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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _open_ok(self, args):
 """ signal that the connection is ready This method signals to the client that the connection is ready for use. PARAMETERS: known_hosts: shortstr """

        self.known_hosts = args.read_shortstr()
        AMQP_LOGGER.debug('Open OK! known_hosts [%s]' % self.known_hosts)
        return None