Python Telnet 测试服务器是否正常

def do_telnet(Host):
    '''Telnet远程测试连接：客户端连接Linux服务器'''
    try:
        tn = telnetlib.Telnet(Host, port=80, timeout=5)
        tn.close() # tn.write('exit\n')
    except:
        return False;
    return True;

 需要import telnetlib