Bengt Richter wrote: > you can do what you like, pretty much. I.e., > > cas = CAS() > cas.a # like your plain a, where you said "that's it" > > > cas.a, cas.b = cas.Expr(), cas.Expr() > (cas.a + cas.b)/cas.c > > Etc.
Hmmm... feels like a good idea if extended to use properties as special constructors: >>> expr = CAS(Expr) >>> expr.a a >>> type(expr.a) <type 'Expr'> >>> expr.a+expr.b a+b or a bit shorter if Expr becomes the "master algebra": >>> _ = CAS(Expr) >>> _.a + _.b a+b Regarding that an object oriented CAS will mix an arbitray number of algebras/namespaces that use algebraic operators homogenously referencing namespaces is a reasonable for providing clarity. A helpfull suggestion. Thanks Bengt! Regards, Kay Regards, Kay -- http://mail.python.org/mailman/listinfo/python-list
