[PEAK] Re: Trellis + Python 2.6

[Sergey Schetinin]

I'll have to look into using collections.MutableSet, but I won't have
any time for this for a few days. Will report when done.

On Wed, Nov 19, 2008 at 00:55, Sergey Schetinin <maluke at gmail.com> wrote:
> Oh I'm sorry for this, I completely missed that I'm not using
> trellis.Set anymore, so my checks didn't test that at all. So not
> importing the sets module is completely wrong. An equivalent of
> sets.Set doesn't seem to be available in py2.6 from a non-deprecated
> module, so this can either be resolved by copying the relevant parts
> of Set implementation into trellis or adding a
> warnings.simplefilter('ignore', ...), which one would you prefer?
>
> On Wed, Nov 19, 2008 at 00:24, Phillip J. Eby <pje at telecommunity.com> wrote:
>> I would be rather surprised if this patch is actually working correctly for
>> any Python version (except ones with no built-in 'set' type).  The reason
>> trellis.Set inherits from sets.Set is because I rely on some of the base
>> class methods to call inherited methods; it seems rather unlikely that this
>> constraint is kept to by the C version of the set type.
>>
>> Have you tried, e.g., iterating over a Set that inherits from 'set' and
>> seeing whether that actually creates a dependency on the object, for
>> example?  trellis.Set inherits __iter__ from its base class, expecting that
>> it will iterate the ._data attribute.  This would be the sort of thing I'd
>> expect to fail.
>>
>> Hm, in fact, a quick test of your patch shows that it fails on this line
>> anyway:
>>
>>            sets.Set._update(self, iterable)
>>
>> Because even if you change this to a super call or use set._update, there is
>> no such method on C set objects.
>>
>> At 11:04 PM 11/18/2008 +0200, Sergey Schetinin wrote:
>>>
>>> Here's the patch. I also left two more changes in:
>>>  - cancel the rule if assigned
>>>  - log undo for new Component cells
>>>
>>> On Tue, Nov 18, 2008 at 20:23, Sergey Schetinin <maluke at gmail.com> wrote:
>>> > I've only checked with python 2.5, but it should work with others too,
>>> > because it basically only chages where things are imported etc. I'll
>>> > send it when I get to my desktop.
>>> >
>>> > On Tue, Nov 18, 2008 at 18:10, Phillip J. Eby <pje at telecommunity.com>
>>> > wrote:
>>> >> At 01:25 PM 11/18/2008 +0200, Sergey Schetinin wrote:
>>> >>>
>>> >>> > Issue 1:
>>> >>> > UserList.UserList now has a metaclass, so trellis.List needs to
>>> >>> > redefine its metaclass to inherit from it
>>> >>>
>>> >>> > Issue 2:
>>> >>> > trellis.py imports `sets` module which is deprecated and results in
>>> >>> > a
>>> >>> > warning.
>>> >>>
>>> >>> Issue 3:
>>> >>>
>>> >>> peak\events\trellis.py:511: DeprecationWarning: object.__new__() takes
>>> >>> no parameters
>>> >>>  return ReadOnlyCell.__new__(cls, rule, value, discrete)
>>> >>>
>>> >>>
>>> >>> If you don't have py2.6 installed, let me know and I'll send the patch
>>> >>> with relevant changes.
>>> >>
>>> >> Does your patch still work with older Pythons?
>>
>>
>
>
>
> --
> Best Regards,
> Sergey Schetinin
>
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-- 
Best Regards,
Sergey Schetinin

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