python流量监控_Python_实时监控网卡流量

#-*- coding:utf-8 -*-

#!/usr/bin/env python

import time

import sys

if len(sys.argv) > 1:

INTERFACE = sys.argv[1]

else:

INTERFACE = 'eth0'

STATS = []

print 'Interface:',INTERFACE

def rx():

ifstat = open('/proc/net/dev').readlines()

for interface in  ifstat:

if INTERFACE in interface:

# stat = float(interface.split()[1])    若水网友修改过 ，

stat = float(interface.split(":")[1].split()[0])

STATS[0:] = [stat]

def tx():

ifstat = open('/proc/net/dev').readlines()

for interface in  ifstat:

if INTERFACE in interface:

stat = float(interface.split()[9])

STATS[1:] = [stat]

if  __name__ == '__main__':

print 'In Out'

rx()

tx()

while True:

try:

time.sleep(1)

rxstat_o = list(STATS)

rx()

tx()

RX = float(STATS[0])

RX_O = rxstat_o[0]

TX = float(STATS[1])

TX_O = rxstat_o[1]

RX_RATE = round((RX - RX_O)/1024/1024,3)

TX_RATE = round((TX - TX_O)/1024/1024,3)

print RX_RATE ,'MB',TX_RATE ,'MB'

except KeyboardInterrupt:

print 'pyifstat exited'

break