sherry wrote: > On May 8, 9:31 am, Steven D'Aprano > <[EMAIL PROTECTED]> wrote: >> On Mon, 07 May 2007 20:45:52 -0700, Michael Tobis wrote: >>> I have a reasonably elegant solution but it's a bit verbose (a couple >>> dozen lines which I'll post later if there is interest). Is there some >>> clever Pythonism I didn't spot? >> Peering into my crystal ball, I see that your algorithm does the wrong >> thing, and contains bugs too. You certainly don't need to partion the >> sequence into three sub-sequences, or do that trick with the metaclass, >> and it is more efficient to use list.extend() than sum. >> >> Hang on... stupid crystal ball... that's somebody else's code. Maybe you >> should just post your code here, so we can look at it? >> >> In the meantime, here's a simple generator to do permutations with >> repetition: >> >> def permute_with_repetitions(seq): >> if len(seq) <= 1: >> yield list(seq) >> else: >> for i, item in enumerate(seq): >> for tail in permute_with_repetitions(seq[:i] + seq[i+1:]): >> yield [item] + tail >> >> It doesn't do a test for the sequence containing duplicates, and I leave >> it as anexerciseto do selections of fewer items. >> >> -- >> Steven. > > Dear Steven > I ran into your message quite accidentally while researching about > some details on 'Exercise' and thought of sharing some of my > findings. > I've read at 'http://www.medical-health-care-information.com/Health- > living/exercise/index.asp > that Swimming, cycling, jogging, skiing, aerobic dancing, walking or > any of dozens of other activities can help your heart. Whether it's > included in a structured exercise program or just part of your daily > routine, all physical activity adds up to a healthier heart. > I hope the above is of some help to you as well. Regards, Sherrybove. >
This takes annoying past annoying to some new level of hell to which even satan himself wouldn't venture. -- http://mail.python.org/mailman/listinfo/python-list
