#18578: Python 3 preparation: Special function __div__() is used no more in Py3
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Reporter: | Owner: wluebbe
wluebbe | Status: new
Type: | Milestone: sage-6.8
enhancement | Resolution:
Priority: major | Merged in:
Component: misc | Reviewers:
Keywords: | Work issues:
python3 | Commit:
Authors: | 9701674d59213529ef6476ecc973a8f2cf69bfb3
Report Upstream: N/A | Stopgaps:
Branch: |
u/wluebbe/18578 |
Dependencies: |
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Comment (by jdemeyer):
Replying to [comment:9 wluebbe]:
> Not a complete success :-( . I am going into a never ending recursion:
> {{{
> RuntimeError: maximum recursion depth exceeded while calling a
Python object
> **********************************************************************
> 1 item had failures:
> 2 of 9 in sage.ext.fast_callable.Expression.__truediv__
> }}}
If you look at the traceback, you see why:
{{{
File "sage/ext/fast_callable.pyx", line 918, in
sage.ext.fast_callable.Expression.__div__
(build/cythonized/sage/ext/fast_callable.c:7203)
return PyNumber_TrueDivide(self, other)
File "sage/structure/element.pyx", line 2025, in
sage.structure.element.RingElement.__truediv__
(build/cythonized/sage/structure/element.c:18064)
return self.__div__(right)
File "sage/structure/element.pyx", line 2038, in
sage.structure.element.RingElement.__div__
(build/cythonized/sage/structure/element.c:18205)
return coercion_model.bin_op(self, right, div)
File "sage/structure/coerce.pyx", line 1040, in
sage.structure.coerce.CoercionModel_cache_maps.bin_op
(build/cythonized/sage/structure/coerce.c:9052)
res = mul_method(x)
}}}
The problem is caused by this code in `element.pyx`:
{{{
def __truediv__(self, right):
# in sage all divs are true
if not isinstance(self, Element):
return coercion_model.bin_op(self, right, div)
return self.__div__(right)
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/18578#comment:12>
Sage <http://www.sagemath.org>
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