Construct graph from data file

Question

I have a text file with data as below: AD 15 BA 11 CH 2 . . . . . . AD 15 BA 11 CH 2 . . . . . .

I read data using Dataframe in Python. Then I want to create a graph with vertices in columns 1 & 2 and column 3 is the weight.

How can I create a graph from the data? Thank you!

Answer 1

Here's a quick example using networkx :

import networkx as nx

node_list = list(set(list(df['col1']) + list(df['col2'])))  
data = [tuple(x) for x in df.values.tolist()]
# [('A', 'D', 15), ('B', 'A', 11), ('C', 'H', 2), . . .]

G = nx.Graph()
G.add_nodes_from(node_list)
G.add_weighted_edges_from(data)