Am Mittwoch, 7. Dezember 2016 01:43:09 UTC schrieb tha...@debian.org:
>
> On 12/07/2016 01:27 AM, François Bissey wrote:
> > On 07/12/16 12:20, tha...@debian.org <than...@debian.org> wrote:
> >> Hi sage-devel,
> >>
> >> we're almost ready to upload Sage to Debian (in fact we basically have
> >> to upload it this week to make sure it's included in the next Debian
> >> release).
> >>
> >> However, on Sunday python 2.7.13rc1 was uploaded to Debian and now we
> >> are facing a bug that I didn't quite manage to work around yet and that
> >> blocks any development at the moment.
> >>
> >> This happens whenever Unknown is imported, meaning during the docbuild
> >> and when starting sage:
> >>
> >> ...
> >> from sage.misc.unknown import Unknown
> >> File
> >> "<BUILDDIR>/usr/lib/python2.7/dist-packages/sage/misc/unknown.py", line
> >> 164, in <module>
> >> Unknown = UnknownClass()
> >> File "sage/misc/classcall_metaclass.pyx", line 330, in
> >> sage.misc.classcall_metaclass.ClasscallMetaclass.__call__
> >> (<CYTHONIZED>/sage/misc/classcall_metaclass.c:1413)
> >> File "sage/misc/cachefunc.pyx", line 1059, in
> >> sage.misc.cachefunc.CachedFunction.__call__
> >> (<CYTHONIZED>/sage/misc/cachefunc.c:6080)
> >> File
> >>
> "<BUILDDIR>/usr/lib/python2.7/dist-packages/sage/structure/unique_representation.py",
>
>
> >>
> >> line 1022, in __classcall__
> >> instance = typecall(cls, *args, **options)
> >> File "sage/misc/classcall_metaclass.pyx", line 497, in
> >> sage.misc.classcall_metaclass.typecall
> >> (<CYTHONIZED>/sage/misc/classcall_metaclass.c:1862)
> >> TypeError:
> sage.misc.fast_methods.WithEqualityById.__new__(UnknownClass)
> >> is not safe, use object.__new__()
> >>
> >> I'm pretty sure it's caused by the change of
> >> https://bugs.python.org/issue5322
> >> which is included in python 2.7.13rc1.
> >>
> >> I hope you can help me to fix this, or at least provide a workaround.
> >>
> >
> > What did you try so far?
> > The most obvious thing to try, as far as I can see, is to add
> > __new__ = object.__new__()
> > before
> > def __init__(self):
> > in sage/misc/unknown.py
> >
> > Francois
> >
>
> I created a minimal cython example with classes and cdef classes that
> inherit from each other in the same way as here to see if this is caused
> by WithEqualityById being a cdef class. In the example everything worked
> as it should.
>
> Just because it appears in the error message I also tried replacing the
> two
> (<PyTypeObject*>type).tp_call(cls, args, kwds)
> in
> sage/misc/classcall_metaclass.pyx
> by
> type.__call__(cls, *args, **kwds).
>
> That didn't help either.
>
> I'll try your suggestion next, thanks.
>
> Best, Tobias
>
When setting __new__ = object.__new__() for UnknownClass it goes on to the
next similar error:
...
File
"<BUILDDIR>/usr/lib/python2.7/dist-packages/sage/categories/sets_cat.py",
line 2752, in <module>
cartesian_product = CartesianProductFunctor()
File "sage/misc/classcall_metaclass.pyx", line 330, in
sage.misc.classcall_metaclass.ClasscallMetaclass.__call__
(<CYTHONIZED>/sage/misc/classcall_metaclass.c:1413)
File "sage/misc/cachefunc.pyx", line 1059, in
sage.misc.cachefunc.CachedFunction.__call__
(<CYTHONIZED>/sage/misc/cachefunc.c:6080)
File
"<BUILDDIR>/usr/lib/python2.7/dist-packages/sage/structure/unique_representation.py",
line 1022, in __classcall__
instance = typecall(cls, *args, **options)
File "sage/misc/classcall_metaclass.pyx", line 497, in
sage.misc.classcall_metaclass.typecall
(<CYTHONIZED>/sage/misc/classcall_metaclass.c:1862)
TypeError:
sage.misc.fast_methods.WithEqualityById.__new__(CartesianProductFunctor) is
not safe, use sage.categories.functor.Functor.__new__()
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