#!/usr/bin/pythonimport reimport telnetlibimport timeimport platformimport osHost = ‘.....‘username = ‘‘password = ‘‘finish = ‘<....>‘MIN_INTERVAL = 5.0   # use floatPORT_COUNT = 52      # h3c s5500 has 52 gigabyte ports# return system type as a stringdef get_system_info():	sys_platform = platform.system()	if sys_platform == ‘Linux‘ or sys_platform == ‘Darwin‘:		return ‘UNIX‘	elif sys_platform == ‘Windows‘:		return ‘WINDOWS‘	else:		return ‘UNIX‘def clear_screen():	sys_type = get_system_info()	if sys_type == ‘UNIX‘:		os.system("clear")	elif sys_type == ‘WINDOWS‘:		os.system(‘cls‘)	else:		os.system(‘clear‘)# login to the device and return the Telnet objectdef login():	# telnet to the device	print ‘connect...‘	tn = telnetlib.Telnet(Host,timeout = 5)	tn.read_until(‘Username:‘,timeout=5)	tn.write(username + ‘\n‘)	tn.read_until(‘Password:‘)	tn.write(password + ‘\n‘)	tn.read_until(finish)	print ‘telnet success‘	return tn#‘‘‘using Telnet object to get port status and return a tuple filled with ‘UP‘ ports‘‘‘def get_up_ports(tn):	example = ‘‘‘	The brief information of interface(s) under bridge mode:	Interface            Link      Speed        Duplex   Link-type  PVID	GE1/0/1              UP        100M(a)      full(a)  access     409	GE1/0/2              UP        100M(a)      full(a)  access     409	GE1/0/3              DOWN      auto         auto     access     409‘‘‘	tn.write(‘display brief interface\n‘)	tn.write(‘ ‘)	tn.write(‘ ‘)	ports_brief = tn.read_until(finish)	up_ports = []	port_info	= re.findall(r"GE1/0/(\d+)(\s+)(\w+)",ports_brief)	for i in port_info:		if i[-1] == ‘UP‘:			up_ports.append(i[0])	print up_ports	return tuple(up_ports)def extract_data(port_str):	‘‘‘ get the data from the result of command ‘display interface GigabitEthernet 1/0/i‘	‘‘‘	# (VLAN_ID, total_input, total_output, max_input, max_output)	if re.search(‘GigabitEthernet‘, port_str) == None:		return None		VLAN_ID_list 		= re.findall(r"PVID: (\d+)",port_str)	input_total_list 	= re.findall(r"Input \(total\):  (\d+) packets, (\d+) bytes", port_str)	output_total_list 	= re.findall(r"Output \(total\): (\d+) packets, (\d+) bytes", port_str)	peak_input_list 	= re.findall(r"Peak value of input: (\d+) bytes/sec,", port_str);	peak_output_list	= re.findall(r"Peak value of output: (\d+) bytes/sec,", port_str);	state_list			= re.findall(r"current state: (.+)",port_str)	VLAN_ID = VLAN_ID_list[0] 										# string	input_total 	= long((list(input_total_list[0]))[1])			# long	output_total	= long((list(output_total_list[0]))[1])			# long	peak_input 		= long(peak_input_list[0])						# long	peak_output 	= long(peak_output_list[0])						# long	state 			= str(state_list[0])							# string	return (VLAN_ID, input_total, output_total, peak_input, peak_output, state)def do_statistic():	last_input = [0] * PORT_COUNT	last_output = [0] * PORT_COUNT	last_update = time.time()	tn = login()	up_ports = get_up_ports(tn)	clear_screen()	print ‘connected, waiting...‘	while(True):		ports_str = []		# h3c s5500 g1/0/1 - g1/0/52		# input command to get output		for i in up_ports:			tn.write(‘display interface GigabitEthernet 1/0/‘ + str(i) +‘\n‘)			tn.write(‘ ‘)			port_info = tn.read_until(finish)			ports_str.append(port_info)		# get interval		interval = (time.time() - last_update)		if interval < MIN_INTERVAL:			time.sleep(MIN_INTERVAL - interval)			interval = MIN_INTERVAL		# get data and print		clear_screen()		print "the input/output is from the port view of the switch."		print "From the user‘s view: input <-> download; output <-> upload."		print "the VLAN 1000 is connected to the firewall. So, it‘s opposite\n\n"		print ‘PORT_NO\tVLAN_ID\tINPUT\tOUTPUT\tMAX_IN\tMAX_OUT\tSTATE (MB)‘		port_index = 0		for _port_str in ports_str:			# (VLAN_ID, total_input, total_output, max_input, max_output)			data = http://www.mamicode.com/extract_data(_port_str)"__main__":	username = raw_input("please input username:")	password = raw_input("please input password:")	print username	print password	do_statistic()	tn.close()