def __init__(self, host=None, port=TELNET_PORT, logfile=None):
        self._logfile = logfile
        self.reset()
        if host:
            self.open(host, port)
Notifies the HostManager of the current instances on a host by
dataset/ETHPy150Open kdart/pycopia/core/pycopia/inet/telnet.py/Telnet.__init__--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/scheduler/client/query.py/SchedulerQueryClient.sync_instance_info