But this can't be reproduced. It is a bug from time to time. How can this be possible?
On Friday, July 10, 2015 at 1:49:56 AM UTC+3, Aaron Meurer wrote: > > 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 <[email protected] > <javascript:>> 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 <[email protected]> > 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. > >>> > > >>> > -- > >>> > You received this message because you are subscribed to the Google > >>> > Groups > >>> > "sympy" group. > >>> > To unsubscribe from this group and stop receiving emails from it, > send > >>> > an > >>> > email to [email protected]. > >>> > To post to this group, send email to [email protected]. > >>> > Visit this group at http://groups.google.com/group/sympy. > >>> > To view this discussion on the web visit > >>> > > >>> > > https://groups.google.com/d/msgid/sympy/8997bc44-a5d5-42d8-b818-32bc5c0153b8%40googlegroups.com. > > > >>> > For more options, visit https://groups.google.com/d/optout. > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to [email protected] <javascript:>. > > To post to this group, send email to [email protected] > <javascript:>. > > Visit this group at http://groups.google.com/group/sympy. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/sympy/f1d7e20f-1c53-411d-a9eb-1e56a5246cc2%40googlegroups.com. > > > > > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/aaa092c6-c8b4-41ba-9d80-ec575ae85df5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
