Size of networkx.Graph() object?

Question

I have pandas dataframe with 2 columns: col1 , col2 . sys.getsizeof(dataframe) shows 495137153 bytes.

Then i grow a graph:

G = networkx.Graph()
G.add_edges_from(zip(data['col1'], data['col2']))

And now i want to check size of my graph, but sys.getsizeof(G) show 64 bytes

How to get real size of object G?

Update: I checked size of G.edges + size G.nodes , it's about 0.2 GB. But growing graph adds ~5 GB to my used RAM. Why so?

Answer 1

You can estimate the size by adding the size of edge list and node list as shown below. The answer is here

sys.getsizeof(G.edge) + sys.getsizeof(G.node)