Hello,I want to try graph-tool because it seems a very powerful and fast way to work with graphs in python. I installed it with the pre-compiled package for ubuntu 14.04 on a 32 bit machine. I tested this code from graph_tool.all import * g = Graph()v1 = g.add_vertex()v2 = g.add_vertex()v3 = g.add_vertex()v4 = g.add_vertex()v5 = g.add_vertex() e1 = g.add_edge(v1, v5)e2 = g.add_edge(v2, v3)e3 = g.add_edge(v3, v4)e4 = g.add_edge(v4, v2)e5 = g.add_edge(v4, v5)e6 = g.add_edge(v4, v1) weights = g.new_edge_property("int")weights[e1] = 2weights[e2] = 3weights[e3] = 2weights[e4] = -1weights[e5] = 5weights[e6] = 1 minimized, dist, pred = bellman_ford_search(g, g.vertex(0), weights) and what I get is: File "/usr/lib/python2.7/dist-packages/graph_tool/search/__init__.py", line 1118, in bellman_ford_search zero, infinity)OverflowError: Python int too large to convert to C long. In case I add the infinity parameter, so minimized, dist, pred = bellman_ford_search(g, g.vertex(0), weights, infinity=int) I get File "graphTest2.py", line 26, in <module> minimized, dist, pred = bellman_ford_search(g, g.vertex(0), weights, infinity=int) File "/usr/lib/python2.7/dist-packages/graph_tool/search/__init__.py", line 1103, in bellman_ford_search infinity = _python_type(dist_map.value_type())(infinity)TypeError: descriptor '__trunc__' of 'int' object needs an argument and the same happens with infinity=float. I tested dijkstra_search, that uses infinity as well, but I don't get any problem. Could you please tell me if I am doing something wrong, or if there is a problem? Thanks and best regards,Alessandro