Hi, It’s not a bug, just a badly written doctest. The Matroid() function tries to guess a mapping from the provided ground set to the edges of the graph. The solution is to have the doctest explicitly label the edges, as I commented on the ticket.
—Stefan. > On Jan 19, 2018, at 6:29 AM, Dima Pasechnik <[email protected]> wrote: > > Please see https://trac.sagemath.org/ticket/24512 > where we discovered that an innocent change in implementation of a wheel > graph G, resulting > in G.edges() and G.edge_iterator() giving different orders, breaks graphic > matroid's > graphic_coextension() > > > -- > > --- > You received this message because you are subscribed to the Google Groups > "sage-matroid" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- --- You received this message because you are subscribed to the Google Groups "sage-matroid" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
