How to kill a pid [SOLVED]

[ebolisa]

Well, the wav file is hard to kill. It only dies with CTR-C which I cannot use.
Your code returns the python pid and not the mplayer's.

This' the modified code:

import multiprocessing
import os
import psutil
import time
from subprocess import check_output

file = 'music.wav'

def killtree(pid, including_parent=True):
    parent = psutil.Process(pid)
    for child in parent.children(recursive=True):
        print("child", child)
        child.kill()
    if including_parent:
        parent.kill()  ## this program

def song():
    command = 'mplayer -softvol -volume 1 %s 1>/dev/null 2>&1' % file
    os.system(command)


pid=os.getpid() ##this sketch's pid!!

mp = multiprocessing.Process(target=song)
mp.start()

p= psutil.Process(mp.pid)
print 'pid =', pid, p
print "status", mp.is_alive()
 
time.sleep(0.5)
if mp.is_alive():
     print("terminate")
     mp.terminate()
     mp.join()
else:
    print "already terminated"
    print 'pid =', pid, p
    print "status", mp.is_alive()

killtree(pid)