def permutations(l, indexlist=[]):
	if len(l) == len(indexlist):
		print [l[i] for i in indexlist]
	else:
		for i in xrange(len(l)):
			if not i in indexlist:
				indexlist.append(i)
				permutations(l, indexlist)
				del indexlist[-1]

permutations([1, 2, 3, 4])