<｜begin▁of▁sentence｜>### Instruction:
Given a simple undirected graph with vertices labeled A-D, and edges between A-B and B-C, how do you find the edge ID between vertices B and C using the igraph library?
### Response:
from igraph import Graph

# Create a simple undirected graph with edges between vertices
vertices = ['A', 'B', 'C', 'D']
edges = [(0, 1), (1, 2)]  # Assume A:0, B:1, C:2, D:3

# Create graph
graph = Graph(vertex_attrs={'label': vertices}, edges=edges, directed=False)

# Get the edge ID between vertices B and C
edge_id = graph.get_eid(1, 2)
print('The edge ID between B and C is:', edge_id)
<|EOT|>
