PROMS

On Nov 28, 2011, at 2:37 PM, Chuck Guzis wrote: In Python, you could do the following interactively (it reads the whole thing into memory first, but any modern machine shouldn't have trouble with that, and it's really short): ---- in_data = open("infile.bin", "rb").read() open("even.bin", "wb").write(in_data[0::2]) open("odd.bin", "wb").write(in_data[1::2]) ---- If you wanted to be more memory efficient, you could do it the old-fashioned way, though Python actually gets in your way about it a little bit: ---- infile = open("infile.bin", "rb") outfiles = [open(x, "wb") for x in ["even.bin", "odd.bin"]] while infile.peek(): for f in outfiles: f.write(infile.read(1)) ---- That also has the benefit of fairly easily allowing arbitrary interleaving (if you had 4 ROMS for a 32-bit system, say). There's probably a nicer way of doing it than using file.peek(), but since there's no feof() equivalent for the file object, it'll do. - Dave