code: def test_articulation_points_cycle():
      G = nx.cycle_graph(3)
      nx.add_cycle(G, [1, 3, 4])
      pts = set(nx.articulation_points(G))
      assert pts == {1}
  
file_path: networkx/networkx/algorithms/components/tests/test_biconnected.py
imports: import pytest
  import networkx
  from networkx import NetworkXNotImplemented
label_desc: Use image node_id 5 for calling a global function with example usage: test_articulation_points_cycle() without return types