code: def get_total_time(self):
      total_time = self.total_time.value()
      total_time = round(total_time, 4)
      average_latency = total_time / max(1, self.img_num)
      qps = 0
      if total_time > 0:
          qps = 1 / average_latency
      return total_time, average_latency, qps
  
imports: import time
  import os
  import ast
  import glob
  import yaml
  import copy
  import numpy
  import subprocess
  from python.keypoint_preprocess import EvalAffine, TopDownEvalAffine, expand_crop
label_desc: Use image node_id 2 for calling the PipeTimer obj's underlying member method code with example usage: obj.get_total_time() and returns: total_time,  average_latency,  qps