Run a process and quit without waiting for it

Question

In Python under Windows: I want to run some code in a separate process. And I don\'t want the parent waiting for it to end. Tried this:

from multiprocessing impo         


        

Answer 1

Here is a dirty hack if you must make it work with Process. Basically you just need to overwrite join so that when it does get called before the script exists it does nothing rather than block.

from multiprocessing import Process
import time
import os


def info(title):
    print(title)
    print('module name:', __name__)
    print('parent process:', os.getppid())
    print('process id:', os.getpid())


def f(name):
    info('function f')
    time.sleep(3)
    print('hello', name)


class EverLastingProcess(Process):
    def join(self, *args, **kwargs):
        pass

    def __del__(self):
        pass


if __name__ == '__main__':
    info('main line')
    p = EverLastingProcess(target=f, args=('bob',), daemon=False)
    p.start()