python installation... > > > _______________________________________________ > Pythonmac-SIG maillist - Pythonmac-SIG(a)python.org > http://mail.python.org/mailman/listinfo/pythonmac-sig > > > > -- > > "lalalalala! it's not broken because I can use it" > > http://linux.slashdot.org/comments.pl?sid=194281&threshold=1&commentsort=0&…

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python3 on my mac
by Dan Dec. 25, 2008

Dec. 25, 2008

HI everyone. Wondering if anyone can help a newbie. I tried installing python 3 on my mac and think I messed up a bit: 1. I didn't do the altinstall option. Is this really bad, and should I uninstall and try again? Right now I have to type "python3.0" to get it to work at terminal screen 2. If so, how can I uninstall? Would time machine be of any help here? 3. I can't seem to get IDLE to work, especially with Python 3 (when I run it from terminal it has no menu bar and i think it's using python 2.x) Any help would be greatly appreciated. Hopefully I didn't permanently screw up my mac's python installation...

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py2app and Terminal
by Bryan Smith Dec. 24, 2008

Dec. 24, 2008

Hi everyone, I am just finishing up an application and I would like to create an app file for my program. That said, it's CLI based with no GUI. If I try to make an app, it only seems to work if I have a GUI. Is it possible to tell py2app to open Terminal.app first and run my program through that? Thanks, Bryan

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python help() problems
by George Wright Dec. 22, 2008

Dec. 22, 2008

Gidday I continue to have problems with python 2.5.1 and python2.4 on OSX 10.5.5 I can't access help() > modules Here is the complete error report for 2.5 geomacbk:~ georgewr$ python Python 2.5.1 (r251:54863, Apr 15 2008, 22:57:26) [GCC 4.0.1 (Apple Inc. build 5465)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> help() Welcome to Python 2.5! This is the online help utility. If this is your first time using Python, you should definitely check out the tutorial on the Internet at http://www.python.org/doc/tut/. Enter the name of any module, keyword, or topic to get help on writing Python programs and using Python modules. To quit this help utility and return to the interpreter, just type "quit". To get a list of available modules, keywords, or topics, type "modules", "keywords", or "topics". Each module also comes with a one-line summary of what it does; to list the modules whose summaries contain a given word such as "spam", type "modules spam". help> modules Please wait a moment while I gather a list of all available modules... Leopard libedit detected. /System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/ pkgutil.py:110: DeprecationWarning: twisted.flow is unmaintained. __import__(name) /Library/Python/2.5/site-packages/Twisted-8.1.0-py2.5-macosx-10.5- i386.egg/twisted/words/im/__init__.py:8: UserWarning: twisted.im will be undergoing a rewrite at some point in the future. warnings.warn("twisted.im will be undergoing a rewrite at some point in the future.") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/site.py", line 348, in __call__ return pydoc.help(*args, **kwds) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1647, in __call__ self.interact() File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1665, in interact self.help(request) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1681, in help elif request == 'modules': self.listmodules() File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1802, in listmodules ModuleScanner().run(callback) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pydoc.py", line 1853, in run for importer, modname, ispkg in pkgutil.walk_packages(): File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/pkgutil.py", line 110, in walk_packages __import__(name) File "/usr/local/lib/wxPython-unicode-2.8.9.1/lib/python2.5/site- packages/wxaddons/__init__.py", line 29, in <module> config = wx.Config("wxaddons") File "//usr/local/lib/wxPython-unicode-2.8.9.1/lib/python2.5/site- packages/wx-2.8-mac-unicode/wx/_misc.py", line 3298, in __init__ _misc_.Config_swiginit(self,_misc_.new_Config(*args, **kwargs)) wx._core.PyNoAppError: The wx.App object must be created first! >>> __________________________________ I also have an error on python2.4 help() help> modules Bus error geomacbk:~ georgewr$ ___________________________________ Any assistance appreciated. George Wright georgewr(a)bigpond.net.au http://mywebsite.bigpond.net.au/georgewr/ http://www.labyrinth.net.au/~gwright

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Compiling Python 2.6.1 on Leopard
by R. Ellsworth Pollard Dec. 22, 2008

Dec. 22, 2008

Where might I find instructions for compiling Python on Leopard? I just asked this on tutor and someone suggested that this list might be a better place to ask. I'm specifically looking for how to compile Python to replace the native installation of 2.5.1, what common libraries I should build it with, and how to support readline. The default ./configure seems to compile it to function as python2.6 instead of python, also. Robert

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pyobjc 2.0 with the python.org distribution?
by David Warde-Farley Dec. 19, 2008

Dec. 19, 2008

Hi folks, I noticed today that while PyObjC, etc. is included in the system Python in 10.5, the py2.5-fat binaries on undefined.org are 1.4.x series. As I understood it, the python.org UB is the only solution if you want to build redistributable applications. I also have been using it as a jumping off point so that I have a completely common dev environment on 10.5 and 10.4 for other stuff I do. Well, I'm trying to build PyObjC 2.0 from trunk with the python.org package and running into all sorts of errors. For example, pyobjc-core fails to build with this: 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/folders/Hv/ HvVKXkVwF3Kt9ULgIvCLP++++TI/-Tmp-//ccrLeLvv.out error: command 'gcc' failed with exit status 1 I found one post on the mailing list from July that went unanswered detailing pretty much the same situation. Any hints? Thanks, David

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Troubles with pygame+py2app to get icon
by pdorange＠mac.com Dec. 19, 2008

Dec. 19, 2008

Hi, I got a trouble to have an icon to the Mac bundle of my little game using py2app. The bundle is correct but the icon is not set, always got the default pygame icon. The icon file is copied and put in the bundle by py2app (in ressources/english.lproj but the info.plist set CFBundleIconFile to 'PythonApplet.icns'. The 'PythonApplet.icns' is in the bundle in the main dir. with the alien example (from py2app) and other pygame examples, the icon is also not set when bundle. Any clue, or working samples ? My config : Python 2.5.2 Pygame 1.8.1rc1 py2app 0.4.2 the structure on disk : the icon file (mwar.icns) is located inside 'English.lproj' directory, i also try to locate it in the main dir but then if icon file is not copied. The script : #!/usr/bin/env python from setuptools import setup from mwarbasic import * plist = dict( CFBundleIconFile='mwar.icns', CFBundleName=k_NAME, CFBundleShortVersionString=k_VERSION, CFBundleGetInfoString=' '.join([k_NAME, k_VERSION]), CFBundleExecutable=k_NAME, CFBundleIdentifier='org.maddog.microwar', ) setup( data_files=['English.lproj', 'data'], setup_requires=["py2app"], app=[dict(script="microwar.py", plist=plist, iconfile='English.lproj/mwar.icns')], ) -- Pierre-Alain Dorange <http://microwar.sourceforge.net/>

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