#!/usr/bin/env

import argparse

parser = argparse.ArgumentParser()
parser.add_argument('num', help = "insert an integer",
	nargs = '?', type = int, default = 0)
parser.add_argument('filename', help = "filename to\
	write your number to", nargs = '?',
	type = str, default = "example3.txt")

args = parser.parse_args()

f = open(args.filename,"w")
f.write(str(args.num)+"\n")

print "Your integer is stored in %s" % (args.filename)