for line in f.readlines():
    entry = line.split(',')
    bmid = Decimal(entry[32])
    fullid = entry[0] + "~" + entry[32].strip()
    if fullid in singles:
        current = [int(x) for x in entry[5:21]]
        singles[fullid] = [sum(x) for x in zip(current, singles[fullid])]
    else:
        singles[fullid] = [int(x) for x in entry[5:21]]