Le jeudi 15 avril 2010 à 13:46 -0600, Aaron S. Meurer a écrit : > - I think PrimeField should subclass from Expr or Basic (though I could be > wrong on this one). > No, it should not. Instances of PrimeField are equivalent to classes like Integer or Rational. I think sympy is not quite ready for this yet. In the current model, PrimeField "should" be a metaclass and can only subclass BasicType (which is empty). It is its instances which "should" be subclasses of Basic. And yes, this would probably be very messy.
So, it is reasonable to implement finite fields outside the main hierarchy (note that polynomials are also outside the main hierarchy, ultimately for the same reason). When sympy grows ways to manipulate types, they can be brought back into the fold. > - How is this different from the GF > implementation in polys? Should this rather just be providing a user > interface to that? I think it's the opposite: polys should interface with the generic implementation. Ultimately, the implementations should be merged, but the code should move out of polys and into the new module. Ronan -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sy...@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
