code: def test_bad_beta(self):
      with pytest.raises(nx.NetworkXException):
          G = nx.Graph([(0, 1)])
          beta = {0: 77}
          nx.katz_centrality(G, 0.1, beta=beta)
  
imports: import math
  import pytest
  import networkx
label_desc: Use image node_id 9 for calling the TestKatzCentrality obj's underlying member method code with example usage: obj.test_bad_beta() without return types