code: def _worker(self, n):
      while True:
          try:
              work = self._Qin.get(False)
              work["callable"](*work["args"], **work["kwargs"])
              self._Qin.task_done()
          except queue.Empty:
              break
  
imports: import threading
  import queue
label_desc: Use image node_id 3 for calling the ThreadPool obj's underlying member method code with example usage: obj._worker(n) without return types