code: def test_print_topic(self):
      topics = self.model.show_topics(formatted=True)
      for topic_no, topic in topics:
          self.assertTrue(isinstance(topic_no, int))
          self.assertTrue(isinstance(topic, str))
  
imports: import numpy
label_desc: Use image node_id 1 for calling the TestBaseTopicModel obj's underlying member method code with example usage: obj.test_print_topic() without return types