code: def test_print_topics(self):
      topics = self.model.print_topics()
  
      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 2 for calling the TestBaseTopicModel obj's underlying member method code with example usage: obj.test_print_topics() without return types