def congestionControl(Cause_presence=0):
 a = TpPd(pd=3)
 b = MessageType(mesType=57)
 c = CongestionLevelAndSpareHalfOctets()
 packet = ((a / b) / c)
 if (Cause_presence is 1):
  e = CauseHdr(ieiC=8, eightBitC=0)
  packet = (packet / e)
 return packet

def congestionControl ( Cause_presence = 0 ) : a = TpPd ( pd = 3 ) b = MessageType ( mesType = 57 ) c = CongestionLevelAndSpareHalfOctets ( ) packet = ( ( a / b ) / c ) if ( Cause_presence is 1 ) : e = CauseHdr ( ieiC = 8 , eightBitC = 0 ) packet = ( packet / e ) return packet
congestion control section 9 .