1. For free abelian groups, the iterator doesn't enumerate any elements. sage: A = AbelianGroup(3) sage: A Multiplicative Abelian Group isomorphic to Z x Z x Z sage: for a in A: ....: print a ....:
The bug is in A.__iter__: invs = self.invariants() for t in mrange(invs): yield AbelianGroupElement(self, t) since invs is [0,0,0] the mrange is empty. 2. For free ZZ-modules the iterator doesn't enumerate all elements. sage: M = ZZ^3 sage: for v in M: print v if sum([ abs(v[i]) for i in range(3) ]) > 8: break ....: (0, 0, 0) (1, 0, 0) (-1, 0, 0) (2, 0, 0) (-2, 0, 0) (3, 0, 0) (-3, 0, 0) (4, 0, 0) (-4, 0, 0) (5, 0, 0) (-5, 0, 0) (6, 0, 0) (-6, 0, 0) (7, 0, 0) (-7, 0, 0) (8, 0, 0) (-8, 0, 0) (9, 0, 0) -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org