pyobjc-dev

[Pyobjc-dev] What did I do wrong?

[Deirdre S. M. <de...@de...>]

% /usr/local/bin/python setup.py install
running install
running build
running build_ext
building 'pyobjc' extension
Traceback (most recent call last):
   File "setup.py", line 23, in ?
     ext_modules = [Extension("pyobjc", sourceFiles)],
   File "/usr/local/lib/python2.0/distutils/core.py", line 157, in setup
     raise SystemExit, "error: " + str(msg)
SystemExit: error: unknown file type '.m' (from 'OC_PythonBundle.m')

(I'd have searched the archives on this one more carefully, but 
they've been down for an hour now. Remind me to wget them tomorrow)

Re: [Pyobjc-dev] What did I do wrong?

[Deirdre S. M. <de...@de...>]

OK, I figured that out -- now I'm up to the problem Steve had last 
November with not having pyobjc import correctly. I finally just 
chickened out and grabbed his binaries so I could get something done.


>% /usr/local/bin/python setup.py install
>running install
>running build
>running build_ext
>building 'pyobjc' extension
>Traceback (most recent call last):
>   File "setup.py", line 23, in ?
>     ext_modules = [Extension("pyobjc", sourceFiles)],
>   File "/usr/local/lib/python2.0/distutils/core.py", line 157, in setup
>     raise SystemExit, "error: " + str(msg)
>SystemExit: error: unknown file type '.m' (from 'OC_PythonBundle.m')

-- 
--
_Deirdre     Stash-o-Matic: http://weirdre.com      http://deirdre.net
"I love deadlines. I like the whooshing sound they make as they fly by."
                                                          - Douglas Adams

[Pyobjc-dev] Confused on syntax

[Deirdre S. M. <de...@de...>]

I realize that I asked Steve a lot of questions and others might be 
able to answer and/or shed some light on. My ObjC was never really 
very good (I'm trying to work on that <g>) and I'm trying to make the 
paradigm leap at the same time.

I'm trying to create a Python version of the Currency Converter 
tutorial (start smallish, I figured). I figured I'd keep the two 
classes (Converter and ConverterController) as intended and wrestle 
with the main function after that, cribbing heavily from Steve.

Converter.py looks right (and the python interpreter doesn't 
complain). But when it gets to the ConverterController class (where 
all the fun is), my understanding just stops cold.

The .h file is:

#import <Cocoa/Cocoa.h>

@interface ConverterController : NSObject
{
     IBOutlet id converter;
     IBOutlet id dollarField;
     IBOutlet id rateField;
     IBOutlet id totalField;
}
- (IBAction)convert:(id)sender;
@end

It seems to me that this has got to have a syntax something like:

# ConverterController.py

import pyobjc
import Converter

class ConverterController(pyobjc.runtime.NSObject):
	def __init__(self):
		self.converter = pyobjc.runtime.IBOutlet(id)
		self.dollarField = pyobjc.runtime.IBOutlet(id)
		self.rateField = pyobjc.runtime.IBOutlet(id)
		self.totalField = pyobjc.runtime.IBOutlet(id)
	def convert(sender):
		amt = 	self.dollarField.floatValue()
		rate = 	self.rateField.floatValue()
		total =	self.converter( amt, rate )
		self.totalField.setFloatValue(total)
		self.rateField.selectText(self.rateField)

Am I even close here?

Re: [Pyobjc-dev] Confused on syntax

[Steven D. M. <sd...@mi...>]

[ I know our mails have crossed, and I addressed some of this
  in the earlier, longer message, but to distill the problems
  down more concisely: ]


> class ConverterController(pyobjc.runtime.NSObject):

[1]
That won't work for the same reason you can't directly
subclass Python lists or dictionaries. They are objects,
but not classes. Look in you're Python lib for UserDict.py
and UserList.py -- which are examples of class wrappers
around a non-class object. You would need to do something
similar for Cocoa classes -- which are not Python classes.

