bytestring is returned as string

[benjaminweb]

I've isolated a minimum working example:

https://github.com/benjaminweb/redis_lua_bytes_bug

    def test_set_get(redisdb):
        set_get = redis_lua.load_script('set_get', 'lua').get_runner(redisdb)
        data = dict(value='foo bar')
        result = set_get(**data)
        pyredis = redisdb.get('fancykey')
        expected = data['value'].encode('utf-8')
        assert pyredis == expected
        print(pyredis)
>       assert result == expected
E       assert "b'foo bar'" == b'foo bar'

return str(value.decode()) nor return value fixed it, though.