code: def print_result(self, centers):
      logger.info("%d anchor cluster result: [w, h]" % self.n)
      for w, h in centers:
          logger.info("[%d, %d]" % (round(w), round(h)))
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import sys
  from ppdet.utils.logger import setup_logger
  from scipy.cluster.vq import kmeans
  import numpy
  from tqdm import tqdm
  from ppdet.utils.cli import ArgsParser
  from ppdet.utils.check import check_gpu, check_version, check_config
  from ppdet.core.workspace import load_config, merge_config
label_desc: Use image node_id 2 for calling the YOLOv2AnchorCluster obj's underlying member method code with example usage: obj.print_result(centers) without return types