code: def test_not_weighted_graph(self):
      nx_app.greedy_tsp(self.unweightedUG)
      nx_app.greedy_tsp(self.unweightedDG)
  
imports: import random
  import pytest
  import networkx
  import networkx.algorithms.approximation
label_desc: Use image node_id 3 for calling the TestGreedyTSP obj's underlying member method code with example usage: obj.test_not_weighted_graph() without return types