🌐 Mailman 3 September 2004 - Pythonmac-SIG - python.org

FBAs with bundlebuilder?
by has Sept. 20, 2004

Sept. 20, 2004

Hi folks, Just had a cracking idea for stealth-selling MacPython to AppleScripters: provide an easy way to create scriptable faceless background applications in Python. Far faster than executing Python scripts via 'do shell script', far easier than writing C-based osaxen. Basically a terminology-driven wrapper around aem.receive that allows users to define their own application commands and enumerations in a bundlebuilder-based FBA that they can then drop into their ScriptingAdditions folder and call from AppleScripts. AppleScripters are perenially starved for decent language extension mechanisms, so I can see them potentially going nuts for something like this - and once we've got that first hook into them we can gradually start selling them on Python as a general alternative to AppleScript. Subverting and stealing their users by the back door, if you like. ;) I'm working on the API at the moment, mostly trying to figure the best way to incorporate scripting terminology - I'm thinking decorators might be a good way to provide callbacks with metadata that can be retrieved automatically via introspection, allowing users to write stuff like: __name__ = 'Foo.app' class ae_SomeSuite: ae_suiteinfo = '????', 'Some Suite', 'Various commands and stuff.' @ae_handler('Pyth', 'Mult', 'multiply_string', 'Multiply a string', ('The result.', 'TEXT'), ('----', 'direct', 'The string to multiply.', 'TEXT'), ('Cnte', 'by', 'Number of times to multiply the string (default=2).', 'long', kOptional)) def ae_multiply(self, direct, by=2): try: return AEResult(direct * by) except: return AEError(-1700) The can then drag-n-drop this script onto an applet that automatically generates an FBA titled 'Foo.app' ready for use. The app generates an aete on demand when it receives an <<event ascrgdte>>, so users don't need to create their own terminology resources; e.g. the above example would produce the following terminology: Some Suite : Various commands and stuff. multiply string : Multiply a string. multiply string string -- The string to multiply. [by : integer] -- Number of times to multiply the string (default=2). Result : string -- The result. What I mostly need right at the moment is a way to create FBAs from bundlebuilder, or something similar in Cocoa/ObjC would do just as well (though I'd want to avoid PyObjC to keep the number of 3rd-party dependencies down). If anyone knows how to do this, or can provide me with something suitable, it'd be a great help. Once I've finalised the API (won't be long), I can hammer out some examples and propaganda and we can start selling it to the AS community. Cheers, has -- http://freespace.virgin.net/hamish.sanderson/

3 7

time.clock() versus time.time() significant digits
by Kevin Altis Sept. 19, 2004

Sept. 19, 2004

I was looking at someone else's code today that had some time.clock() calls used to figure out how long an operation took. I was surprised to see on the Mac that there were only two significant digits after the decimal point compared to what I saw on Windows. Normally, I use time.time() for calculating time taken on an operation and my numbers on both systems seemed to have the same resolution. Anyway, I opened up the shell on the Mac and indeed it appears that time.time() is using more significant digits. Am I just misinterpreting the results here or is this a bug? I'm using the stock Panther Python 2.3. >>> time.time() 1095611259.1935749 >>> time.time() 1095611263.9729979 >>> time.time() 1095611273.4193349 >>> time.clock() 6.8300000000000001 >>> time.clock() 7.75 ka

