Node names missing in dataframe from get_networkx_graph_as_dataframe_of_edges

[agitter]

Calling get_networkx_graph_as_dataframe_of_edges on the augmented forest generated a data frame that has node names only for the edges that are in the optimal forest solution. For instance:

protein1	protein2	cost	in_solution
A	C	0.1	True
C	D	0.1	True
		10.0	

The last row is for the edge A-D.

This happens because the forest graph has protein1 and protein2 as edge attributes. These are also the keys used when exporting the graph to a dataframe, and the edge attributes overwrite the initial key-value pairs for each edge.

I believe I have a fix that I will push to my fork. I can submit a pull request here if you would like.