[2010-01] script to wait for new LRR postcast episode and download

lrr.py

#!/usr/bin/env python
# encoding: utf-8
import sys, os
import time
try:
    import urllib2 as urllib # Python 2.5
except ImportError:
    import urllib.request as urllib # Python 3.0

def main():
    episode = "aug07"
    cooldown = 30 # Time between requests
    url = "http://loadingreadyrun.com/media/lrrcasts/%s.mp3" % (episode)

    while True:
        try:
            print("%.1f: Requesting file." % (time.time(),))
            request = urllib.urlopen(url)
        except urllib.URLError, e:
            print("%.1f: Request failed, error code %i." % (time.time(), e.code))
            print("%.1f: Retrying in %i seconds." % (time.time(), cooldown))
            time.sleep(cooldown)
        else:
            print("%.1f: Request successful, saving file to desktop." % (time.time(),))
            out = open(os.path.expanduser("~/Desktop/%s.mp3" % (episode,)), "w")
            out.write(request.read())
            print("%.1f: Done.%s" % (time.time(), (chr(7) * 3))) # Beep!
            return 0



if __name__ == "__main__": sys.exit(main())

session.txt

1218091324.6: Requesting file.
1218091324.7: Request failed, error code 404.
1218091324.7: Retrying in 30 seconds.
[...]
1218091541.0: Requesting file.
1218091541.1: Request successful, saving file to desktop.
1218091638.2: Done.