Get running time of a process given a pid

contsince.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from subprocess   import check_output
from sys          import argv
from time         import time

cmd = lambda pid:  "stat -t /proc/%s | awk '{print $14}'" % (pid,)


def get_start_time(pid):
    out = check_output(cmd(pid), shell=True).strip("\n")
    return int(out)


def timetuple(deltatime):
    hrs = deltatime // 3600
    mnt = (deltatime - hrs * 3600) // 60
    sec = (deltatime - hrs * 3600 - mnt * 60)
    return (hrs, mnt, sec)

if __name__ == "__main__":
    pid = argv[1]
    tt = (0, 0, 0)
    while True:
        try:
            start_time = get_start_time(pid)
            deltatime = int(time() - start_time)
            tt = timetuple(deltatime)
            if tt[2] % 10 == 0:
                print "running for: %sh%2sm%2ss" % tt
        except:
            print "THE END!\n The process runned for: %2sh%2sm%2ss" % tt
            break

sincetime.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from subprocess   import check_output
from sys          import argv
from time         import time

cmd = lambda pid:  "stat -t /proc/%s | awk '{print $14}'" % (pid,)

if __name__ == "__main__":
    pid = argv[1]
    start_time = int(check_output(cmd(pid), shell=True).strip("\n"))
    deltatime = int(time() - start_time)
    hrs = deltatime // 3600
    mnt = (deltatime - hrs * 3600) // 60
    seg = (deltatime - hrs * 3600 - mnt * 60)
    print "%2sh%2sm%2ss" % (hrs, mnt, seg)