Re: Convert MAC to hex howto

Discussion in 'Python' started by Johannes Graumann, Oct 7, 2012.

  1. MRAB wrote:

    > 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'


    Many thanks!

    Joh
    Johannes Graumann, Oct 7, 2012
    #1
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