Python redis 客户端 zrangebylex

Question

我想使用redis的python客户端执行如下命令

zrangebylex names_sorted_set [a "[a\xff\xff\xff\xff"

但在我的代码中会发生以下情况

    name = request.GET.get('name', '')
    redis_con = redis.StrictRedis(settings.REDIS_HOST, settings.REDIS_PORT)
    min = '[' + name
    max = '[' + name + """\xff\xff"""
    result = redis_con.zrangebylex('names_sorted_set', min, max)

上面的代码给我这个错误 'ascii' codec can't decode byte 0xff in position 0: ordinal not in range(128)...我尝试了另一段代码

    redis_con = redis.StrictRedis(settings.REDIS_HOST, settings.REDIS_PORT)
    min = '[' + name
    max = '[' + name + """\\xff\\xff"""
    result = redis_con.zrangebylex('names_sorted_set', min, max)

最后一个把这个作为命令交给redis:

zrangebylex names_sorted_set [a "[a\\xff\\xff\\xff\\xff"

PS:该代码旨在查找排序集中以特定前缀 eg:a 开头的所有字符串。

Answer 1

这个成功了

    name = request.GET.get('name', '')
    redis_con = redis.StrictRedis(settings.REDIS_HOST, settings.REDIS_PORT)
    min = '[' + name
    max = bytearray('[') + \
          bytearray(name, 'utf-8') + \
          b'\xff\xff\xff\xff\xff\xff\xff\xff\xff'
    result = redis_con.zrangebylex('names_sorted_set', min, max)