code: def test_krackhardt_closeness(self):
      c = nx.closeness_centrality(self.K)
      d = {
          0: 0.529,
          1: 0.529,
          2: 0.500,
          3: 0.600,
          4: 0.500,
          5: 0.643,
          6: 0.643,
          7: 0.600,
          8: 0.429,
          9: 0.310,
      }
      for n in sorted(self.K):
          assert c[n] == pytest.approx(d[n], abs=1e-3)
  
file_path: networkx/networkx/algorithms/centrality/tests/test_closeness_centrality.py
imports: import pytest
  import networkx
label_desc: Use image node_id 6 for calling the TestClosenessCentrality obj's underlying member method code with example usage: obj.test_krackhardt_closeness() without return types