<｜begin▁of▁sentence｜>### Instruction:
Given a barbell graph created using `nx.barbell_graph(4, 2)`, which initially has two sets of complete graphs each with 4 nodes connected by a path of 2 nodes, how does the number of articulation points change after adding an edge from node 2 to node 8?
### Response:
import networkx as nx

# Create a graph using NetworkX
G = nx.barbell_graph(4, 2)

# Check if the graph is biconnected
print(nx.is_biconnected(G))  # This should print False

# Find the articulation points in the graph
articulation_pts = list(nx.articulation_points(G))
print(len(articulation_pts))  # This should print 4, the number of articulation points in the graph

# Modify the graph, adding an edge to make it biconnected
G.add_edge(2, 8)

# Check if the graph is now biconnected
print(nx.is_biconnected(G))  # This should print True

# Find the articulation points in the modified graph
articulation_pts = list(nx.articulation_points(G))
print(len(articulation_pts))  # This should print 0, as the graph is now biconnected
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