code: def test_laplacian_centrality_K5():
      K5 = nx.complete_graph(5)
      d = nx.laplacian_centrality(K5)
      exact = {0: 0.52, 1: 0.52, 2: 0.52, 3: 0.52, 4: 0.52}
      for n, dc in d.items():
          assert exact[n] == pytest.approx(dc, abs=1e-7)
  
file_path: networkx/networkx/algorithms/centrality/tests/test_laplacian_centrality.py
imports: import pytest
  import networkx
label_desc: Use image node_id 9 for calling a global function with example usage: test_laplacian_centrality_K5() without return types