python3 linux 下获取本地网卡ip

• system ubuntu14.04
• python3.6.1

def get_ip_address(ifname):    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)    return socket.inet_ntoa(fcntl.ioctl(        s.fileno(),        0x8915,  # SIOCGIFADDR        struct.pack('256s', bytes(ifname[:15], 'utf-8'))    )[20:24])a = get_ip_address('eth0') # 网卡print(a)