<｜begin▁of▁sentence｜>### Instruction:
Imagine you're working in the garage and you've got two engines (each having 4 cylinders), and you're planning to connect these engines with a driveshaft that's composed of two sections. You're curious to figure out which cylinders—or in this case, 'joints'—are critical for holding the entire assembly together, meaning if one of them was to fail, it would split the assembly into separate parts. Also, you want to know if the driveshaft configuration is robust enough to remain intact even if any one joint fails. You've got a design software that uses a system similar to NetworkX to model the connections between the components. Can you run the analysis and identify the critical 'joints'? Additionally, check if the assembly is designed in a way that no single failure can break it into isolated engines, which in engineering terms we refer to as 'biconnectivity'.
### Response:
import networkx as nx

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

# List all articulation points in the graph
articulation_pts = list(nx.articulation_points(G))
print('Articulation points in the graph:', articulation_pts)

# Check if the graph is biconnected
is_biconnected = nx.is_biconnected(G)
print('Is the graph biconnected?', is_biconnected)
<|EOT|>
