#!/usr/bin/env python
from threading import Timer
import sys
import time
import copy

#simple error handling
if len(sys.argv) != 2:
        print "Must enter an interval"
        sys.exit(1)

#our function that we will run
def hello():
    print "Hello, I just got called after a %s sec delay" % call_time

#we spawn our time delayed thread here
delay = sys.argv[1]
call_time = copy.copy(delay)    #we copy the delay to use later
t = Timer(int(delay), hello)
t.start()

#we validate that we are not blocked, and that the main program continues
print "waiting %s seconds to run function" % delay
for x in range(int(delay)):
    print "Main program is still running for %s more sec" % delay
    delay = int(delay) - 1
    time.sleep(1)