On Jun 24, 9:03 am, eliben <[EMAIL PROTECTED]> wrote: > What would be the quickest way to do this ? I think that for dec2bin > conversion, using hex() and then looping with a hex->bin lookup table > would be probably much faster than the general baseconvert from the > recipe.
I suspect you're right, but it would be easy to find out: just code up the hex->bin method and use the timeit module to do some timings. Don't forget to strip the trailing 'L' from hex(n) if n is a long. If you're prepared to wait for Python 2.6, or work with the beta version, then the conversion is already there: Macintosh-3:trunk dickinsm$ ./python.exe Python 2.6b1+ (trunk:64489, Jun 23 2008, 21:10:40) [GCC 4.0.1 (Apple Inc. build 5465)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> bin(13) '0b1101' Interestingly, unlike hex and oct, bin doesn't add a trailing 'L' for longs: >>> bin(13L) '0b1101' I wonder whether this is a bug... Mark -- http://mail.python.org/mailman/listinfo/python-list
