Mailman 3 April 2002 - Pythonmac-SIG

Re: [Pythonmac-SIG] ObjC stuff
by Jack Jansen March 20, 2003

March 20, 2003

Recently, Steve Spicklemire <steve(a)spvi.com> said: > So it's in CVS somewhere? I'll do a check-out and see if I can find it. I don't know, Steven Majewski may know (I think he is the one who looked at it). If it isn't in the repository it probably should be, preferrably in the Modules directory (because it is useful for non-Mac users) but if there's objections against that we'll put it in the Mac/Modules dir. > I just ordered CW-6 today so I might be able to pitch in a bit. While very useful for other things (like MacPython development) you don't need it for OSX unix-Python development: this is all make and gcc-based (and you have those on your OSX developer disc). -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)oratrix.com | ++++ if you agree copy these lines to your sig ++++ www.oratrix.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm

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Re: [Pythonmac-SIG] more on MacPython/OSX/shared lib
by Jack Jansen Aug. 14, 2002

Aug. 14, 2002

Recently, Paul Miller <paul(a)fxtech.com> said: > >My next step is to remove all my Python code and see if I get the error > >without linking against Python. > > Back to square 1 for me. I removed the Python lib and all my Python code > and I have the same problem. It must be something in global initialization > in my own code. For yucks I disabled the __initialize and __terminate entry > points in the linker options and I ended up with an assert in my code > (which was expecting the static initializations to happen). Hmm, my guess would be either a bug in CodeWarrior, or (probably more likely) you using the wrong runtime library. Especially if you use C++ you have to be careful with which runtime library you use where, because the zero-overhead exception handling will fail otherwise. And you shouldn't use Python as an example, because it doesn't follow the rules (but gets away with it being a C program). You might want to spell out the MW Targeting MacOS manual. -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)oratrix.com | ++++ if you agree copy these lines to your sig ++++ www.cwi.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm

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Python defaulting as a framework for OSX/Mach-O
by Alexandre Parenteau May 20, 2002

May 20, 2002

Folks, The primary reason of my email is to push for defaulting the compilation of Python-Mach-O as a framework, so application on OSX can embed Python easily. It would be nice also to provide an installer of Python this way. In the current MacCvs CVS (cvsgui on SourceForge), I have now a MacCvsX (Mach-O) loading dynamically Python (Mach-O) to handle the Macros of MacCvsX. Previously the same thing was working in CFM with MacCvs (CFM) and MacPython (CFM). The step is important for me : I can check-out Python code using OpenSSH, with Unix line feed, ISO text encoding, cvs-MachO spawned by MacCvsX. All is now functional under Mach-O. I can compile the Mach-O and CFM Python with the same sandbox (one using gcc, the other one CodeWarrior), which is even better. So except for CodeWarrior, I never quit Mach-O for the whole process. [I guess some still wonder why I want so much to use Mach-O and not CFM, that is because under CFM you don't have a good PosIX layer, only an emulation named "GUSI"] But using Mach-O/OSX you are more or less required to use the Frameworks mechanism for dynamic loading Python (I didn't find a way to deal with dlopen, I suspect only .so object can be loaded thru this mechanism). So what prevent from defaulting to Framework and distributing it this way ? I guess it has some impacts on distutils. Is that working with Python installed as a Framework (I never tried ) ? I wanted also to point out that people who want to embed dynamically Python in either a Classic, CFM-Carbon, Mach-O-Carbon or Win32 platform can find a complete example inside the MacCvs/WinCvs source code. Regards, Alex. -- Alexandre Parenteau Computer Scientist Core Technologies, AGM Adobe Systems, Inc. 408-536-6166

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Method to lock/unlock files
by Mike Nardell May 10, 2002

May 10, 2002

I would like to know if there is a method in Python to unlock/lock files (so they can be protected) on a Mac running on OS 8.6 or 9. Ideally I would like a cross platform solution. It seems that the calls to do things like change mode are not implemented in MacPython. I have looked at some of the modules particular to the Mac. It looks like the Carbon.Res would do what I want, I just can't seem to find any documentation on all of the Carbon stuff. I have looked around at some other mac modules, and not been successful. I look forward to being a part of the Python community! Thanks! Michael

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Is MacPython the right tool for me?
by Robin Siebler May 2, 2002

May 2, 2002

Let me prefice this by saying that I haven't used a Mac in 5 years and I haven't used MPW in over 5 years. With that said, here is what I am trying to do: I have some command-line tools that run in MPW. I would like to create some automated scripts to test these CLT's. Is MacPython the right tool for this? If not, what would be? I have used Python quite successfully to test CLT's under Windows, so I'm hoping that I can use it on the Mac to do the same thing. Thanks! Robin L. Siebler ------------------------------------- "Bother", said Pooh, as he deleted windows.

