Hi, I have saved a graph in Networkx with .graphml format. I can successfully load the graph in graph-tool and I can see the edge property attached to graph. However, when I try to access the values I get an error that the property does not exist. G = gt.load_graph('gdrive/MyDrive/ColabNotebooks/Thesis/sources/k4p3-2-test.graphml') G.properties {('e', '_graphml_edge_id'): <EdgePropertyMap object with value type 'string', for Graph 0x7f0347bd2950, at 0x7f0347d2a4d0>, ('e', 'etype'): <EdgePropertyMap object with value type 'int32_t', for Graph 0x7f0347bd2950, at 0x7f0347d2af50>, ('v', '_graphml_vertex_id'): <VertexPropertyMap object with value type 'string', for Graph 0x7f0347bd2950, at 0x7f0347d2aa50>} e = G.edges().next() etype[e] NameError: name 'etype' is not defined