Hello, (I apologize if this has been discussed and it is a design decision). I just noticed that graphs are passed by value instead of passed by reference (which i think is standard in python).
example: sage:def modify(G): sage: G=graphs.CompleteGraph(4) sage:G=graphs.PetersenGraph() sage:modify(G) sage:G Petersen graph: Graph on 10 vertices However, a normal python behavior should be. sage:def modify_list(L): sage: L.append(3) sage:L=[1,2] sage:modify_list(L) sage:L [1,2,3] This can be disastrous if your are passing big graphs. Rado --~--~---------~--~----~------------~-------~--~----~ 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 URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