2 1

Interesting bundlebuilder problem & resolution...
by Bill Hutten Sept. 17, 2004

Sept. 17, 2004

Here's an interesting one: I was working on some changes to a wxPython application, it was running correctly when launched from the command line, etc. So I decide to build a test standalone, using the usual "python buildapp.py --standalone build". Here's what I got: ------------------------------------------------- Traceback (most recent call last): File "buildapp.py", line 8, in ? libs = ["/usr/local/lib/wxPython-2.5.2.8/lib/libwx_macd-2.5.2.dylib"], File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ python2.3/plat-mac/bundlebuilder.py", line 912, in buildapp main(builder) File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ python2.3/plat-mac/bundlebuilder.py", line 899, in main builder.setup() File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ python2.3/plat-mac/bundlebuilder.py", line 437, in setup self.findDependencies() File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ python2.3/plat-mac/bundlebuilder.py", line 628, in findDependencies mf.run_script(self.mainprogram) File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ python2.3/modulefinder.py", line 112, in run_script self.load_module('__main__', fp, pathname, stuff) File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ python2.3/modulefinder.py", line 265, in load_module co = compile(fp.read()+'\n', pathname, 'exec') TypeError: compile() expected string without null bytes ------------------------------------------------- After a bit of freaking out, I determined that the cause was that I had a non 7-bit ASCII character in my Python source. It was a single character, at the end of a line. Interestingly, it was a line that I had copied from a webpage, and for whatever reason Safari had included this character. I used BBEdit's "Zap Gremlins" command to find the offending character and delete it. Once that was done, bundlebuilder.py worked fine. What's odd to me is that the app ran fine from the command-line via "pythonw". It was only when the code was compiled via bundlebuilder that the gremlin character caused a problem. Maybe this'll help someone else... - bill -- bhutten(a)ns.sympatico.ca "God made man, but he used the monkey to do it" - Devo

1 0

/Library vs /System/Library
by Damien JACOMY Sept. 16, 2004

Sept. 16, 2004

Hi Folks ! I had two Python Framework on my machine (OSX panther) : Library/framework/python.framework/... and System/ Library/framework/python.framework/... I remove the first one and /usr/local/bin as it said in the faq. Now, python can be running by IDLE and Python IDE, but I can't use a terminal window, and so Python Launcher. Damien

1 0

\r in string causes eval to fail
by Kevin Altis Sept. 16, 2004

Sept. 16, 2004

I've run into a problem with eval on the Mac and I'm not sure whether it is a bug or expected behavior. The problem is that if \r is used as the line terminator instead of \n then it causes eval to fail. I ran into this while copying and pasting some text to eval and the clipboard had converted my newlines to returns. Here is an example done in the shell. As you can see below, using newlines as a separator is fine, but return (\r) isn't. This would probably only come up on the Mac where return (CR, \r) is the default line terminator, but I didn't know whether universal newlines support was supposed to deal with this kind of issue. >>> s = """{'type':'Button',\r'name':'Button1',\r'position':(10, 10),\r'label':'Button1',\r}""" >>> s2 = s.replace('\r', '\n') >>> eval(s2) {'position': (10, 10), 'type': 'Button', 'name': 'Button1', 'label': 'Button1'} >>> eval(s) Traceback (most recent call last): File "<input>", line 1, in ? File "<string>", line 1 {'type':'Button', 'name':'Button1', 'position':(10, 10), 'label':'Button1', } ^ SyntaxError: invalid syntax >>> ka

8 11

How to debug a non-functioning standalone app?
by Bill Hutten Sept. 16, 2004

Sept. 16, 2004

Hi all: I have a standalone Python app (built with BundleBuilder). It works fine on my development machine, but when I move it to another OSX 10.3.x machine it does not work. When I launch the application, the icon appears momentarily in the dock, and then disappears. I've tried generating the app using --standalone and --semi-standalone, with no success in resolving this. When the app quits nothing is written to console.log, system.log, etc. How can I determine what's causing the problem? Is there something I can add to the Python source to log the errors? Any ideas appreciated... - bill -- bhutten(a)ns.sympatico.ca "God made man, but he used the monkey to do it" - Devo

