mapper.py

#!/usr/bin/python

import sys
import re

def main(argv):
	line = sys.stdin.readline()
	pattern = re.compile("[a-zA-Z][a-zA-Z0-9]*")
	try:
		while line:
			for word in pattern.findall(line):
				print word.lower() + "\t" + "1"
			line =  sys.stdin.readline()
	except "end of file":
		return None

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