Python多处理atexit错误“atexit._run_exitfuncs中的错误”

I am trying to run a simple multiple processes application in Python. The main thread spawns 1 to N processes and waits until they all done processing. The processes each run an infinite loop, so they can potentially run forever without some user interruption, so I put in some code to handle a KeyboardInterrupt:I am trying to run a simple multiple processes