code: def test_show_topic(self):
      topic = self.model.show_topic(1)
  
      for k, v in topic:
          self.assertTrue(isinstance(k, str))
          self.assertTrue(isinstance(v, (np.floating, float)))
  
imports: import numpy
label_desc: Use image node_id 3 for calling the TestBaseTopicModel obj's underlying member method code with example usage: obj.test_show_topic() without return types