python - 我应该使用什么数据类型作为 redis-py 函数的参数？

Question

例如，当我使用xack时，我是否需要将每个参数转换为字节，还是由客户端自动完成？

xack(name, groupname, *ids)

似乎使用 str 或 bytes id 都可以，但我在文档中找不到对此的解释。相关源代码的链接将不胜感激。

Answer 1

源代码注释是查看预期类型的​​一个很好的引用。 str 大多数情况下都可以，但有些命令需要某些参数中的其他类型。

例如，请参阅 XCLAIM in client.py :

def xclaim(self, name, groupname, consumername, min_idle_time, message_ids,
           idle=None, time=None, retrycount=None, force=False,
           justid=False):
    """
    Changes the ownership of a pending message.
    name: name of the stream.
    groupname: name of the consumer group.
    consumername: name of a consumer that claims the message.
    min_idle_time: filter messages that were idle less than this amount of
    milliseconds
    message_ids: non-empty list or tuple of message IDs to claim
    idle: optional. Set the idle time (last time it was delivered) of the
     message in ms
    time: optional integer. This is the same as idle but instead of a
     relative amount of milliseconds, it sets the idle time to a specific
     Unix time (in milliseconds).
    retrycount: optional integer. set the retry counter to the specified
     value. This counter is incremented every time a message is delivered
     again.
    force: optional boolean, false by default. Creates the pending message
     entry in the PEL even if certain specified IDs are not already in the
     PEL assigned to a different client.
    justid: optional boolean, false by default. Return just an array of IDs
     of messages successfully claimed, without returning the actual message

您将在该文件中找到其他命令。

Redis 字符串是二进制安全的。您可以使用bytearray作为字符串。这里是example on the tests .

r.set(key, b'\xff\xf0\x00')

您也可以在键上使用bytearray。