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#!/usr/bin/env python

import urllib
import sys

try:
	url = sys.argv[1]
except IndexError:
	print("Please specify URL")
	sys.exit(1)
	
usock = urllib.urlopen(url)
size =  usock.info().get('Content-Length')
if size is None:
    size = 0
size = float(size) / 1024.0 / 1024.0

print("%d MB" % size)