Trying to help quorteh

quorteth_parse.py

def is_single(data):
    
    if data[1] in ['137','153','73','89']:
        return True
    else:
        return False
    

with open('bigfile.sam', 'r') as uncle:
    GenEx = ( line.split('\t') for line in uncle )
    counter = 0
    while counter <= 13:
        counter += 1
        data = GenEx.next()
        if is_single(data):
            print 'found a singleton, do what singles do'
        else:
            data.extend(GenEx.next())
            print 'found a double, do what couples do'