🌐 Mailman 3 May 2007 - Pythonmac-SIG - python.org

py2app warning: may need to include email.Util
by Russell E Owen Aug. 6, 2007

Aug. 6, 2007

My py2app-bundled Mac application recently started failing with "no module named email.Util" when trying to display images. It turns out pyfits uses urllib which uses email.Util, which apparently has been renamed email.util with some kind of clever lazy import code so one can still use email.Util. Apparently the cleverness is too much for py2app's module finder. Anyway, the easy workaround is to specify email.Util as a necessary module to import. But I'll report a python bug or submit a urllib patch. -- Russell

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which fortran for pythonmac.org binaries?
by Paul Kienzle June 4, 2007

June 4, 2007

Hi, I've downloaded scipy for python2.4 from pythonmac.org today: http://pythonmac.org/packages/py24-fat/index.html and saw the following problem: File "../chisq.py", line 6, in ? import scipy.interpolate File "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy/interpolate/__init__.py", line 7, in ? from interpolate import * File "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy/interpolate/interpolate.py", line 13, in ? import fitpack File "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy/interpolate/fitpack.py", line 34, in ? import _fitpack ImportError: Inappropriate file type for dynamic loading Some web searching suggests that it may be a fortran versioning problem. Indeed, otool -L reports: $ otool -L /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy/interpolate/_fitpack.so /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy/interpolate/_fitpack.so: /usr/local/lib/libg2c.0.dylib (compatibility version 1.0.0, current version 1.0.0) /usr/local/lib/libgcc_s.1.0.dylib (compatibility version 1.0.0, current version 1.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.1.6) which suggests a pre-4.0 version of fortran was used to compile. The new library replacing g2c is gfortran. I have gfortran 4.2 downloaded from: http://r.research.att.com/exp/ and installed in /usr/local. Until Apple shows some leadership and picks a fortran compiler, is there some way to package scipy on pythonmac.org so that it contains it's own fortran libraries? At the very least, can somebody please point me to the fortran version that was used to build scipy so that I can drop the libraries in /Librar/Frames/Python.framework/Versions/2.4/lib and set DYLD_LIBRARY_PATH to find them? Thanks in advance, - Paul Paul Kienzle pkienzle(a)nist.gov

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mdutils
by Jan H. Jensen June 1, 2007

June 1, 2007

Hi, has anyone managed to use mdutils on a mac? Thanks, Jan -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Jan H. Jensen Associate Research Professor Department of Chemistry jhjensen(a)kemi.ku.dk University of Copenhagen Phone: +45 35 32 02 39 Universitetsparken 5 FAX: +45 35 32 02 14 2100 Copenhagen Denmark http://propka.ki.ku.dk/~jhjensen =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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CGI + appscript newbie question/problem
by Andres Francisco Rojas May 29, 2007

May 29, 2007

Hey everyone. So I'm more or less new to Python, just wanted to say that right up front so please excuse any silly questions. Generally what I'm trying to do is control a Mac OS X application through a website via Python and appscript. I have successfully got Apache running and configured to run Python scripts, basic modules like os and cgi work and I can do silly form processing and stuff like that, so I know Python itself is good to go, along with the web server. I can execute AppleScript commands, and control applications, successfully using appscript when using Python via Terminal (and following along with the examples), but when I try to import appscript into the script run as cgi I get an 500 Internal Server Error. I know it's the import call because I can comment it out and the script runs, but I can't do any AppleScripting (obviously). Is there a limitation to running appscript when in cgi on Apache? Is there an Apache setting I'm missing? Everything is local, by the way, running off the machine I'm writing this message on. Below is the code that Apache runs: #!/usr/bin/python import cgi from appscript import * print "Content-Type: text/html\n\n" # Define function to generate HTML form. def generate_form(): print "<HTML>\n" print "<HEAD>\n" print "\t<TITLE>Info Form</TITLE>\n" print "</HEAD>\n" print "<BODY>\n" print "\t<FORM METHOD = post ACTION = \" 1.cgi\">\n" print "\t<INPUT TYPE = hidden NAME = \"action\" VALUE = \"launch\">\n" print "\t<INPUT TYPE = submit VALUE = \"LAUNCH\">\n" print "</BODY>\n" print "</HTML>\n" # Define main function. def main(): form = cgi.FieldStorage() if (form.has_key("action")): if (form["action"].value == "launch"): print "COUNTDOWN!" texteditGUI = app('System Events').processes['TextEdit'] app('TextEdit').activate() mref = texteditGUI.menu_bars[1].menus mref['File'].menu_items['New'].click() mref['Edit'].menu_items['Paste'].click() mref['Window'].menu_items['Zoom Window'].click() else: generate_form() # Call main function. main() I tried using both 'from appscript import *' and 'import appscript' and it doesn't make a difference. 'from appscript import *' is the way it successfully works when using the command line interpreter. Thanks for any help on this! -Andrés Rojas

