I noticed the bug is reproducible even if the child process does not put object in the queue:




    import multiprocessing 
    import threading 
    import time 

    if __name__ == "__main__": 
      queue = multiprocessing.SimpleQueue() 

      def consume(queue):
        while True:
          print("Consumed:", queue.get())

      thread = threading.Thread(target=consume, args=(queue,))
      thread.start()
      
      for i in range(10000):
        queue.put(i)
        p = multiprocessing.Process(target=lambda: None) 
        p.start() 
        p.join()

        print("Not hanging yet", i)