#def kill_proc_tree(pid, including_parent=True):
#    parent = psutil.Process(pid)
#    for child in parent.get_children(recursive=True):
#        child.kill()
#    if including_parent:
#        parent.kill()

import subprocess
import win32api
import win32com.client
import time
import os
import signal
import psutil

# User files
file = "C:DirectorySubDirectoryfile.mcdx"


# Command line function
# /B /D - No command line window or explorer window
proc = subprocess.Popen('start /B /D
        "C:Program FilesPTCMathcadMathcad Prime 2.0" "MathcadPrime.exe"
        "C:DirectorySubDirectoryfile.mcdx"', shell=True)

# Set and test for active window
    focus = False
    while (focus == False):
            focus = shell.AppActivate("MathCad Prime 2.0 - " + file)
            time.sleep(1)
            if (focus == True):
                break

# Send MathCad Prime commands
shell.SendKeys('%', 0)
time.sleep(0.5)
shell.SendKeys('c', 0)
time.sleep(0.1)
shell.SendKeys('c', 0)
time.sleep(2.0)
shell.SendKeys('%', 0)
time.sleep(0.5)
shell.SendKeys('f', 0)
time.sleep(0.1)
shell.SendKeys('s', 0)
time.sleep(4.0)



#Other methods to tried to kill children:

#Method 1:
#subprocess.call("TASKKILL /F /T /PID {pid}".format(pid=proc.pid))

#Method 2:
#subprocess.Popen("TASKKILL /F /T /PID {pid}".format(pid=proc.pid))

#Method 3:
#if (int(proc.pid) > 0):
#    os.kill(proc.pid, signal.SIGTERM)

#Method 4 (used with kill_proc_tree):
#proc1 = os.getpid()
#kill_proc_tree(proc1)

os.chdir('C:Code')
subprocess.call('TASKLIST /fi "IMAGENAME eq MathcadPrime.exe" /nh /fo csv > task.txt)

doc = open('task.txt', 'rt')
parse = doc.read()
listing = parse.split(",")
PID = listing[1]
PID = int(PID.replace('"','').replace("'",""))
os.kill(PID, signal.SIGTERM)

import subprocess
import os,signal
proc = subprocess.Popen('dir /S', shell=True)
if (int(proc.pid) > 0):
    print "killing ",proc.pid
    print os.kill(proc.pid, signal.SIGTERM)