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Re: [Pythonmac-SIG] Pythonmac-SIG Digest, Vol 49, Issue 22
by has May 29, 2007

May 29, 2007

Nicholas Riley wrote: > I couldn't figure out a way to get a remote application to launch > without using the Finder. This is correct. Apple events can't start processes; appscript uses the Process Manager to launch applications as needed, but this only works for the current user. You need to send an 'open' event to Finder or System Events (if they're running), or use the 'open' utility (if ssh access is available), or something like that. > Appscript fails because it can't get the > app's terminology; with terms=False on a non-running TextEdit, I get > "AppData instance has no attribute 'path'". That particular error message is due to a bug - it should give an 'application not running' error instead. It should be fixed in 0.17.3 if you want to grab a copy from svn: svn checkout http://svn.macosforge.org/repository/appscript/py- appscript/tags/py-appscript-0.17.3 has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org http://appscript.sourceforge.net/objc-appscript.html

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Re: [Pythonmac-SIG] CGI + appscript newbie question/problem
by has May 28, 2007

May 28, 2007

Hamish Allan wrote: > When you run appscript at the command line and the little rocket > appears in the Dock, that's Python connecting to the window server -- > through which Apple events are managed. I'm not sure why Python's command line interpreter upgrades itself to a full GUI process when appscript runs - appscript hasn't needed a Window Manager connection since 0.16.0. I think the interpreter's auto-GUIfication code is just a bit over-sensitive: IIRC, it gets set off by the Process Manager calls when appscript connects to an application, although those don't require a GUI connection either. I'd agree it's probably a security issue due to Apache (presumably) running as a restricted user, though as to why it's the import that fails, I'd really need to see a traceback. has -- http://appscript.sourceforge.net http://rb-appscript.rubyforge.org http://appscript.sourceforge.net/objc-appscript.html

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Testing applications with console input?
by Kevin Horton May 22, 2007

May 22, 2007

I'm working on a small application that will respond to user input via the console. It is a very simple interface, with user input via "raw_input()", and the application produces result via "print" statements. I'm using python 2.5.1 on OS X, installed via Fink, but I'll also use the application with Movable Python 2.4.3 on Windows. I've got unit tests for many of the discrete units, but I still need to write some tests for the user interface, to help catch problems when refactoring code, etc. I've searched the web, but I can't find any description of how to write tests for such a user interface. Any advice would be appreciated. Kevin Horton Ottawa, Canada

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Re: [Pythonmac-SIG] Stupid question
by Kent Johnson May 21, 2007

