This looks like a bug. Numerical values should be evaluated in inequalities.
Aaron Meurer
On Thu, Jul 9, 2015 at 5:23 PM, Paul Royik <distantjob...@gmail.com> wrote:
> And another one:
>
> File "/home/mysite/lib/python2.7/sympy/core/relational.py", line 103, in
> __nonzero__
> raise TypeError("cannot determine truth value of\n%s" % self)
>
> TypeError: cannot determine truth value of
> 3*pi/8 >= 7*pi/8
>
>
> On Friday, July 10, 2015 at 1:12:06 AM UTC+3, Paul Royik wrote:
>>
>> Traceback is quite short:
>>
>> File "/home/mysite/lib/python2.7/sympy/core/relational.py", line 103, in
>> __nonzero__
>> raise TypeError("cannot determine truth value of\n%s" % self)
>>
>> TypeError: cannot determine truth value of
>> pi/5 < 0
>>
>> On Thursday, July 9, 2015 at 10:26:53 PM UTC+3, Aaron Meurer wrote:
>>>
>>> Is there a traceback with the error? Is it coming from SymPy code or
>>> your own code?
>>>
>>> Aaron Meurer
>>>
>>> On Thu, Jul 9, 2015 at 12:40 AM, Paul Royik <distan...@gmail.com> wrote:
>>> > I'm using sympy on my site together with django and mod_wsgi.
>>> > From time to time (i.e. this error is not reproducible) I've got the
>>> > following error:
>>> > TypeError: cannot determine truth value of
>>> > 3*pi/8 >= 7*pi/8
>>> >
>>> > In other words, error is raised when I try to compare numerical values.
>>> > Can someone explain why is that and how can I avoid it?
>>> >
>>> > Thank you.
>>> >
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