Drawing lines between pairs in Python

Question

I have a tuple of pairs:

pairs=[(3,6),(7,2),(8,5),(9,5),(5,13),(10,6),(6,1),(1,13),(11,2),(2,13),(12,4),(4,13)]

Each pair describes a connection between two points, i.e there's a line between point 3 and point 6.

Currently, doing this:

i=0
for point in pairs:
    i+=1
    plt.plot(point,(i,i))
plt.show()

is giving me straight lines between each point and its respective destination:

However, I'm looking for connecting these lines together to create a graph of "bridges", something along the lines of:

Thanks!

Answer 1

Using networkx,

import networkx as nx
import matplotlib.pyplot as plt

G = nx.Graph()
edges = [
    (3,6),(7,2),(8,5),(9,5),(5,13),(10,6),(6,1),(1,13),(11,2),(2,13),(12,4),(4,13)]

G.add_edges_from(edges)
nx.draw(G)
plt.show()

yields