[PEAK] Trellis throws an error related to metaclass in python 2.6.5

[Christopher Stelma]

After seeing same error and the update to DecoratorTools in response,
I applied a slightly different fix(?) for the problem.

Instead of killing the ABCMeta methods in the definition of
classy_class, in the three methods of classy, I replaced references to
"type" with "super(classy_class, classy_class)".  This lets
ABCMeta.__new__ run when ABCMeta is the base class to do whatever
setup is necessary, and skips straight back to type.__new__ when not.

I'm not using any ABC's (directly), so is there any specific reason to
disable it for classy sublclasses?

On Thu, May 6, 2010 at 2:25 AM, Peter Damoc <pdamoc at gmail.com> wrote:
> It works! Thanks P.J. !
>
> (I did a manual checkout and setup.py install)
>
> I still get 2 deprecation warnings:
>
> C:\Python26\lib\site-packages\trellis-0.7a3_dev_r2610-py2.6.egg\peak\events\trellis.py:4:
> DeprecationWarning: the sets module is deprecated
> C:\Python26\lib\site-packages\trellis-0.7a3_dev_r2610-py2.6.egg\peak\events\trellis.py:509:
> DeprecationWarning: object.__new__() takes no parameters
>
> But I guess that's OK for now. :)
>
> Keep up the good work!
> Peter
>
> On Wed, May 5, 2010 at 9:11 PM, P.J. Eby <pje at telecommunity.com> wrote:
>> FYI, I've updated the SVN versions of Trellis and DecoratorTools to try to
>> fix this problem.  Use:
>>
>> easy_install svn://svn.eby-sarna.com/svnroot/DecoratorTools/
>> easy_install svn://svn.eby-sarna.com/svnroot/Trellis/
>>
>> to get the updated versions.  (Note: you'll need a Subversion client
>> installed on your PATH.)  Please let me know if these updated versions fix
>> the problem.  Thanks.
>>
>> At 03:39 PM 5/5/2010 +0300, Peter Damoc wrote:
>>>
>>> This is the relevant part of the traceback:
>>>
>>>
>>>    from peak.events import trellis
>>>  File
>>> "C:\Python26\lib\site-packages\trellis-0.7a2-py2.6.egg\peak\events\trellis.py",
>>> line 1231, in <module>
>>>    class List(UserList.UserList, Component):
>>>  File "C:\Python26\lib\abc.py", line 79, in __new__
>>>    cls = super(ABCMeta, mcls).__new__(mcls, name, bases, namespace)
>>> TypeError: Error when calling the metaclass bases
>>>    metaclass conflict: the metaclass of a derived class must be a
>>> (non-strict) subclass of the metaclasses of all its bases
>>>
>>>
>>> I've installed Trellis via easy_install.exe
>>>
>>> What can I do to get past this error?
>>> I've searched the net and found something about peak.utils.Meta but I
>>> don't know how to get that installed on my machine. The peak package
>>> seams to be 5 years old and throws an error about  vcvarsall.bat
>>>
>>>
>>> Thank you in advance.
>>> Peter
>>>
>>> --
>>> There is NO FATE, we are the creators.
>>> blog: http://damoc.ro/
>>> _______________________________________________
>>> PEAK mailing list
>>> PEAK at eby-sarna.com
>>> http://www.eby-sarna.com/mailman/listinfo/peak
>>
>>
>
>
>
> --
> There is NO FATE, we are the creators.
> blog: http://damoc.ro/
> _______________________________________________
> PEAK mailing list
> PEAK at eby-sarna.com
> http://www.eby-sarna.com/mailman/listinfo/peak
>



-- 
Christopher Stelma
Digsby Developer - digsby.com
chris at digsby.com