Instrument ID = 121212121
Book Definition ID = NORMAL
Trader ID = TRQ01
Order Type = 2
Source ID = <Unset>
Instrument Index = <Unset>
Value = <Unset>
Side = 2
Qualifier = <Unset>
Order Qty = <Unset>
Visible Size = <Unset>
TIF = 0

~|A|SMsg:Sequenced Message{
~|A|{
~|A|    Routing Seq = 28545
~|A|    Origin = 1
~|A|    Transaction ID = 28483
~|A|    Sequenced Message = ~|A|        SMsgLite:NEW NEW ORDER
~|A|    {
~|A|            Instrument ID = 121212121
~|A|            Book Definition ID = NORMAL
~|A|            Trader ID = TRQ01
~|A|            Order Type = 2
~|A|            Source ID = <Unset>
~|A|            Instrument Index = <Unset>
~|A|            Value = <Unset>
~|A|            Side = 2
~|A|            Qualifier = <Unset>
~|A|            Order Qty = <Unset>
~|A|            Visible Size = <Unset>
~|A|            TIF = 0
~|A|            Order Sub Type = 3
~|A|            Inactive Time = <Unset>
~|A|            Expiration Date = <Unset>
~|A|            Contingent Value = <Unset>
~|A|            Owner ID = TRQ01
~|A|            Client Order ID = 380-6XAC3Vw6W
~|A|            Transact Time = <Unset>
~|A|            Symbol = <Unset>
~|A|            IsSurveillance = 1
~|A|            Reason = sd
~|A|            Gateway Rejection = <Unset>
~|A|            Order Reject Code = <Unset>

def BooleanLookup(self,infile,regex,start,end):
    self.infile = infile
    self.regex = regex
    self.start = start
    self.end = end

    for line in itertools.islice(infile,start,end):
        line = line.rstrip()
        if re.match(regex, line):
            return True
            break
        else:
            return False