代码如下：
#get_net_info
# -*- coding: cp936 -*-
import re,time
def get_net_info():
flow1 = open('/proc/net/dev')
lines = flow1.read()
flow1.close()
e = re.compile('(eth.)')
r_re = re.compile('eth..(.*?s)')
r_tr = re.compile(".*eth.*")
match_re = r_re.findall(lines)
match_tr = r_tr.findall(lines)
eth = e.findall(lines)
return (eth,lines,match_re,match_tr)
def net_flow():
net_re_c={}
net_tr_c={}
net_tr_a=[]
for i in get_net_info()[3]:
net_tr_a.append(i.split()[8])
net_tr_a=dict(zip(get_net_info()[0],net_tr_a))
net_re_a = dict(zip(get_net_info()[0],get_net_info()[2]))
print "{eth0:(transmit,receive)"
while True:
time.sleep(1)
net_re_b = dict(zip(get_net_info()[0],get_net_info()[2]))
net_tr_b = []
for i in get_net_info()[3]:
net_tr_b.append(i.split()[8])
net_tr_b=dict(zip(get_net_info()[0],net_tr_b))
for i in net_re_b:
net_re_c[i] = int((float(net_re_b[i])-float(net_re_a[i]))/1024)
for i in net_tr_b:
net_tr_c[i]=int((float(net_tr_b[i])-float(net_tr_a[i]))/1024)
net_re_a = net_re_b
net_tr_a = net_tr_b
net_flow={}
for a in net_re_c:
net_flow[a]=(net_tr_c[a],net_re_c[a])
print net_flow
if __name__ == "__main__":
net_flow()
以下是某网卡测试的显示效果 ethx:(发送流量，接收流量)
以上代码的输出网卡流量结果，还是非常直观的，有兴趣的朋友，亲自测试下吧。