OK.  I will send in a patch to SymPy that fixes this upstream.

Aaron Meurer

On Thu, Jun 30, 2011 at 6:05 PM, Francois Bissey
<[email protected]> wrote:
>> I think I found it:
>> class Infinity(RationalConstant):
>>     __metaclass__ = Singleton
>>
>> defines
>>     def _sage_(self):
>>         import sage.all as sage
>>         return sage.oo
>>
>> But:
>> class NegativeInfinity(RationalConstant):
>>     __metaclass__ = Singleton
>>
>> doesn't have an equivalent statement for _sage_ so I guess this bit is
>> used: p = -1
>>     q = 0
>>
>> I'll add a sage bit in there and see if it fixes the problem.
>>
> Yes, I just added
>     def _sage_(self):
>         import sage.all as sage
>         return -(sage.oo)
>
> in class NegativeInfinity and now the only part of that test that fails is
> a trivial bit about ordering.
>
> Francois
>
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