Hi all, I was trying to build a weighted graph. The input is a list of connections with their weights, something like *connections = [[edge1, edge2, weight1], [edge1, edge3, weight2], ...]* where all edges are string and all weights are float64. I called add-edge_list: *graph.add_edge_list(connections, eprops = graph.new_edge_property("float"))* but got this error: File ".conda/envs/graph-tool/lib/python3.7/site-packages/graph_tool/__init__.py", line 2460, in add_edge_list libcore.add_edge_list_iter(self.__graph, edge_list, eprops) TypeError: No registered converter was able to produce a C++ rvalue of type unsigned long from this Python object of type str What is the most efficient way to build a weighted graph in my case? Thanks! -- Sent from: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/