code: def add_task(self, func, args=()):
      assert hasattr(func, "__call__")  # must be a function
      if func not in self.result_queues:
          self.result_queues[func] = Queue.Queue()
      self.task_queue.put((func, args, self.result_queues[func]))
  
imports: import os
  import sys
  import glob
  import argparse
  import threading
  import six.moves.queue
  import traceback
  import numpy
  import tensorflow
  import PIL.Image
  import dnnlib.tflib
  from training import dataset
label_desc: Use image node_id 2 for calling the ThreadPool obj's underlying member method code with example usage: obj.add_task(func, args) without return types