Python3 进程未在 sys.exit() 上关闭

Question

So i am working on a project, now in python2 the following code works fine. But i want to upgrade to python3 as python2 is no longer supported. So in the pin_event_down function a process, backup is started. The backup process and function are starting some data logging thread, and then it should be closed/ killed. In python2 the sys.exit() works fine and when reading the python documentation they say that you should use the system.exit() does anyone have a clue why the process is never ended? Also every time the specific pin goes down it creates the process again using the same RAM memory again, thus filling the ram with doubles of 1 process.

    def pin_event_down(self):
    """
    This function is used to create a product pin event.
    @return: None.
    """
        #do some stuff
        Process(target=self.backUp).start()
        #do some stuff

    def backUp(self):
    """
    This function is used to create a backup feedback log.
    @return: None.
    """
        if product is not None:
            self.logger.__init__()
            self.logger.start()
            #do some stuff
        sys.exit()

Answer 1

I think it's because you're calling sys.exit() from a Process. That only terminates the current process, not the parent one. A very messy approach would be to use os._exit(1) from within the Process, but this is dangerous so I do not recommend it.

This thread may be of some help to you: How to exit the entire application from a Python thread?