python cron job aka repeater

import threading
from threading import Timer

class cron(object):
    def __init__(self, interval, function, *args, **kwargs):
        self._timer     = None
        self.interval   = interval
        self.function   = function
        self.args       = args
        self.kwargs     = kwargs
        self.is_running = False
        self.start()

    def _run(self):
        self.is_running = False
        self.start()
        self.function(*self.args, **self.kwargs)

    def start(self):
        if not self.is_running:
            self._timer = Timer(self.interval, self._run)
            self._timer.start()
            self.is_running = True

    def stop(self):
        self._timer.cancel()
        self.is_running = False

from time import sleep

def hello(name):
    print "Hello %s!" % name

print "starting..."
rt = cron(1, hello, "World") # it auto-starts, no need of rt.start()
try:
    sleep(5) # your long-running job goes here...
    print "serving...."
    print(' ')
    print(' ')
    import socket
    googleip=socket.gethostbyname('www.google.com')
    print 'Google public IP address is:', googleip
    print('********************************************')
    yourdomain_hn_ip=socket.gethostbyname('yourdomain.hn.org')
    print 'yourdomain.hn.ip public IP address is:', yourdomain_hn_ip
    print('********************************************')
    import urllib
    mypublicip = urllib.urlopen('http://www.biranchi.com/ip.php').read()
    print 'My public ip is :', mypublicip
    print(' ')
    print(' ')
finally:
    rt.stop() # better in a try/finally block to make sure the program ends!
    print "starting..."

#----------------------------------------------------------------------------
# This example requires the requests library be installed.  You can learn more
# about the Requests library here: http://docs.python-requests.org/en/latest/
print(' ')
print(' ')
import socket
googleip=socket.gethostbyname('www.google.com')
print 'Google public IP address is:', googleip
print('********************************************')
kenya_hn_ip=socket.gethostbyname('kenya.hn.org')
print 'kenya.hn.ip public IP address is:', kenya_hn_ip
print('********************************************')
import urllib
mypublicip = urllib.urlopen('http://www.biranchi.com/ip.php').read()
print 'My public ip is :', mypublicip
print(' ')
print(' ')
import mechanize