#!/usr/bin/python

# download_page
# download a webpage to a specified file. The script takes two parameters:
# the URL of the page to download and a file name to be used to hold
# the downloaded web page.

import urllib2, sys

try:
   sys.argv[1]
except IndexError:
   print "Error - URL missing! Usage: ./download_page.py download_page_url outfile"
   sys.exit(1)
else:
   url = sys.argv[1]

try:
   sys.argv[2]
except IndexError:
   print "Error - missing output file name! Usage: ./download_page.py download_page_url outfile"
   sys.exit(1)
else:
   outfile = sys.argv[2]

page = urllib2.urlopen(url)
source = page.read()

downloadFile = open(outfile, 'w')
downloadFile.write(source)
downloadFile.close()