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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cmReestablishmentRequest(LocalAreaId_presence=0):
 """CM RE-ESTABLISHMENT REQUEST Section 9.2.4"""

    a = TpPd(pd=0x5)
    b = MessageType(mesType=0x28)  # 00101000
    c = CiphKeySeqNrAndSpareHalfOctets()
    e = MobileStationClassmark2()
    f = MobileId()
    if LocalAreaId_presence is 1:
        g = LocalAreaId(iei=0x13, eightbit=0x0)
        packet = packet / g
    packet = a / b / c / e / f
    return packet