A snippet which does what the unescape function does in Javascript

unescape.py

#!/usr/bin/env python3
# vim: fileencoding=utf-8 ff=unix lcs=tab\:>. list noet sw=4 ts=4 tw=0
#
# How to use:
# $ unescape.py 'Line 1\nLine 2\nLine 3\n' 'いち\nに\nさん\n'
#
import sys

def unescape(s):
	return s.encode('raw_unicode_escape').decode('unicode_escape')

def main():
	for arg in sys.argv[1::]:
		print(unescape(arg))

if '__main__' == __name__:
	main()