I have a class Vector where: class Vector(Symbol):
def __init__(self,basis_str=None): if isinstance(basis_str,Vector): self = basis_str else: if basis_str == None or basis_str == '0': self = S(0) else: Symbol.__init__(self,basis_str,commutative=False) print self print self.is_commutative then: er = Vector('er') outputs my diagnostic print - er True How do I subclass and get self.is_commutative = False? -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@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.