Ubuntu release tracker

ubuntu-release-tracker.py

#!/usr/bin/env python

import re
import sys
import time
import requests

URL = "http://releases.ubuntu.com/16.04/"

def t():
    return time.strftime('%Y-%m-%d %H:%M:%S',time.gmtime())

if len(sys.argv) > 1:
    time_interval = int(sys.argv[1])
else:
    print >> sys.stderr, "usage: ./ubuntu-release-tracker.py <time interval>"
    sys.exit(1)

print "%s Checking %s" % (t(), URL)

try:
    while True:
        version = ''.join(re.findall(r'<h1>(.*)</h1>', requests.get(URL, timeout=60).content))
        print t(), version
        if time_interval == 0:
            break
        time.sleep(time_interval)
except KeyboardInterrupt:
    print "Interrupted by user"