1 1

Problem with a bundlebuilder application
by Quentin DECAVEL Sept. 15, 2004

Sept. 15, 2004

Hi I have recently met a weird problem using bundlebuilder (I'm quite a newbie, sorry if the question is trivial) : I have a Macpython/Pygame application that runs fine when launched from the command line; I use bundlebuilder, which send me some warnings but I still have a build; when I launch the obtained app by command line (with ./build/Test.app/Contents/MacOS/Test, there is still no problem, but every time I double click the app, it leaves after 5 to 10 seconds I have used the Console to get this error message : init Traceback (most recent call last): File "/Users/odecavel/Desktop/newengine/build/Test.app/Contents/Resources/ Greenhouse.py", line 145, in ? mainloop() File "/Users/odecavel/Desktop/newengine/enginemain.py", line 26, in mainloop curitem._handleevent(fakeevent('init')) File "/Users/odecavel/Desktop/newengine/inventoryfloat.py", line 247, in _handleevent self._handleinit() File "/Users/odecavel/Desktop/newengine/inventoryfloat.py", line 292, in _handleinit self._itemimages.append([item._draw(),None]) File "/Users/odecavel/Desktop/newengine/item.py", line 93, in _draw self._itemsurface = globals.loadfile(parameters.getitempath(), self._file, self._datfile, self._encryption) File "/Users/odecavel/Desktop/newengine/globals.py", line 114, in loadfile tmpsurface = pygame.image.load(os.path.join(filepath, filename)).convert() pygame.error: Couldn't open Greenhouse/items/item.bmp To build the app, I use python buildapp.py build, and here is my buildapp.py : import os from bundlebuilder import buildapp buildapp( name = "Test.app", mainprogram = "Greenhouse.py", includeModules = [], includePackages = ["/Library/Python/2.3/PyObjC/"], libs = [], ) Does anybody have an idea where I did wrong ? Thanks in advance

2 1

Python Robotics?
by Dethe Elza Sept. 14, 2004

Sept. 14, 2004

Has anyone compiled the Python Robotics[1] (the *other* Pyro[2]) for OS X (10.3, builtin Python)? <rant> Why are people still using Swig? It seems like every project using it has a requirement for a specific version down to the third dot (i.e., version x.y.z). </rant> TIA --Dethe All space and matter, organic or inorganic, has some degree of life in it [...] All matter/space has some degree of "self" in it. If either of these claims comes, in future, to be considered true, that would radically change our picture of the universe. --Christopher Alexander

1 0

Re: [Pythonmac-SIG] Where am I ?
by Jerry LeVan Sept. 13, 2004

Sept. 13, 2004

Thanks, That should be enough to get started... Jerry On Sep 13, 2004, at 12:37 PM, Chris Barker wrote: > Jerry LeVan wrote: >> Hi, >> I am fairly new to python, there is a task I need to >> figure out. >> Suppose I have my "main" program in a folder, and various >> support modules in *folders* in the same folder as the >> main program. >> How can I import stuff from the folders? Can I do this >> so that if everything gets moved to a new location, >> the imports will still work? > > What you want to do is make those folders Python packages. All you > need to do to do that is have a __init__.py file in each of them. This > module will get called when you import the package. It can have > initialization stuff it it, or nothing (I usually have a doc string > and pass statement) > > Once you've done that, you can import the modules in the folders like > so: > > import FolderName.Modulename > > or > > from FolderName import Modulename > > Python should look in the directory that the current module is in for > importing (in addition to sys.path), so that should be all there is to > it. If you do need to have Python look in odd places for modules, you > can add any path to sys.path: > > import sys > > sys.path.append("A_new_path") > > -Chris > > > > > > -- > Christopher Barker, Ph.D. > Oceanographer > > NOAA/OR&R/HAZMAT (206) 526-6959 voice > 7600 Sand Point Way NE (206) 526-6329 fax > Seattle, WA 98115 (206) 526-6317 main reception > > Chris.Barker(a)noaa.gov >

1 0

bundlebuilder question: snack (tcl extension)
by Russell E Owen Sept. 13, 2004

Sept. 13, 2004

Any ideas on getting snack (a tcl extension that supports sound) installed in a Python application via bundlebuilder? I think it may have worked at one time (e.g. perhaps with an older version of tcl/tk) but it certainly is not working now. The snack shared library is not copied into the bundle. I've tried various locations for the shared library, but no success so far. Any hints would be gratefully received. Also, any suggestions for a better sound package. All I want to do is play sound queues in a Tkinter-based Python application. (Thus all I want to do is play sound files asynchronously). Snack seems to work, but installation is a bit of a pain. -- Russell

2 2