client.py 文件源码

def blpop(self, keys, timeout=0):
        """
        LPOP a value off of the first non-empty list
        named in the ``keys`` list.

        If none of the lists in ``keys`` has a value to LPOP, then block
        for ``timeout`` seconds, or until a value gets pushed on to one
        of the lists.

        If timeout is 0, then block indefinitely.
        """
        if timeout is None:
            timeout = 0
        if isinstance(keys, basestring):
            keys = [keys]
        else:
            keys = list(keys)
        keys.append(timeout)
        return self.execute_command('BLPOP', *keys)