May 21, 2007

Calder Coalson wrote: >> That is exactly what modules and imports let you do. > It really doesn't seem to be doing that, because I import a bunch of > stuff and define it in my main file, then I import another file and it > can't use the global variables and the modules imported in the main file. Right. Each module has its own namespace. That is not the same as having its own interpreter. Any modules and variables you want to use in a module have to be imported or otherwise made available to that module. Python "global" variables are not really global, they have module scope - they are only available in the module in which they are defined (or imported, which is a way of defining something). >> It sounds like maybe your program might not be very well organized. > Probably true, :D Anyway, what I've done is right a small program to > lop all the code together. Here: > > import os > > final = "" > def load(name): > new = open(os.path.join("Components", name)) > globals()["final"] = globals()["final"]+new.read()+"\n\n\n\n" > > load("StartCode.py") > # load more loops here > load("StartLoop.py") > > program = open(os.path.join("Compiled.py"), "w") > program.write(final) > > import Compiled > os.remove(os.path.join("Compiled.py")) > os.remove(os.path.join("Compiled.pyc")) > > That seems to do the trick. Well if you're happy maybe I should leave well enough alone but this sure looks ugly to me. I strongly recommend that you learn how to use the tools Python gives you to solve this problem. Misunderstanding the tool and saying "it doesn't work" and kludging up your own way to solve the problem is like trying to use a hammer the wrong way around, finding it doesn't work, and using a rock instead. You will be better off in the long run learning the right way to use a hammer. >> Maybe you need to break up your program into functions or classes. >> Then some of these functions or classes could be put into separate >> modules. > I'll try to do that in the future, but I'm relatively new to Python, and > I'm still learning how I can effectively take advantages of classes and > stuff. Start with functions. My guess is that you could find some bits of functionality that could be broken out into functions. Some of the functions would probably be related and could go into separate modules. You might want to join the python-tutor list: http://mail.python.org/mailman/listinfo/tutor Kent

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Re: [Pythonmac-SIG] Stupid question
by Andrea Tomadin May 21, 2007

May 21, 2007

Calder Coalson wrote: > All I want to do is split up my file into multiple files, Why not a simple execfile("otherprogram.py")? All the code in otherprogram.py is executed as if it was typed into the main program. No namespace issues or import problems. (Not OOP either, in fact!) Hope this helps, Andrea

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Re: [Pythonmac-SIG] Stupid question
by Kent Johnson May 20, 2007

May 20, 2007

Calder Coalson wrote: > Ok, I have a program with multiple different states, but it does, (to > some extent) run linearly. All I want to do, is to be able to take > chunks of the program and put it in separate files so I don't have to > scroll through a couple thousand lines of stuff every time I want to > find the right part of the code. I guess I could just right a master > program that takes all of the text files and smashes them together and > then runs it. But is there any other way to do it? That is exactly what modules and imports let you do. It sounds like maybe your program might not be very well organized. Maybe you need to break up your program into functions or classes. Then some of these functions or classes could be put into separate modules. > > The problem with modules is that they run in their own Python shell. No, they run in the same process as the module that imports them. > Libraries I've imported in the main program and variables I've > defined there aren't accessible in the module. What I really need is > just a > run_file("/Users/calderco/Pygame/T-Board/thefile.py") Right, modules do have their own namespace. You can import the modules you need. Variables you need access to can be passed as parameters to functions defined in a module. A tutorial on modules: http://www.freenetpages.co.uk/hp/alan.gauld/ (Modules and Functions section) Kent > > I guess the assimilator program shouldn't take that long, but it > really seems like there should be an easy way to do this. > > Thanks for the help, > -Calder > > > On May 20, 2007, at 6:37 AM, Kent Johnson wrote: > >> Calder Coalson wrote: >>> I've tried import, but that doesn't work because the thing has to >>> be completely independent. All I want to do is split up my file >>> into multiple files, >> >> These requirements seem a bit contradictory. If you have one program >> that you want to split into multiple modules, import is the usual >> mechanism for doing that. What kind of independence are you looking >> for? If you truly need the programs to run in separate processes then >> the other answers are on the right track. Otherwise I'm not so sure >> what it is you need. >> >> Kent > >

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