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0.1.3 of SalStat runs on [Mac OS X with fink]
by L.F.H. May 1, 2002

May 1, 2002

Hi Alan james Salmoni, you asked for a "nice new Mac". I can't give you such a machine, but .. I tested the above mentiioned software (but at first) if it starts without problems. http://salstat.sunsite.dk Unpacking with the usual tar -xvxf salstat.tar.gz starting python gird.py no error. ~~~~~~~~~~~~~~~~~~~~~~~~~~~ My configuration http://fink.sourceforge.net/ fink 0.4 From this I installed python2.2.1 and wxpython-wxgtk 2.3.2.1-3 --> don't install wxmac but wxgtk and this works quite fine. ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ludger Humbert

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editing Python scripts on OS X
by Kevin Altis May 1, 2002

May 1, 2002

Okay, day one of Mr. Altis and OS X begins. ;-) Can MacPython and MachoPython co-exist peacefully on OS X? Since MachoPython is working I don't want to install MacPython only to find that I just stomped my MachoPython install. In particular, the binary MachoPython 2.2.1 we're using with the wxPython Mac build available at: http://sourceforge.net/project/showfiles.php?group_id=10718 As a side-note, I'm still wondering about MachoPython installed by Fink compared to the binary installer. The differences in paths, conflicts, etc. probably need to be documented and sorted out. Editor recommendations on OS X are welcome. The list at http://www.python.org/editors/ contains quite a few Unix & Multiplatform Text Editors. What I want is a GUI editor that is Python-aware, so it understands whitespace in Python scripts, can insert four spaces instead of tabs, manage indent/dedent of code blocks and preferably has syntax coloring and can run tabnanny, and jump to the line in the source with a syntax error. It needs to be able to at least read and save files with Unix (LF) line endings, but it would be best if it can deal with Windows (CR/LF) and Mac (CR). I don't particularly care about more than basic key bindings like Cut/Copy/Paste and arrow keys, I'm mostly a mouser. OS X comes with Pico, vi and Emacs editors, but those aren't Python-aware and you need to already be comfortable with the Unix shell and non-GUI editors in order to use those effectively. Emacs can be configured to recognize Python files (python mode), but I've forgotten how to do that and I'm not sure what other ANSI terminal changes might be necessary to get syntax coloring. Plus, I don't think Mac users without a Unix background should be forced to use a non-GUI editor like Pico, vi, or Emacs. As a former (but rusty) Unix admin I could use Emacs if I was forced to, but that won't help a lot of other non-geeks and I want to be able to recommend an editor to use on OS X in our PythonCard walkthroughs. You can use TextEdit to edit Python files, but again it isn't Python-aware. That leaves Alpha and BBEdit and those aren't free and I haven't spent any time with them yet (well both of them many years ago, but that doesn't count), so I'm not sure of how well they work with Python. IDLE doesn't really work because tk doesn't really work on OS X. So, free or even inexpensive Python-aware editors on OS X appears to be a big issue. If possible I would like to use MacPython to edit Python scripts. I haven't seen MacPython yet, but I have faith in Jack :) Thus my basic question of whether MacPython and MachoPython can co-exist? It might be nice if someone funded a Mac OS X port of Neil's Scintilla and SciTE, so that we would have another free GUI source code editor that handled a variety of languages. http://www.scintilla.org/ Sorry if this is a FAQ. ka

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BBEdit questions
by Kevin Altis May 1, 2002

