使用python获取系统网络信息
psutil模块确实是运维工作中比较有用的模块，除了获取系统的硬件信息之外还能够获取到网络信息。
简单的测试如下：
In [8]: psutil.net_io_counters()
Out[8]: snetio(bytes_sent=40186207L, bytes_recv=620160806L, packets_sent=454876L, packets_recv=469843L, errin=0L, errout=0L, dropin=0L, dropout=0)
In [9]: psutil.net_io_counters(pernic = True
...: )
Out[9]:
{'awdl0': snetio(bytes_sent=3121L, bytes_recv=0L, packets_sent=30L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'bridge0': snetio(bytes_sent=342L, bytes_recv=0L, packets_sent=1L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'en0': snetio(bytes_sent=0L, bytes_recv=0L, packets_sent=0L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'en1': snetio(bytes_sent=40969506L, bytes_recv=645656449L, packets_sent=469695L, packets_recv=486500L, errin=0L, errout=0L, dropin=0L, dropout=0),
'en2': snetio(bytes_sent=0L, bytes_recv=0L, packets_sent=0L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'en3': snetio(bytes_sent=0L, bytes_recv=0L, packets_sent=0L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'gif0': snetio(bytes_sent=0L, bytes_recv=0L, packets_sent=0L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'lo0': snetio(bytes_sent=869906L, bytes_recv=869906L, packets_sent=3527L, packets_recv=3527L, errin=0L, errout=0L, dropin=0L, dropout=0),
'p2p0': snetio(bytes_sent=0L, bytes_recv=0L, packets_sent=0L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'stf0': snetio(bytes_sent=0L, bytes_recv=0L, packets_sent=0L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0),
'utun0': snetio(bytes_sent=268L, bytes_recv=0L, packets_sent=3L, packets_recv=0L, errin=0L, errout=0L, dropin=0L, dropout=0)}
这是一个很有意思的功能，似乎常见的360安全卫视等流量统计工具能够统计到的信息这里都有了。不过，不同的网络节点的单独信息，
不过，获取的信息应该作什么解析现在还没有进行更为详细的学习。暂且先做一个方向性的接触，后期再来一点深入。