How to kill a subprocess initiated by a different function in the same class

Question

I want to kill a process from another function in the class attending to the fact that it was initiated by another function. Here's an example:

 import time

 class foo_class:
    global foo_global
    def foo_start(self):
        import subprocess
        self.foo_global =subprocess.Popen(['a daemon service'])

    def foo_stop(self):
        self.foo_start.foo_global.kill()
        self.foo_start.foo_global.wait()


foo_class().foo_start()
time.sleep(5)
foo_class().foo_stop()

How should I define foo_stop?

Answer 1

jterrace code works. If you don't want it to start when you initialize, just call Popen in a separate function and pass nothing to the init function

import subprocess 
import time

class foo_class(object):
    def __init__(self):
        pass

    def start(self):
        self.foo = subprocess.Popen(['a daemon service'])

    def stop(self):
        self.foo.kill()
        self.foo.wait() #don't know if this is necessary?

    def restart(self):
        self.start()


foo = foo_class()
foo.start()
time.sleep(5)
foo.stop()