On 2008-12-12, Filip Gruszczyński wrote: > Hi! > > I would like to iterate over a sequence nad ignore all None objects. > The most obvious way is explicitly checking if element is not None, > but it takes too much space. And I would like to get something faster. > I can use > [ sth for sth in self.__sth if not sth is None ], but I don't know if > that's the best way. I checked itertools, but the only thing that > seemed ok, was ifilter - this requires seperate function though, so > doesn't seem too short. How can I get it the shortest and fastest way?
There's a little hack that will remove all elements from a list that are 'False' when considered as a boolean. So None, [], '', False, etc. filter(None, myseq) an example: >>> l = ['1', 2, 0, None, '5'] >>> filter(None, l) ['1', 2, '5'] -- Regards, Stephen Thorne Development Engineer NetBox Blue - 1300 737 060 Scanned by the NetBox from NetBox Blue (http://netboxblue.com/) Can you afford to be without a NetBox? Find out the real cost of internet abuse with our ROI calculator. http://netboxblue.com/roi Scanned by the NetBox from NetBox Blue (http://netboxblue.com/) -- http://mail.python.org/mailman/listinfo/python-list
