Re: Convert MAC to hex howto

Discussion in 'Python' started by MRAB, Oct 7, 2012.

  1. MRAB

    MRAB Guest

    On 2012-10-07 20:44, Johannes Graumann wrote:
    > Dear all,
    >
    > I'm trying to convert
    > '00:08:9b:ce:f5:d4'
    > to
    > '\x00\x08\x9b\xce\xf5\xd4'
    > for use in magic packet construction for WakeOnLan like so:
    > wolsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    > wolsocket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    > wolsocket.sendto('\xff'*6 + '\x00\x08\x9b\xce\xf5\xd4'*16,
    > (expectedlanbroadcast, 80))
    >
    > This is what I came up whith, but I remain puzzled on how to preserver the
    > leading '\h' ... thanks for any hint
    >
    > expectedservermac = '00:08:9b:ce:f5:d4'
    > hexcall = str.split(expectedservermac,":")
    > hexcall.insert(0,'')
    > hexcall = "\\x".join(hexcall).decode('string_escape')
    >
    > Thanks for any pointers.
    >

    It looks like you're using Python 2, so:

    >>> s = '00:08:9b:ce:f5:d4'
    >>> "".join(chr(int(x, 16)) for x in s.split(":"))

    '\x00\x08\x9b\xce\xf5\xd4'
     
    MRAB, Oct 7, 2012
    #1
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