On 4/4/06, Raymond Hettinger <[EMAIL PROTECTED]> wrote: > [Alex] > > This is quite general and simple at the same time: for example, it > > was proposed originally to answer some complaint about any and all > > giving no indication of the count of true/false items: > > > > tally(bool(x) for x in seq) > > > > would give a dict with two entries, counts of true and false items. > > FWIW, sum() works nicely for counting true entries: > > >>> sum(x%3==0 for x in range(100)) > 34
Sure, and also works fine for counting false ones, thanks to 'not', but if you need both counts sum doesn't work (not without dirty tricks that can't be recommended;-). Alex _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
