Microsoft Python HexToGuid and GuidToHex

microsoft-hex-guid

def hex_to_guid(hex):
    swapper = lambda A, n=2: [A[i:i + n] for i in range(0, len(A), n)]
    segments = [hex[0:8], hex[8:12], hex[12:16], hex[16:20], hex[20:]]
    for i in xrange(3):
        segments[i] = "".join(list(reversed(swapper(segments[i]))))
    return "-".join(segments)


def guid_to_hex(guid):
    swapper = lambda A, n=2: [A[i:i + n] for i in range(0, len(A), n)]
    segments = [guid[0:8], guid[9:13], guid[14:18], guid[19:23], guid[24:]]
    for i in xrange(3):
        segments[i] = "".join(list(reversed(swapper(segments[i]))))
    return ''.join(segments)