Ищу генератор последовательностей символов

import itertools

open('out.txt','w').writelines(''.join(i)+'\n'for i in itertools.permutations('фъй'))

# -*- coding: utf-8 -*-

# -*- coding: utf-8 -*-
import itertools
import codecs

codecs.open('out.txt','w','utf-8').writelines(''.join(i)+'\n' for i in itertools.permutations('фъй'.decode('utf-8')))

#!/usr/bin/env python3

import itertools

st = 'жэзхъ'

open(st,'w').writelines(''.join(i)+'\n' for i in itertools.permutations(st))