Traceback (most recent call last):
  File "C:\Users\ninadmore\AppData\Local\Programs\Python\Python36\lib\multiprocessing\queues.py", line 234, in _feed
    obj = _ForkingPickler.dumps(obj)
  File "C:\Users\ninadmore\AppData\Local\Programs\Python\Python36\lib\multiprocessing\reduction.py", line 51, in dumps
    cls(buf, protocol).dump(obj)
TypeError: can't pickle _thread.RLock objects