psutil学习

1.  net_if_addrs()

    Return the addresses associated to each NIC (network interface
    card) installed on the system as a dictionary whose keys are the
    NIC names and value is a list of namedtuples for each address
    assigned to the NIC. Each namedtuple includes 5 fields:

     - family
     - address
     - netmask
     - broadcast
     - ptp

    'family' can be either socket.AF_INET, socket.AF_INET6 or
    psutil.AF_LINK, which refers to a MAC address.
    'address' is the primary address and it is always set.
    'netmask' and 'broadcast' and 'ptp' may be None.
    'ptp' stands for "point to point" and references the destination
    address on a point to point interface (typically a VPN).
    'broadcast' and 'ptp' are mutually exclusive.

    Note: you can have more than one address of the same family
    associated with each interface.
    

示例：

tun0 : [snic(family=2, address='192.168.8.1', netmask='255.255.255.255', broadcast=None, ptp='192.168.8.2'), snic(family=10, address='fe80::f586:cb28:87d1:436f%tun0', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None)]
vmnet1 : [snic(family=2, address='192.168.247.1', netmask='255.255.255.0', broadcast='192.168.247.255', ptp=None), snic(family=10, address='fe80::250:56ff:fec0:1%vmnet1', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None), snic(family=17, address='00:50:56:c0:00:01', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
lo : [snic(family=2, address='127.0.0.1', netmask='255.0.0.0', broadcast=None, ptp=None), snic(family=10, address='::1', netmask='ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', broadcast=None, ptp=None), snic(family=17, address='00:00:00:00:00:00', netmask=None, broadcast=None, ptp=None)]
enp8s0f0 : [snic(family=17, address='00:1b:cd:05:05:24', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
enp8s0f1 : [snic(family=17, address='00:1b:cd:05:05:25', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
vmnet8 : [snic(family=2, address='172.16.194.1', netmask='255.255.255.0', broadcast='172.16.194.255', ptp=None), snic(family=10, address='fe80::250:56ff:fec0:8%vmnet8', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None), snic(family=17, address='00:50:56:c0:00:08', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
enp4s0f0 : [snic(family=2, address='10.0.110.34', netmask='255.255.255.0', broadcast='10.0.110.255', ptp=None), snic(family=10, address='fe80::ec4:7aff:fe16:2ef0%enp4s0f0', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None), snic(family=17, address='0c:c4:7a:16:2e:f0', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
virbr0 : [snic(family=2, address='192.168.122.1', netmask='255.255.255.0', broadcast='192.168.122.255', ptp=None), snic(family=17, address='52:54:00:46:82:b6', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
virbr0-nic : [snic(family=17, address='52:54:00:46:82:b6', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]
enp4s0f1 : [snic(family=17, address='0c:c4:7a:16:2e:f1', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]

参数：

family,  示例中的值分别有2， 10， 17， 分别表示AF_INET, AF_INET6, AF_LINK，可以看到这3类对应的address类型分别是ipv4, ipv6, mac

ptp， 

 

2. net_if_stats()

    Return information about each NIC (network interface card)
    installed on the system as a dictionary whose keys are the
    NIC names and value is a namedtuple with the following fields:

     - isup: whether the interface is up (bool)
     - duplex: can be either NIC_DUPLEX_FULL, NIC_DUPLEX_HALF or
               NIC_DUPLEX_UNKNOWN
     - speed: the NIC speed expressed in mega bits (MB); if it can't
              be determined (e.g. 'localhost') it will be set to 0.
     - mtu: the maximum transmission unit expressed in bytes.

 

3. net_io_counters()

    Return network I/O statistics as a namedtuple including
    the following fields:

     - bytes_sent:   number of bytes sent
     - bytes_recv:   number of bytes received
     - packets_sent: number of packets sent
     - packets_recv: number of packets received
     - errin:        total number of errors while receiving
     - errout:       total number of errors while sending
     - dropin:       total number of incoming packets which were dropped
     - dropout:      total number of outgoing packets which were dropped
                     (always 0 on OSX and BSD)

    If pernic is True return the same information for every
    network interface installed on the system as a dictionary
    with network interface names as the keys and the namedtuple
    described above as the values.