permutations.py

import sys
import itertools

# Argument 1: Maximum number of elements used
maxlen = int(sys.argv[1])

# Argument 2: File containing the elements, one per line
wordlist = open(sys.argv[2])


words = [w.strip() for w in wordlist]

for i in range(1, maxlen + 1):
    for l in itertools.permutations(words, i):
        print "".join(l)