code: def results_qsize(self):
      return self._results_queue.qsize()
  
imports: import cProfile
  import pstats
  import random
  import sys
  from threading import Thread, Event
  from traceback import format_exc
  from six.moves import queue
  from petastorm.workers_pool import EmptyResultError, VentilatedItemProcessedMessage
label_desc: Use image node_id 8 for calling the ThreadPool obj's underlying member method code with example usage: obj.results_qsize() and returns: self