Drawing multiple edges between two nodes with networkx

Question

I need to draw a directed graph with more than one edge (with different weights) between two nodes. That is, I have nodes A and B and edges (A,B) with length=2 and (B,A) wit

Answer 1

Add the following code to AMangipinto's solution to add edge labels in both directions (see link for picture):

edge_labels = dict([((u, v,), f'{d["length"]}\n\n{G.edges[(v,u)]["length"]}')
                for u, v, d in G.edges(data=True) if pos[u][0] > pos[v][0]])

nx.draw_networkx_edge_labels(G, pos, edge_labels=edge_labels, font_color='red')

The "if pos[u][0] > pos[v][0]" only adds an edge label in one direction. We add both lengths to the single label otherwise we would over write the first label on an edge. Note: The label won't show if the nodes have the same x position.

plot with edge labels