Python: Get network interfaces

glider_network.py

def all_interfaces():
    max_possible = 128
    bytes = max_possible * 32
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    names = array.array('B', '\0' * bytes)
    outbytes = struct.unpack('iL', fcntl.ioctl(s.fileno(), 0x8912, struct.pack('iL', bytes, names.buffer_info()[0])))[0]
    namestr = names.tostring()
    lst = []
    for i in range(0, outbytes, 40):
        name = namestr[i:i + 16].split('\0', 1)[0]
        ip = namestr[i + 20:i + 24]
        lst.append((name, ip))
    return lst