[Pythonmac-SIG] PyObjC - Apple sample code

Glyph glyph at twistedmatrix.com
Fri Apr 28 20:13:50 EDT 2017


Relying on the system Python for this sort of stuff has always guaranteed you'd have an out-of-date version of all of your dependencies.

The availability of wheels (thanks again Ronald!!!) for pyobjc means that you don't need the biggest impediment to users installing stuff, which is a C compiler.  If you're building stuff for distribution to non-technical folks, build it with your own version of python (3) and ship it with py2app, not by copying scripts around.

If there are things that make this more painful than just copying individual scripts, it's probably best to figure out how to get those addressed with the PyPA community.

-glyph

> On Apr 28, 2017, at 4:20 AM, Ben Byram-Wigfield <ben.bw at me.com> wrote:
> 
> I ran the installer package for the latest python 2.7, and then used easy_install to install PyObjC.
> I get the same errors on two separate Macs. What should I do to fix the installation?
> 
> Does Apple not have plans to include (all of) the latest PyObjC? That’s rather sad. The reason I was attracted to creating ObjC python scripts was that they could run on any Mac.
> 
> Thanks
> 
> Ben
> 
> 
>> On 28 Apr 2017, at 08:07, Ronald Oussoren <ronaldoussoren at mac.com> wrote:
>> 
>> 
>>> On 27 Apr 2017, at 10:17, Ben Byram-Wigfield <ben.bw at me.com> wrote:
>>> 
>>> I tried the repository browser there, and the version of parse_page_contents.py still doesn’t work for me. I’m using the latest downloaded versions of python 2.7 and PyObjC. I also tried using the default OS X versions.
>>> The errors are in the attached file.
>>> 
>> The PyObjC 3.2 error at the top of the file seems to indicate that your Python installation is broken, PyObjC imports the stdlib io module and that causes and error.
>> 
>> The PyObjC 2.5 error is due to general brokeness of the system installation of PyObjC. PyObjC 2.5 is ancient and not something I support anymore, furthermore (IIRC) Apple doesn’t ship all of PyObjC. The error you’re getting indicates that the framework wrappers are incomplete.
>> 
>> BTW. If you are new to Python I’d look into using Python 3.6 instead, both because that has less change to run into problems due to interference between the system install of Python 2.7 and a manual installation, and because the Python community is moving ever faster to Python 3.
>> 
>> Ronald
>> 
> 
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