code: def get(self, extras=None):
      stats = collections.OrderedDict()
      if extras:
          for k, v in extras.items():
              stats[k] = v
      for k, v in self.meters.items():
          stats[k] = format(v.median, ".6f")
  
      return stats
  
file_path: PaddleDetection/ppdet/utils/stats.py
imports: import collections
  import numpy
label_desc: Use image node_id 3 for calling the TrainingStats obj's underlying member method code with example usage: obj.get(extras) and returns: stats