On Jun 24, 10:38 am, Mark Dickinson <[EMAIL PROTECTED]> wrote: > 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
Strange in 2.6, but I know at least in 3.0 that all integers are C Long's now, so the L is no longer required. -- http://mail.python.org/mailman/listinfo/python-list
