code: def test_is_biconnected():
      G = nx.cycle_graph(3)
      assert nx.is_biconnected(G)
      nx.add_cycle(G, [1, 3, 4])
      assert not nx.is_biconnected(G)
  
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 6 for calling a global function with example usage: test_is_biconnected() without return types