Right, I should have said clever code golf. I think I would have written it like that: def parse(line): p = line.split(",") return ((int(p[0],

Right, I should have said clever code golf. I think I would have written it like that: def parse(line): p = line.split(",") return ((int(p[0], 16), int(p[2], 16)) (parse(line)) for line in fp) And when it was still cool: map(parse, fp)