[Tutor] Looping problem

[Rich Krauter]

Hi Vicki,

Here is what I tried; its not fully tested, but maybe
it'll help. I just tried to get rid of some of the
nested loops.

<code>
import cStringIO
import sys

def tokenize(arg):
    """
    Turn each line into a collection of tokens,
    and return list of tokens.
    """
    arg = arg.strip()
    
    tokens = []
    tok = ''
    for c in arg:
        if c == '<' or c == '>':
            if tok:
                tokens.append(tok)
            tok = ''
            continue

        tok += c

    return tokens



if __name__ == '__main__':

    # pretend sys.stdout is your port
    port = sys.stdout

    # substitute what you really want to send
    token_map = {'ACK': 'send ACK',
                 'ETX': 'send ETX',
                 'STX': 'send STX'}


    
    f = """Load Time Resolve Data
    ab<TAB><TAB>11<CR><ACK>
    <STX>04142069<ETX><ACK>
    <STX>08000000006E<ETX><ACK>
    <STX>0414106A<ETX><ACK>
    <STX>10169100000000000061<ETX><ACK>
    <STX>10169000000000000060<ETX><ACK>
    <STX>1016934129CD4CCB201E<ETX><ACK>
    <STX>10169200000000000062<ETX><ACK>
    <STX>10169500000000000065<ETX><ACK>
    <STX>10169400000000000064<ETX><ACK>
   
<STX>20170000000281082A07D4021A0000000815<EOT><ACK><ACK>
    """

    # pretend string f is your file
    strIO = cStringIO.StringIO(f)

    LTRD_START = False
    
    for readString in strIO:
        if "Load Time Resolve Data" in readString:
            LTRD_START = True
            continue
        if "ab<TAB><TAB>11<CR><ACK>" in readString:
            continue

        if LTRD_START:
            tt = tokenize(readString)
            for t in tt:
                if t == 'EOT':
                    print 'Breaking out of loop ...'
                    break
                
                if t in token_map:
                    port.write('%s\n'%token_map[t])
                else:
                    print t
                

</code>

Good luck.

Rich