Hello, On Wed, Oct 31, 2012 at 08:07:26AM -0500, Matthew Rocklin wrote: > > Unfortunately, when I go to check if expr is commutative > > >>> expr.is_commutative > AttributeError ... > > I get an AttributeError. This is because is_commutative is glommed onto the > object in the constructor rather than being a class variable or a > function/property. I've noticed in the code that is_commutative has been > special cased for performance reasons. > > What is the best way around this?
While thinking over is_commutative and is_associative, it has occurred to me that we should maybe try to derive something like CommutativeOp from Basic to mimic AssocOp. This should sort out your problem, but I'm not sure as to how much effort this may require. Sergiu -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
