我需要atexit.register一个函数来终止该过程：
import atexit
process = subprocess.Popen(args.server_file_path)
atexit.register(process.terminate)
pid = process.pid
或许：
import atexit
process = subprocess.Popen(args.server_file_path)
@atexit.register
def kill_process():
try:
process.terminate()
except OSError:
pass #ignore the error. The OSError doesn't seem to be documented(?)
#as such, it *might* be better to process.poll() and check for
#`None` (meaning the process is still running), but that
#introduces a race condition. I'm not sure which is better,
#hopefully someone that kNows more about this than I do can
#comment.
pid = process.pid
请注意，如果您进行了一些令人讨厌的操作，导致python以非优雅的方式死亡（例如，通过os._exit或如果导致SegmentationFault或BusError），则这对您没有帮助
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