code: def test_karate_0():
      G = nx.karate_club_graph()
      _check_connectivity(G)
  
imports: import pytest
  import networkx
  from networkx.algorithms.approximation import k_components
  from networkx.algorithms.approximation.kcomponents import _AntiGraph, _same
label_desc: Use image node_id 7 for calling a global function with example usage: test_karate_0() without return types