Am 26.09.18 um 14:06 schrieb ashutosh:

I created a graph and edge property like this>

*import pandas as pd import graph_tool as gt

df = pd.DataFrame({'Node1':['a','b','c'],'Node2':['b','c','a'],'weight':[0.4,0.5,0.8]})

g = gt.Graph()

nprop = g.new_edge_property("float")

g.add_edge_list(df.values.tolist(),hashed=True,string_vals=True,eprops=[nprop])*

So after creating everything when I type the command

*g.list_properties()*

it doesn't show anything at all. Why so ??

Please read the documentation carefully. Graph.list_properties() only lists the internal property maps, not all property maps created. If you want your property map to show up, you need to do: g.edge_properties["nprop"] = nprop Best, Tiago -- Tiago de Paula Peixoto <tiago@skewed.de>