Can you explain why did you do digraph in answer_four().

[Huta2018]

[Huta2018]

change the edge direction and get a double direction graph

G_copy_df.rename(columns={"From":"From_", "To":"From"}, inplace=True)
G_copy_df.rename(columns={"From_":"To"}, inplace=True)

print (G_copy_df)

G_final_df = pd.concat([G_df, G_copy_df])

print (G_final_df)

[Chaturya3125]