 We're going to look for a general solution to this problem:
Jim Fulton and Don Beaudry both (I think) did some work on
"extension classes" and other ways around this problem in
Python -- and I think Python is moving towards a more
general solution eventually.
 We might try fixing it without waiting for Python 2.X to
fix the problem (looking at those previous attempts).
 We might be able to add more introspection to the bridge
to make it easier to automatically generate, or make a
generic one-size-fits-all class wrapper.


[2]
 I haven't yet been able to load and reanimate an IB Nib file
from Python. I think this is a much easier problem than [1]
above. I'll try to post what I've tried and what didn't work
in case anyone else wants to give it a try.

-- Steve Majewski

Re: [Pyobjc-dev] Confused on syntax

[Deirdre S. M. <de...@de...>]

>That won't work for the same reason you can't directly
>subclass Python lists or dictionaries. They are objects,
>but not classes. Look in you're Python lib for UserDict.py
>and UserList.py -- which are examples of class wrappers
>around a non-class object. You would need to do something
>similar for Cocoa classes -- which are not Python classes.


Yeah, figured that out from your prior email. Rats. So much for cheap 
and easy. :)

>  We're going to look for a general solution to this problem:
>Jim Fulton and Don Beaudry both (I think) did some work on
>"extension classes" and other ways around this problem in
>Python -- and I think Python is moving towards a more
>general solution eventually.
>  We might try fixing it without waiting for Python 2.X to
>fix the problem (looking at those previous attempts).
>  We might be able to add more introspection to the bridge
>to make it easier to automatically generate, or make a
>generic one-size-fits-all class wrapper.

It seems to me that somehow it could be done if one really compiled 
python with ObjC (this is intuition) and tweaked the process of 
building a bit. Failing that, the generic wrapper sounds like a good 
approach.


>  I haven't yet been able to load and reanimate an IB Nib file
>from Python. I think this is a much easier problem than [1]
>above. I'll try to post what I've tried and what didn't work
>in case anyone else wants to give it a try.


Please -- it's a dull afternoon. :)


-- 
--
_Deirdre     Stash-o-Matic: http://weirdre.com      http://deirdre.net
"I love deadlines. I like the whooshing sound they make as they fly by."
                                                          - Douglas Adams

Re: [Pyobjc-dev] Confused on syntax

[Deirdre S. M. <de...@de...>]

At 2:42 PM -0400 4/27/01, Steven D. Majewski wrote:
>[2]
>  I haven't yet been able to load and reanimate an IB Nib file
>from Python. I think this is a much easier problem than [1]
>above. I'll try to post what I've tried and what didn't work
>in case anyone else wants to give it a try.

Steven, I never did see these concepts, can you post them? ::whimper:: :)
-- 
_Deirdre     Stash-o-Matic: http://weirdre.com      http://deirdre.net
Macintosh Developer (seeking work): Will work for Cocoa
"I love deadlines. I like the whooshing sound they make as they fly by."
                                                          - Douglas Adams

Re: [Pyobjc-dev] What did I do wrong?

[Steven D. M. <sd...@mi...>]

What version of Python are you using ? One of the beta releases?
My patch was accepted into the 2.1 final, so that should work.

My copy of Python2.1/lib/distutils/unixccompiler.py  has a line:

    src_extensions = [".c",".C",".cc",".cxx",".cpp",".m"]

in the beta (and maybe the final candidate) releases, the ".m" is
missing.

-- Steve.

On Fri, 27 Apr 2001, Deirdre Saoirse Moen wrote:

> OK, I figured that out -- now I'm up to the problem Steve had last
> November with not having pyobjc import correctly. I finally just
> chickened out and grabbed his binaries so I could get something done.
>
>
> >% /usr/local/bin/python setup.py install
> >running install
> >running build
> >running build_ext
> >building 'pyobjc' extension
> >Traceback (most recent call last):
> >   File "setup.py", line 23, in ?
> >     ext_modules = [Extension("pyobjc", sourceFiles)],
> >   File "/usr/local/lib/python2.0/distutils/core.py", line 157, in setup
> >     raise SystemExit, "error: " + str(msg)
> >SystemExit: error: unknown file type '.m' (from 'OC_PythonBundle.m')
>