This python program reverses the words of a sentence

invert_lines.py

import sys #imports system files

for line in sys.stdin:
	line = line.strip() # Tabs tell python that it is part of the loop
	word = line.split(' ')
	s = ''
	for i in range(1,len(word)+1):
		s = s + word[len(word)-i] + ' '
	print s