May 1, 2002

I'm in the process of evaluating BBEdit as a Python editor. I'm using version the trial version 6.5.2 on OS X 10.1.4 with the MachoPython 2.2.1 and wxPython 2.3.3 preview builds available at: http://sourceforge.net/project/showfiles.php?group_id=10718 In the Text Options dialog I have it set to auto-indent, auto-expand tabs (4 spaces) and syntax coloring is on. I would like to change the default colors being used for syntax coloring but can't find the dialog. Does that have to be changed manually in a file on disk and if so where? Auto-indent seems pretty dumb, I have to tab after typing a colon and Return so it apparently doesn't understand blocks. If there is a setting for this, I would like to change the behavior. Worse, it doesn't know that the tabs expanded to four spaces, so when you have to backspace, so you have to backspace once for each space. That is sort of annoying, any workarounds besides always using tabs instead of spaces? Check syntax under the #! menu always complains with an error "The front window isn't in a scripting language BBEdit currently recognizes (application error code 30001)." This is sort of strange considering that when I use the Run command it promptly displays the syntax error in context. The Run command does not work with wxPython Mac and MachoPython scripts, it appears to go into a loop trying to launch the script while the "Script Progress" dialog is up. Run in Terminal seems problematic, it is dropping a lot of print statements. I'm not sure if that means it is actually causing the wxPython program I'm testing to drop events or whether it means there is a problem between the two processes terminal and the wxPython script. Consequently, the only thing that seems to be reliable is leaving a terminal open and executing the script directly after I've done a Save in BBEdit. I'm aleady used to doing this on Windows so that isn't a big deal except for the lack of syntax checking. I'm sure I'll have other issues, but I thought I should bring these up in case there are answers before I post a message to the BBEdit folks. A wiki or other help page on editing Python scripts on the Mac might be helpful to capture some of this knowledge. ka

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Lost connection
by broz April 29, 2002

April 29, 2002

Hi folks, The solution to my problem could very well seem obvious, but to me it's not obvious. I've got a python application that opens a socket, receives data (XML), parses it, and updates a database. Under normal circumstances, it all works just fine. Under abnormal circumstances, it sits and spins. The main application opens a socket with listen(), and then accept() is called. It dutifully waits for the other machine to connect() and start dumping data. That process works fine. If the other machine drops the line, things get hairy. My python app thinks the connection is still live, and spins waiting for more data. I'm just doing a socket.recv(2048) to get the data. I would have expected an error to be thrown if the connection failed, but no error is thrown. Odd. What I need to do is discover the connection went down, and open a new one when the server on the other end comes back. I'm running this on Mac OS X. How can I tell the connection went down? Thanks in advance. def socketSetup(self, thePort): try: self.theSock = socket(AF_INET, SOCK_STREAM) self.theSock.bind(('', thePort)) self.theSock.listen(5) except Exception, theErr: self.logger.logStatus( "connection failed: " + str(theErr)) def socketConnect(self): " this is where we accept the connection from the server" print "in socketConnect" try: if not self.theSock: print "theSock is None!" else: self.theConnection, theAddress = self.theSock.accept() self.connected = 1 except socket.error, theErr: self.connected = 0 print "socketConnect error - " + str(error) + ": " + str(theErr) def getConnectStatus(self): return self.connected def getData(self): "handle data feeds from either a file or a socket" # print "getData called" try: if self.connected: self.theData = self.theConnection.recv(2048) else: self.socketConnect() return self.theData except Exception, theErr: print ("getData error: " + theErr) self.logger.log("getData error: " + theErr) -- Richard Brosnahan Editor in Chief Broz News Hand Picked Technical News Updated Every Business Day! http://broznews.com/

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wxPython Mac and MachoPython wiki pages
by Kevin Altis April 28, 2002

April 28, 2002

I went ahead and created a separate wxPython Mac wiki page http://wiki.wxpython.org/index.cgi/wxPythonMac You can refer to that page from other wiki pages by using a ["wxPythonMac"] reference. I also created a MachoPython page to go along with the wxPython Mac page above. http://wiki.wxpython.org/index.cgi/wxPythonMac Strangely, the MachoPython wiki page is already the top search result on Google for MachoPython. These are wiki pages, that means you can edit them and make them better (hint, hint). ka --- Kevin Altis altis(a)semi-retired.com

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